A 3.2-liter SI engine is to be designed with bowl-in-piston combustion chambers. With a central spark plug and combustion at TDC, this gives a flame travel distance of B/4. The engine is to operate...

A 3.2-liter SI engine is to be designed with bowl-in-piston combustion chambers. With a central spark plug and combustion at TDC, this gives a flame travel distance of B/4. The engine is to operate with an average piston speed of 8 m/sec and a burn angle of 25° of engine crank rotation. Stroke and bore will be related by

Calculate:

(a) Average flame speed if the design is for an in-line four-cylinder engine. [m/sec]

(b) Average flame speed if the design is for a V8 engine. [m/sec]