A、exhaust pressure
B、valve spring pressure
C、rocker arm movement
D、wrist pin movement
更多“Valves in the cylinder head of a diesel engine are opened by the direct action of the（）”相关的问题
A、leaky discharge valves on the LP cylinder B、leaky discharge valves on the HP cylinder C、insufficient intercooler cooling D、low ambient air pressure
A、fuel valves；exhaust valve B、exhaust valves；inlet valve C、fuel valves；inlet valve D、exhaust valves；fuel valve
A、The solenoid valves directs high pressure gas to the valve lifting device raising the suction valve off its seat and causing one specific cylinder to become unloaded B、The solenoid valves directs high pressure gas to the underside of the unloading piston, causing it to rise and allowing the recirculating ports to be opened C、When the solenoid valve becomes energized, the valve ports become closed, allowing discharge pressure to build up above the piston, shifting it and causing it to unload D、The solenoid valve allows the refrigerant to pass from the suction chamber to the top of the unloader piston, causing the piston to lift and unload the cylinder
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