Question

The function of crankcase in two stroke petrol engines is _________

(a) It lower downs the temperature

(b) It forms a pressurised chamber for fuel air mixture

(c) It holds the exhaust gases after combustion

(d) None of the mentioned

I have been asked this question in an international level competition.

The doubt is from Automobile Engineering in chapter Internal Combustion Engines of Automobile Engineering

Answer 1

Correct answer is (b) It forms a pressurised chamber for fuel air mixture

The best explanation: The crankcase of a two stroke engine forms a pressurised air fuel mixture for combustion. It also prevents the atmospheric air or other particles from entering into the chamber.