你可能感興趣的試題

（）is the main reason that reduces the power advantage of a two-stroke engine over a same size four-stroke one to about（）

A.Inefficient scavenging；twice
B.Inefficient scavenging；1~8 times
C.Fewer strokes in a circle；twice
D.Fewer strokes in a circle；1~8 times

單項(xiàng)選擇題

In a diesel engine, when the fuel is injected into the cylinder,（）

A.the piston is just coming upward from the bottom dead center
B.the piston has moved about one-fifth of the way up
C.the piston has moved most of the way up and almost reached the TDC
D.the piston has just past the TDC

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If the engine is naturally aspirated, or is a small high-speed type with a centrifugal turbocharger, the period of valve overlap（）,ie when both valves are（）, will be and the exhaust valve will close some 10°top dead canter（）.

你可能感興趣的試題

（）is the main reason that reduces the power advantage of a two-stroke engine over a same size four-stroke one to about（）

In a diesel engine, when the fuel is injected into the cylinder,（）

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