单选题When the load is increased on a turbocharged diesel engine, the amount of increased air supplied by the turbocharger will()Alag behind the increased fuel supplied to the engineBenter the engine along with the increase in the fuelCenter the engine before the increased fuel supplyDleave the turbocharger as a negative pulse

单选题
When the load is increased on a turbocharged diesel engine, the amount of increased air supplied by the turbocharger will()
A

lag behind the increased fuel supplied to the engine

B

enter the engine along with the increase in the fuel

C

enter the engine before the increased fuel supply

D

leave the turbocharger as a negative pulse


参考解析

解析: 暂无解析

相关考题:

A sudden power loss from a turbocharged and after-cooled diesel engine is an indication of a/anA.turbocharger malfunction or failureB.crankcase exhauster overloadC.overload on the intercoolerD.obstruction in the engine cylinders

In a main propulsion turbocharged diesel engine, the speed of the turbocharger varies according to the _____.A.governor droopB.speeder spring tensionC.fuel rack lagD.load on the engine

The relative air pressure in the inlet manifold of a turbocharged diesel engine is usually______.A.greater than the average exhaust manifold pressureB.less than the average exhaust manifold pressureC.greater at the turbine wheel than at the impellerD.greater at reduced engine speed

单选题Load control on a diesel engine is accomplished by ().Aregulating the speed of the turbochargerBrotating the fuel injector pump plungerCregulating the speed of the fuel oil transfer pumpDchanging engine timing

单选题A supercharged diesel engine when compared to a similar naturally aspirated diesel engine, will develop an increase in ()Aignition lagBengine horsepowerClube oil system pressureDspecific fuel consumption

单选题The purpose of the compensating adjustment used in a diesel engine hydraulic governor is to ()Acompensate for low oil levelBincrease governor promptnessCprevent governor huntingDlimit engine load

单选题A diesel engine is supercharged in order to()Alower the no-load RPMsBprovide more air for combine with the fuelCincrease the no-load RPMsDprovide more fuel combine with the air

单选题The exhaust system for a turbocharged diesel engine functions to ()Apower the after-coolersBpower the turbochargerCreduce the cylinder scavenge effectDcool the turbocharger

单选题When a diesel engine is operate at partial load, as compared to full load ,a decrease will occur in the average ()Aair quantity aspiratedBfuel injection pressureCcombustion pressure on the power strokeDcompression on the compression stroke

单选题The exhaust system for a turbocharged two-stroke/cycle diesel engine functions to()Adischarge exhaust gases and smokeBfurnish energy to the turbochargerCreduce engine room noiseDall of the above

单选题High exhaust temperatures from all of cylinder of a turbocharged, four-stroke/cycle diesel engine can be caused by an()Ainoperative turbochargerBinadequate fuel supplyCoverload on one cylinderDunequal load distribution

单选题The relative air pressure in the inlet manifold of a turbocharged diesel engine is usually()Agreater than the average exhaust manifold pressureBless than the average exhaust manifold pressureCgreater at the turbine wheel than at the impellerDgreater at reduced engine speed

单选题The load limitation of governor should be reduced when ship navigating at sea, the main reason is to()Aprevent the diesel engine surgingBprevent governor from being damaged because of swingCreduce the probability of the crank shaft being torsional vibrated and resonatedDprevent the main engine being overload or overspeed

单选题A turbocharged diesel engine will have an intake manifold pressure()Aconstantly decreasing as engine load increaseBconstantly increasing as the amount of supercharging increasesCapproximately equal to exhaust manifold pressure at all timesDapproximately equal to atmospheric pressure at all times

单选题Why will a turbocharger diesel engine produce black smoke if excessive additional load is applied too quickly?()AExhaust energy would draw excess airBThe inertia of the turbocharger rotor causes a time lag which delays the turbocharger speed increaseCExhaust gas pumping losses are increased due to turbine windageDExhaust gas back pressure falls slightly due to increased nozzle action

单选题In a modern internal combustion diesel engine, the load carrying part of the engine is referred to as the()Abedplate or baseBsump or oil panCcylinder blockDframe

单选题Maximum horsepower of a diesel engine is attained ().Awhen the engine RPM is pulled down by overloadBat rated engine RPMCat 95 % of rated engine RPMDat 95 % of a properly adjusted governor RPM with the engine under full load

单选题Which condition indicates the air side fouling of an after-cooler on a turbocharged diesel engine?()AAn increased air temperature differential between the cooler inlet and outletBA decrease in the air pressure differential across the coolerCExcessive condensate forming in the air boxDA decrease in the air temperature differential between the cooler inlet and outlet

单选题An increase in the load on a turbocharged diesel engine operating at constant speed will result in an increase in ()AexhaustBair box pressureCbrake main effective pressureDall of the above

单选题A sudden power loss from a turbocharged and after-cooled diesel engine is an indication of a/an()Aturbocharger malfunction or failureBcrankcase exhauster overloadCoverload on the intercoolerDobstruction in the engine cylinders

单选题Poor quality fuel being used in a turbocharged medium-speed, diesel engine could result in ()Ahard startingBexcessive fuel consumptionCloss of powerDall of the above

单选题An operating turbocharged diesel engine that suddenly loses power, is due to a/an()Arestricted turbocharger air intakeBoil leak into the turbochargerCdribbling injectorDlow fuel viscosity

单选题If the speed of a turbocharged diesel engine is maintained constant the turbocharger speed will ()Adecrease until the engine speed increasesBincrease as the load increasesCdecrease as the loadDincreases remain unchanged

单选题In a main propulsion turbocharged diesel engine, the speed of the turbocharger varies according to the ()Agovernor droopBspeeder spring tensionCfuel rack lagDload on the engine

单选题A turbocharged, four-stroke/cycle diesel engine has a larger valve overlap than a naturally aspirated four-stroke/cycle diesel engine, in order to in crease the ().Atemperature of the exhaust gasesBenergy supplied to the turbochargerCair pressure to the intake manifoldDpurge of exhausted gases from the cylinders

单选题Scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished()Aduring the valve overlap periodBwith only the exhaust valve openCat a pressure below atmosphericDwithout cooling the cylinders or pistons

单选题A four-stroke cycle, turbocharged, 1000 horsepower diesel engine has been operating under loadThe load suddenly increases, causing excessive black exhaust smoke, and a rapid rise in the lube oil temperatureIn response to this condition, you should:()Areduce loadBcheck your exhaustCadjust cooling water temperatureDincrease lube oil flow