单项选择题
Late fuel injection timing is indicated by （）
A.lower than normal cylinder pressure and low exhaust temperature
B.lower than normal cylinder pressure and high exhaust temperature
C.higher than normal cylinder pressure and low exhaust temperature
D.higher than normal cylinder pressure and high exhaust temperature
相关考题
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单项选择题
The process of supplying a diesel engine cylinder with air at a pressure greater than atmospheric is called（）.
A.engine displacement
B.super-aspirating
C.air injection
D.supercharging -
单项选择题
In a diesel engine, blow-by（）
A.increase exhaust back pressure
B.causes excessive crankcase pressure
C.can only be detected by a compression check
D.decreases fuel consumption -
单项选择题
A diesel engine will lose power if fuel injection occurs too late in the cycle, because the（）
A.fuel droplets will burn as they leave the fuel injector
B.fuel will not be properly atomized in the cylinder
C.maximum expansion of the burned fuel cannot take place in the cylinder
D.compression pressure will be too low to cause fuel ignition
