High firing pressures and a low exhaust temperature in a diesel engine may result from ().
A、decreased piston to cylinder head clearance
B、increased exhaust system back pressure
C、early fuel injection timing
D、low scavenge air temperature
A、decreased piston to cylinder head clearance
B、increased exhaust system back pressure
C、early fuel injection timing
D、low scavenge air temperature
A、high exhaust temperature and low firing pressure B、high exhaust temperature and high firing pressure C、low exhaust temperature and low firing pressure D、low exhaust temperature and high firing pressure
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、Low compression pressure and high exhaust temperature B、Low firing pressure and high exhaust temperature C、Low compression pressure and low exhaust temperature D、Low firing pressure and low exhaust temperature
A、Loss of engine power and high exhaust temperatures B、Higher than normal firing pressure and low exhaust temperatures C、High fuel consumption and high exhaust temperatures D、Lower than normal compression pressure and high exhaust temperature
A、A.increase scavenge air pressure B、B.reduce fuel booster pump pressure C、C.adjust the fuel rack D、D.retard fuel injector timing
A、directly from high pressure toward low pressure B、directly from low pressure toward high pressure C、from high pressure toward low pressure deflected by the earth's rotation D、from low pressure toward high pressure deflected by the earth's rotation
A、high lube oil viscosity B、increased lube oil consumption C、low lube oil temperatures D、high firing pressures
A、A.worn connecting rod bearings B、B.worn engine cylinder liners C、C.high cylinder firing pressure D、D.stuck spring-loaded manhole covers