Lubrication importance

 

Lubricants.

A substance (such as oil, grease, etc) capable of reducing friction between surfaces in mutual contact in engine, which ultimately reduces the heat and wear between contact surfaces.

Lubrication

the action of applying a substance such as oil, grease, etc to an engine or components so s to minimize friction and allow smooth moment.

Lubrication is essential to reduce friction and wear between the components in an engine.

Lubrication is an art of admitting a lubricant (oil, grease, etc) between two surface that are in contact and relative motion. The purpose of lubrication in an engine is to perform one or several of the following function.

1. To reduce friction and wear between the moving parts and thereby the energy loss and to increase the life of the engine.

2. To provide sealing section eg the lubricating oil helps the piston ring to maintain an effective seal against the high pressure gases in the cylinder for leaking out in to the crankcase.

3. To cool the surface by carrying away the heat generated in engine components.

4. To clean the surface by washing away carbon and metal particles caused by wear.

Lubrication of engine components

In reciprocating engine there are many surfaces in contact with each other and therefore they should be lubricated to reduce friction. The principle friction surfaces requiring lubrication in an internal combustion engine are.

1. Piston and cylinder. 

2. Crankshaft and their bearing.

3. Crankpin and their bearings.

4. Wristpin and their bearings.

5. Valve gear.

Published by Science Tube, September 08 2020.