单选题Intake air flow from a diesel engine turbocharger is directly proportional to engine（）Aexhaust gas pressureBexhaust gas temperatureCspeedDload
单选题
Intake air flow from a diesel engine turbocharger is directly proportional to engine（）
A
exhaust gas pressure
B
exhaust gas temperature
C
speed
D
load
参考解析
解析：
暂无解析
相关考题：
What is the function of the after-coolers installed in the diesel engine air intake system?A.Decrease the air densityB.Increase the exhaust temperatureC.Decrease the lube oil temperatureD.Increase the air density
Exhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine byA.natural aspirationB.masked intake valvesC.air ceilsD.scavenging air
Which of the following problems should be taken when cleaning the air filter on a diesel engine equipped with a turbocharger? .A.Reduce engine speed to idle before removing the filterB.Soak the dirty filter in kerosene onlyC.Blow out the air inlet with compressed airD.Cover the air inlet after removing the filter
During the valve overlap period, the exhaust pressure of a turbocharged four-stroke/cycle diesel engine must be less than the intake manifold pressure to ensure ______.A.effective cylinder scavenging and coolingB.constant pressure from the turbochargersC.cooler operation of the exhaust systemD.effective constant pressure for turbocharger operation
单选题Exhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine by（）Anatural aspirationBmasked intake valvesCair cellsDscavenging air
单选题The function of the after-cooler installed between the turbocharger and intake manifold on some diesel engine, is to （）Aincrease the density of the intake airBdecrease turbocharger power usageCreduce exhaust gas temperatureDcompensate for turbocharger PRM fluctuations
单选题Black smoke exhausting from an operating diesel engine is an indication of poor combustion which may be caused by （）Awater in the fuelBinsufficient fuel for combustionCclogged air intake passagesDburning lubricating oil
单选题White smoke issuing from the exhaust of an auxiliary diesel engine valve opening （）Athe engine is overloadedBthe engine is coldCthere is too much lube oil in the cylindersDthe turbocharger is fouled
单选题What is the best way of stopping an over-speeding diesel engine?（）ADisconnect the battery cables from the starting motorBDrain the hydraulic fluid from the governor sumpCBlock the flow of cooling air to the radiatorDSecure the fuel supply and block the air intake
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Diesel engine starting difficulties due to cold intake air temperatures, can be overcome by using a/an（）Aincrease in starting air pressureBincrease in lube oil viscosityCcompression expansion deviceDjacket water heater
单选题During the valve overlap period, the exhaust pressure of a turbochargers, four-stroke/cycle diesel engine must be less than the intake manifold pressure to ensure （）Aeffective cylinder scavenging and coolingBconstant pressure from the turbochargersCcooler operation of the exhaust systemDeffective constant pressure for turbocharger operation
单选题Cooling the intake air supplied to a diesel engine will （）.Areduce mean effective pressureBdecrease average compression pressureCdecrease air charge densityDincrease power output
单选题What is the effect of heated intake air on a diesel engine? （）AIncreases efficiencyBIncreases engine horsepowerCIncreases engine lifeDReduces engine horsepower
单选题Which of the following problems can cause an above normal air temperature to develop in the intake manifold of a turbocharged and after-cooled diesel engine?（）AFaulty turbocharger turbine diffuser ringBFaulty turbocharger compressor ringCInsufficient cooling water flowDClogged air intake filters
单选题A two-stroke/cycle diesel engine requires less starting air than a four-stroke/cycle diesel engine, of equal displacement, because the two-stroke/cycle diesel engine（）Ahas little or no internal frictionBhas a lower effective compression ratioCoperates with scavenge air under a positive pressureDoperates without energy absorbing intake and exhaust strokes
单选题Which of the following problems should be taken when cleaning the air filter on a diesel engine equipped with a turbocharger?（）AReduce engine speed to idle before removing the filterBSoak the dirty filter in kerosene onlyCBlow out the air inlet with compressed airDCover the air inlet after removing the filter
单选题The speed of the turbocharger for a four-stroke/cycle diesel engine driving a generator at constant speed depends on the （）Aengine speedBkilowatt loadCfuel injection pressureDair intake manifold temperature
单选题Which of the following conditions can cause above normal air temperature to develop in the intake manifold of a four-stroke/cycle turbo-charged diesel engine?（）AClogged air intake faltersBPiston blow-byCA defective after-coolerDFaulty exhaust valves
单选题Which of the following conditions can cause below normal air pressure in the intake manifold of a turbocharged diesel engine?（）AExcessive piston blow-by to the manifoldBInsufficient cooling water flowCAccumulated water in the air boxesDClogged air intake filters
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The process of scavenging a two-stroke/cycle diesel engine serves to（）Aimprove fuel flow volumeBcool the exhaust valvesCreduce the intake air charge densityDincrease the temperature of exhaust gases
单选题A restricted air intake to a diesel engine may result in the engine （）.Afailing to reach rated speedBknocking under maximum loadChunting or surging under light loadDoverspeeding and running away
单选题In a naturally aspirated diesel engine, the volume of air intake is directly related to engine （）.Acompression ratioBvalve sizeCfuel pressureDcylinder clearance volume
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If you observe smoke coming from the turbocharger of an auxiliary diesel engine, you should（）Acheck the air filter for obstructionBcheck for an exhaust leakCcheck the exhaust temperatureDsecure the engine
单选题Which of the factors listed has the greatest effect on the mechanical efficiency of a diesel engine?（）Atemperature of the intake airBfriction within the engineCmechanical condition of the superchargerDmechanical condition of the turbocharger