A.a higher cetane number of fuel oil
B.the diesel fuel used having a high viscosity
C.mechanical rigidity in the lube pump mechanism
D.a decrease rigidity in the fuel pump delivery pressure
您可能感兴趣的试卷
你可能感兴趣的试题
A.Higher compression ratios create higher temperature
B.Higher temperatures create higher compression ratios
C.low temperatures create higher compression ratios
D.Higher compression ratios create low temperatures
A.torque wrench
B.monkey wrench
C.pipe wrench
D.slugging wrench
A.Electric
B.Hydraulic
C.Air
D.All of the above
A.build up the piston crown by metal spraying
B.build up the cylinder head by metal spraying
C.insert shims between the crankpin bearing box and the connecting rod foot
D.install a thinner head gasket
A.cetane number of 55
B.cetane number of 45
C.octane number of 55
D.octane number of 45
A.increase
B.decrease
C.remain the same
D.increase on compression decrease on expansion
A.ignition quality of the fuel
B.high heating value of the fuel
C.amount of carbon residue after combustion
D.internal flow resistance in the injectors
A.has little or no internal friction
B.has a lower effective compression ratio
C.operates with scavenge air under a positive pressure
D.operates without energy absorbing intake and exhaust strokes
A.Decreased connecting rod bearing clearance
B.Increased connecting rod bearing clearance
C.Decreased compression ratio
D.Increased compression ratio
A.less fuel will enter the cylinder
B.higher the cylinder combustion temperature
C.more complete the fuel combustion
D.more rapid the rise in combustion pressure
最新试题
Diesel engine air start system check valves are opened by ()
Which one is NOT the ‘clear grounds’ for a more detailed inspection?()
The cetane rating of diesel fuel is an indication of the ()
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?()
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a()
During the diesel engine running, the water level of F.W expansion tank should normally kept in the () level of glass tube.
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?()
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is()
The condensers located in various stages of a flash evaporator are cooled by()
The ISPS Code consists of a mandatory section-Part A, which shows()