In an actual SI engine the pumping loss with respect to speed
A)decreases
B)Increases
C)remains constant
D)nothing to do with speed

Name: In an actual SI engine the pumping loss with respect to speed A)decreases B)Increases C)remains constant D)nothing to do with speed
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Question

Quizplus · Accepted Answer

In an SI engine, as speed increases, the throttle is more open to allow more air-fuel mixture, reducing the vacuum in the intake manifold and increasing pumping losses.

In an Actual SI Engine the Pumping Loss with Respect