单项选择题
Combustion gases formed in the cylinder of a diesel engine are prevented from blowing past the piston by ()
A.cylinder valves
B.compression rings
C.piston skirts
D.oil rings
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相关考题
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单项选择题
The highest loads applied to the diesel engine crankshaft main bearings are ()
A.axial loads
B.firing loads
C.inertia loads
D.centripetal loads -
单项选择题
For most diesel propulsion and generator engines, the over-speed trip device will stop the engine by ()
A.moving the governor control to stop
B.shutting off the lubricating oil supply
C.tripping the governor emergency stop lever
D.shutting off the fuel supply -
单项选择题
If a diesel engine is smoking excessively under load, the cause could be ()
A.low exhaust back pressure
B.early fuel injection in one of the cylinders
C.compression pressure in one of the cylinders
D.plugged injector holes
