Skip to main content

Factors affecting period of opening of starting air valves

1. firing interval = ( No of degrees in engine cycle/number of cylinder)
2. Valve must close before exhaust valve opens(no point in blowing away high pressure air to exhaust).

3. Each cylinder starting air valves must open after piston passing the firing dead center for positive starting in required direction.
Labels:

Comments

Post a Comment

Popular posts from this blog

Why atomisation test should not be done in slide type fuel valves

Since very small needle lift is obtained in the test equipment result in an unequal pressure distribution in the cut off shaft resulting in a hard contact in a small area along with high frequency oscillations, low lubricity of test oil will increase the chance of seizure. Full lift and high lubricity of heavy oil eliminates this risk  of seizure during normal operation.( Always open and clean slide type valves before testing as cold sticky heavy oil along with small clearances can cause restriction in the movement of the spindle).
Post a Comment
Read more