單項(xiàng)選擇題

Which of the listed set of conditions indicates early fuel injection timing?（）

A.Loss of engine power and high exhaust temperatures
B.Higher than normal firing pressure and low exhaust temperatures
C.High fuel consumption and high exhaust temperatures
D.Lower than normal compression pressure and high exhaust temperature

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單項(xiàng)選擇題

When fuel is injected in a diesel engine cylinder too early, （）

A.ignition may be delayed
B.fuel economy is not affected
C.exhaust gas temperature will be unchanged
D.the exhaust will be clear

單項(xiàng)選擇題

The purpose of an after-cooler is to（）

A.reduce the turbocharger operating temperature
B.increase the pressure of the inlet air
C.increase the density of the inter air
D.reduce the blower operating temperature

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Which of the listed set of conditions indicates early fuel injection timing?（）

你可能感興趣的試題

When fuel is injected in a diesel engine cylinder too early, （）

The purpose of an after-cooler is to（）