A4 1.9 tdi

[Deltabiturbo]

Boas,

Qual a diferença entre o 1.9 TDI do Audi A4 B5 facelift (1997–2001), com 115 cv, e o do A4 B7, sendo que neste o 1.9 TDI também tinha 115 cv?

É o mesmo motor?

Lembro-me que o TDI do A4 B5 foi o primeiro com injector bomba e na VW foi o primeiro o ter a designação TDI.

Deixo imagens dos modelos para ser mais fácil identificar:

[Maraki]

Realmente apresentam os mesmos cavalos e binário às mesmíssimas rotações.

O bloco em si também é o mesmo e curiosamente o B5 anda mais que o B7 (devido ao peso é claro).

O que muda essencialmente é o turbo e a injecção.

[MGomes]

A versão do motor não é a mesma.

Esse último de 115cv, que houve no B6 e no B7, foi feito com base no de 100cv, e foi a última versão do 1.9TDI que houve, e apenas usado nos A4.

Tens aqui a informação da Audi da altura:

April 6, 2004

Audi A4 1.9 TDI: Now With 115 bhp

A new, more potent version of the 1.9 TDI engine is being added to the range of engines offered for the Audi A4: in future the Audi A4 1.9 TDI will deliver 85 kW (115 bhp) at a torque of 285 Nm instead of the previous 74 kW (100 bhp) and 250 Nm of torque. At the same time, this new performance-enhanced engine satisfies the stringent emission standard EU4, which is not due to become law until 2006. The customer consequently benefits in two respects: from more power and from tax exemption as a result of reduced emission levels.

Thanks to an increase in power – up 15 bhp – and torque – up 35 Nm – the Audi A4 1.9 TDI gains noticeably in dynamism and pulling power. The saloon accelerates from a standstill to 100 km/h in 11.2 seconds, almost one second faster than the 74 kW model. This front-wheel-drive model with 5-speed gearbox reaches a top speed of 201 km/h (up 6 km/h). The fuel consumption (overall) of the four-cylinder engine remains almost as low as before at 5.6 litres of diesel per 100 km. With a tank capacity of 70 litres, this model is consequently capable of covering over 1,200 kilometres without having to refuel.

The new, more powerful engine version is based largely on the 74 kW unit. Powerplant engineers succeeded in boosting the power delivered by the 1.9-litre TDI by further fine tuning of the high-pressure pump-injector fuel injection in conjunction with new Bosch EDC 16+ engine management. This improves mixture preparation and further increases efficiency.
Optimised pistons, now without recesses, as well as further detailed modifications to the electrically controlled exhaust-gas recirculation with a clearly improved cooling output and a more efficient close-coupled catalytic converter ensure that the TDI engine already satisfies what are currently the most stringent emission limits around.

The development engineers have adapted the entire pump-injector system in detail: a modified spray angle and a higher supply rate are the result. The latest generation of Bosch engine management with further increased computing power makes it possible to use the greater potential of high-pressure injection resulting from these changes to maximum effect. The recirculated exhaust gases are cooled to a significantly greater extent in the new engine. This lowers the combustion temperature in the cylinder and reduces nitrogen oxide emissions.

The Audi A4 1.9 TDI with 85 kW (115 bhp) engine is expected to be in dealers' showrooms in June.

Nada tem a ver com a versão de 115cv do B5.

[Deltabiturbo]

E porque é que este motor só foi usado no A4?

Ao tempo tinha feito sentido instalar noutros modelos do grupo...