单选题Low compression in a diesel engine can be caused by （）Aclogged coolant passagesBa leaking cylinder head gasketClow fuel oil pressureDworn or broken cylinder liner sealing rings
单选题
Low compression in a diesel engine can be caused by （）
A
clogged coolant passages
B
a leaking cylinder head gasket
C
low fuel oil pressure
D
worn or broken cylinder liner sealing rings
参考解析
解析：
暂无解析
相关考题：
Which of the following reasons represents why the designed compression ratio of a gasoline engine is lower than that of a diesel engine?A.compression must be low for effective spark ignitionB.compression must be low for required horsepower and torque generationC.compression must be low to prevent pre-ignitionD.compression must be low to have effective pre-ignition
Combustion knock occurring in a diesel engine can be caused by _____.A.low coolant temperatureB.insufficient fuelC.high ambient temperatureD.carbon buildup on the injector tips
A smoking exhaust from an operating diesel engine could be caused by( ).A.low sulfur content in the fuelB.a loose injector inlet connectionC.late fuel injectionD.high injection pressure
Low compression in a diesel engine could be caused byA.worn or broken cylinder liner sealing ringsB.high cooling water temperatureC.worn or broken piston ringsD.low fuel oil pressure
单选题Worn main bearings in a diesel engine can result in （）Adecreased compression pressureBincreased lube oil pressureClower lube oil temperatureDexcessive leakage past the piston rings
单选题The ignition of the fuel in diesel engine is caused by the （） of compression of the air previously admitted into the cylinders.Avacuum pressureBspecific gravityCheatDviscosity
单选题Which of the listed problems can be a cause of low compression pressure in a diesel engine?（）Aclogged air filterBcompression strokeCburned exhaust valvesDall of the above
单选题White smoke exhausting from a diesel engine can be caused by a （）Ahigh combustion temperatureBhigh compression pressureCcracked cylinder linerDfuel with a high vanadium content
单选题A sudden drop in diesel engine cylinder compression pressure can be caused by（）Aa leaking fuel injector nozzleBa clogged air filterCexcessively early fuel injectionDmalfunctioning valves
单选题Poor combustion in a diesel engine can be caused by （）.Ahigh compression pressureBlow intake air temperatureClow exhaust pressureDhigh scavenge air temperature
单选题In an operating diesel engine, pre-ignition can be caused by （）Aexcessively late fuel injectionBoil in the air chargeCwater in the fuelDinjection continuing after the fuel charge is ignited
单选题A dark exhaust from a running diesel engine can be caused by （）Alate ignitionBwater in the fuelChigh compression temperatureDstarting valve stuck open
单选题Low compression of diesel engine may result from （）Aa worn cylinderBbroken piston ringsCany of A and BDnone of the above
单选题The loss of the diesel engine cylinder air charge through leaky valves, piston rings, worn or scored liners, would be indicated by which of the following sets of conditions?（）ALow compression pressure and high exhaust temperatureBLow firing pressure and high exhaust temperatureCLow compression pressure and low exhaust temperatureDLow firing pressure and low exhaust temperature
单选题Late fuel oil injection in a diesel engine can result in （）Afuel knockBincreased powerClow compression pressureDhigh exhaust temperature
单选题When the normal compression ratio of a diesel engine is not very high, misfiring at light loads may be caused by （）Aoverloading the engineBlow exhaust valve liftCexcessive cylinder coolingDinsufficient mechanical clearance
单选题A drop in compression pressure in one cylinder of a diesel engine can be caused by（）Aa leaking fuel injection nozzleBa clogged air filterCearly fuel injectionDburned valves
单选题High diesel engine cooling water temperatures can be caused by （）.Aair in the cooling systemBan overhauled water pumpCcorrect amount of coolantDno air in the cooling system
单选题Low compression pressure in a diesel engine is caused by（）Alow water in the expansion tankBimproperly seated valvesClow fuel oil pressureDworn or broken cylinder liner sealing rings
单选题Low compression in a diesel engine could be caused by（）Aworn or broken cylinder liner sealing ringsBhigh cooling water temperatureCworn or broken piston ringsDlow fuel oil pressure
单选题Low compression pressure in a diesel engine can be caused by（）Aimproperly seating intake valvesBleaking cylinder liner seal ringsClate fuel injection timingDcarbon deposits on the piston
单选题Persistent knocking in one cylinder of a diesel engine could be caused by（）.Aa low load on that cylinderBsluggish piston ring actionCexcessive piston crown coolingDexcessive clearance of piston pin
单选题Combustion knock occurring in a diesel engine can be caused by （）Alow coolant temperatureBinsufficient fuelChigh ambient temperatureDcarbon buildup on the injector tips
单选题Which of the following reasons represents why the designed compression ratio of a gasoline engine is lower than that of a diesel engine?（）Acompression must be low for effective spark ignitionBcompression must be low for required horsepower and torque generationCcompression must be low to prevent pre-ignitionDcompression must be low to have effective pre-ignition
单选题A sudden drop in compression pressure in one cylinder of a diesel engine can be caused by（）Aa leaking fuel injector nozzleBa clogged air filterCexcessively early fuel injectionDmalfunctioning valves
单选题Diesel engine piston seizure can be caused by （）Apoor cooling of cylinder wallsBimproper cooling of the pistonCinsufficient piston lubricationDall of the above
单选题High diesel engine cooling water temperatures can be caused by （）.Aa worn water pumpBnot enough coolantCair in the cooling systemDall of the above