Quote:
Originally Posted by aerohead
*Gasoline Direct Injection engines dispense with the throttle altogether,running at WOT just as with a Diesel,doing all the fuel metering with the electronic fuel injection.
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I do not believe that this is the case. Gasoline engines don't tolerate the immense swings of mixture as well as diesels do, so there is more need to restrict the air flow into the combustion chamber than with a diesel.
I'm pretty sure that most GDI engines still have throttles. Some may only be used for warm-up (I think I've read that somewhere) but I am pretty sure that most do control the engine load with a throttle mechanism.
-soD