燃料温度系数 fuel temperature coefficient
燃料温度系数 fuel temperature coefficient
相关考题：
High firing pressures and low exhaust temperature in a diesel engine may resultfrom( ).A.decreased piston to cylinder head clearanceB.increased exhaust system back pressureC.early fuel injection timingD.low scavenge air temperature
As its temperature rises, the volume of fuel oil in the tanks will ______.A.remain the sameB.increaseC.decreaseD.can’t be comfirmed
单选题Heat damage to fuel injection nozzles on small high-speed diesel engines, can be prevented by（）Aemploying fuel oil as a cooling mediumBpreventing hard carbon deposit on nozzle tipsCavoiding fuel oil temperature exceeding builder’s specificationDensuring good metallic contact between nozzles and cylinder heads
单选题The (auto)ignition temperature is that temperature atwhich（）.Ano spark or flame is required to ignite gas or vaporBa fuel begins to give off explosive vaporsCa fuel if ignited will continue to burnDa 1% mixture of the fuel with air will explode
单选题Exhaust temperature increases in all cylinders, the possible cause may be（） (1) increased scavenging air temperature (2) air in fuel pumps and fuel valves (3) fouling of air and gas passagesA(1)+(2)B(1)+(3)C(2)+(3)D(1)+(2)+(3)
单选题Late fuel oil injection in a diesel engine can result in （）Afuel knockBincreased powerClow compression pressureDhigh exhaust temperature
单选题Low cylinder compression pressure and a high exhaust temperature may indicate （）Aearly fuel injection timingBleaking valvesCa continuously open scavenge air portDlow cooling water temperature
单选题Increasing the temperature of a fuel will reduce its （）.AviscosityBpressureCresistanceDsetting point
单选题As its temperature rises, the volume of fuel oil in the tanks will （）.Aremain the sameBincreaseCdecreaseDnone of the above
单选题To successfully reduce an excessively high diesel engine exhaust gas temperature, you should （）.Areduce the engine driven fuel pump outlet pressureBretard the fuel injector timing to reduce powerCincrease the fuel rack settingDreduce the load on the engine
单选题High firing pressures and a low exhaust temperature in a diesel engine may result from （）.Adecreased piston to cylinder head clearanceBincreased exhaust system back pressureCearly fuel injection timingDlow scavenge air temperature
单选题A fuel injection valve opening at pressure lower than normal will result in（）.Alate fuel injectionBearly fuel injectionChigh exhaust temperature from that cylinderDdecreased effective stroke from that injector
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 （）Aincrease scavenge air pressureBreduce fuel booster pump pressureCadjust the fuel rackDretard fuel injector timing
单选题The amount of expansion space to be left in a fuel tank when fuel oil is being received, is determined by the （）.Aquantity of fuel to be receivedBflash point of the fuel as it is receivedCfuel temperature as it is receivedDviscosity of the fuel being received
单选题The temperature of the fuel oil received during bunkering operations is critical in determining the（）Aexpansion space to leave in a tankBflash point at which the fuel will burnCtemperature to which the fuel must be heatedDrate at which the fuel can be pumped during transfer operations
单选题When restarting a heavy fuel diesel engine that has been stopped for some time, the engine should（）Aincrease the starting air pressureBuse a higher than normal cranking speedCincrease the fuel injection pressureDuse a fuel having a lower ignition temperature