单选题If the piston groove drain holes for the oil control rings become clogged, which of the following is likely to occur?（）A The oil control rings will seal improperly and wear rapidlyB The piston will overheat due to insufficient lubricationC Excessive oi

题目
单选题
If the piston groove drain holes for the oil control rings become clogged, which of the following is likely to occur?（）
A

The oil control rings will seal improperly and wear rapidly

B

The piston will overheat due to insufficient lubrication

C

Excessive oil will remain on the cylinder wall

D

Light brown smoke will emanate from the engine exhaust

相似考题

1.Which of the following statements represents the function of the compression rings installed at the top of a diesel Engine piston?A.Control the amount of lube oil burned in the combustion chamberB.Transmit heat from the piston to the cylinder linerC.Prevent damage to ring groove inserts by acting as a heat damD.Dissipate combustion chamber gas pressure by channeling it through the ring gap

2.Engine operating conditions may be indicated by the color of the exhaust smoke Black smoke could indicate .A.an insufficient speed droop settingB.an overloaded engineC.clogged drain holes in the oil control ringsD.complete combustion

3.单选题The primary purpose of oil control rings on a diesel piston is to（）A provide a reservoir for cylinder lubricationB pump oil into the combustion space for cylinder coolingC prevent excessive lubricating oil consumptionD allow hydraulic oil film formation on the cylinder

4.If a used lube oil analysis indicates excessive chromate content, this meansA.air filtration is inadequateB.engine coolant is leaking into the lube oilC.fuel oil is leaking into the lube oilD.the piston rings are excessive worn

参考答案和解析
正确答案： B
解析： 暂无解析
更多“If the piston groove drain holes for the oil control rings b”相关问题

  • 第1题：

    单选题
    To function properly, oil control rings used on a diesel engine piston must distribute sufficient oil to all parts of the cylinder wall and must also（）.
    A

    prevent any lubricant from reaching

    B

    prevent excessive lubrication from reaching the combustion space

    C

    Provide metal-to-metal contact to seal the cylinder against blow-by

    D

    assure a positive means of scraping carbon accumulation from the cylinder


    正确答案： C
    解析： 暂无解析

  • 第2题：

    单选题
    In order to keep excess oil from the intake ports in two-stroke/cycle diesel engines, （）
    A

    wide compression rings are used

    B

    oil rings are located above the piston

    C

    chromium plating is used on all piston rings

    D

    oil rings are located near the bottom of the piston skirt


    正确答案： C
    解析： 暂无解析

  • 第3题：

    单选题
    For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an （）.
    A

    oil spray

    B

    oil bath

    C

    oil control rings

    D

    drilled passage through the camshaft


    正确答案： B
    解析： 暂无解析

  • 第4题：

    单选题
    Improper cooling of a diesel engine cylinder liner due to the accumulation of scale deposits may cause （）.
    A

    low compression pressure

    B

    increased piston wear

    C

    increased cylinder lube oil consumption

    D

    poor contact between compression rings and liner


    正确答案： B
    解析： 暂无解析

  • 第5题：

    单选题
    Incomplete combustion in a running diesel engine can cause piston rings to become stuck as a result of （）
    A

    residual carbon deposits

    B

    lube oil viscosity breakdown

    C

    uneven heat expansion of the rings

    D

    uneven heat expansion of the piston


    正确答案： B
    解析： 暂无解析

  • 第6题：

    单选题
    Which of the following statements represents the function of the compression rings installed at the top of a diesel Engine piston?（）
    A

    Control the amount of lube oil burned in the combustion chamber

    B

    Transmit heat from the piston to the cylinder liner

    C

    Prevent damage to ring groove inserts by acting as a heat dam

    D

    Dissipate combustion chamber gas pressure by channeling it through the ring gap


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    The main function of piston compression rings is to （）
    A

    prevent excessive cylinder liner wear

    B

    reduce friction losses in the engine

    C

    seal the space between the piston and the liner

    D

    limit upward flow of lube oil into the combustion space


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    Oil control rings used in two-stroke/cycle diesel engines are located near the bottom of the piston skirt in order to （）
    A

    increase the liner area covered by the oil film

    B

    maintain an oil film on the lower liner where scuffing is prevalent

    C

    keep excess oil away from intake and exhaust ports

    D

    help cushion piston skirt side thrust by providing a hydrodynamic oil wedge


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    The main purpose of the piston oil scraper rings is to （）.
    A

    seal the space between the piston and the liner

    B

    reduce the amount of lube oil burned in the combustion chamber

    C

    transmit heat from the piston to the cylinder liner

    D

    damp out fluctuations of the piston side thrust


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    If a used lube oil analysis indicates an excessive chromate content, this means （）
    A

    air filtration is inadequate

    B

    engine coolant leaking into the lube oil

    C

    fuel oil is leaking into the lube oil

    D

    the piston rings are excessively worn


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    If the compression rings on a diesel engine piston become stuck in the ring groove, the cause may be due to（）
    A

    excessive ring action

    B

    excessive ring temperature

    C

    improper ring rotation

    D

    excessive ring face wear


    正确答案： C
    解析： 暂无解析

  • 第12题：

    单选题
    Broken piston rings manifest themselves during the scavenge port inspection by（）
    A

    Lack of elastic tension, when the rings are pressed into the groove by means of a stick

    B

    Blackish appearance

    C

    Fractured rings and missing rings

    D

    all off the above


    正确答案： B
    解析： 暂无解析

  • 第13题：

    单选题
    The film of oil between the rings and the liner is not only essential for the lubrication but also plays an important part in achieving （）.
    A

    an oil seal

    B

    removing heat

    C

    a gas seal

    D

    cooling the piston


    正确答案： D
    解析： 暂无解析

  • 第14题：

    单选题
    A diesel engine piston ring face is in direct contact with the （）.
    A

    top of the ring groove

    B

    cylinder liner oil film

    C

    bottom of the ring groove

    D

    back of the ring groove


    正确答案： B
    解析： 暂无解析

  • 第15题：

    单选题
    Black areas on the sealing surfaces of piston rings indicate（）
    A

    lube oil pumping

    B

    rotating rings

    C

    gas pressure behind the ring

    D

    passage of hot gases


    正确答案： D
    解析： 暂无解析

  • 第16题：

    单选题
    Improperly fitted piston rings in a diesel engine can cause（）
    A

    excessive lube oil consumption

    B

    lower than normal lube oil temperature

    C

    higher than normal exhaust back pressure

    D

    excessive crankshaft end play


    正确答案： D
    解析： 暂无解析

  • 第17题：

    单选题
    Engine operating conditions may be indicated by the color of the exhaust smoke.Black smoke could indicate（）
    A

    an insufficient speed droop setting

    B

    an overloaded engine

    C

    clogged drain holes in the oil control rings

    D

    complete combustion


    正确答案： B
    解析： 暂无解析

  • 第18题：

    单选题
    In a medium speed diesel engine, a trunk type piston may be cooled by（） Ⅰ.oil circulation though passages in the piston crown Ⅱ.heat transfer through piston rings and liner wall
    A

    Ⅰ only

    B

    Ⅱ only

    C

    either Ⅰ or Ⅱ

    D

    neither Ⅰ or Ⅱ


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?（）
    A

    Electric power and starting air

    B

    Lube oil standby pump and control air

    C

    Hydraulic switch and engage jacking gear

    D

    Motor drain and pneumatic control system power


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    The cylinder oil is pumped into the cylinder (via non-return valves) when the piston rings pass the lubricating orifices during （）
    A

    the upward stroke

    B

    the downward stroke

    C

    the power stroke

    D

    the suction stroke


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    All the rings are slightly rounded on their external top and bottom edges to keep the oil film on the cylinder liner during （） for new piston rings.
    A

    the running-in period

    B

    the running process

    C

    gas exchange process

    D

    the boiler firing


    正确答案： B
    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
    Piston compression rings used in a diesel engine function to （）
    A

    transfer heat from the cylinder to the piston

    B

    scrape oil from the sides of the piston

    C

    seal the combustion space from the crankcases

    D

    prevent any piston contact with the cylinder liner


    正确答案： B
    解析： 暂无解析

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