Fiat Bravo 2007 Vs Vw Golf V Vs Renault Megáne

[LB]

O Trabant também é bom !!!

[Ricardo_850]

dou razao ao bizarro.. acho tambem que no que toca a imagem o golf V nao fica atras do bravo apesar de nao mostrar tanta "raça" e ser francamente um retrocesso relativamente ao golf IV.. no que toca a motores, a VW oferece algo que nenhuma das outras mascar aqui mencionadas tem, que sao os motores TDI 1.9 e 2.0 mas se analizarmos o preço, perdemos logo as ilusoes pois a relaçao preço potencia nao compensa (coisa que atualmente os vw nao sao é carro do povo)..

cumps  

[darth vader]

:love:  

[darth vader]

 

[BrunoMOF]

o 1.4 da VW que os Polos e os Ibiza utilizam parecem uma batoneira. Tem um bater mesmo mau, parece que o motor não tem ritmo ou batidas certas. Só por ai não gosto do motor.

[Bizarro]

o 1.4 da VW que os Polos e os Ibiza utilizam parecem uma batoneira. Tem um bater mesmo mau, parece que o motor não tem ritmo ou batidas certas. Só por ai não gosto do motor.

Isso é o famoso 1.4TDI com os belos 3cilindros... aquilo tem realmente um som esquisito...

Mas o 1.4 otto deve ser bem mais interessante...

[dux]

o 1.4 da VW que os Polos e os Ibiza utilizam parecem uma batoneira. Tem um bater mesmo mau, parece que o motor não tem ritmo ou batidas certas. Só por ai não gosto do motor.

É natural, o 1.4 TDi é 3 cilindros!

[dux]

dou razao ao bizarro.. acho tambem que no que toca a imagem o golf V nao fica atras do bravo apesar de nao mostrar tanta "raça" e ser francamente um retrocesso relativamente ao golf IV.. no que toca a motores, a VW oferece algo que nenhuma das outras mascar aqui mencionadas tem, que sao os motores TDI 1.9 e 2.0 mas se analizarmos o preço, perdemos logo as ilusoes pois a relaçao preço potencia nao compensa (coisa que atualmente os vw nao sao é carro do povo)..

cumps

O reinado dos motores TDi chegou ao fim, a VW aderiu ao common rail e vai começar progressivamente a substituição dos mesmos.

Entretanto a FIAT também vai lançar um motor 2.0 Multijet.

 

[marky]

O reinado dos motores TDi chegou ao fim, a VW aderiu ao common rail e vai começar progressivamente a substituição dos mesmos.

Entretanto a FIAT também vai lançar um motor 2.0 Multijet.

De onde saiu essa informação??? Cheira-me a tanga....

Se assim for....agora é que os artistas vão aos arames

[marky]

Ao que parece é mesmo verdade...o 4.2TDI audi já é common rail ao que parece.
 

[Secos]

Sabem pk só agora o grupo Vag utiliza o common rail? Pk sao uns atrasados.
Quando saiu o primeiro turbo diesel da vw ja a Fiat o tinha ha anos.
E agora vao investir no common rail algo que a Fiat tem ha anos.

Conclusao: Sao uns atrasados no que toca a tecnologia. Só a lançam anos depois pk primeiro querem ver se as outras marcas têm sucesso com essa tecnologia.

Fiat é o universo automovel os restantes grupos sao apenas planetas minusculos :yes:

     

[dux]

De onde saiu essa informação??? Cheira-me a tanga....

Se assim for....agora é que os artistas vão aos arames

Aqui fica (ainda não tive tempo para traduzir...)

VW says goodbye to TDI, hello to common-rail

VW will be dumping its line of TDI diesels by 2007 and switching to a common-rail design for all of its oil-burners, with annual production of the new engines totaling over 2 million units. This announcement can probably be taken as evidence that mechanical diesel injection has reached its practical limits, despite the relatively high level of refinement that VW has achieved using the technology. Indeed, there will probably be a number of faithful TDI owners who see no reason to give up the system that has brought respectable power and refinement to passenger-car diesels.



Current TDI products sold here in the states uses a four-port radial injection pump, driven off the timing belt, to achieve the 20,000 PSI or so needed for directly injecting fuel into the cylinder, while VW diesel engines sold elsewhere are available with an innovative system that uses one pump assembly per cylinder. Both systems rely on complex electromechanical and electrohydraulic means to control the volume and timing of fuel delivery. It?s expensive, somewhat finicky (a diesel mechanic in a good mood is indeed quite rare), and doesn?t offer the exacting control over the injection sequence that?s required to meet upcoming emissions targets and customer expectations.

Common-rail injection systems operate much like standard gasoline port injection systems, with a single pump pressuring one or more fuel rails (depending on the physical layout of the engine, there?s usually one rail per cylinder bank), and electrically-actuated injectors providing precise control over fuel delivery. The main difference is the pressures involved - 20,000 PSI and beyond, compared to 40-55 PSI for a typical port injection system. Obviously, it takes one heck of an electromechanical injector to open and close at such pressures, but the technology has come a long ways in recent years, and such systems are quickly obsolescing mechanical injection pumps just as EFI replaced carburetors two decades ago. This system is far less complex from a mechanical standpoint, and things such as multi-pulse fuel delivery become easy to implement.

fonte: autoblog
 

[dux]

E mais um complemento:

VW to Switch to Common-Rail Diesel Technology from PD-TDI

Is There a Future for Clean Burning Diesels in North America?

In North America, the three letters "TDI" signify diesel, along with massive savings on fuel and over 1,000 kilometers to the tank, if your middle name isnt "Lead-Foot". Diesel technology is inarguably one of Volkswagens strongest cards, particularly within the North American market where most automakers dont sell their oil burning products. Purveyor of the most vehicles powered by Rudolphs ingenious form of combustion, a large portion of VWs compact cars, such as the New Beetle, Jetta and Golf are delivered in TDI form, while the previous generation of Passat (still available in wagon trim) and last years Touareg luxury SUV also sporting diesel technology.

Aside from being
The acronym "TDI" signifies diesel to most North Americans, along with massive savings on fuel and over 1,000 kilometers to the tank. (Photo: Volkswagen of America)
driven towards diesel for the obvious fuel-saving incentives, diesel engines today have come a long way from those of just a decade ago. Diesel ownership no longer means coping with thick plumes of black soot, intrusive engine noise and noxious odors; most modern diesels are nearly as quiet as their gasoline counterparts, likewise for emissions. Performance has also improved, thanks to turbocharging and advanced gearboxes (stay tuned for a review of the 06 New Beetle
Diesel ownership no longer means coping with thick plumes of black soot, intrusive engine noise and noxious odors; most modern diesels, like the TDI fitted into the new Jetta, are nearly as clean and quiet as their gasoline counterparts. (Photo: Volkswagen of America)
TDI with a 100-hp four-cylinder featuring 177 lb-ft of torque paired to VWs new 6-speed DSG twin-clutch gearbox).

In an effort to improve efficiency and emissions, Volkswagen Auto Group recently announced that it would be switching to common-rail turbo diesel technology, starting with a new wave of diesels beginning in 2007 - perfectly timed to meet new tougher North American emissions regulations that will also see cleaner diesel fuel introduced across the continent. Wait...
Unit-injection was revolutionary at the time of its introduction and helped to bridge the gap between the noisy, dirty engines of the past and modern diesels of today. (Photo: Rob Rothwell, American Auto Press)  
Volkswagen, the industry leader in diesel sales, not on the forefront of diesel technology?
In 1998, VW introduced PD-TDI, or Pumpe-Düse, which is German for pump-nozzle injection. This sort of fuel management, known as unit-injection, was revolutionary at the time of its introduction and helped to bridge the gap between the noisy, dirty engines of the past and modern diesels of today. As a result an entire generation has been eased back into the idea of diesel-powered cars. PD-TDI is standard fare on all Volkswagen turbodiesels, including those of the latest New Beetle and Jetta TDIs.

But for all of its landmarks
No diesel-powered vehicle currently on sale in North America can meet the 2007 standards. (Photo: Alexandra Straub, American Auto Press)  
and sales, VW will be moving away from its Pumpe-Düse engine technology which it established nearly eight years ago in order to meet increasing emissions standards from Europe, as well as within North America. If you havent already heard, the U.S. Governments Tier II Emissions regulations have had manufacturers scrambling to figure out a way to improve their diesel particulate ratings before the 2007 deadline. Currently, no diesel-powered vehicle currently on sale in North America can meet these standards. Given the fact that a good chunk of VWs sales are in the diesel market, its no wonder theyre switching.

Pumpe-Düse technology, developed in collaboration with Bosch-Siemens, centers around direct injection technology (the DI in the TDI). With four individual
Common-rail technology is hardly a revolutionary concept, introduced to the Dodge Ram 2500/3500 Cummins pickup in model year 2003 and updated again for the 2004.5 model year. (Photo: DaimlerChrysler)
fuel injectors and fuel pump units, one for each cylinder, small amounts of super-high pressurized fuel are misted directly into the combustion chamber. This principle is similar to that used on the FSI direct injection technology found on VWs new state-of-the-art 2.0-liter turbocharged inline-four and 3.6-liter VR6 engines, the former found in the new Jetta and Passat and latter only available in the larger sedan. VW also invested in super-quick heating glow plugs as part of its TDI package, delivering instantaneous startups, even on the most cold and frigid northern U.S. winters.

fonte: automobile.com
 

[dux]

Quanto à Renault

Neste momento tem o motor 2.0 dCi de 150 CV, e no princípio de 2008, este mesmo 2.0 litros vai ter mais 25 CV (totalizando 175 CV) por um custo pouco expressivo, de mais 1500 euros.

Mais: na Primavera estará à venda um Diesel de 110 CV que, ao recorrer ao um motor 1.5 litros, garante um forte ‘desconto’ no preço final.

[BrunoMOF]

tudo envolvido num grande markting, pois sem ele a renault não vende.