单选题A diesel engine cylinder head can crack as a result of （）A a leaking seal ringB heat transfer from exhaust valvesC restricted cooling passagesD overheated intake valves

题目
单选题
A diesel engine cylinder head can crack as a result of （）
A

a leaking seal ring

B

heat transfer from exhaust valves

C

restricted cooling passages

D

overheated intake valves

相似考题

1.A crack in a cylinder liner can be caused byA.worn piston ringsB.installation of undersized sealing ringsC.operating the engine at low loadsD.restricted cooling water passages

2.How does combustion air enter the cylinder of a two-cycle diesel engine ? Through _______．A.Cylinder head valvesB.PortsC.Turbo chargersD.Bleeder valves

3.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

4.Which of the following conditions could contribute to the cracking of a diesel engine cylinder head?A.Leaking seal ringB.Insufficient heat transfer from the exhaust valvesC.Blocked cooling water passages to the headD.Excessive scavenging air provided to the engine

更多“A diesel engine cylinder head can crack as a result of （）”相关问题

  • 第1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2题：

    单选题
    Diesel engine exhaust gas temperatures can be used to determine individual cylinder （）.
    A

    performance

    B

    horsepower output

    C

    fuel consumption

    D

    scavenge effect


    正确答案： A
    解析： 暂无解析

  • 第3题：

    单选题
    Which of the following conditions could contribute to the cracking of a diesel engine cylinder head?（）
    A

    Leaking seal ring

    B

    Insufficient heat transfer from the exhaust valves

    C

    Block cooling water passages to the head

    D

    Excessive scavenging air provided to the engine


    正确答案： C
    解析： 暂无解析

  • 第4题：

    单选题
    Diesel engine cylinder head test cocks are used to（）
    A

    check cylinder lubrication prior to starting engine

    B

    connect exhaust gas analyzers to determine engine efficiency

    C

    pressure test cylinder heads to check for leaks

    D

    remove moisture accumulations from cylinder prior to starting


    正确答案： D
    解析： 暂无解析

  • 第5题：

    单选题
    Increasing the compression ratio of a diesel engine while maintaining the designed rate of fuel flow will result in （）
    A

    increased horsepower

    B

    reduced efficiency

    C

    increased heat loss

    D

    lower cylinder pressures


    正确答案： C
    解析： 暂无解析

  • 第6题：

    单选题
    High firing pressures and a low exhaust temperature in a diesel engine may result from （）.
    A

    decreased piston to cylinder head clearance

    B

    increased exhaust system back pressure

    C

    early fuel injection timing

    D

    low scavenge air temperature


    正确答案： B
    解析： 暂无解析

  • 第7题：

    单选题
    Broken intake valve springs on one cylinder of a diesel engine can cause the engine to （）
    A

    Over speed

    B

    fire improperly

    C

    lose oil pressure

    D

    overheatrapidly


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    Persistent knocking of one cylinder of a diesel engine ceases when the fuel supply to that cylinder is securedThis problem may be a result of （）
    A

    low loading of that cylinder

    B

    faulty combustion in that cylinder

    C

    sluggish piston ring action

    D

    excessive piston cooling


    正确答案： B
    解析： 暂无解析

  • 第9题：

    单选题
    How does combustion air enter the cylinder of a two-cycle diesel engine?（）
    A

    Cylinder head valves

    B

    Ports

    C

    Turbo chargers

    D

    Bleeder valves


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    A faulty injection in one cylinder of an operating diesel engine can be located by （）
    A

    cutting out individual injectors and noting engine performance

    B

    checking lube oil temperature

    C

    checking cam position

    D

    using a timing light


    正确答案： C
    解析： 暂无解析

  • 第11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

  • 第12题：

    单选题
    Diesel engine cylinder head test cocks are used to （）
    A

    check cylinder lubrication

    B

    connect the pressure indicator pressure

    C

    test cylinder heads

    D

    connect the exhaust gas pyrometers


    正确答案： B
    解析： 暂无解析

  • 第13题：

    单选题
    Scuffed cylinder liner wearing surfaces in a diesel engines can result from （）
    A

    starting the engine while hot

    B

    knurling the piston skirt

    C

    operating the engine overheated

    D

    scuff resistant piston rings


    正确答案： D
    解析： 暂无解析

  • 第14题：

    单选题
    One end of a diesel engine cylinder is sealed by the cylinder head and the other end by the （）
    A

    crankcase

    B

    piston

    C

    cylinder liner

    D

    crank cheek


    正确答案： B
    解析： 暂无解析

  • 第15题：

    单选题
    A diesel engine emits blue exhaust smoke as a result of（）
    A

    cold intake air

    B

    excessive compression pressure

    C

    excessive cylinder lubrication

    D

    a light load


    正确答案： B
    解析： 暂无解析

  • 第16题：

    单选题
    Scuffed cylinder liner wearing surfaces in a diesel engines can result from （）
    A

    chromium plating piston rings

    B

    knurling the piston skirt

    C

    extended maximum power operation

    D

    applying load to a cold diesel engine


    正确答案： D
    解析： 暂无解析

  • 第17题：

    单选题
    In the cylinder head of a two-stroke/cycle diesel engine, valves are used for（）
    A

    air intake

    B

    a fuel outlet

    C

    cooling water inlets

    D

    exhausting combustion gas


    正确答案： D
    解析： 暂无解析

  • 第18题：

    单选题
    Scuffed cylinder liner surfaces in a diesel engine can result form（）
    A

    starting the engine hot

    B

    knurling the piston skirt

    C

    operating an overheated engine

    D

    using scuff resistant piston rings


    正确答案： A
    解析： 暂无解析

  • 第19题：

    单选题
    If water is found in the crankcase of a diesel engine, the cause may be due to（）
    A

    a cracked cylinder head

    B

    a leaky cylinder head gasket

    C

    a cracked cylinder liner

    D

    any of the above


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    In a large, low-speed diesel engine the clearance between the piston crown and cylinder head is found to be excessiveIn order to correct for this, you should（）
    A

    build up the piston crown by metal spraying

    B

    build up the cylinder head by metal spraying

    C

    insert shims between the crankpin bearing box and the connecting rod foot

    D

    install a thinner head gasket


    正确答案： A
    解析： 暂无解析

  • 第21题：

    单选题
    One result of operating a diesel engine at light load with excessively low cooling water temperature is a/an （）
    A

    decrease in ignition lag

    B

    increase in fuel economy

    C

    reduction in lube oil viscosity

    D

    increase in cylinder misfiring


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    Engine coolant accumulating in the diesel engine lubricating oil can result from a （）
    A

    low oil pressure

    B

    high coolant pressure

    C

    leaking fuel injector

    D

    cracked cylinder head or liner


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    A diesel engine piston crown can crack from （）
    A

    excessive piston to liner clearance

    B

    excessive dirt beneath the piston crown that reduces heat transfer

    C

    faulty nozzle spray

    D

    all of the above


    正确答案： C
    解析： 暂无解析

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