Question

For CI engines which fuels are preferred?

(a) Napthenes

(b) Paraffin

(c) Olefins

(d) Aromatics

The question was asked in a job interview.

This interesting question is from Conventional Fuels topic in division Nonconventional Engines, Conventional Energy Sources & Cooling System of Automobile Engineering

Answer 1

Right answer is (b) Paraffin

The explanation is: For CI engines paraffin fuels are preferred. The paraffin family consists of an open-chain structure with an attached branch. They are usually termed branched-chain paraffin.