Sudden unloading of a diesel engine can cause ______．A.Decreased fuel efficiencyB.Increased exhaust temperatureC.Black smokeD.Overspeed trip
Sudden unloading of a diesel engine can cause ______．
A.Decreased fuel efficiency
B.Increased exhaust temperature
C.Black smoke
D.Overspeed trip
相关考题：
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
_______can be a direct cause of faulty operation of diesel engine fuel injection nozzles.A.Excessive fuel nozzle holder coolingB.Sediment in the fuel supplyC.Distortion of the fuel spray patternD.Improper atomization of the fuel
Prolonged operation of a diesel engine with a closed cooling water system, at lower than normal designed operating temperatures can ______.A.increase power outputB.decrease lube oil viscosityC.eliminate fuel knockD.cause sulfuric acid formation
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
单选题If a diesel engine turned over freely but failed to start, the cause could be （）Awater in the fuelBcold lube oilCexcessive starting air pressureDexcessive fuel pressure
单选题Dirt in a fuel oil system of a diesel engine can cause （）Adamage to strainersBover-speeding of the engineCexcessive cooling of the engineDinjector damage
单选题Stating a large propulsion diesel engine using diesel fuel during cold weather conditions can be made easier by （）Aincreasing the quantity of starting airBincreasing the lube oil pressureCheating the engine fuel supplyDheating the engine jacket water
单选题If a diesel engine driving a generator turns over freely but fails to fire properly, the cause could be （）Aexcessive compression pressureBair in the fuel linesChigh fuel pressureDexcessive load
单选题A leaking diesel engine fuel injector will cause（）Aprolonged maintenance intervalsBimproved atomizationCgreater fuel economyDincomplete combustion
单选题Leaking oil seals on a diesel engine turbocharger can cause（）Athe engine to run after the fuel has been securedBthe engine to over-speedCa fireDall of the above
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If the relief valve on a diesel engine cylinder lifts, the cause could be due to （）Aliquid in the cylinderBlow compression in the cylinderChigh exhaust temperatureDpoor fuel penetration
单选题Due to excessive water in the fuel, a diesel engine fails to startBefore the engine can be started, the water must be removed from the （）.Afuel pumpsBcylindersCfuel strainersDall of above
单选题Air in the fuel lines of a diesel engine can cause （）Aignition failureBoxygen corrosion of the fuel linesCthe pistons to seizeDblue smoke
单选题A sudden decrease in the diesel engine lube oil viscosity could be an indication of（）Aloss of additives from the lube oilBcarbon deposits in the lube oilCexcessive centrifugingDexcessive fuel dilution
单选题Which of the following conditions could be a cause of excessive fuel dilution of diesel engine lube oil?（）ALeaking fuel injectorsBLower than normal compressionCDelayed fuel injectionDAll of the above are correct
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Broken intake valve springs on one cylinder of a diesel engine can cause the engine to （）AOver speedBfire improperlyClose oil pressureDoverheatrapidly
单选题Permitting a diesel engine fuel oil day tank to run dry can cause （）Aoverheated injection pumpsBwater condensation in the cylindersCfuel dilution of the lube oilDair in the fuel system
单选题A distorted spray pattern from a fuel injector can cause a diesel engine to have （）Ahigher firing pressureBmore power outputClower fuel pressureDless power output
单选题Faulty operation of diesel engine fuel injection nozzles can be a direct cause of（）.Aexcessive fuel nozzle holder coolingBsediment in the fuel supplyCdistortion of the fuel spray patternDimproper atomization of the fuel
单选题The fuel oil system for a diesel engine can be considered in two parts--the fuel supply and the （） systems.Afuel treatmentBfuel combustionCfuel injectionDfuel separating
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Clogged diesel engine fuel oil filters can cause（）Aloss of powerBmisfiringClow fuel oil pressureDAll of the above
单选题Sudden unloading of a diesel engine can cause（）.Adecreased fuel efficiencyBincreased exhaust temperatureCblack smokeDoverspeed trip
单选题Air in the fuel lines to the fuel injection nozzles of a diesel engine will cause the engine to （）Aburn excessive amounts of lube oilBoverheat without smokingCoperate with reduce power or stopDrun away without load
单选题After changing out the fuel filters the diesel engine fails to restart, the most probable cause for this condition is a/an（）.Alow compressionBair-bound fuel systemCimproper sparkDchange in viscosity