ENGINE OIL CONSUMPTION-REVIEW TO CONTROL THE AUTOMOTIVE EXHAUST EMISSION

Abstract

Blow by means, “Leakage of gases from the engine cylinder into the crank-case because of unsatisfactory action of the position ringsâ€.

An engine is a prime mover with the help of which heat energy obtained from the fuel, is converted into mechanical energy. Internal Combustion Engine (I.C.) that engine which combustion takes place outside the engine. Piston means that the reciprocating part of the engine is directly moved by the exploding fuel air mixture. However, petrol supplied to the engine should be completely vaporized before actual combustion and it is possible when it is broken up to a fine spray, i.e. atomized and atomization process takes place normally in the inlet manifold. The complete combustion of fuel requires 15 parts by weight of air to mix with 1 part by weight of petrol is called air fuel ratio.

Piston rings are made of a high grade of cast iron, centrifugal cast and precision ground. Piston blow-by occurs when the cylinder wears down owing to high temperature. The rings are not able to seal both the compression and combustion pressure. Such a leakage past the piston to combustion chamber is known as piston blow-by. Oil and gases get past the piston.