Fuel is admitted to a diesel engine cylinder through the ______.A.injector nozzlesB.carburetorC.exhaust portsD.intake valves
Fuel is admitted to a diesel engine cylinder through the ______.
A.injector nozzles
B.carburetor
C.exhaust ports
D.intake valves
相关考题：
If the diesel engine fuel injection timing is changed to delay the start of injection until the pistons are at top dead center, the engine will_________.A.backfire through the air intakesB.develop less power under loadC.have high firing pressuresD.lift its cylinder relief valves
When fuel is injected late into a diesel engine cylinder_______.A.the exhaust will be clearB.fuel consumption will be lowC.all the fuel will be burned at top dead centerD.fuel consumption will be high
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Which of the listed problems would be indicated by an accumulation of water in one cylinder, in addition to the crankcase of an idle diesel engine?（）AExcessive cylinder linerBwater in the fuel systemCCracked cylinder linerDLeaking lube oil cooler
单选题Fuel oil discharged to the diesel engine cylinder is atomized at the （）AturbochargerBinjection nozzle tipCcarburetorDfuel oil pump
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A practical way of checking for excessive fuel injection in one cylinder of an operating diesel engine is to （）Afeel the high pressure fuel lineBcheck the cylinder exhausts for white smoke frequentlyCcheck the cylinder exhaust temperatureDisolate each cylinder and inspect the injector
单选题When fuel is injected late into a diesel engine cylinder,（）.Athe exhaust will be clearBfuel consumption will be lowCall the fuel will be burned at top dead centerDfuel consumption will be high
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Burning fuel with a high sulfur content in a diesel engine will （）Aincrease thermal efficiencyBcause clogging of the fuel systemCincrease the ability of the engine to start in cold weatherDproduce corrosion in the cylinder and exhaust system at low loads
单选题Trunk type diesel engine pistons are effectively cooled when heat is（）Aradiated through the engine blockBtransferred to water cooled cylinder wallsCconducted through the piston crownDtransferred to escaping exhaust gases
单选题Fuel is ignited in a diesel engine cylinder by （）Aa spark plugBinjectorsCthe heat of compressionDincreasing jacket water temperatures
单选题If the diesel engine fuel injection timing is changed to delay the start of injection until the pistons are at top dead center, the engine will（）Abackfire through the air intakesBdevelop less power under loadChave high firing pressuresDlift its cylinder relief valves
单选题A change in the quality of fuel atomization by a diesel engine fuel injector would be caused by a/an （）Aincrease in engine speedBincrease in cylinder turbulenceCleaking needle valveDreduction in cylinder turbulence
单选题The longer the ignition delay period occurs in a diesel engine, the （）.Aless fuel will enter the cylinderBlower will be cylinder compression temperaturesCmore complete will be fuel combustionDmore rapid will be the rise in combustion pressure
单选题One remedy for a high firing pressure, in addition to a high exhaust temperature in one cylinder of a diesel engine, is to （）Aincrease scavenge air pressureBreduce fuel booster pump pressureCadjust the fuel rackDretard fuel injector timing
单选题Fuel is admitted to a diesel engine cylinder through the （）.Aintake valvesBcarburetorCexhaust portsDinjector nozzles
单选题Trunk-type diesel engine pistons are most effectively cooled by heat（）Aconducted through the engine blockBconducted to water cooled cylinder wallsCconducted through the piston crownDloss to escaping exhaust gases
单选题Engine coolant accumulating in the diesel engine lubricating oil can result from a （）Alow oil pressureBhigh coolant pressureCleaking fuel injectorDcracked cylinder head or liner
单选题What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）ASpark plugBHeat of compressionCCarburetorDGlow plug
单选题In the cylinder of a diesel engine fuel is ignited by the（）Aspark from a plug in the pre-combustion chamberBelectrical discharge from the distributorCheat of compression within the cylinderDheat from the fuel injection nozzle
单选题Heat for igniting the fuel oil in the cylinder of a diesel engine is generated by the （）Aelectronic ignition systemBcompression of air by the pistonCfriction in the fuel injectorDfuel oil bearing system
单选题Fuel droplets injected into a diesel engine cylinder must have adequate penetration to （）Aprolong the ignition delay periodBensure the beginning of fuel injectionCthoroughly utilize the air chargeDallow controlled fuel combustion
单选题Fuel oil injected into the cylinder of a diesel engine just after the piston passes top dead center, will（）Aincrease engine powerBincrease engine loadCdecrease engine powerDimprove fuel economy
单选题Proper dispersion of fuel in a diesel engine cylinder is dependent upon the （）Ainjection pressureBshape of combustion spaceCturbulence in combustion spaceDall of the above
单选题Turbulence in a diesel engine cylinder is of major importance in providing （）.Aproper fuel meteringBcomplete fuel/air mixingCminimal fuel penetrationDproper fuel timing
单选题The breaking-up of fuel as it enters a diesel engine cylinder is known as（）AairificationBvaporizationCatomizationDgasification