IC Engine Practice Test 6

1. The ___________ extends for about 13º, movement of the crank.

2. The flame propagation velocities range from _____________

3. If the engine is operating with richer mixtures the optimum spark timing must be _____________

4. The complete combustion of ____________ mixture, and droplet combustion result in the smoke and odour.

5. The bearing friction includes the friction due to the main bearing connecting rod bearing and other bearings.

6. A pre-combustion chamber gives a shorter delay compared to an open type of combustion chamber.

7. The time for which delay period occurs decreases with ___________ in engine speed.

8. ___________ is the time immediately following injection of the fuel during which the ignition process is being initiated and the pressure does not rise beyond the value it would have due to compression of air.

9. Blow by losses are reduced as the engine speed is ____________

10. ____________ consists of randomly dispersed vortices of different sizes which become superimposed into the air and petrol mixture flow stream.