leaking exhaust valves
an overloaded cylinder
a clogged injector nozzle
all of the above
第1题:
The closing of the exhaust valves used on a modern, large, low-speed, main propulsion diesel engine may be directly provided by_______.
A.large conical springs
B.compressed air pressure
C.hydraulic pressure
D.exhaust gas pressure
第2题:
cylinders
exhaust valves
pistons
fuel valves
第3题:
Overspeed of the diesel engine driving an electric generator could cause ______.
A.low voltage trip
B.reverse power trip
C.damage to windings
D.excessive exhaust temperatures
第4题:
over-speeding of the engine
failure of the engine to shut down
no effect of engine mounting bolts
high exhaust temperatures
第5题:
a cracked liner
burning lube oil
an overloaded engine
insufficient combustion air
第6题:
A bypass line provided around a waste heat auxiliary boiler in a diesel engine exhaust system, may be used to avoid boiler ______.
A.corrosion at low engine loads
B.erosion at high engine loads
C.overload at high engine loads
D.scaling at all exhaust temperatures
第7题:
to be kept
logged
changed
has remained
第8题:
High firing pressures and low exhaust temperature in a diesel engine may resultfrom( ).
A.decreased piston to cylinder head clearance
B.increased exhaust system back pressure
C.early fuel injection timing
D.low scavenge air temperature
第9题:
performance
horsepower output
fuel consumption
scavenge effect
第10题:
carbon buildup in the exhaust manifold
overcooling of the exhaust manifold
eroded muffler baffle plates
high injection pressure