举一反三
- 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 spring
- In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve? A.Noise coming from that air starting valve B.Continuous operation of the starting air compressor C.Zero air pressure in the air starting system D.Overheated starting air pipe to the cylinder head
- The compressed air is admitted to each cylinder through a cam operated by starting air valve when the piston has just passed its （）.
- The pressure of pilot air is usually （） than that of starting air.
- The cylinder head starting valve of ME type diesel engine is controlled by . A: Mechanical air distributor B: solenoid valve controlled by electronic control system C: The main starting valve D: The camshaft
内容
- 0
The starting air system usually has （） to prevent starting if anything is not in order.
- 1
（） in what position the engine stops there will always be at least one of the cylinders with its starting air valve open to admit compressed air to start the engine.
- 2
The starting air system usually has （） to prevent starting if anything is not in order. A: stop valves B: interlocks C: non-return valves D: air vent
- 3
With supercharging a larger mass of air is supplied to the cylinder by blowing it in under pressure， which is the best means to （） of the engine.
- 4
In an engine with air inlet valve and exhaust valve on its cylinder heads the fresh air will enter into the cylinder （） and the gases exhaust （）， there being an adequate overlap between the inlet opening and the exhaust closing.