Pressure in an operating hydraulic system is developed ().
A、only by the pump as its primary function
B、by resistance to the fluid flow through the system
C、by the thermal input to the systems fluid
D、solely by the charge applied by the accumulators
A、only by the pump as its primary function
B、by resistance to the fluid flow through the system
C、by the thermal input to the systems fluid
D、solely by the charge applied by the accumulators
A、decrease in maximum cylinder pressure B、increase in ignition lag C、decrease in fuel consumption per horsepower-hour D、decrease in exhaust manifold pressure
A、noise and vibration B、an increase in discharge pressure C、an increase in suction pressure D、lifting of the relief valve
A、compression pressure B、lube oil header pressure C、scavenge air pressure D、piston ring blow-by
A、an obstruction in an cylinder B、water accumulation in some engine cylinders C、low starting air pressure D、low scavenge air pressure
A、A.bypass the high pressure stage to the low pressure stage on 100% of the air compressors in service B、B.prevent excessive inter-stage pressure buildup C、C.control compressor discharge pressure D、D.remove all but the frictional load during starting
A、power B、maximum pressure in a cylinder C、mean pressure in a cylinder D、all of the above
A、Closing of the solenoid valve B、Closing of the expansion valve C、An increase in the suction pressure D、Decreasing the suction pressure
A、an immediate crankcase explosion B、oil contamination in the compressed air C、a decrease in compressor capacity D、no immediate loss of the compressed air capacity