inlet port
exhaust port
spill port
scavenge port
第1题:
Indirect cooling of fuel injector nozzle holders for diesel engines is accomplished primarily by
A.heat conduction into the injected fuel oil
B.heat conduction into the water jacket wall
C.water circulation through passages in the holder
D.fuel oil circulation through passages m the holder
第2题:
When the fuel oil is burning in the combustion chamber, it _____.
A.gives up large amount of heat
B.gives off large amount of heat
C.gives up large amount of steam
D.gives off large amount of steam
第3题:
Fuel droplets injected into a diesel engine cylinder must have adequate penetration to ____.
A.prolong the ignition delay period
B.ensure the beginning of fuel injection
C.thoroughly utilize the air charge
D.allow controlled fuel combustion
第4题:
controlling the amount of fuel injected into the cylinders
varying the speed of the turbocharger
adjusting the compression ratio
changing the timing of the fuel injection camshaft
第5题:
gives up large amount of heat
gives off large amount of heat
gives up large amount of steam
gives off large amount of steam
第6题:
When fuel is injected late into a diesel engine cylinder_______.
A.the exhaust will be clear
B.fuel consumption will be low
C.all the fuel will be burned at top dead center
D.fuel consumption will be high
第7题:
quantity of fuel injected is decreased
quantity of fuel injected will always be increased
start of injection is advanced
duration of injection will always be greater
第8题:
You should deposit a certain amount of money with a bank before you buy a house.
A.Right
B.Wrong
C.Doesn't say
第9题:
spark plugs
glow plugs
heat of compression
a magneto
第10题:
valve will open later
valves will close later
amount of fuel injected will be increased
amount of fuel injected will be decreased