更多"A common trouble with the fuel pump"的相关试题:
[单项选择]A common trouble with the fuel pump plungers or fuel valve spindle is （）.
A. broken down
B. stuck
C. oil leakage
D. carbonized
[单项选择]Fuel pump index is （）.
A. the viscosity index
B. the fuel oil contents
C. the starting speed
D. the reading at the rack
[单项选择]Engine fuel pump index is （）.
A. the viscosity index
B. the fuel oil contents
C. the starting speed
D. the reading at the rack
[单项选择]The major cause of fuel pump and injection system problems is （）
A. improper adjustments
B. contaminated fuel
C. kinked fuel lines
D. excessive engine vibration
[单项选择]While overhauling a jerk-type fuel pump it is necessary to replace the pump plungerWhich of the parts listed below must also be replaced?（）
A. Delivery check valve
B. Pump barrel
C. Tubing to the injector
D. Cam follower
[单项选择]The fuel booster pump and steam to fuel heater, together with fuel pipe heater tracer line should be shut off as soon as the （） order is acknowledged.
A. finished with engines
B. stop
C. stand by
D. full ahead
[单项选择]An increase in the fuel injection pump discharge pressure can be caused by a/an （）
A. leaking delivery valve
B. excessive bearing end play
C. plugged injector spray hole
D. increased plunger stroke
[单项选择]The plunger in the fuel injector pump, usually operated by a （）, is driven up and down when working.
A. crankshaft
B. camshaft
C. piston rod
D. rack and pinion
[单项选择]The fuel injector pump is operated by （） which drives the plunger up and down.
A. a separate motor
B. a cam
C. a generator
D. a chain
[单项选择]The most common diesel engine fuel system problems are caused by （）.
A. incorrect adjustments
B. dirty fuel
C. broken fuel lines
D. excessive vibration
[单项选择]Movement of the pump control rack in a fuel injection system using individual plunger-type pumps （）
A. changes the position of the fuel inlet ports
B. changes the length of the pump stroke
C. varies the quantity of fuel delivered
D. varies the compression of the delivery valve spring
[单项选择]Fuel injection uses the jet pump system and a Woodward type hydraulic （） is used to control engine speed.
A. controller
B. governor
C. instrument
D. apparatus
[单项选择]The fuel is supplied to the pump through ports or openings in the （） or cylinder of the pump.
A. bottle
B. injector
C. piston
D. barrel
[单项选择]In a jerk pump, the amount of fuel that will be forced through the spray nozzle on each upward stroke of the plunger depends on （）
A. the pump supply pressure
B. the slope of the fuel cam
C. how the plunger is rotated
D. the number of sleeve segments engaged with the rack
[单项选择]In a common rail engine, the fuel is injected into cylinders（）
A. by injection pumps
B. at a time decided by the injection pump timing
C. by a signal opening the magnetic valves
D. at a time decided by the cam directly
[单项选择]In common rail engines, the fuel is（） before is injected into the cylinders.
A. stored in a common fuel line
B. pumped by the injection pump
C. at low pressure
D. already atomized
[单项选择]Fuel injection systems meter fuel, atomize fuel, and （）.
A. create turbulence in the combustion chamber
B. aid in completing cylinder scavenging
C. inject fuel at the proper time
D. minimize fuel penetration into the cylinder
[单项选择]Machinery driving fuel oil transfer and fuel oil service pumps must be fitted with a remote means of stopping the machinery from （）.
A. within the space concerned
B. outside the space concerned
C. the throttle station
D. within the fire room
[单项选择]Fuel injectors used in heavy fuel oil systems are usually provided with cooling to reduce（）.
A. cold corrosion of the nozzles
B. fuel viscosity for better atomization
C. carbon accumulation on the nozzles
D. fuel detonation in the cylinders
