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单选题
The fuel injection system is very important, so any trouble of it will （） the operation of the main engine.
A
be affected
B
affect
C
be effected
D
effect
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单选题Fuel injection equipment must be kept in good condition, timed correctly, and the （）in each cylinder must also be carefully balanced so that individual cylinders are not overloaded.A
MIPB
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单选题Movement of the pump control rack in a fuel injection system using individual plunger-type pumps （）A
changes the position of the fuel inlet portsB
changes the length of the pump strokeC
varies the quantity of fuel deliveredD
varies the compression of the delivery valve spring
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deliver proper fuel quantity to the injection nozzleB
provide rapid fuel injection cutoffC
control fuel quantity entering the pump bodyD
control fuel pressure delivered to the combustion chamber
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单选题Which of the following problems is the main source of fuel pump and injection system malfunctions?（）A
Improper lubricationB
Air in the fuel systemC
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单选题Failure of fuel injection is usually due to trouble in the （）.A
exhaust valvesB
mechanical lubricatorsC
cooling water pumpsD
fuel injection pumps
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单选题A full-flow 50μm filter is installed ,（） so the injection system components on the main engine are safeguarded.A
as close to the main engine as possibleB
as close to the main pump as possibleC
just before the fuel valveD
just before the booster pump
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单选题In the common rail system, excessive pressure in the header may be caused by （）A
improper adjustment of the bypass valveB
a dribble in the fuel injection nozzleC
insufficient leak-off through injection nozzle packingD
a malfunctioning injection nozzle
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单选题Diesel engine fuel oil contamination often results in （）A
governor malfunctionsB
fuel injection system malfunctionsC
high cylinder lube oil temperaturesD
low intake temperatures
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单选题The main source of fuel injection system malfunctions is （）A
improper adjustmentsB
contaminated fuelC
coated fuel linesD
excessive vibration
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单选题The key feature of the Sulzer RT-flex system is that it gives complete freedom in the and operation of fuel injection and exhaust valve actuation（）A
meteringB
controlC
usingD
timing
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单选题The term “proper metering”, as applied to a diesel fuel injection system, can be best defined as （）.A
delivering the same quantity of fuel to each cylinder for each power stroke according to engine loadB
maintaining the metering adjustment for a reasonable period under all load conditionsC
timing fuel injection to obtain maximum power and good fuel economyD
distributing the fuel to all parts of the combustion chamber for proper combustion
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单选题If the low level alarm of the diesel fuel day tank fails to function, you can expect trouble from（）A
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water condensed in the cylindersC
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fuel injectorC
governorD
turbocharger
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camshaftB
crankshaftC
governorD
flywheel
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improper adjustmentsB
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单选题Fuel injection uses the jet pump system and a Woodward type hydraulic （） is used to control engine speed.A
controllerB
governorC
instrumentD
apparatus
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fuel line connections to cylinder injection valvesB
gasket surfaces of the fuel oil filtersC
discharge fitting of the fuel injector pumpsD
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单选题On a diesel engine, fuel is delivered into the combustion space by （）.A
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a lubrication oil systemC
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an injection system
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water condensation in the cylindersC
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单选题Fuel is delivered into the combustion space by （）.A
a cooling systemB
a lubricating systemC
an electric systemD
an injection system
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单选题The fuel injection system is very important, so any trouble of it will （） the operation of the main engine.A
be affectedB
affectC
be effectedD
effect
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