單項選擇題
A.the production of high pressure gases B.the removal of expended combustion gases C.the admission of air to the cylinder D.all of the above
A.Speed limiting governor B.Over-speed governor C.Over-speed trip D.Over-speed relay
A.decreased viscosity B.decreased pour point C.increased flash point D.increased viscosity
A.provide a reservoir for cylinder lubrication B.pump oil into the combustion space for cylinder cooling C.prevent excessive lubricating oil consumption D.allow hydraulic oil film formation on the cylinder
A.produce the heat for ignition B.decrease injection lag C.increase ignition delay D.aid in exhausting burnt gases
A.low sulfur content in the fuel B.a loose injector inlet connection C.late fuel injection D.high injection pressure
A.Shape of the piston crowns B.Increasing the compression ratios C.Increasing the piston crowns D.Increasing the turbocharger gear ratio
A.Spark plug B.Heat of compression C.Carburetor D.Glow plug
A.low compression temperature B.low ambient air pressure C.high lube oil pump pressure D.high fuel oil booster pump pressure
A.later and closing earlier B.later and closing later C.earlier and closing earlier D.earlier and closing later
A.quantity of fuel injected is decreased B.quantity of fuel injected will always be increased C.start of injection is advanced D.duration of injection will always be greater
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