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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 engine
B
Secure or reduce fuel to that cylinder
C
Screw down on the pressure adjusting spring to decrease to decrease popping pressure
D
Readjust the injection timing
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更多 “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” 相关考题
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单选题The rate of cylinder lubricating oil metered to each cylinder of a large low-speed main propulsion diesel engine is （）A
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the proper seating of new ringsC
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provides foundations for the main propulsion enginesD
transfers the driving force of the propeller to the hull
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单选题Which one of following statement is not true concerning the suitable sites of the direct acting relief valve and the pilot operated relieve valve?（）A
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单选题The opening of an exhaust valve on a modem, large, low-speed, main propulsion diesel engine may be actuated by （）.A
direct action of cam shaftB
compressed air pressureC
hydraulic “push rods”D
direct action of the main piston moving down
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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
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liquid in the cylinderB
low compression in the cylinderC
high exhaust temperatureD
poor fuel penetration
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the cylinder cover is crackedB
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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
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incorrectly adjusted intake valve clearance
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单选题Which of the conditions listed could cause the cylinder relief valves on a large, low-speed, propulsion diesel engine to lift?（）A
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Excessive fuel injectionC
Very late injection timingD
Incorrect crankshaft clearance
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decreased fuel consumption per brake horsepowerB
more complete cylinder scavengingC
extended valve lifeD
carbon formation on combustion chamber surfaces
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listen for combustion knock in that cylinderC
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check the cylinder exhaust temperature frequently
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the relief valve should open before the high-pressure cutoutB
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单选题Prior to starting, the purpose of turning over a main propulsion diesel engine with the cylinder test cocks open, is to （）A
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after the discharge valveB
between the pump and discharge valveC
after the suction valveD
between the pump and suction valve
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low TBN valueB
high alkaline reserveC
low flash pointD
high pour point
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单选题If it becomes necessary to cutout an individual cylinder of a large, low-speed, main propulsion diesel engine, the fuel to that cylinder should be secured and its （）A
fuel pump should be removed and all connections blanked offB
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cylinder oil feed rate should be reducedD
cylinder oil feed rate should be increased to the maximum flow capable of the metering pump
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单选题When the starting air valve closes on one cylinder, another starting air valve has （） opened on another cylinder whose piston has just commenced its downward stroke.A
justB
nearlyC
merelyD
already
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the power strokeB
the compression strokeC
low load operation onlyD
periods of standby
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