Q: diesel engine Volkswagon

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1- Why there is no VVT in diesel engine. 2- What the procedure to stop diesel engine

Hello - the choice to NOT use variable valve timing (VVT) in the current VW TDI engines was apparently a design choice. Some say the use of exhaust gas recirculation (and bypass) was more effective with this engine. The relatively new EA288 diesel engine from VW does utilize VVT, and will eventually replace the TDI engines in most if not all VW models. Stopping a diesel is usually best done by stopping fuel flow into the combustion chamber. Other popular techniques included letting the clutch out while the car is gear, and with the brakes applied. Certainly appropriate if no other choice is available, but hard on the transmission and axles.

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