A.decreasing the amount of valve overlap
B.preheating the air intake
C.after-cooling the intake air
D.preheating light fuel
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A.Planetary gear set
B.Torsional vibration damper
C.Friction clutch
D.Air bladder clutch
A.increase the density of the cylinder air charge
B.prevent turbocharger overheating
C.liminate the need for a pre-cooler
D.remove moisture from air compressed by the turbocharger
A.induce carbon formation on cylinder walls
B.improve fuel penetration in the combustion space
C.form a friction reducing film between mating surfaces
D.lubricate the fuel injection
A.Improper fuel rack positioning
B.Lengthy opening of the exhaust valve
C.Excessively early injection timing
D.Extended light load operation
A.higher torque but lower brake horsepower
B.lower torque but higher brake horsepower
C.higher torque and lower brake horsepower
D.lower torque and higher brake horsepower
最新試題
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
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（）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
If separating effect is not good, which measure should be taken （）
Cold weather starting of a diesel engine may be made easier by（）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）