举一反三
- 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.
- Four strokes—intake stroke, compression stroke, power stroke and exhaust stroke—complete one working cycle．
- One of the differences between a two-stroke engine and a four-stroke engine is,（） A: a two-stroke engine works without exhaust operation B: a two-stroke engine works without compression stroke C: a two-stroke engine works without expansion stroke D: a two-stroke engine works without suction operatio
- In<br/>a four-strokes diesel engine, the cycle requires four separate<br/>strokes of the piston, i.e. ____. A: suction B: compression C: expansion D: exhaust
- What is the purpose of the intake/exhaust valves in a diesel engine? （）
内容
- 0
A three-way thermostatic control valve regulates the diesel engine cooling water temperature by passing a portion of the water _____.
- 1
If a diesel engine is difficult to start and operates with the engine temperatures lower than normal， you should suspect that the （）.
- 2
Cooling the intake air supplied to a diesel engine will （）.
- 3
A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition， you should FIRST （）.
- 4
It is a verified fact that the higher ____<br/>of a two-stroke engine, the higher _____. A: the engine efficiency…the<br/>stroke/bore ratio B: the stroke/bore ratio…the<br/>engine efficiency C: the bore / stroke ratio…the<br/>engine efficiency D: the engine efficiency…the<br/>bore / stroke ratio