题目内容
（请给出正确答案）
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
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更多“High firing pressures and low …”相关的问题
A．low firing pressure and low exhaust temperatures
B．low firing pressure and normal exhaust temperatures
C．high firing pressure and low exhaust temperatures
D．high firing pressure and high exhaust temperature
A.① and ②
B.② and ③
C.① ② and ③
An indication of a diesel engine air intake being partially clogged, is _____.
A.low firing pressure and low exhaust temperatures
B.low firing pressure and normal exhaust temperatures
C.high firing pressure and low exhaust temperatures
D.high firing pressure and high exhaust temperatures
A.decreased piston to cylinder head clearance
B.increased exhaust system back pressure
C.early fuel injection timing
D.low scavenge air temperature
Leaky exhaust valve will result in which of the following？ (1) high exhaust temperature; (2) low compression pressure; (3) low firing pressure.
A.(1) and (2)
B.(1) only
C.(2) only
D.(1), (2) and (3)
If some of the cylinders are not firing, the ones affected may be determined by watching
A.the exhaust temperature
B.the exhaust pressure
C.the governor
D.the fuel flow meter
A.insufficient fuel supply
B.faulty governor
C.high exhaust back pressure
D.all of the above may cause this problem
An increase in crankcase pressure generally indicates________.
A.worn connecting rod bearings
B.worn engine cylinder liners
C.high cylinder firing pressure
D.stuck spring-loaded manhole covers
A.the bad smoke
B.the smoky exhaust
C.the exhaust temperature
D.the peak pressure
A、low position power
B、high position power
C、high task structure
D、low task structure
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