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
In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with ______.
A.low firing pressure
B.low exhaust temperature
C.mechanical knock in each cylinder
D.fuel knock in each cylinder
相关考题：
A diesel engine experiences a sudden loss in speed, accompanied by black exhaust smoke, with the fuel rack at maximum, and speed remaining below normal .the probable ___.A.engine overloadB.leaky valvesC.stuck or broken piston ringsD.low air injection pressure
High firing pressures and low exhaust temperature in a diesel engine may resultfrom( ).A.decreased piston to cylinder head clearanceB.increased exhaust system back pressureC.early fuel injection timingD.low scavenge air temperature
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
One of the factors limiting the amount of toad which can be put on a modem marine diesel engine is the_______.A.governor sensitivityB.exhaust temperatureC.fuel injection pressureD.speed of the cam shaft
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
Engine operating conditions may be indicated by the color of the exhaust smoke Black smoke could indicate .A.an insufficient speed droop settingB.an overloaded engineC.clogged drain holes in the oil control ringsD.complete combustion
Sudden unloading of a diesel engine can cause ______．A.Decreased fuel efficiencyB.Increased exhaust temperatureC.Black smokeD.Overspeed trip
What would white exhaust smoke from a diesel engine probably mean ________．A.Late fuel injectionB.Excess combustion airC.Dribbling injector tipsD.Excessive lube oil consumption
单选题Black smoke exhausting from a diesel engine indicates（）Aproper fuel injectionBwater in the fuelCincomplete combustionDburning of lube oil
单选题A diesel engine experiences a sudden loss in speed, accompanied by black exhaust smoke, with the fuel rack at maximum, and speed remaining below normal the probable（）Aengine overloadBleaky valvesCstuck or broken piston ringsDlow air injection pressure
单选题The burning of fuel oil in a diesel engine having a high sodium content, will cause （）Acorrosion and grooving of exhaust valvesBcorrosion and gumming of the fuel injection pumpCsalt deposits in the exhaust manifoldDslag deposits in the fuel injection equipment
单选题Late fuel injection timing is indicated by （）Alower than normal cylinder pressure and low exhaust temperatureBlower than normal cylinder pressure and high exhaust temperatureChigher than normal cylinder pressure and low exhaust temperatureDhigher than normal cylinder pressure and high exhaust temperature
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Engine operating conditions may be indicated by the color of the exhaust smoke.Black smoke could indicate（）Aan insufficient speed droop settingBan overloaded engineCclogged drain holes in the oil control ringsDcomplete combustion
单选题Black smoke exhausting from an operating diesel engine can be caused by （）Afuel dribbling from leaking fuel injectorsBburning fuel with a high carbon contentCburning fuel with a high vanadium contentDburning fuel with a lower sulphur content
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Late fuel oil injection in a diesel engine can result in （）Afuel knockBincreased powerClow compression pressureDhigh exhaust temperature
单选题A smoking exhaust from an operating diesel engine could be caused by （）Alow sulfur content in the fuelBa loose injector inlet connectionClate fuel injectionDhigh injection pressure
单选题High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by （）.Aengine overloadBlow combustion temperatureCplugged fuel nozzle holesDexcessive compression pressure
单选题High firing pressures and a low exhaust temperature in a diesel engine may result from （）.Adecreased piston to cylinder head clearanceBincreased exhaust system back pressureCearly fuel injection timingDlow scavenge air temperature
单选题In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with（）Alow firing pressureBlow exhaust temperatureCmechanical knock in each cylinderDfuel knock in each cylinder
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 （）Aexcessive fuel pressureBhigh lube oil viscosityCinadequate fuel injectionDexcessive starting air pressure
单选题If a diesel engine is smoking excessively under load, the cause could be （）Alow exhaust back pressureBearly fuel injection in one of the cylindersCcompression pressure in one of the cylindersDplugged injector holes
单选题Late fuel injection in a diesel engine is indicated by low firing pressure with（）Ahigh exhaust temperatureBlow exhaust temperatureCfuel knock in each cylinderDmechanical knock in each cylinder
单选题If the firing pressures in a diesel engine are high, although the exhaust temperatures are normal, the cause may be（）Aearly injection timingBworn orifices in the injection nozzlesCworn or scored cylinder linersDusing a fuel with too low of a cetane number
单选题Late fuel injection occurring at, or after TDC in a diesel engine is indicated by excessive exhaust smoke and （）Alow exhaust temperatureBlow firing pressureCfuel knock in each cylinderDmechanical knock in each cylinder
单选题Late fuel injection in a diesel engine is indicated by low firing pressure with （）Alow exhaust temperatureBlow exhaust pressureCmechanical knock in each cylinderDblack or gray exhaust smoke