网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
Early injection timing is indicated by （）.
A
high exhaust temperature and low firing pressure
B
high exhaust temperature and high firing pressure
C
low exhaust temperature and low firing pressure
D
low exhaust temperature and high firing pressure
参考答案
参考解析
解析：
暂无解析
更多 “单选题Early injection timing is indicated by （）.A high exhaust temperature and low firing pressureB high exhaust temperature and high firing pressureC low exhaust temperature and low firing pressureD low exhaust temperature and high firing pressure” 相关考题
考题
If the diesel engine fuel injection timing is changed to delay the start of injection until the pistons are at top dead center, the engine will_________.A.backfire through the air intakesB.develop less power under loadC.have high firing pressuresD.lift its cylinder relief valves
考题
Because the timing of injection is crucial, _____ mounted on the camshaft, which is driven by the crankshaft are used to operate the fuel pumps, one of which is provided for each cylinder.A.gearsB.ramsC.barrelsD.cams
考题
High cylinder firing pressure, accompanied by low exhaust temperature, can result from ___.A.improper fuel rack positingB.lengthy exhaust valve durationC.extend operation at light loadD.excessively early injection timing
考题
In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with ______.A.low firing pressureB.low exhaust temperatureC.mechanical knock in each cylinderD.fuel knock in each cylinder
考题
Which timing mode is appropriate for an SDH NE that is adjacent to an SDH NE Bits-1 timing？ （）A、 DUSB、 line timingC、 loop timingD、 internal timingE、 through timing
考题
单选题Which of the conditions listed would cause simultaneous high cylinder firing pressure and low exhaust temperature?（）A
Improper fuel rack positioningB
Lengthy opening of the exhaust valveC
Excessively early injection timingD
Extended light load operation
考题
单选题With VIT unit the timing of fuel injection of an engine can be regulated automatically according to the （）.A
ship draftB
pitchC
engine loadD
oil viscosity
考题
单选题Late fuel injection timing is indicated by （）A
lower than normal cylinder pressure and low exhaust temperatureB
lower than normal cylinder pressure and high exhaust temperatureC
higher than normal cylinder pressure and low exhaust temperatureD
higher than normal cylinder pressure and high exhaust temperature
考题
单选题Early injection timing is indicated by （）.A
high exhaust temperature and low firing pressureB
high exhaust temperature and high firing pressureC
low exhaust temperature and low firing pressureD
low exhaust temperature and high firing pressure
考题
单选题Fuels of different qualities may require advancing or retarding the injection timing, in addition to which if the injection timing is advanced when the engine is running at loads below the （）, then a saving in fuel can be achieved.A
BHPB
MCRC
IHPD
MEP
考题
单选题If a single cylinder relief valve on a main propulsion diesel engine begins to lift, but it is not possible to secure the engine, which of the following actions should be taken?（）A
Increase the cooling water flow to the engineB
Secure or reduce fuel to that cylinderC
Screw down on the pressure adjusting spring to decrease to decrease popping pressureD
Readjust the injection timing
考题
单选题A diesel engine will lose power if fuel injection occurs too early because the （）A
fuel will not be properly atomized in the cylinderB
ignition will be delayed due to low ignition temperatureC
maximum fuel expansion will occur on the compression strokeD
fuel will ignite before top dead center
考题
单选题If a single cylinder relief valve on a diesel engine lists frequently while the engine is running, the cause may be an （）A
excessively late injection timing for each cylinderB
incorrectly adjusted intake valve timingC
incorrectly adjusted fuel injectorD
incorrectly adjusted intake valve clearance
考题
单选题Which timing mode is appropriate for a SONET NE that is adjacent to a SONET NE using BITS-1 timing source?（）A
DUSB
line timingC
loop timingD
internal timingE
through timing
考题
单选题The sequence of fuel injection into cylinders is determined by （）.A
the steeringB
the driven gearC
the turning gearD
the timing gear
考题
单选题In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with（）A
low firing pressureB
low exhaust temperatureC
mechanical knock in each cylinderD
fuel knock in each cylinder
考题
单选题If the diesel engine fuel injection timing is changed to delay the start of injection until the pistons are at top dead center, the engine will（）A
backfire through the air intakesB
develop less power under loadC
have high firing pressuresD
lift its cylinder relief valves
考题
单选题Which of the listed set of conditions indicates early fuel injection timing?（）A
Loss of engine power and high exhaust temperaturesB
Higher than normal firing pressure and low exhaust temperaturesC
High fuel consumption and high exhaust temperaturesD
Lower than normal compression pressure and high exhaust temperature
考题
单选题With Variable Injection Timing the start of injection may be （）as the engine load is reduced.A
advancedB
retardedC
kept constantD
none of the above
考题
单选题A faulty injection in one cylinder of an operating diesel engine can be located by （）A
cutting out individual injectors and noting engine performanceB
checking lube oil temperatureC
checking cam positionD
using a timing light
考题
单选题All of the diesel engine cylinder firing pressures are normal, yet all of the exhaust temperatures are lowWhich of the following situations is responsible for this condition?（）A
Excessively early injection timingB
Combustion knockC
Leaking piston ringsD
Light load
考题
单选题Significant retardation of a diesel engine fuel injection timing will result in （）A
smoother engine operationB
advanced fuel ignitionC
increased fuel economyD
reduced engine power
考题
单选题Which of the following problems will occur if the needle valve in a fuel injection nozzle sticks in the open position?（）A
Fuel injection timing will changeB
Nozzle operation will be unaffectedC
Fuel will leak into the drain lineD
Fuel will not be delivered
考题
单选题Late fuel injection occurring at, or after TDC in a diesel engine is indicated by excessive exhaust smoke and （）A
low exhaust temperatureB
low firing pressureC
fuel knock in each cylinderD
mechanical knock in each cylinder
考题
单选题Early fuel injection timing is indicated by the cylinder pressure being（）A
above normal with a below normal exhaust temperatureB
above normal with a normal exhaust temperatureC
below normal with a normal exhaust temperatureD
below normal with an above normal exhaust temperature
考题
单选题Late fuel injection in a diesel engine is indicated by low firing pressure with （）A
low exhaust temperatureB
low exhaust pressureC
mechanical knock in each cylinderD
black or gray exhaust smoke
考题
单选题High cylinder firing pressure, accompanied by low exhaust temperature, can result from （）A
improper fuel rack positingB
lengthy exhaust valve durationC
extend operation at light loadD
excessively early injection timing
考题
单选题With （） unit the timing of fuel injection of an engine can be regulated automatically.A
MBTB
MEGC
VSGD
VIT
热门标签
最新试卷