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
更多“Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.”相关的问题
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 coolant temperature B、insufficient fuel C、high ambient temperature D、carbon buildup on the injector tips
A、A.excessive fuel penetration B、B.prolonged injection lag C、C.reduced ignition lag D、D.prolonged ignition lag
A、A.excessive surging at governed speed B、B.combustion knock under load C、C.poor fuel combustion D、D.all of the above
A、keep piston crown temperatures elevated for smoother combustion B、reduce the possibility of overheating the top compression ring C、help retain the heat of compression to prevent ignition delay D、help retain the heat of compression to prevent combustion knock
A、Should knocking occur B、If knocking occur C、Should if knocking occurs D、If occur knocking
A、Excessively early injection timing B、Combustion knock C、Leaking piston rings D、Light load
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