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单选题
Late fuel oil injection in a diesel engine can result in （）
A
fuel knock
B
increased power
C
low compression pressure
D
high exhaust temperature
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更多 “单选题Late fuel oil injection in a diesel engine can result in （）A fuel knockB increased powerC low compression pressureD high exhaust temperature” 相关考题
考题
In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with ______.A.low firing pressureB.low exhaust temperatureC.mechanical knock in each cylinderD.fuel knock in each cylinder
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One cause of diesel engine surging can be a result of ______.A.injection pump plungers stuck or wornB.low compressionC.solenoid stuck openD.fuel tank too full
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单选题The consistent burning of fuel oil with a high sulfur content in a diesel engine will result in （）A
clogged fuel injection pumpsB
increased cylinder liner wearC
intake valve stem corrosionD
varnish deposit on pistons
考题
单选题Stating a large propulsion diesel engine using diesel fuel during cold weather conditions can be made easier by （）A
increasing the quantity of starting airB
increasing the lube oil pressureC
heating the engine fuel supplyD
heating the engine jacket water
考题
单选题The burning of fuel oil in a diesel engine having a high sodium content, will cause （）A
corrosion and grooving of exhaust valvesB
corrosion and gumming of the fuel injection pumpC
salt deposits in the exhaust manifoldD
slag deposits in the fuel injection equipment
考题
单选题Fuel oil contamination of an auxiliary diesel engine lube oil can result in（）A
an increased flash pointB
higher lube oil pressuresC
an increased viscosityD
lower lube oil pressures
考题
单选题Diesel engine injection lag is caused by（）A
compressibility of the fuelB
high fuel oil supply flowC
scored plunger and barrel packingD
excessive air turbulence
考题
单选题When the opening pressure of a diesel engine fuel injector is greater than that specified by the engine manufacturer, which of the following problems can be expected?（）A
Quantity of fuel injected tends to be decreasedB
Quantity of fuel injected will always be increasedC
Start of injection tends to be advancedD
Duration of injection will always greater
考题
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
考题
单选题A drop in compression pressure in one cylinder of a diesel engine can be caused by（）A
a leaking fuel injection nozzleB
a clogged air filterC
early fuel injectionD
burned valves
考题
单选题Worn diesel engine intake valve guides can result in （）A
increased engine breathing efficiencyB
excessive valve lashC
excessive lube oil consumptionD
lower than normal fuel consumption
考题
单选题In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with（）A
low firing pressureB
low exhaust temperatureC
mechanical knock in each cylinderD
fuel knock in each cylinder
考题
单选题Dirt in the fuel oil system of a diesel engine can cause （）.A
clogged filtersB
poor combustionC
overloading of the dieselD
shock of fuel lines
考题
单选题If a diesel engine turned over at normal cranking speed but failed to start, the cause could be late fuel injection or （）A
excessive fuel pressureB
high lube oil viscosityC
inadequate fuel injectionD
excessive starting air pressure
考题
单选题Permitting a diesel engine fuel oil day tank to run dry can cause （）A
overheated injection pumpsB
water condensation in the cylindersC
fuel dilution of the lube oilD
air in the fuel system
考题
单选题Significant retardation of a diesel engine fuel injection timing will result in （）A
smoother engine operationB
advanced fuel ignitionC
increased fuel economyD
reduced engine power
考题
单选题Faulty operation of diesel engine fuel injection nozzles can be a direct cause of（）.A
excessive fuel nozzle holder coolingB
sediment in the fuel supplyC
distortion of the fuel spray patternD
improper atomization of the fuel
考题
单选题Engine coolant accumulating in the diesel engine lubricating oil can result from a （）A
low oil pressureB
high coolant pressureC
leaking fuel injectorD
cracked cylinder head or liner
考题
单选题Faulty operation of diesel engine fuel injection nozzles can be directly caused by （）.A
water in the fuel oil supplyB
excessive fuel nozzle holder coolingC
a distorted fuel spray patternD
leakage past the plunger into the oil drain
考题
单选题Diesel engine lube oil can become contaminated as a result（）A
the water produced during combustionB
the sulfur in the fuelC
unburned fuel oilD
all of the above
考题
单选题Late fuel injection in a diesel engine is indicated by low firing pressure with （）A
low exhaust temperatureB
low exhaust pressureC
mechanical knock in each cylinderD
black or gray exhaust smoke
考题
单选题If you suspect a diesel engine is misfiring due to air leakage into the fuel system, you should begin looking for the leak at the （）A
fuel line connections to cylinder injection valvesB
gasket surfaces of the fuel oil filtersC
discharge fitting of the fuel injector pumpsD
suction side of the fuel oil tran
考题
单选题Fuel oil begins injection into the cylinder of a four-stroke/cycle diesel engine during the （）.A
intake strokeB
exhaust strokeC
power strokeD
compression stroke
考题
单选题One of function of diesel engine lubricating oil is to （）A
induce carbon formation on cylinder wallsB
improve fuel penetration in the combustion spaceC
form a friction reducing film between mating surfacesD
lubricate the fuel injection
考题
单选题Clogged diesel engine fuel oil filters can cause（）A
loss of powerB
misfiringC
low fuel oil pressureD
All of the above
考题
单选题The minimum fuel oil delivery pressure required for diesel engine injection depends primarily on the（）A
degree of cylinder air turbulenceB
firing pressure in the engineC
quality of fuel to be injectedD
duration of the ignition delay period
考题
单选题Misfiring in a diesel engine at light loads can be caused by（）A
high lube oil temperatureB
low lube oil temperatureC
excessive cylinder coolingD
high air injection pressure
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