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單項選擇題

The purpose of compressing the air within the cylinder of a diesel engine is to （）

A.produce the heat for ignition
B.decrease injection lag
C.increase ignition delay
D.aid in exhausting burnt gases

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單項選擇題

A smoking exhaust from an operating diesel engine could be caused by （）

A.low sulfur content in the fuel
B.a loose injector inlet connection
C.late fuel injection
D.high injection pressure

單項選擇題

What is commonly used to create turbulence in a diesel engine combustion system?（）

A.Shape of the piston crowns
B.Increasing the compression ratios
C.Increasing the piston crowns
D.Increasing the turbocharger gear ratio

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