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Old 03-25-2008, 07:22 PM   #3 (permalink)
fabrio.
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tigra AERO - '96 opel tigra
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another way to reduce the pumping losses from an Otto engine, is the control the AFR (air fuel mixture) it allow, to make to work the engine in region of lean burn.
In the lean burn, for the same torque of a normal engine, it is obteined from an greater opening of the throttle .
This one, minimize the pumping losses
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