海船船员考试
单选题As for a diesel engine, lack of combustion air may be due to （）.A fouling turbineB fuel pump faultsC lubrication failureD excessive cooling
题目
fouling turbine
fuel pump faults
lubrication failure
excessive cooling
相似问题和答案
第1题：
How does combustion air enter the cylinder of a two-cycle diesel engine ? Through _______．
A.Cylinder head valves
B.Ports
C.Turbo chargers
D.Bleeder valves
第2题：
a cracked liner
burning lube oil
an overloaded engine
insufficient combustion air
第3题：
If the engine does not start on air, it may be due to
A.low compression of the fuel pumps
B.incorrect timing of fuel pumps
C.the starting air valves stuck
D.air-locks in fuel oil pipeline
第4题：
low air charge temperature
high cranking speed
excessive fuel dilution of lube oil
high compression pressure
第5题：
high compression pressure
low intake air temperature
low exhaust pressure
high scavenge air temperature
第6题：
water in the fuel
insufficient fuel for combustion
clogged air intake passages
burning lubricating oil
第7题：
a shortened ignition delay period
a lean fuel/air mixture
excess fuel in the combustion chamber
rapid vaporization of injected fuel droplets
第8题：
If the engine does start on air, but combustion does not immediately begin, the cause may be _____.
A.failure of the fuel pumps
B.starting air pressure too low
C.stop valve in air line closed
D.the turning gear still engaged
第9题：
increase in starting air pressure
increase in lube oil viscosity
compression expansion device
jacket water heater
第10题：
quantity of air it takes in and retains in the cylinders during a given time period
proportion of trapped air that is utilized in the combustion process
thermodynamic efficiency of the engine cycle
all of the above