A.a glazed surface on the spring
B.nicks in the protective coating
C.a build up of sludge deposits
D.cracks in the surface of the spring
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A.Frequent draining of accumulated moisture
B.Frequent testing of relief valves
C.A close watch on temperature to prevent fluctuations in pressure
D.Frequent cleaning to re move oil and foreign matter
A.over-speeding
B.overload
C.low exhaust temperature
D.high crankcase pressure
A.line up the engine fore restarting with light diesel oil
B.reposition the fuel injection cam
C.change the intake and exhaust valve cam positions
D.place the starting cam in the intermediate position
A.High sulphur content fuel
B.High lube oil temperatures
C.High vanadium content fuel
D.Excessive piston slap
A.having a shorter duration of opening
B.having a longer duration of opening
C.closing sooner
D.opening later
A.valve will open later
B.valves will close later
C.amount of fuel injected will be increased
D.amount of fuel injected will be decreased
A.a leaking fuel injection nozzle
B.a clogged air filter
C.early fuel injection
D.burned valves
A.on the power stroke
B.on the exhaust stroke
C.at the end of the power stroke
D.at the start of the intake stroke
A.early fuel injection timing
B.leaking valves
C.a continuously open scavenge air port
D.low cooling water temperature
A.clogged air filter
B.compression stroke
C.burned exhaust valves
D.all of the above
最新试题
The cetane rating of diesel fuel is an indication of the ()
The additional mark ()in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.
() is not installed on the main switchboar.
Which of the following items don’t belong to dock repair works?()
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated()
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the()
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a()
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is()
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?()
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?()