A、cam action
B、spring force
C、fuel oil pressure
D、firing pressure
更多“Differential needle valves used in fuel injectors are directly closed by（）”相关的问题
A、ensure penetration and distribution of the fuel in the combustion chamber B、ensure the needle valve is flushed clean during each injection C、prevent combustion gas blowback into the open needle valve D、prevent reflected pressure waves when the needle valve closes
A、An increased air temperature differential between the cooler inlet and outlet B、A decrease in the air pressure differential across the cooler C、Excessive condensate forming in the air box D、A decrease in the air temperature differential between the cooler inlet and outlet
A、A.Replace the batteries B、B.Check the sampling tube for blockage C、C.Adjust the final reading by the amount the needle is displaced from zero D、D.Replace the platinum filament
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