Question

What are the primary objectives of lubrication system for engine?

Answer 1

The function of engine lubrication system is to provide clean oil at correct temperature and pressure to each engine component so that there is no wear on account of metal to metal contact. To lubricate the crankshaft the oil passes through the main bearings feed holes into the drilled passages in the crankshaft. The bearings of the piston-pin and cylinder walls get lubricated oil through the drilled passages in the connecting rod. Each camshaft bearing is fed by the main supply passage from a branch or tributary. The excess oil drains back to the sump. Oil cooler / oil radiator are also incorporated in larger engines to keep oil at the correct temperature.