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Old 30-04-2012, 09:12 AM
Richard L Richard L is offline
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Join Date: Oct 2003
Location: England
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Default Re: Why don't we see more PWMV kits on diesels

Forums such as the topics on cummins, GM, banks and diesel trucks.

Gasoline engine requires good control of AFR to maintain consistant power. Diesel has plenty of air, power output is directly proportional to amount fuel dump into the engine. For that reason, injecting the precise amount of water/methanol is not as important, privided the EGT is under control.

Manifold pressure in excess of 100psi requires (as mentioned by you) requires a machanically driven pump. Those application is only a small proportion to the norm. I think the market we willbe aiming for is the modern DI diesel where the PWM system will excel and gives good consistant results. I totally agree with your marklet analysis.

The DI tecnology has brought SI (spark ignition) and diesel enigne closer. Most SI/DI engines use the excess-air method for cruising and mid throttle by having the throttle plate fully open and use lamdba sensors to target afr.
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