QUOTE(IRONICK @ 6 Sep 2011, 11:19)
Pana si Amarok are deflectoare la rotile din fata, iar Duster, nu. Cine are ochi sa auda .. bine.
Amarokul e cam dublu la pret.
Full Version: Noul Logan Renault eco2, cu 3,8% consum
Amarokul e cam dublu la pret.
QUOTE(sobolan @ 7 Sep 2011, 00:05)
vad poze cu Zonda p-aci si multa fibra de carbon....cata agitatie ca sa mai scadem cu 0,2% din consum.....de fapt,aici se discuta de aerodinamica la general nu doar despre aerodinamica logan-ului....culmea 
S-a transformat si intr-un topic de stiri aero sau ce se mai face in domeniu pentru turbulente cat mai mici.QUOTE(tribunul @ 7 Sep 2011, 09:06)
Amarokul e cam dublu la pret
O masina mai patrata decat un duster si cu un motor mai potent, are totusi niste bucati de plastic la rotile din fata. Asta trebuia sa intelegi, nu pretul.
O fi făcută pentru autobahn…nu pentru praf/pietriș/grohotiș/noroi/zăpadă unde nu te ia vântul decât pe creastă…
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Intradevar, are sasiu de autostrada.
Intradevar, are sasiu de autostrada.
Mai multe poze, Ironick a fost cam zgarcit in cazul asta.
http://www.vw-vehicule-comerciale.ro/modele/noul_amarok/
http://www.vw-vehicule-comerciale.ro/modele/noul_amarok/
Curios, Megane 3 respecta anumite legi ale aerodinamicii.
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Intodeauna se gaseste informatia in alta limba, la noi revistele auto (si site-urile) sunt praf si pulbere, vai de steaua lor. Nu sunt in stare sa aduc adeloc informatie tehnica.
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QUOTE
Exclusive Aerodynamic Package
While the standard all-new Focus already boasts an exceptionally aerodynamic bodyshell (5-door CD = 0.295), the ECOnetic model has been designed with a number of additional features to minimise drag still further.
Much of the aerodynamic development was concentrated on smoothing the airflow underneath the vehicle. The ECOnetic derivative features additional undershields and deflectors, which cover most of the underfloor between the front and rear axles, together with a new undershield on the rear axle.
Aerodynamic performance is also improved by the use of steel wheels combined with special low-drag ECOnetic wheel covers, which are more streamlined than a conventional alloy wheel design.
The ECOnetic model features, as standard, the innovative Active Grille Shutter – an advanced new system that optimises aerodynamics by using vents to control airflow through the grille to the cooling system and engine compartment.
If air is required to cool the engine the vents are opened; but if no airflow is needed, the vents are shut, thereby significantly reducing aerodynamic drag
Mounted in the grille aperture ahead of the radiator, the Active Grille Shutter features motorised horizontal vanes which can rotate through 90 degrees to block the air flow. Automatically controlled by the car’s electronic control unit, the vanes can be rotated into
16 different positions – from fully closed to fully open – depending on the amount of cooling air required.
When fully closed, the reduction in drag means that the Active Grille Shutter can reduce CO2 emissions by 2 per cent.
While the standard all-new Focus already boasts an exceptionally aerodynamic bodyshell (5-door CD = 0.295), the ECOnetic model has been designed with a number of additional features to minimise drag still further.
Much of the aerodynamic development was concentrated on smoothing the airflow underneath the vehicle. The ECOnetic derivative features additional undershields and deflectors, which cover most of the underfloor between the front and rear axles, together with a new undershield on the rear axle.
Aerodynamic performance is also improved by the use of steel wheels combined with special low-drag ECOnetic wheel covers, which are more streamlined than a conventional alloy wheel design.
The ECOnetic model features, as standard, the innovative Active Grille Shutter – an advanced new system that optimises aerodynamics by using vents to control airflow through the grille to the cooling system and engine compartment.
If air is required to cool the engine the vents are opened; but if no airflow is needed, the vents are shut, thereby significantly reducing aerodynamic drag
Mounted in the grille aperture ahead of the radiator, the Active Grille Shutter features motorised horizontal vanes which can rotate through 90 degrees to block the air flow. Automatically controlled by the car’s electronic control unit, the vanes can be rotated into
16 different positions – from fully closed to fully open – depending on the amount of cooling air required.
When fully closed, the reduction in drag means that the Active Grille Shutter can reduce CO2 emissions by 2 per cent.
[attachmentid=1627749399] [attachmentid=1627749400] [attachmentid=1627749401] [attachmentid=1627749402]
Intodeauna se gaseste informatia in alta limba, la noi revistele auto (si site-urile) sunt praf si pulbere, vai de steaua lor. Nu sunt in stare sa aduc adeloc informatie tehnica.
QUOTE(IRONICK @ 13 Sep 2011, 12:37)
Curios, Megane 3 respecta anumite legi ale aerodinamicii.
si B52 o sa respecte aceleasi legi
Logan_Stepway, nu se vede deloc in consum sau tinuta de drum. Motoarele cu martoage in loc de cai si prea multa topaiala.
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15 Sep 2011, 12:35:
Aerodinamica la masini de ...
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15 Sep 2011, 15:22:
Cateva amanunte de la Subaru XV.
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15 Sep 2011, 12:35:
Aerodinamica la masini de ...
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15 Sep 2011, 15:22:
Cateva amanunte de la Subaru XV.
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Domnu' Ironick, cand ne mai pui niste poze cu Loganul din dotare - unde sa vedem "pe viu" imbunatatirile aerodinamice??
Multumesc anticipat!
Multumesc anticipat!
QUOTE(Logan_Stepway @ 13 Sep 2011, 21:14)
si B52 o sa respecte aceleasi legi
O sa respecte o pu... uite exemplul de mai jos, desi nu se pupa cu pefectiunea, consuma mai putin. Altii reusesc.Lexus CT 200h
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QUOTE(cristic1982 @ 2 Aug 2011, 18:04)
Suna interesant, pe cand niste poze cu toate modificarile tale?
QUOTE(Ion_R5 @ 18 Sep 2011, 00:26)
Domnu' Ironick, cand ne mai pui niste poze cu Loganul din dotare - unde sa vedem "pe viu" imbunatatirile aerodinamice??
Multumesc anticipat!
Multumesc anticipat!
Ironick, vezi bre' ca vor sa-si faca colegii (de forum) altar cu modificarile tale
Pana nu apare noul Logan nu pune poze, sa nu-i fure Dacia ideile.
S-a definitivat lucrul la partea de aspect exterior - aerodinamica pentru X52 asa ca e drumu' liber... 
ar trebui macar apreciat gestul userului Ionercinci care a iesit din "silentio stampa" dupa mai bine de 4 luni pentru-ca nu mai putea sa doarma noaptea de grija modificarilor aduse de Ironick la masina personala
ar trebui macar apreciat gestul userului Ionercinci care a iesit din "silentio stampa" dupa mai bine de 4 luni pentru-ca nu mai putea sa doarma noaptea de grija modificarilor aduse de Ironick la masina personala
QUOTE(Logan_Stepway @ 20 Sep 2011, 16:31)
Ironick, vezi bre' ca vor sa-si faca colegii (de forum) altar cu modificarile tale
Iti dai seama dac-ar face-o racheta, s-ar muta patrutuning p-aici.
Aerodinamica in Canada!
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QUOTE(Logan_Stepway @ 20 Sep 2011, 22:11)
S-a definitivat lucrul la partea de aspect exterior - aerodinamica pentru X52 asa ca e drumu' liber...
Si de ce nu a intrebat pe forum macar ce se mai poarta in domeniu, daca tot ii aia grija? Ca iar a iesit lipsa la apel si asta cand s-a strigat prezenta aerodinamicii pe masina.
Ma bufneste rasul ce zice pacaliciul asta. GM rulez, ce sa zic. Noroc cu criza, ca altfel nu stiau ce insemna aerodinamica.
Singura problema reala este mizeria. Atat timp cat nu se monteaza pe masini de wrc, nu are nici o problema incalzirea cauciucului.
ce sa zic. Noroc cu criza, ca altfel nu stiau ce insemna aerodinamica.QUOTE
Rear fender skirts look great, but flunk in other ways
FRANKFURT -- Rear fender skirts certainly make a car appear sleek and extremely aerodynamic.
So it is just a matter of time before they become standard equipment on all cars, right?
Automakers continue to search for a wide range of styling tricks to reduce aerodynamic drag in an effort to improve fuel economy.
General Motors global styling boss Ed Welburn, interviewed last week on the sidelines of the Frankfurt auto show, said “anything that helps reduce the interference along the side of a car is a good thing.”
So it looks like removable rear fender skirts are a done deal, right? Not so fast.
It turns out after extensive testing by GM, removable fender skirts flunked. They are more of a problem than a solution.
According to Welburn, there are several drawbacks:
• The fender skirt causes tire pressure to increase. Although he did not say it, neither GM nor any automaker wants to create a design that increases the probability of tire failure.
• Removable skirts are difficult to keep in place properly, plus there’s the added cost of each skirt.
• Pick one: To use a fender skirt, the rear tires need to be narrower to fit inside the wheel well or the vehicle track needs to be narrower or the body needs to be what he called “pulled out” to accommodate the same size tires that are steering the car.
Welburn said pulling the body out, essentially widening the body where the rear tires are located, increases aerodynamic drag.
While Welburn didn’t explain the other two choices described above, a narrower tire would reduce vehicle capacity and a narrower vehicle track could slightly increase the probability of rollover.
Says Welburn: "The short answer is, skirts don’t help on a production car."
FRANKFURT -- Rear fender skirts certainly make a car appear sleek and extremely aerodynamic.
So it is just a matter of time before they become standard equipment on all cars, right?
Automakers continue to search for a wide range of styling tricks to reduce aerodynamic drag in an effort to improve fuel economy.
General Motors global styling boss Ed Welburn, interviewed last week on the sidelines of the Frankfurt auto show, said “anything that helps reduce the interference along the side of a car is a good thing.”
So it looks like removable rear fender skirts are a done deal, right? Not so fast.
It turns out after extensive testing by GM, removable fender skirts flunked. They are more of a problem than a solution.
According to Welburn, there are several drawbacks:
• The fender skirt causes tire pressure to increase. Although he did not say it, neither GM nor any automaker wants to create a design that increases the probability of tire failure.
• Removable skirts are difficult to keep in place properly, plus there’s the added cost of each skirt.
• Pick one: To use a fender skirt, the rear tires need to be narrower to fit inside the wheel well or the vehicle track needs to be narrower or the body needs to be what he called “pulled out” to accommodate the same size tires that are steering the car.
Welburn said pulling the body out, essentially widening the body where the rear tires are located, increases aerodynamic drag.
While Welburn didn’t explain the other two choices described above, a narrower tire would reduce vehicle capacity and a narrower vehicle track could slightly increase the probability of rollover.
Says Welburn: "The short answer is, skirts don’t help on a production car."
Singura problema reala este mizeria. Atat timp cat nu se monteaza pe masini de wrc, nu are nici o problema incalzirea cauciucului.
Ford Focus
QUOTE
Grilă radiator auto-adaptivă – o aerodinamică optimizată înseamnă performanțe sporite și consum redus.
Închidere grilă radiator automată
Noul Focus este dotat cu un sistem cu închidere grilă radiator automată (active grill shutter). Orificiile de aerisire de la nivelul grilei sunt mereu deschise pentru a asigura răcirea motorului la deplasarea cu viteză redusă, însă se închid automat când accelerezi. Acest lucru îmbunătățește aerodinamica, ceea ce reduce consumul de combustibil cu până la 0,8% conform noilor cicluri de măsurare NEDC (New European Driving Cycle). În timp, vei simți diferența.
Sursa
Închidere grilă radiator automată
Noul Focus este dotat cu un sistem cu închidere grilă radiator automată (active grill shutter). Orificiile de aerisire de la nivelul grilei sunt mereu deschise pentru a asigura răcirea motorului la deplasarea cu viteză redusă, însă se închid automat când accelerezi. Acest lucru îmbunătățește aerodinamica, ceea ce reduce consumul de combustibil cu până la 0,8% conform noilor cicluri de măsurare NEDC (New European Driving Cycle). În timp, vei simți diferența.
Sursa
Probabil viata ne invata ceva, nu conteaza cate inovatii tehnice exista pe piata ci cate ne permitem sa cumparam.
Innovative Active Grille Shutter fitted as standard
The new Focus is the first car in its class to standardise an Active Grille Shutter – an innovative new system that optimises aerodynamics by using vents to control airflow through the grille to the cooling system and engine compartment.
If air is required to cool the engine the vents are opened; but if no airflow is needed, the vents are shut, thereby significantly reducing aerodynamic drag Mounted in the grille aperture ahead of the radiator, the Active Grille Shutter features motorised horizontal vanes which can rotate through 90 degrees to block the air flow.
Automatically controlled by the car’s electronic control unit, the vanes can be rotated into 16 different positions – from fully closed to fully open – depending on the amount of cooling air required.
When fully closed, the reduction in drag means that the Active Grille Shutter can reduce CO2 emissions by 2 per cent.
As an additional benefit, the system keeps the vanes closed as long as possible when starting from cold, so that the engine reaches its most efficient operating temperature more quickly.
This benefits both fuel consumption and exhaust emissions, as well as ensuring that the vehicle cabin warms up quicker.
With careful optimisation of aerodynamic details, it was possible to achieve a significant reduction in drag compared to the previous Focus:
• 4-door – CD = 0.274 (was 0.304), reduced by 10 per cent
• 5-door – CD = 0.295 (was 0.318), reduced by 7 per cent
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The Chevy Eco Cruze utilizes an innovative automatic air shutter system that closes the grill vents at higher speeds to reduce drag by .016 – adding .5 mpg and helping push the Cruze to the magic 40 mpg number. The shutter system is fitted to sensors that measure changes in speed or temperature. If the temperature drops or the sensors measure sufficiently high speeds, the vents will be closed by electric motors, cutting down the amount of air that enters the engine bay. Why not simply keep the grill vents closed all the time? Because added airflow is needed to help cool the engine at lower speeds.
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PS. Despre Focus am mai postat in #456 (13 Sep 2011, 12:37)
The new Focus is the first car in its class to standardise an Active Grille Shutter – an innovative new system that optimises aerodynamics by using vents to control airflow through the grille to the cooling system and engine compartment.
If air is required to cool the engine the vents are opened; but if no airflow is needed, the vents are shut, thereby significantly reducing aerodynamic drag Mounted in the grille aperture ahead of the radiator, the Active Grille Shutter features motorised horizontal vanes which can rotate through 90 degrees to block the air flow.
Automatically controlled by the car’s electronic control unit, the vanes can be rotated into 16 different positions – from fully closed to fully open – depending on the amount of cooling air required.
When fully closed, the reduction in drag means that the Active Grille Shutter can reduce CO2 emissions by 2 per cent.
As an additional benefit, the system keeps the vanes closed as long as possible when starting from cold, so that the engine reaches its most efficient operating temperature more quickly.
This benefits both fuel consumption and exhaust emissions, as well as ensuring that the vehicle cabin warms up quicker.
With careful optimisation of aerodynamic details, it was possible to achieve a significant reduction in drag compared to the previous Focus:
• 4-door – CD = 0.274 (was 0.304), reduced by 10 per cent
• 5-door – CD = 0.295 (was 0.318), reduced by 7 per cent
[attachmentid=1627752396] [attachmentid=1627752397]
The Chevy Eco Cruze utilizes an innovative automatic air shutter system that closes the grill vents at higher speeds to reduce drag by .016 – adding .5 mpg and helping push the Cruze to the magic 40 mpg number. The shutter system is fitted to sensors that measure changes in speed or temperature. If the temperature drops or the sensors measure sufficiently high speeds, the vents will be closed by electric motors, cutting down the amount of air that enters the engine bay. Why not simply keep the grill vents closed all the time? Because added airflow is needed to help cool the engine at lower speeds.
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PS. Despre Focus am mai postat in #456 (13 Sep 2011, 12:37)
Cam complicat sistemul cu grilele adaptive. Senzori, motorase, clapete - o gramada de chestii care se pot strica. E loc de imbunatatiri in alta parte fara a mai fi nevoie de chestia asta.
Nu in ultimul rand mai adauga si un pic de greutate, ceea ce nu e deloc benefic pentru economia generala a eficientei.
Nu in ultimul rand mai adauga si un pic de greutate, ceea ce nu e deloc benefic pentru economia generala a eficientei.
Ford Focus Sedan (2011)
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YRX, nu este deloc complicat sistemul. Iar greutatea este extrem de mica, nu cantareste mai mult de 1kg.
Fara scut: [attachmentid=1627755742] [attachmentid=1627755743]
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YRX, nu este deloc complicat sistemul. Iar greutatea este extrem de mica, nu cantareste mai mult de 1kg.
Fara scut: [attachmentid=1627755742] [attachmentid=1627755743]
JAGUAR
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Misto pieptenele de sub Jaguar, astia au trecut la nivelul urmator, vortex sub masina.
Asa, ai fost la SAB fara mine ...
Asa, ai fost la SAB fara mine ...
@YRX, am fost cu Klaus.
Am adaugat o comparatie. Focus sedan cu carenaj si logan cu carenaj. Se vede perfect unde este eficient (bine, la focus mai exista si varianta cu esapament sub portbagaj, nu ca in imaginile de mai sus sub bancheta spate, copiat sau nu dupa vw passat).
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Am adaugat o comparatie. Focus sedan cu carenaj si logan cu carenaj. Se vede perfect unde este eficient (bine, la focus mai exista si varianta cu esapament sub portbagaj, nu ca in imaginile de mai sus sub bancheta spate, copiat sau nu dupa vw passat).
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FORD MUSTANG
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EXTRA (pentru ca intodeauna mi-au placut genul asta de masini)
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EXTRA (pentru ca intodeauna mi-au placut genul asta de masini)
un pic de offtopic
interesanta evacuarea, si citez
"One of the most interesting features of the 2012 Boss 302 is its quad exhaust system, developed to give the car a unique sound. The two primary pipes exiting the rear handle most of the exhaust gases, while two smaller pipes branch off from the exhaust crossover and exit discreetly along the lower body sides, just in front of the rear wheels, sending gases through a set of metal discs that generate unique sounds. Should the owner live somewhere with more lax noise regulations, the plates can easily be removed in favor of aftermarket dump valves."
un alt lucru interesant este elementul de rigidizare al caroseriei care inlocuieste bancheta spate
interesanta evacuarea, si citez
"One of the most interesting features of the 2012 Boss 302 is its quad exhaust system, developed to give the car a unique sound. The two primary pipes exiting the rear handle most of the exhaust gases, while two smaller pipes branch off from the exhaust crossover and exit discreetly along the lower body sides, just in front of the rear wheels, sending gases through a set of metal discs that generate unique sounds. Should the owner live somewhere with more lax noise regulations, the plates can easily be removed in favor of aftermarket dump valves."
un alt lucru interesant este elementul de rigidizare al caroseriei care inlocuieste bancheta spate
“We’re also going to be offering aerodynamic wheels that will enable 320 mile range,” Musk told us earlier. “There were some skeptics who said we couldn’t do a 300 mile range, but we’re going to do better than that. We’re going to offer 320 mile range, as tested on the EPA 2 cycle test.”
20 miles > 6.7% din jante
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20 miles > 6.7% din jante
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Ferrari, mustang, jaguar, tocmai cu "dobitoacele" astea comparati loganul?
QUOTE(tribunul @ 14 Oct 2011, 16:49)
Ferrari, mustang, jaguar, tocmai cu "dobitoacele" astea comparati loganul?
asta le-am zis si eu....vezi ca o sa dispara si post-ul asta !
Roti spate acoperite.
QUOTE(LuluMOB @ 16 Oct 2011, 13:06)
Roti spate acoperite
Au spatiu sa permita iesirea aerului, desi acolo cred ca este doar o "artifica" de design. Au mers pe Welburn, se incalzesc domne rotile ...QUOTE(sobolan @ 15 Oct 2011, 11:02)
asta le-am zis si eu....vezi ca o sa dispara si post-ul asta !
Caut cu disperare topicul ala in care cineva tot aduna si mai explica din cand in cand ce se mai poarta in aerodinamica. Unde este? Nu il vad eu cumva?@Logan_Stepway, mi se pare de mare porc sa iti stergi pozele atasate pe topic la posturile mai vechi. Daca nu esti capabil sa aduci ceva bun, de ce iti mai pierzi timpul pe aici? Te mai si superi cand postezi pozele altora, dar care nu aduc nici o informatie noua. De ce nu ai facut tu poze personale la dusterul ala inainte sa fie invitata presa?
http://www.daciaclub.ro/index.php?showtopi...dpost&p=3077791
http://www.daciaclub.ro/index.php?showtopi...dpost&p=3074924
QUOTE(IRONICK @ 17 Oct 2011, 09:34)
..... De ce nu ai facut tu poze personale la dusterul ala inainte sa fie invitata presa?
...
...
n-are relatii
QUOTE(IRONICK @ 17 Oct 2011, 08:34)
Au spatiu sa permita iesirea aerului, desi acolo cred ca este doar o "artifica" de design. Au mers pe Welburn, se incalzesc domne rotile ...Caut cu disperare topicul ala in care cineva tot aduna si mai explica din cand in cand ce se mai poarta in aerodinamica. Unde este? Nu il vad eu cumva?
Salut, daca te uiti la jantele masinii, se vede ca au ventilare (jante cu un design relativ apropiat, cu aripioare de ventilare pozitionate sus - semi-ascunse in spatele unui "taler" menit sa ofere profil aerodinamic masinii - am mai vazut la unele jante de Citroen si jante Renault - modele mai vechi)
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Aerodinamica dusa la extrem. Se observa pe laterale spate in dreptul stopurilor, niste baghete care ajuta la desprinderea aerului.
Aerodinamica dusa la extrem. Se observa pe laterale spate in dreptul stopurilor, niste baghete care ajuta la desprinderea aerului.
Lotus Evora GTE 
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Martin Winterkorn, CEO-ul grupului VAG, a declarat că în 2013 vom vedea pe stradă versiunea de serie a conceptului Xl1, capabil să ofere un consum de 0.9 litri/100 km.
Cd=0,186.
Cd=0,186.
Honda Insight
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<span class='edit'>10 Nov 2011, 11:48:</span>
Si un mic comentariu la ce se vede in poze: au adaugat niste mici deflectoare pe laterale sub spoiler, nu exista carenaj de la punte in spate, dar forma portbagajului preia rolul, spoilerul si tripla ajuta la desprinderea mai usoara a aerului, puntea are carenaje de plastic doar in dreptul arcurilor, partea inferioara a spoilerului fata si carenajul motorului prezinta un usor efect de vortex.
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<span class='edit'>10 Nov 2011, 11:48:</span>
Si un mic comentariu la ce se vede in poze: au adaugat niste mici deflectoare pe laterale sub spoiler, nu exista carenaj de la punte in spate, dar forma portbagajului preia rolul, spoilerul si tripla ajuta la desprinderea mai usoara a aerului, puntea are carenaje de plastic doar in dreptul arcurilor, partea inferioara a spoilerului fata si carenajul motorului prezinta un usor efect de vortex.
Ce se gaseste in link-ul asta este prea greu de inteles pentru multi, mai frumoase sunt niste poze ...
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Toyota Prius C
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21 Nov 2011, 10:38:
21 Nov 2011, 10:38:
da teste cu concurenta directa a daciei nu ai si tu? un 107, twingo, up?
La ce foloseste?
http://media.daimler.com/dcmedia/0-921-657...S=1322383660505
Aero trailer design study from Mercedes-Benz: drastically cutting wind resistance and fuel consumption of semitrailer tractors
Stuttgart/Kortrijk
Nov 25, 2011
Aero trailer: 18 percent less wind resistance, nearly five percent less consumption
Airdams, trim panels and tapers reduce wind resistance
Aero trailer saves 2000 l of diesel and more than five tonnes of CO2 per annum
Know-how from more than 25 years of research into aerodynamics
Future integration of the trailer in telematics systems
Trailer axles from the truck manufacturer, highest service quality
Stuttgart/Kortrijk – The wind resistance falls by 18 percent, the fuel consumption by virtually five percent: the design study from Mercedes-Benz goes by the working title “aero trailer” and shows how it is possible to reduce yet further the already low consumption and thus also the CO2 emissions of state-of-the-art trucks such as the new Actros. Mercedes-Benz will be presenting its ideas for the first time on the occasion of the “Trailer 2011” show taking place between 25 and 29 November in Kortrijk, Belgium.
Airdams, trim panels and tapers reduce wind resistance
The aero trailer encompasses the tremendous amount of know-how contributed by the developers and aerodynamicists at Mercedes-Benz. In close cooperation with the Commercial Vehicle Design department they have already succeeded in cutting the wind resistance of the new premium truck, the Mercedes-Benz Actros, bringing it down to 12 to 15 percent lower than that of its predecessor, depending on the model in question.
It is on this basis that the designers have now created a trailer with corresponding properties. Numerous individual measures drastically lower the wind resistance of the entire tractor unit. A front airdam on the trailer reduces the distance to the tractor unit and lowers the wind resistance by one percent. Meanwhile side trim panels contribute an eight-percent improvement. They are slightly drawn-in at the front and characterised by an opening at the rear. This steers the air in the direction of the striking rear diffuser. The diffuser has the shape of a parallelogram and links up with the underbody panelling. This improves the wind resistance by one to two percent.
A rear end taper measuring slightly more than 400 mm in length forms a crucial part of the aerodynamic concept. It features folding elements to facilitate access to the load compartment. The rear end taper improves wind resistance by a further seven percent.
Aero trailer saves 2000 l of diesel and more than five tonnes of CO2 per annum
All in all the aero trailer lowers the wind resistance of the entire semitrailer tractor by approximately 18 percent. In the experience of Mercedes-Benz this results in a reduction in fuel consumption amounting to almost five percent in real-life road traffic. In the case of an average mileage of 150,000 km a year this means a saving of some 2000 l of diesel fuel and relieves the burden on the environment to the tune of over five tonnes of CO2 per annum.
The fundamental feature of the revolutionary aero trailer is to be found in the trailer’s load compartment, whose dimensions remain totally unaffected. The familiar box – measuring 13.6 m in length, 2.55 m in width and with an overall height of four metres – remains available for the freight, just as before. The aero trailer’s only restriction is the fact that its length measurement exceeds the currently permissible limit by almost half a metre, due to the tail-end extension. That said, the handling and manoeuvrability are not in any way compromised by the taper. It is here that changes to legislation are necessary, as in the case of tail lifts and transportable fork-lift trucks, for instance, where exceptions of a similar magnitude are already granted.
Flagship of the “Truck and Trailer 7plus” initiative
The aero trailer is the flagship of the new “Truck and Trailer 7plus” initiative being launched by Mercedes-Benz. By taking a holistic approach to the tractor unit and trailer it aims to considerably cut the fuel consumption – and thus also the CO2 emissions of semitrailer tractors at the same time – even further than is currently the case.
The basis of the “Truck and Trailer 7plus” formula is the fuel consumption of the new Mercedes-Benz Actros, which is proven to be more than seven percent lower than its predecessor model, itself recognised as being frugal. This consumption advantage was achieved by the new Mercedes-Benz Actros earlier this year: during the “Record Run” it totalled 7.6 percent less consumption – with 25.1 to 27.1 litres/100 km. The values were determined by Mercedes-Benz under neutral supervision: semitrailer tractors bearing 40-tonne loads were each driven 10,000 km in identical conditions between Rotterdam in the Netherlands and Szczecin in Poland. “Truck and Trailer 7plus” stands for the fact that Mercedes-Benz wants to extend the consumption advantage achieved here by closely cooperating with the trailer manufacturers.
Trailer trim saves of 750 l diesel and 2 tonnes of CO2 a year
Intensive tests in the wind tunnel and on the road prove that considerable further consumption progress is possible for semitrailer tractors. By way of example, measurements taken in the wind tunnel at Mercedes-Benz have shown that a side trim panel on the trailer cuts wind resistance by eight percent.
During test drives on the Record Run route this translated into a real-life consumption benefit of some 2 percent for a semitrailer tractor weighing 40 tonnes. In the case of an average annual mileage of 150,000 km in long-distance transport this results in a saving of around 750 l of fuel and relieves the burden on the environment to the tune of approximately 2000 kg of CO2 emissions.
The proof is in the wind tunnel: “boat tail” saves 1000 l of diesel
In addition to this, at the instigation of Mercedes-Benz a working group of truck and trailer manufacturers under the umbrella of the German Association of the Automotive Industry has carried out further tests on the aerodynamics of semitrailer tractors. In the framework of this study, measurements in the wind tunnel at Mercedes-Benz concluded that modifications to the cab such as a supposedly aerodynamic extension result in merely minimal improvements where wind resistance is concerned.
There is much more potential in aerodynamic measures at the tail end of the trailer; a minor extension of the tail end in the form of a “boat tail” brings significant benefits. Four flaps measuring just 400 mm in length and positioned at an angle reduce the wind resistance of the entire semitrailer tractor by nearly ten percent. In arithmetical terms this corresponds to virtually three percent less fuel consumption or more than 1000 l of diesel a year. At the same time it saves the environment over 2600 kg of CO2 emissions. This is also proven by the simulations which have been carried out for the aero trailer.
Future integration of the trailer in telematics systems
As part of its “Truck and Trailer 7plus” initiative Mercedes-Benz is working on further holistic measures aimed at lowering fuel consumption. One of the projects involves the inclusion of information on the trailer’s tyres in the tyre pressure display in the cab of the new Actros.
The FleetBoard subsidiary – which leads the field when it comes to telematics for commercial vehicles – is also currently developing methods of integrating the trailer in its systems. This forms the basis for concrete opportunities for increasing economy and therefore environmental compatibility to an even greater extent. The nearest available suitable trailer for a particular job, the correct allocation of truck and trailer, the transmission of trailer data to the truck’s cockpit – these and other ideas could soon become reality.
Trailer axles from the truck manufacturer, highest service quality
Another idea has already been implemented: since the launch of the first-generation Mercedes-Benz Actros 15 years ago the company has been one of the leading manufacturers of trailer axles in Europe. The unique DCA Airmaster trailer axle is one of its outstanding products: it stores the compressed air for the trailer in the axle housing. This saves the air vessels for the trailer and reduces the weight, and with it fuel consumption and emissions.
TruckWorks is a further example of integrating the trailer in an overall system. More than 80 Mercedes-Benz locations now deal with the entire service for the tractor unit, trailer and bodies, plus their associated components. TruckWorks ensures the same levels of top quality at each location and saves the operators of semitrailer/tractor combinations expense and unnecessary journeys – which in turn means less fuel consumption and reduces the burden on the environment.
New Actros systematically geared towards utmost efficiency
The inclusion of the trailer supplements the already superb economy displayed by the new Mercedes-Benz Actros. It is driven as economically as it is powerfully with a highly sophisticated drive system – perfectly matched to the particular application in question – from a single source. With a view to achieving the utmost efficiency the new Actros spent 2600 hours in the wind tunnel alone, being meticulously optimised – as intensively and carefully as no truck before it. As a result the new Actros is the most frugal and therefore the cleanest truck in its class.
Know-how from over 25 years of research into aerodynamics
There is a long tradition of adopting a holistic approach to the truck and trailer at Mercedes-Benz. Even back in the mid-1980s the development engineers were carrying out in-depth investigations into the aerodynamics of entire vehicle combinations. These involved research into the effect of air deflector panels, side trim panels, edge radii and rear end tapers.
The fundamental knowledge gained back then is still valid to this day and forms the basis for the current investigations. In those days the focus was merely on saving fuel for economic reasons; priority had not yet been given to protecting the environment by reducing CO2 output. Today, some 25 years later, environment relief, conservation of resources and economy represent seamless additions, in the form of the “Truck and Trailer 7plus” initiative.
[attachmentid=1627768139] [attachmentid=1627768140] [attachmentid=1627768141] [attachmentid=1627768142]
- a small aerodynamic device attached close to the body of the car
- helps to lead the air off the rear of the car
- reduces the low-pressure zone behind the car lowering drag and instability
- does not increase traction by downward force
- makes the car look better (sometimes)
[attachmentid=1627768143]
Aero trailer design study from Mercedes-Benz: drastically cutting wind resistance and fuel consumption of semitrailer tractors
Stuttgart/Kortrijk
Nov 25, 2011
Aero trailer: 18 percent less wind resistance, nearly five percent less consumption
Airdams, trim panels and tapers reduce wind resistance
Aero trailer saves 2000 l of diesel and more than five tonnes of CO2 per annum
Know-how from more than 25 years of research into aerodynamics
Future integration of the trailer in telematics systems
Trailer axles from the truck manufacturer, highest service quality
Stuttgart/Kortrijk – The wind resistance falls by 18 percent, the fuel consumption by virtually five percent: the design study from Mercedes-Benz goes by the working title “aero trailer” and shows how it is possible to reduce yet further the already low consumption and thus also the CO2 emissions of state-of-the-art trucks such as the new Actros. Mercedes-Benz will be presenting its ideas for the first time on the occasion of the “Trailer 2011” show taking place between 25 and 29 November in Kortrijk, Belgium.
Airdams, trim panels and tapers reduce wind resistance
The aero trailer encompasses the tremendous amount of know-how contributed by the developers and aerodynamicists at Mercedes-Benz. In close cooperation with the Commercial Vehicle Design department they have already succeeded in cutting the wind resistance of the new premium truck, the Mercedes-Benz Actros, bringing it down to 12 to 15 percent lower than that of its predecessor, depending on the model in question.
It is on this basis that the designers have now created a trailer with corresponding properties. Numerous individual measures drastically lower the wind resistance of the entire tractor unit. A front airdam on the trailer reduces the distance to the tractor unit and lowers the wind resistance by one percent. Meanwhile side trim panels contribute an eight-percent improvement. They are slightly drawn-in at the front and characterised by an opening at the rear. This steers the air in the direction of the striking rear diffuser. The diffuser has the shape of a parallelogram and links up with the underbody panelling. This improves the wind resistance by one to two percent.
A rear end taper measuring slightly more than 400 mm in length forms a crucial part of the aerodynamic concept. It features folding elements to facilitate access to the load compartment. The rear end taper improves wind resistance by a further seven percent.
Aero trailer saves 2000 l of diesel and more than five tonnes of CO2 per annum
All in all the aero trailer lowers the wind resistance of the entire semitrailer tractor by approximately 18 percent. In the experience of Mercedes-Benz this results in a reduction in fuel consumption amounting to almost five percent in real-life road traffic. In the case of an average mileage of 150,000 km a year this means a saving of some 2000 l of diesel fuel and relieves the burden on the environment to the tune of over five tonnes of CO2 per annum.
The fundamental feature of the revolutionary aero trailer is to be found in the trailer’s load compartment, whose dimensions remain totally unaffected. The familiar box – measuring 13.6 m in length, 2.55 m in width and with an overall height of four metres – remains available for the freight, just as before. The aero trailer’s only restriction is the fact that its length measurement exceeds the currently permissible limit by almost half a metre, due to the tail-end extension. That said, the handling and manoeuvrability are not in any way compromised by the taper. It is here that changes to legislation are necessary, as in the case of tail lifts and transportable fork-lift trucks, for instance, where exceptions of a similar magnitude are already granted.
Flagship of the “Truck and Trailer 7plus” initiative
The aero trailer is the flagship of the new “Truck and Trailer 7plus” initiative being launched by Mercedes-Benz. By taking a holistic approach to the tractor unit and trailer it aims to considerably cut the fuel consumption – and thus also the CO2 emissions of semitrailer tractors at the same time – even further than is currently the case.
The basis of the “Truck and Trailer 7plus” formula is the fuel consumption of the new Mercedes-Benz Actros, which is proven to be more than seven percent lower than its predecessor model, itself recognised as being frugal. This consumption advantage was achieved by the new Mercedes-Benz Actros earlier this year: during the “Record Run” it totalled 7.6 percent less consumption – with 25.1 to 27.1 litres/100 km. The values were determined by Mercedes-Benz under neutral supervision: semitrailer tractors bearing 40-tonne loads were each driven 10,000 km in identical conditions between Rotterdam in the Netherlands and Szczecin in Poland. “Truck and Trailer 7plus” stands for the fact that Mercedes-Benz wants to extend the consumption advantage achieved here by closely cooperating with the trailer manufacturers.
Trailer trim saves of 750 l diesel and 2 tonnes of CO2 a year
Intensive tests in the wind tunnel and on the road prove that considerable further consumption progress is possible for semitrailer tractors. By way of example, measurements taken in the wind tunnel at Mercedes-Benz have shown that a side trim panel on the trailer cuts wind resistance by eight percent.
During test drives on the Record Run route this translated into a real-life consumption benefit of some 2 percent for a semitrailer tractor weighing 40 tonnes. In the case of an average annual mileage of 150,000 km in long-distance transport this results in a saving of around 750 l of fuel and relieves the burden on the environment to the tune of approximately 2000 kg of CO2 emissions.
The proof is in the wind tunnel: “boat tail” saves 1000 l of diesel
In addition to this, at the instigation of Mercedes-Benz a working group of truck and trailer manufacturers under the umbrella of the German Association of the Automotive Industry has carried out further tests on the aerodynamics of semitrailer tractors. In the framework of this study, measurements in the wind tunnel at Mercedes-Benz concluded that modifications to the cab such as a supposedly aerodynamic extension result in merely minimal improvements where wind resistance is concerned.
There is much more potential in aerodynamic measures at the tail end of the trailer; a minor extension of the tail end in the form of a “boat tail” brings significant benefits. Four flaps measuring just 400 mm in length and positioned at an angle reduce the wind resistance of the entire semitrailer tractor by nearly ten percent. In arithmetical terms this corresponds to virtually three percent less fuel consumption or more than 1000 l of diesel a year. At the same time it saves the environment over 2600 kg of CO2 emissions. This is also proven by the simulations which have been carried out for the aero trailer.
Future integration of the trailer in telematics systems
As part of its “Truck and Trailer 7plus” initiative Mercedes-Benz is working on further holistic measures aimed at lowering fuel consumption. One of the projects involves the inclusion of information on the trailer’s tyres in the tyre pressure display in the cab of the new Actros.
The FleetBoard subsidiary – which leads the field when it comes to telematics for commercial vehicles – is also currently developing methods of integrating the trailer in its systems. This forms the basis for concrete opportunities for increasing economy and therefore environmental compatibility to an even greater extent. The nearest available suitable trailer for a particular job, the correct allocation of truck and trailer, the transmission of trailer data to the truck’s cockpit – these and other ideas could soon become reality.
Trailer axles from the truck manufacturer, highest service quality
Another idea has already been implemented: since the launch of the first-generation Mercedes-Benz Actros 15 years ago the company has been one of the leading manufacturers of trailer axles in Europe. The unique DCA Airmaster trailer axle is one of its outstanding products: it stores the compressed air for the trailer in the axle housing. This saves the air vessels for the trailer and reduces the weight, and with it fuel consumption and emissions.
TruckWorks is a further example of integrating the trailer in an overall system. More than 80 Mercedes-Benz locations now deal with the entire service for the tractor unit, trailer and bodies, plus their associated components. TruckWorks ensures the same levels of top quality at each location and saves the operators of semitrailer/tractor combinations expense and unnecessary journeys – which in turn means less fuel consumption and reduces the burden on the environment.
New Actros systematically geared towards utmost efficiency
The inclusion of the trailer supplements the already superb economy displayed by the new Mercedes-Benz Actros. It is driven as economically as it is powerfully with a highly sophisticated drive system – perfectly matched to the particular application in question – from a single source. With a view to achieving the utmost efficiency the new Actros spent 2600 hours in the wind tunnel alone, being meticulously optimised – as intensively and carefully as no truck before it. As a result the new Actros is the most frugal and therefore the cleanest truck in its class.
Know-how from over 25 years of research into aerodynamics
There is a long tradition of adopting a holistic approach to the truck and trailer at Mercedes-Benz. Even back in the mid-1980s the development engineers were carrying out in-depth investigations into the aerodynamics of entire vehicle combinations. These involved research into the effect of air deflector panels, side trim panels, edge radii and rear end tapers.
The fundamental knowledge gained back then is still valid to this day and forms the basis for the current investigations. In those days the focus was merely on saving fuel for economic reasons; priority had not yet been given to protecting the environment by reducing CO2 output. Today, some 25 years later, environment relief, conservation of resources and economy represent seamless additions, in the form of the “Truck and Trailer 7plus” initiative.
[attachmentid=1627768139] [attachmentid=1627768140] [attachmentid=1627768141] [attachmentid=1627768142]
- a small aerodynamic device attached close to the body of the car
- helps to lead the air off the rear of the car
- reduces the low-pressure zone behind the car lowering drag and instability
- does not increase traction by downward force
- makes the car look better (sometimes)
[attachmentid=1627768143]
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