A.Excessively early injection timing
B.Combustion knock
C.Leaking piston rings
D.Light load
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A.Combustion does not begin until the piston starts down on the power stroke
B.Maximum combustion pressure is reached before TDC
C.Turbulence in the cylinder causes a delay in ignition
D.Maximum cylinder firing pressure is not developed until the piston passes TDC
A.performance
B.horsepower output
C.fuel consumption
D.scavenge effect
A.low compression pressure
B.increased piston wear
C.increased cylinder lube oil consumption
D.poor contact between compression rings and liner
A.The sequence of events that produce a power pulse
B.One rotation of the engine crankshaft
C.One stroke of a piston
D.All of the above
A.greater high temperature strength
B.better heat conductivity
C.greater weight per cubic inch
D.increased resistance to wear
最新試題
In using reduction gears to obtain efficient propeller speeds, （）.
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To determine if the lube oil filter elements need changing, （）.
Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
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If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
The ability of the governor to prevent fluctuations in engine speed is termed （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
Combustion knock occurring in a diesel engine can be caused by （）.