During (), the starting air valves should be closed to prevent the engine from turning.
- Aoverhaul
- Brunning
- Cblowing down
- DAll of the above are correct
During (), the starting air valves should be closed to prevent the engine from turning.
1、When the starting air valve closes on
When the starting air valve closes on one cylinder, another starting air valve has () opened on another cylinder whose piston has just commenced its downward stroke.AjustBnearlyCmerelyDalready
2、The humidifier’s valve of air-conditio
The humidifier’s valve of air-condition should be (), when the temperature is lower than 0℃.AA.decreasedBB.increasedCC.fixedDD.closed
3、Valve overlap is the period during whi
Valve overlap is the period during which ().Athe inlet valve is openBthe exhaust valve is openCboth valves are closedDboth valves are ope
4、During the valve overlap period, the e
During the valve overlap period, the exhaust pressure of a turbochargers, four-stroke/cycle diesel engine must be less than the intake manifold ...
5、The starting air entering the cylinder
The starting air entering the cylinder begins when the piston()Ahas nearly come to the TDCBhas just past the TDCChas nearly come to the BDCDhas just past the BDC
6、Starting air valves are held firmly on
Starting air valves are held firmly on their seats by()Acam rollers on the camshaftBspring forceCair pressure on top of the valve differential pistonDair pressure on the bottom of the valve differential pisto