Persistent knocking in one cylinder of an eight cylinder diesel engine would MOST likely be caused by______.A.using fuel oil with low cetane numberB.a badly worn piston pinC.a loose flywheel keyD.a loose bed plate bolt

题目

Persistent knocking in one cylinder of an eight cylinder diesel engine would MOST likely be caused by______.

A.using fuel oil with low cetane number

B.a badly worn piston pin

C.a loose flywheel key

D.a loose bed plate bolt

相似考题

1.One cylinder of a diesel engine is persistently knocking and does not cease(停止) when the fuel supply to that cylinder is secured.Which of the following problems may be the cause?A.Low loading of the cylinderB.Excessive cooling of that pistonC.Sluggish ring action on the pistonD.A mechanical defect in a working part

2.单选题Air scavenging of a diesel engine cylinder（）A blows out the exhaust gasesB supplies oxygen for combustionC cools the valves and cylinder wallsD all of the above

3.单选题One end of a diesel engine cylinder is sealed by the cylinder head and the other end by the （）A crankcaseB pistonC cylinder linerD crank cheek

4.单选题Which of the listed problems would be indicated by an accumulation of water in one cylinder, in addition to the crankcase of an idle diesel engine?（）A Excessive cylinder linerB water in the fuel systemC Cracked cylinder linerD Leaking lube oil cooler

参考答案和解析
正确答案：B
更多“Persistent knocking in one cylinder of an eight cylinder diesel engine would MOST likely b ”相关问题

  • 第1题：

    单选题
    A practical way of checking for excessive fuel injection in one cylinder of an operating diesel engine is to （）
    A

    feel the high pressure fuel line

    B

    check the cylinder exhausts for white smoke frequently

    C

    check the cylinder exhaust temperature

    D

    isolate each cylinder and inspect the injector


    正确答案： A
    解析： 暂无解析

  • 第2题：

    单选题
    Which of the listed diesel engine systems is likely to create the problem of a cylinder regularly misfiring?（）
    A

    Lubrication

    B

    Cooling

    C

    Fuel

    D

    Electric ignition


    正确答案： A
    解析： 暂无解析

  • 第3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4题：

    单选题
    One end of a cylinder for a medium or high-speed diesel engine is sealed by the piston and rings, the other end is sealed by the （）
    A

    crankcase

    B

    cylinder head

    C

    valve cover

    D

    engine frame


    正确答案： D
    解析： 暂无解析

  • 第5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6题：

    单选题
    A change in the quality of fuel atomization by a diesel engine fuel injector would be caused by a/an （）
    A

    increase in engine speed

    B

    increase in cylinder turbulence

    C

    leaking needle valve

    D

    reduction in cylinder turbulence


    正确答案： C
    解析： 暂无解析

  • 第7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8题：

    单选题
    A diesel engine is warmed up and white vapor is in the exhaust，this could indicate （）
    A

    excessive cylinder lubrication

    B

    a lugging engine

    C

    a leaking cylinder liner

    D

    overloading of one cylinder


    正确答案： B
    解析： 暂无解析

  • 第9题：

    单选题
    One remedy for a high firing pressure, in addition to a high exhaust temperature in one cylinder of a diesel engine, is to （）
    A

    increase scavenge air pressure

    B

    reduce fuel booster pump pressure

    C

    adjust the fuel rack

    D

    retard fuel injector timing


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    （）uses one or two high pressure pumps for all the cylinders with one more standby, while（）have a separate high-pressure pump for each cylinder.
    A

    A common rail engine；conventional engines

    B

    A conventional engine；common rail engines

    C

    A marine diesel engine；most other engines

    D

    A two-stroke engine；four-stroke engines


    正确答案： B
    解析： 暂无解析

  • 第11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12题：

    单选题
    What is the crank angle between any two crank throws in the firing order of a four-stroke/cycle, in line, eight cylinder diesel engine?（）
    A

    45

    B

    60

    C

    90

    D

    100


    正确答案： C
    解析： 暂无解析

  • 第13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14题：

    单选题
    Which of the following procedures should be carried out when a large, low-speed, diesel engine is operated with one cylinder secured?（）
    A

    Lubrication to the defective cylinder should be increased

    B

    Cooling water temperature to the engine should be increased

    C

    Only the turbocharger speed should be reduced

    D

    Engine speed should be reduced


    正确答案： D
    解析： 暂无解析

  • 第15题：

    单选题
    The most practical way of detecting an overload in one cylinder of an operating large, low-speed ,main propulsion diesel engine is to （）
    A

    check the cylinder exhausts for black smoke

    B

    listen for combustion knock in that cylinder

    C

    isolate each cylinder and inspect the injector

    D

    check the cylinder exhaust temperature frequently


    正确答案： C
    解析： 暂无解析

  • 第16题：

    单选题
    The term diesel engine scavenging means（）
    A

    delivering more air into the cylinder than it would normally receive during an ordinary charging process

    B

    forcing the products of combustion out of the cylinder with the fresh air charge

    C

    collecting the air charge at the cleaner

    D

    combustion and expansion of hot gas


    正确答案： B
    解析： 暂无解析

  • 第17题：

    单选题
    How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）
    A

    One

    B

    Two

    C

    Four

    D

    Eight


    正确答案： B
    解析： 暂无解析

  • 第18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19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20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21题：

    单选题
    Trunk-type diesel engine pistons are most effectively cooled by heat（）
    A

    conducted through the engine block

    B

    conducted to water cooled cylinder walls

    C

    conducted through the piston crown

    D

    loss to escaping exhaust gases


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    The function of diesel engine piston compression rings is to （）.
    A

    prevent piston side thrust

    B

    prevent engine friction losses

    C

    transmit heat from the piston to the cylinder liner

    D

    remove oil from the cylinder combustion space


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    Which of the listed conditions will affective pressure the most in the cylinder of a diesel engine?（）
    A

    TBN of the lubricating oil

    B

    Temperature of the lube oil

    C

    Completeness in the mixing of the fuel and air

    D

    Temperature of the cooling (sea) water


    正确答案： C
    解析： 暂无解析

相关内容