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Questions and Answers
What is the purpose of the starting air valve?
What is the purpose of the starting air valve?
- To control the exhaust gas flow from the cylinder
- To allow compressed air to enter the cylinder and assist piston movement (correct)
- To regulate the fuel intake into the cylinder
- To release excess pressure from the cylinder
When does the starting air valve in the 4-stroke engine open?
When does the starting air valve in the 4-stroke engine open?
- The starting air valve opens just before the piston reaches top dead centre (TDC) on the compression stroke. (correct)
- During the exhaust stroke
- At the beginning of the compression stroke
- At top dead centre (TDC)
What happens if the starting air valve does not close at the right moment?
What happens if the starting air valve does not close at the right moment?
- The fuel combustion process is enhanced
- The piston movement becomes more efficient
- Compressed air escapes during the exhaust and induction strokes (correct)
- Exhaust gas is trapped in the cylinder
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