A、varying the pump discharge pressure
B、varying the pump return pressure
C、rotation of the pump plunger
D、rotation of the pump barrel
更多“The amount of fuel delivered by a helical plunger fuel injection pump is controlled by （）”相关的问题
A、indicates the amount of abrasive material in the fuel B、affects the starting ability of a cold engine C、determines the amount of fuel penetration engine D、affects the compression ratio of an operating engine
A、is an indication of the amount of noncombustible material present in the oil B、indicates the quantity of energy released by burning a unit amount of the fuel C、is useful for determining proper atomization temperatures D、reflects the overall thermal efficiency of the fuel oil service system
A、quantity of fuel to be received B、flash point of the fuel as it is received C、fuel temperature as it is received D、viscosity of the fuel being received
A、gives up large amount of heat B、gives off large amount of heat C、gives up large amount of steam D、gives off large amount of steam
A、ignition quality of the fuel B、high heating value of the fuel C、amount of carbon residue after combustion D、internal flow resistance in the injectors
A、The cetane number affects the amount of injection lag B、The cetane number is an indication of the fuels viscosity C、Ignition lag is reduced with fuels having a high cetane number D、The cetane number is of little significance in the combustion process
A、controlling the amount of fuel injected into the cylinders B、varying the speed of the turbocharger C、adjusting the compression ratio D、changing the timing of the fuel injection camshaft
A、The amount of fuel injected will be increased B、The start of injection will be retarded C、The nozzle will permit fuel to dribble D、The spray pattern will be distorted
A、valve will open later B、valves will close later C、amount of fuel injected will be increased D、amount of fuel injected will be decreased
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