A.ensure penetration and distribution of the fuel in the combustion chamber
B.ensure the needle valve is flushed clean during each injection
C.prevent combustion gas blowback into the open needle valve
D.prevent reflected pressure waves when the needle valve closes
您可能感興趣的試卷
你可能感興趣的試題
A.slightly less than atmospheric pressure
B.approximately equal to exhaust manifold pressure at all times
C.that is widely fluctuating constantly
D.decreasing as engine load increases
A.volute pump
B.centrifugal pump
C.diaphragm pump
D.gear pump
A.fuel oil pressure
B.a cam operated follower
C.a spring-loaded pressure plate
D.timing gears keyed to the crankshaft
A.six consecutive starts
B.eight consecutive starts
C.ten consecutive starts
D.twelve consecutive starts
A.cylinder heads
B.exhaust valves
C.scavenging air
D.injectors
最新試題
Lube oil cannot be efficiently filtered if its （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
Diesel engine control can be obtained by the bridge （）.
A thrust bearing is used with a propulsion diesel engine to （）.
The main purpose of the piston oil scraper rings is to （）.
For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.
To determine if the lube oil filter elements need changing, （）.
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
Maximum horsepower of a diesel engine is attained （）.