单选题A diesel engine with a combustion chamber located between the crowns of two pistons is known as a/an （）.Adouble-acting engineBopposed pistons engineCsingle-acting engineDhorizontal acting engine
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
参考解析
解析：
暂无解析
相关考题：
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 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
If the exhaust gas temperature of the incinerator is too high, or if sparks are developed, What should you do? A.Close the inlet and outletvalves for diesel oilB.Open the air nozzles in the secondary combustion chamber until it stopsC.Open the air nozzles in the primary combustion chamber until it stopsD.Close inlet valve for pressurized air
_____ the engines, the diesel engine is ____ used engine on boardA.Between / more commonlyB.Among / the most commonlyC.Between / not more commonlyD.Among / not the most commonly
单选题Generally speaking，the fuel injected into a marine diesel engine combustion chamber is ignited by（）.Aspark plugsBglow plugsCheat of compressionDa magneto
单选题The purpose of treating the cooling water of the diesel engine is to（） Ⅰ. resist the scale formation in the cooling chamber Ⅱ.lubricate the engine part Ⅲ.increase thermal capacity Ⅳ.resist corrosionAⅠ+ⅡBⅡ+ⅢCⅢ+ⅣDⅠ+Ⅳ
单选题Poor combustion in a diesel engine can be caused by （）.Ahigh compression pressureBlow intake air temperatureClow exhaust pressureDhigh scavenge air temperature
单选题What determines the number of events occurring in a cycle of operation in an internal combustion engine?（）ACrankshaft revolutionBType of engine (diesel or gasoline)CDistance a piston travels during a strokeDNumber of pistons
单选题Which of the following statements represents the function of the compression rings installed at the top of a diesel Engine piston?（）AControl the amount of lube oil burned in the combustion chamberBTransmit heat from the piston to the cylinder linerCPrevent damage to ring groove inserts by acting as a heat damDDissipate combustion chamber gas pressure by channeling it through the ring gap
单选题Operating a propulsion diesel engine at less than 30% of designed normal load for prolonged periods will result in （）.Adecreased fuel consumption per brake horsepowerBmore complete cylinder scavengingCextended valve lifeDcarbon formation on combustion chamber surfaces
单选题The term “proper metering”, as applied to a diesel fuel injection system, can be best defined as （）.Adelivering the same quantity of fuel to each cylinder for each power stroke according to engine loadBmaintaining the metering adjustment for a reasonable period under all load conditionsCtiming fuel injection to obtain maximum power and good fuel economyDdistributing the fuel to all parts of the combustion chamber for proper combustion
单选题Proper atomization of fuel in diesel engine combustion chambers will （）.Aaffect the injection pressureBimprove combustionCreduce compression pressureDdecrease power output
单选题The function of the piston compression rings used in a diesel engine is to （）Aseal the space between the piston and linerBtransmit heat from the piston to the cylinder linerCreduce the amount of combustion gas blow-byDall of the above
单选题In a modern internal combustion diesel engine, the load carrying part of the engine is referred to as the（）Abedplate or baseBsump or oil panCcylinder blockDframe
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 （）.Aair bottleBair compressorCcrank caseDcombustion chamber
单选题The rate of fuel injection in a diesel engine cylinder depends primarily on （）.Athe size of the holes in the fuel nozzleBtiming of the pumpCsupply pressure to the pumpDshape of the combustion chamber
单选题As for a diesel engine, lack of combustion air may be due to （）.Afouling turbineBfuel pump faultsClubrication failureDexcessive cooling
单选题Lubricating oil should be changed on a heavy duty diesel engine when（）.Ait gets dark in colorBa sample rubbed between fingers feels thinCit has been in use for a specified intervalDit no longer supports combustion
单选题How does combustion air enter the cylinder of a two-cycle diesel engine?（）ACylinder head valvesBPortsCTurbo chargersDBleeder valves
单选题Which of the combustion parameters listed is used in a diesel engine, but NOT related to the injection system?（）AAtomizationBMeteringCEffective strokeDPenetration
单选题For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.Ait has a longer power strokeBmore air gets into the cylinder each strokeCit develops twice as many power strokes at the same speedDhigher combustion pressure is developed
单选题One of function of diesel engine lubricating oil is to （）Ainduce carbon formation on cylinder wallsBimprove fuel penetration in the combustion spaceCform a friction reducing film between mating surfacesDlubricate the fuel injection
单选题The function of diesel engine piston compression rings is to （）.Aprevent piston side thrustBprevent engine friction lossesCtransmit heat from the piston to the cylinder linerDremove oil from the cylinder combustion space
单选题The diesel engine is a type of （）.Aturbine engineBgas turbineCsteam engineDinternal combustion engine
单选题Proper dispersion of fuel in a diesel engine cylinder is dependent upon the （）Ainjection pressureBshape of combustion spaceCturbulence in combustion spaceDall of the above