A、a higher cetane number of fuel oil
B、the diesel fuel used having a high viscosity
C、mechanical rigidity in the lube pump mechanism
D、a decrease rigidity in the fuel pump delivery pressure
更多“Injection lag in a diesel engine may be caused by（）”相关的问题
A、A.excessive fuel penetration B、B.prolonged injection lag C、C.reduced ignition lag D、D.prolonged ignition lag
A、A.obtain injection lag B、B.help mix fuel and air C、C.increase combustion pressure D、D.utilize higher injection pressures
A、An increase in compression ratio will increase the ignition lag B、An increase in compression ratio will decrease the ignition lag C、A decrease in compression ratio will decrease the ignition lag D、A decrease in ignition lag will increase the compression ratio
A、The cetane number has no affect on injection lag B、The cetane number is an indication of the fuel’s viscosity C、Ignition lag is reduced with fuels having a high cetane number D、The cetane number is of little significance in the combustion
A、produce the heat for ignition B、decrease injection lag C、increase ignition delay D、aid in exhausting burnt gases
A、The cetane number affects the amount of injection lag B、The cetane number is an indication of the fuels viscosity C、Ignition lag is reduced with fuels having a high cetane number D、The cetane number is of little significance in the combustion process
A、improper adjustment of the bypass valve B、a dribble in the fuel injection nozzle C、insufficient leak-off through injection nozzle packing D、a malfunctioning injection nozzle
A、compressibility of the fuel B、high fuel oil supply flow C、scored plunger and barrel packing D、excessive air turbulence
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