Originally Posted by abhijeet080808

Thanks for the awesome explanation OF. Cleared a lot of my doubts.

One question -

What are the factors that determines the ignition timings in a 4 stroke engine? How does the following factors affect timings -

1. Compression Ratio
2. Air-Fuel Ratio
3. Altitude
4. Temperature
5. Valve Timing

And any other factors you may think off!!