What is engine super-knock? Discuss reasons for super-knock and method of characterization and mitigation of super-knock.  Three possible positions of the spark plug (black circle) in a spark ignition...

What is engine super-knock? Discuss reasons for super-knock and method of

characterization and mitigation of super-knock.

 Three possible positions of the spark plug (black circle) in a spark ignition

(SI) engine are shown Fig. P9.1. Identify the intake and exhaust valves in the

configuration shown. Arrange three configurations (A, B, and C) in ascending

order for octane number (ON) of fuel required to run the SI engine in each

configuration, and justify your answer with suitable reasons.