A.lower the no-load RPMs
B.provide more air for combine with the fuel
C.increase the no-load RPMs
D.provide more fuel combine with the air
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A.high firing pressure
B.overload of that particular cylinder
C.smoky exhaust
D.cooling water temperature rise
A.valve overlap
B.volumetric efficiency
C.turbulence of the air change
D.fuel efficiency
A.greater overall efficiency
B.greater fuel economy
C.lower horsepower
D.lower compression ratio
A.blows out the exhaust gases
B.supplies oxygen for combustion
C.cools the valves and cylinder walls
D.all of the above
A.delivering more air into the cylinder than it would normally receive during an ordinary charging process
B.forcing the products of combustion out of the cylinder with the fresh air charge
C.collecting the air charge at the cleaner
D.combustion and expansion of hot gas
最新試題
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