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
更多“In the common rail system, excessive pressure in the header may be caused by （）”相关的问题
A、stored in a common fuel line B、pumped by the injection pump C、at low pressure D、already atomized
A、fluctuates with the engine speed to some extent, independent of the engine speed B、keeps constant at all engine speed, dependent on the engine speed to some extent C、keeps constant at all engine speed, independent of the engine speed D、is decided by the engine speed, constant at all engine speed
A、by injection pumps B、at a time decided by the injection pump timing C、by a signal opening the magnetic valves D、at a time decided by the cam directly
A、at high speed and full load B、at low speed and part load C、when heavy fuel oil is used at sea D、when the ships run long distance
A、A common rail engine；conventional engines B、A conventional engine；common rail engines C、A marine diesel engine；most other engines D、A two-stroke engine；four-stroke engines
A、can’t be controlled very precisely B、can’t be controlled as flexibly as the separate pump system C、can be controlled as flexibly as the separate pump system D、can be controlled more precisely and flexibly
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