单项选择题
Diesel engine air start system check valves are opened by （）
A.an air start cam
B.cylinder compression pressure
C.starting air pressure
D.valve springs
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相关考题
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单项选择题
For a diesel engine, individual cylinder performance is commonly determined by exhaust gas（）
A.chemical analysis
B.back pressure readings
C.pyrometer readings
D.infrared analysis -
单项选择题
Low compression pressure in a diesel engine may be the result of （）
A.insufficient fuel supply due to fuel pump valves sticking or leaking
B.excessive mechanical clearance between the piston crown and cylinder head
C.excessively worn fuel pump plunger
D.excessive exhaust back pressure -
单项选择题
Exhaust gas pyrometers are useful for（）
A.detecting faulty combustion in individual cylinders
B.adjusting fuel racks to maintain equal loading between cylinders
C.adjusting the load limit setting of the governor at idle conditions
D.calculating engine horsepower
