SDI ? какво значи?
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- steeN
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от steeN » 09 Май 2004, 22:31
VW 
= Audi
= Audi- Practical men, who believe themselves to be quite exempt from any intellectual influence, are usually the slaves of some defunct economist. – John Maynard Keynes
- Above all, we must realize that no arsenal or no weapon in the arsenals of the world is so formidable as the will and moral courage of free men and women. It is a weapon our adversaries in today's world do not have. – Ronald Reagan
- Life, liberty, and property do not exist because men have made laws. On the contrary, it was the fact that life, liberty, and property existed beforehand that caused men to make laws in the first place. – Frédéric Bastiat
- Don't eat the yellowcake.
- Above all, we must realize that no arsenal or no weapon in the arsenals of the world is so formidable as the will and moral courage of free men and women. It is a weapon our adversaries in today's world do not have. – Ronald Reagan
- Life, liberty, and property do not exist because men have made laws. On the contrary, it was the fact that life, liberty, and property existed beforehand that caused men to make laws in the first place. – Frédéric Bastiat
- Don't eat the yellowcake.
- deliveryman
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от deliveryman » 09 Май 2004, 22:35
As is typical of a V8 TDI, mixture preparation is performed by a common rail system with one high-pressure pump and one rail per cylinder bank. On the new generation of engines, the injection pressure has been raised from 1350 bar to 1600 bar. This results in even finer atomisation of the fuel, in other words in more effective mixture preparation. The consequence is not merely extra power and torque, but also reduced fuel consumption and emissions.
The second-generation solenoid-valve injectors with 7-hole nozzles are also new. They, too, play a major part in making the combustion process ultra-efficient, and thus improving the quality of emissions, by distributing the fuel very homogeneously throughout the combustion chamber. The result is that even though the Audi A8 4.0 TDI quattro - unlike its challengers - has permanent four-wheel drive, it clearly undercuts the limit values specified in the EU III standard.
What is more, the new common rail system is capable of injecting fuel several times per combustion cycle. Single and double pilot injection produces a smoother combustion process; the benefits of this are most immediately apparent in the engine's acoustic behaviour. The 4.0 TDI engine is not only much quieter and smoother-running than its predecessor, it now unquestionably serves as the benchmark in its class.
The second-generation solenoid-valve injectors with 7-hole nozzles are also new. They, too, play a major part in making the combustion process ultra-efficient, and thus improving the quality of emissions, by distributing the fuel very homogeneously throughout the combustion chamber. The result is that even though the Audi A8 4.0 TDI quattro - unlike its challengers - has permanent four-wheel drive, it clearly undercuts the limit values specified in the EU III standard.
What is more, the new common rail system is capable of injecting fuel several times per combustion cycle. Single and double pilot injection produces a smoother combustion process; the benefits of this are most immediately apparent in the engine's acoustic behaviour. The 4.0 TDI engine is not only much quieter and smoother-running than its predecessor, it now unquestionably serves as the benchmark in its class.
VW не е равно на Audi
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