A、caused by retarded injection timing
B、caused by a mechanical defect in one cylinder
C、caused by high fuel injection pressures
D、normal for these conditions
更多“The knock occurring when a cold diesel engine is started and continues while running at low speed, but stops when the engine reaches normal operating speed and temperature, is（）.”相关的问题
A、Should knocking occur B、If knocking occur C、Should if knocking occurs D、If occur knocking
A、low coolant temperature B、insufficient fuel C、high ambient temperature D、carbon buildup on the injector tips
A、misalignment or worn main bearings B、insufficient cylinder lubrication C、defective or poorly fitted valves D、all of the above
A、a shortened ignition delay period B、a lean fuel/air mixture C、excess fuel in the combustion chamber D、rapid vaporization of injected fuel droplets
A、A.a shortened ignition delay period B、B.a lean fuel/air mixture C、C.excess fuel in the combustion chamber D、D.rapid vaporization of injected fuel droplets
A、low exhaust temperature B、low firing pressure C、fuel knock in each cylinder D、mechanical knock in each cylinder
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