单选题Fuel oil injected into the cylinder of a diesel engine just after the piston passes top dead center, will()Aincrease engine powerBincrease engine loadCdecrease engine powerDimprove fuel economy

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


参考解析

解析: 暂无解析

相关考题:

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

If you suspect a diesel engine is misfiring due to air leakage into the fuel system, you should begin looking for the leak at theA.fuel line connections to the cylinder injection valvesB.gasket surfaces of the fuel oil filtersC.discharge fittings of the fuel injector pumpsD.suction side of the fuel oil transfer pump

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

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

单选题Low compression in a diesel engine can be caused by ()Aclogged coolant passagesBa leaking cylinder head gasketClow fuel oil pressureDworn or broken cylinder liner sealing rings

单选题The consistent burning of fuel oil with a high sulfur content in a diesel engine will result in ()Aclogged fuel injection pumpsBincreased cylinder liner wearCintake valve stem corrosionDvarnish deposit on pistons

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?()AExcessive cylinder linerBwater in the fuel systemCCracked cylinder linerDLeaking lube oil cooler

单选题When the opening pressure of a diesel fuel injector is greater than that specified by the engine manufacturer,the ()Aquantity of fuel injected is decreasedBquantity of fuel injected will always be increasedCstart of injection is advancedDduration of injection will always be greater

单选题Fuel oil discharged to the diesel engine cylinder is atomized at the ()AturbochargerBinjection nozzle tipCcarburetorDfuel oil pump

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?()AQuantity of fuel injected tends to be decreasedBQuantity of fuel injected will always be increasedCStart of injection tends to be advancedDDuration of injection will always greater

单选题When fuel is injected late into a diesel engine cylinder,().Athe exhaust will be clearBfuel consumption will be lowCall the fuel will be burned at top dead centerDfuel consumption will be high

单选题Diesel engine fuel oil contamination often results in ()Agovernor malfunctionsBfuel injection system malfunctionsChigh cylinder lube oil temperaturesDlow intake temperatures

单选题Low compression pressure in a diesel engine is caused by()Alow water in the expansion tankBimproperly seated valvesClow fuel oil pressureDworn or broken cylinder liner sealing rings

单选题Low compression in a diesel engine could be caused by()Aworn or broken cylinder liner sealing ringsBhigh cooling water temperatureCworn or broken piston ringsDlow fuel oil pressure

单选题In a diesel engine, when the fuel is injected into the cylinder,()Athe piston is just coming upward from the bottom dead centerBthe piston has moved about one-fifth of the way upCthe piston has moved most of the way up and almost reached the TDCDthe piston has just past the TDC

单选题A change in the quality of fuel atomization by a diesel engine fuel injector would be caused by a/an ()Aincrease in engine speedBincrease in cylinder turbulenceCleaking needle valveDreduction in cylinder turbulence

单选题One result of operating a diesel engine at light load with excessively low cooling water temperature is a/an ()Adecrease in ignition lagBincrease in fuel economyCreduction in lube oil viscosityDincrease in cylinder misfiring

单选题Engine coolant accumulating in the diesel engine lubricating oil can result from a ()Alow oil pressureBhigh coolant pressureCleaking fuel injectorDcracked cylinder head or liner

单选题Heat for igniting the fuel oil in the cylinder of a diesel engine is generated by the ()Aelectronic ignition systemBcompression of air by the pistonCfriction in the fuel injectorDfuel oil bearing system

单选题If you suspect a diesel engine is misfiring due to air leakage into the fuel system, you should begin looking for the leak at the ()Afuel line connections to cylinder injection valvesBgasket surfaces of the fuel oil filtersCdischarge fitting of the fuel injector pumpsDsuction side of the fuel oil tran

单选题Fuel oil begins injection into the cylinder of a four-stroke/cycle diesel engine during the ().Aintake strokeBexhaust strokeCpower strokeDcompression stroke

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Fuel droplets injected into a diesel engine cylinder must have adequate penetration to ()Aprolong the ignition delay periodBensure the beginning of fuel injectionCthoroughly utilize the air chargeDallow controlled fuel combustion

单选题Fuel injected into a diesel engines cylinder is ignited by ().Athe heat compressed fuel/air mixture in the cylinderBthe fuel igniterCthe fuel injectorDthe fuel pump

单选题Fuel oil injected into the cylinder of a diesel engine just after the piston passes top dead center, will()Aincrease engine powerBincrease engine loadCdecrease engine powerDimprove fuel economy

单选题When fuel is injected in a diesel engine cylinder too early, ()Aignition may be delayedBfuel economy is not affectedCexhaust gas temperature will be unchangedDthe exhaust will be clear

单选题Before engaging the turning gear and turning the diesel engine, which of the following operation should be done except()Aopen the indicator cocksBsupply some CYL Oil to cylinder liner wall with lubricator (only for two stoke diesel engine)Cput the fuel handle in the “stop” positionDpump up the air bottle

单选题Clogged diesel engine fuel oil filters can cause()Aloss of powerBmisfiringClow fuel oil pressureDAll of the above