海船船员考试
单选题The rate of fuel injection in a diesel engine cylinder depends primarily on （）.A the size of the holes in the fuel nozzleB timing of the pumpC supply pressure to the pumpD shape of the combustion chamber
题目
the size of the holes in the fuel nozzle
timing of the pump
supply pressure to the pump
shape of the combustion chamber
相似问题和答案
第1题：
If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may be delayed because the
A.cylinder compression pressure may not be high enough
B.cylinder compression temperature may be too high
C.fuel oil injection pressure may not be high enough
D.scavenge and purge process is incomplete
第2题：
control fuel injection time more precisely
control fuel injection rate more precisely
meet the environmental requirements
meet high engine speed requirements
第3题：
If the diesel engine fuel injection timing is changed to delay the start of injection until the pistons are at top dead center, the engine will_________.
A.backfire through the air intakes
B.develop less power under load
C.have high firing pressures
D.lift its cylinder relief valves
第4题：
governor malfunctions
fuel injection system malfunctions
high cylinder lube oil temperatures
low intake temperatures
第5题：
feel the high pressure fuel line
check the cylinder exhausts for white smoke frequently
check the cylinder exhaust temperature
isolate each cylinder and inspect the injector
第6题：
In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with ______.
A.low firing pressure
B.low exhaust temperature
C.mechanical knock in each cylinder
D.fuel knock in each cylinder
第7题：
improper adjustment
contaminated fuel
kinked fuel lines
excessive engine vibration
第8题：
If you suspect a diesel engine is misfiring due to air leakage into the fuel system, you should begin looking for the leak at the
A.fuel line connections to the cylinder injection valves
B.gasket surfaces of the fuel oil filters
C.discharge fittings of the fuel injector pumps
D.suction side of the fuel oil transfer pump
第9题：
excessively late injection timing for each cylinder
incorrectly adjusted intake valve timing
incorrectly adjusted fuel injector
incorrectly adjusted intake valve clearance
第10题：
increased horsepower
reduced efficiency
increased heat loss
lower cylinder pressures