Generally speaking, the fuel injected into a marine diesel engine combustion chamber is ignited by ______.A.spark plugsB.glow plugsC.heat of compressionD.a magneto

题目

Generally speaking, the fuel injected into a marine diesel engine combustion chamber is ignited by ______.

A.spark plugs

B.glow plugs

C.heat of compression

D.a magneto

相似考题

1.Fuel droplets injected into a diesel engine cylinder must have adequate penetration to ____.A.prolong the ignition delay periodB.ensure the beginning of fuel injectionC.thoroughly utilize the air chargeD.allow controlled fuel combustion

2.单选题The starting of a marine diesel engine is generally carried out with the assistance of （）.A compressed airB electricityC hydraulic oilD compressing air

3.单选题When the opening pressure of a diesel fuel injector is greater than that specified by the engine manufacturer，the （）A quantity of fuel injected is decreasedB quantity of fuel injected will always be increasedC start of injection is advancedD duration of injection will always be greater

4.When fuel is injected late into a diesel engine cylinder_______.A.the exhaust will be clearB.fuel consumption will be lowC.all the fuel will be burned at top dead centerD.fuel consumption will be high

更多“Generally speaking, the fuel injected into a marine diesel engine combustion chamber is ig ”相关问题

  • 第1题：

    单选题
    Generally speaking，the fuel injected into a marine diesel engine combustion chamber is ignited by（）.
    A

    spark plugs

    B

    glow plugs

    C

    heat of compression

    D

    a magneto


    正确答案： A
    解析： 暂无解析

  • 第2题：

    单选题
    In a diesel engine, the time taken to heat the fuel particles, turn them into vapor, and bring about combustion is called （）
    A

    injection lag

    B

    ignition delay

    C

    compression

    D

    turbulence lag


    正确答案： C
    解析： 暂无解析

  • 第3题：

    单选题
    When the opening pressure of a diesel engine fuel injector is greater than that specified by the engine manufacturer, which of the following problems can be expected?（）
    A

    Quantity of fuel injected tends to be decreased

    B

    Quantity of fuel injected will always be increased

    C

    Start of injection tends to be advanced

    D

    Duration of injection will always greater


    正确答案： A
    解析： 暂无解析

  • 第4题：

    单选题
    When fuel is injected late into a diesel engine cylinder,（）.
    A

    the exhaust will be clear

    B

    fuel consumption will be low

    C

    all the fuel will be burned at top dead center

    D

    fuel consumption will be high


    正确答案： D
    解析： 暂无解析

  • 第5题：

    单选题
    High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by （）.
    A

    engine overload

    B

    low combustion temperature

    C

    plugged fuel nozzle holes

    D

    excessive compression pressure


    正确答案： C
    解析： 暂无解析

  • 第6题：

    单选题
    The term “proper metering”, as applied to a diesel fuel injection system, can be best defined as （）.
    A

    delivering the same quantity of fuel to each cylinder for each power stroke according to engine load

    B

    maintaining the metering adjustment for a reasonable period under all load conditions

    C

    timing fuel injection to obtain maximum power and good fuel economy

    D

    distributing the fuel to all parts of the combustion chamber for proper combustion


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    The diesel engine is a type of internal combustion engine which ignites the fuel by injecting it into hot, high pressure air in a （）.
    A

    air bottle

    B

    air compressor

    C

    crank case

    D

    combustion chamber


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    The longer the ignition delay period occurs in a diesel engine, the （）.
    A

    less fuel will enter the cylinder

    B

    lower will be cylinder compression temperatures

    C

    more complete will be fuel combustion

    D

    more rapid will be the rise in combustion pressure


    正确答案： B
    解析： 暂无解析

  • 第9题：

    单选题
    In the cylinder of a diesel engine fuel is ignited by the（）
    A

    spark from a plug in the pre-combustion chamber

    B

    electrical discharge from the distributor

    C

    heat of compression within the cylinder

    D

    heat from the fuel injection nozzle


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    One of function of diesel engine lubricating oil is to （）
    A

    induce carbon formation on cylinder walls

    B

    improve fuel penetration in the combustion space

    C

    form a friction reducing film between mating surfaces

    D

    lubricate the fuel injection


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    Fuel oil injected into the cylinder of a diesel engine just after the piston passes top dead center, will（）
    A

    increase engine power

    B

    increase engine load

    C

    decrease engine power

    D

    improve fuel economy


    正确答案： C
    解析： 暂无解析

  • 第12题：

    单选题
    Proper dispersion of fuel in a diesel engine cylinder is dependent upon the （）
    A

    injection pressure

    B

    shape of combustion space

    C

    turbulence in combustion space

    D

    all of the above


    正确答案： A
    解析： 暂无解析

  • 第13题：

    单选题
    A leaking diesel engine fuel injector will cause（）
    A

    prolonged maintenance intervals

    B

    improved atomization

    C

    greater fuel economy

    D

    incomplete combustion


    正确答案： D
    解析： 暂无解析

  • 第14题：

    单选题
    Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
    A

    a shortened ignition delay period

    B

    a lean fuel/air mixture

    C

    excess fuel in the combustion chamber

    D

    rapid vaporization of injected fuel droplets


    正确答案： C
    解析： 暂无解析

  • 第15题：

    单选题
    A diesel engine with a combustion chamber located between the crowns of two pistons is known as a/an （）.
    A

    double-acting engine

    B

    opposed pistons engine

    C

    single-acting engine

    D

    horizontal acting engine


    正确答案： D
    解析： 暂无解析

  • 第16题：

    单选题
    Operating a propulsion diesel engine at less than 30% of designed normal load for prolonged periods will result in （）.
    A

    decreased fuel consumption per brake horsepower

    B

    more complete cylinder scavenging

    C

    extended valve life

    D

    carbon formation on combustion chamber surfaces


    正确答案： B
    解析： 暂无解析

  • 第17题：

    单选题
    In a marine diesel engine the oil sump is （）.
    A

    just below the crankcase

    B

    the oil cup for the exhaust valve

    C

    the pan for collecting drain fuel oil

    D

    oil circulating pump


    正确答案： A
    解析： 暂无解析

  • 第18题：

    单选题
    Proper atomization of fuel in diesel engine combustion chambers will （）.
    A

    affect the injection pressure

    B

    improve combustion

    C

    reduce compression pressure

    D

    decrease power output


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    The rate of fuel injection in a diesel engine cylinder depends primarily on （）.
    A

    the size of the holes in the fuel nozzle

    B

    timing of the pump

    C

    supply pressure to the pump

    D

    shape of the combustion chamber


    正确答案： A
    解析： 暂无解析

  • 第20题：

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

    excessive fuel penetration

    B

    prolonged injection lag

    C

    reduced ignition lag

    D

    prolonged ignition lag


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    Sludge formation in a diesel engine lube oil system is caused by（）
    A

    carbonization of oils from the combustion chambers

    B

    emulsions of lube oil and water

    C

    coagulation of unburned fuel below the piston rings

    D

    all of the above


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    Fuel droplets injected into a diesel engine cylinder must have adequate penetration to （）
    A

    prolong the ignition delay period

    B

    ensure the beginning of fuel injection

    C

    thoroughly utilize the air charge

    D

    allow controlled fuel combustion


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    When fuel is injected in a diesel engine cylinder too early, （）
    A

    ignition may be delayed

    B

    fuel economy is not affected

    C

    exhaust gas temperature will be unchanged

    D

    the exhaust will be clear


    正确答案： D
    解析： 暂无解析

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