单选题Low compression in a diesel engine can be caused by （）A clogged coolant passagesB a leaking cylinder head gasketC low fuel oil pressureD worn or broken cylinder liner sealing rings

题目
单选题
Low compression in a diesel engine can be caused by （）
A

clogged coolant passages

B

a leaking cylinder head gasket

C

low fuel oil pressure

D

worn or broken cylinder liner sealing rings

相似考题

1.Which of the following reasons represents why the designed compression ratio of a gasoline engine is lower than that of a diesel engine?A.compression must be low for effective spark ignitionB.compression must be low for required horsepower and torque generationC.compression must be low to prevent pre-ignitionD.compression must be low to have effective pre-ignition

2.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

3.Low compression in a diesel engine could be caused byA.worn or broken cylinder liner sealing ringsB.high cooling water temperatureC.worn or broken piston ringsD.low fuel oil pressure

4.Combustion knock occurring in a diesel engine can be caused by _____.A.low coolant temperatureB.insufficient fuelC.high ambient temperatureD.carbon buildup on the injector tips

更多“Low compression in a diesel engine can be caused by （）”相关问题

  • 第1题：

    单选题
    Worn main bearings in a diesel engine can result in （）
    A

    decreased compression pressure

    B

    increased lube oil pressure

    C

    lower lube oil temperature

    D

    excessive leakage past the piston rings


    正确答案： D
    解析： 暂无解析

  • 第2题：

    单选题
    Which of the listed problems can be a cause of low compression pressure in a diesel engine?（）
    A

    clogged air filter

    B

    compression stroke

    C

    burned exhaust valves

    D

    all of the above


    正确答案： C
    解析： 暂无解析

  • 第3题：

    单选题
    A sudden drop in diesel engine cylinder compression pressure can be caused by（）
    A

    a leaking fuel injector nozzle

    B

    a clogged air filter

    C

    excessively early fuel injection

    D

    malfunctioning valves


    正确答案： A
    解析： 暂无解析

  • 第4题：

    单选题
    In an operating diesel engine, pre-ignition can be caused by （）
    A

    excessively late fuel injection

    B

    oil in the air charge

    C

    water in the fuel

    D

    injection continuing after the fuel charge is ignited


    正确答案： C
    解析： 暂无解析

  • 第5题：

    单选题
    Low compression of diesel engine may result from （）
    A

    a worn cylinder

    B

    broken piston rings

    C

    any of A and B

    D

    none of the above


    正确答案： A
    解析： 暂无解析

  • 第6题：

    单选题
    Late fuel oil injection in a diesel engine can result in （）
    A

    fuel knock

    B

    increased power

    C

    low compression pressure

    D

    high exhaust temperature


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    A drop in compression pressure in one cylinder of a diesel engine can be caused by（）
    A

    a leaking fuel injection nozzle

    B

    a clogged air filter

    C

    early fuel injection

    D

    burned valves


    正确答案： B
    解析： 暂无解析

  • 第8题：

    单选题
    Low compression pressure in a diesel engine is caused by（）
    A

    low water in the expansion tank

    B

    improperly seated valves

    C

    low fuel oil pressure

    D

    worn or broken cylinder liner sealing rings


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    Low compression pressure in a diesel engine can be caused by（）
    A

    improperly seating intake valves

    B

    leaking cylinder liner seal rings

    C

    late fuel injection timing

    D

    carbon deposits on the piston


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    Combustion knock occurring in a diesel engine can be caused by （）
    A

    low coolant temperature

    B

    insufficient fuel

    C

    high ambient temperature

    D

    carbon buildup on the injector tips


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    A sudden drop in compression pressure in one cylinder of a diesel engine can be caused by（）
    A

    a leaking fuel injector nozzle

    B

    a clogged air filter

    C

    excessively early fuel injection

    D

    malfunctioning valves


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    High diesel engine cooling water temperatures can be caused by （）.
    A

    a worn water pump

    B

    not enough coolant

    C

    air in the cooling system

    D

    all of the above


    正确答案： C
    解析： 暂无解析

  • 第13题：

    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.
    A

    vacuum pressure

    B

    specific gravity

    C

    heat

    D

    viscosity


    正确答案： B
    解析： 暂无解析

  • 第14题：

    单选题
    White smoke exhausting from a diesel engine can be caused by a （）
    A

    high combustion temperature

    B

    high compression pressure

    C

    cracked cylinder liner

    D

    fuel with a high vanadium content


    正确答案： A
    解析： 暂无解析

  • 第15题：

    单选题
    Poor combustion in a diesel engine can be caused by （）.
    A

    high compression pressure

    B

    low intake air temperature

    C

    low exhaust pressure

    D

    high scavenge air temperature


    正确答案： D
    解析： 暂无解析

  • 第16题：

    单选题
    A dark exhaust from a running diesel engine can be caused by （）
    A

    late ignition

    B

    water in the fuel

    C

    high compression temperature

    D

    starting valve stuck open


    正确答案： A
    解析： 暂无解析

  • 第17题：

    单选题
    The loss of the diesel engine cylinder air charge through leaky valves, piston rings, worn or scored liners, would be indicated by which of the following sets of conditions?（）
    A

    Low compression pressure and high exhaust temperature

    B

    Low firing pressure and high exhaust temperature

    C

    Low compression pressure and low exhaust temperature

    D

    Low firing pressure and low exhaust temperature


    正确答案： C
    解析： 暂无解析

  • 第18题：

    单选题
    When the normal compression ratio of a diesel engine is not very high, misfiring at light loads may be caused by （）
    A

    overloading the engine

    B

    low exhaust valve lift

    C

    excessive cylinder cooling

    D

    insufficient mechanical clearance


    正确答案： A
    解析： 暂无解析

  • 第19题：

    单选题
    High diesel engine cooling water temperatures can be caused by （）.
    A

    air in the cooling system

    B

    an overhauled water pump

    C

    correct amount of coolant

    D

    no air in the cooling system


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    Low compression in a diesel engine could be caused by（）
    A

    worn or broken cylinder liner sealing rings

    B

    high cooling water temperature

    C

    worn or broken piston rings

    D

    low fuel oil pressure


    正确答案： A
    解析： 暂无解析

  • 第21题：

    单选题
    Persistent knocking in one cylinder of a diesel engine could be caused by（）.
    A

    a low load on that cylinder

    B

    sluggish piston ring action

    C

    excessive piston crown cooling

    D

    excessive clearance of piston pin


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    Which of the following reasons represents why the designed compression ratio of a gasoline engine is lower than that of a diesel engine?（）
    A

    compression must be low for effective spark ignition

    B

    compression must be low for required horsepower and torque generation

    C

    compression must be low to prevent pre-ignition

    D

    compression must be low to have effective pre-ignition


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    Diesel engine piston seizure can be caused by （）
    A

    poor cooling of cylinder walls

    B

    improper cooling of the piston

    C

    insufficient piston lubrication

    D

    all of the above


    正确答案： B
    解析： 暂无解析

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