Which of the following factors can control detonation in spark ignition engines?
1. Increasing engine rpm
2. Advancing spark timing
3. Making fuel-air ratio very rich
1
1,2 and 3
2
1 and 2 only
3
2 and 3 only
4
1 and 3 only
Which of the following factors can control detonation in spark ignition engines?
1. Increasing engine rpm
2. Advancing spark timing
3. Making fuel-air ratio very rich