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
更多“During the fuel injection period, fuel pressure must exceed cylinder gas pressure to （）.”相关的问题
A、expansion space to leave in a tank B、flash point at which the fuel will burn C、temperature to which the fuel must be heated D、rate at which the fuel can be pumped during transfer operations
A、expansion space to leave in a tank B、flash point at which the fuel will burn C、temperature to which the fuel must be heated D、rate at which the fuel can be pumped during transfer operations
A、the water produced during combustion B、the sulfur in the fuel C、unburned fuel oil D、all of the above
A、Reduce the pumping rate by closing the deck filling valve B、Close all overflow valves C、Place 5 gallon containers under all flange connections in the fuel line D、Reduce the pumping rate and sound tanks frequently as the level rises
A、increasing the quantity of starting air B、increasing the lube oil pressure C、heating the engine fuel supply D、heating the engine jacket water
A、A.increasing the quantity of starting air B、B.increasing the lube oil pressure C、C.heating the engine fuel supply D、D.heating the engine coolant
A、A.proceed with fueling operation B、B.have helicopter move to a safer location C、C.wash spilled fuel away with a flood of water D、D.clean spilled fuel with rags
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