Seperate oil tubes carry oil to the bearing.įrom the bearing oil floats to the connecting rod through the oil hole between the connecting rod and crank shaft. The oil is forced under pressure to different parts of engine through oil tubes (or) oil holes. The lubricating oil is stored in a separate tank (in case of dry sump system) or in the sump (in case of wet sump system), from where an oil pump (gear pump) delivers the oil to the main oil gallery at a pressure of 2-4 kg/cm2 through an oil filter. The pressure of oil is increased by the punp. Pressure System: In this system of lubrication, the engine parts are lubricated under pressure feed. the oil from the sump is delivered to the oil filter. the simple diagram of pressure lubrication system In this system lubrication oil is applied to the engine parts under pressure using a pressure pump. The splashed oil settle on the engine parts and then falls into the sump. The lubricating oil is splashed to the piston, cylinder, small & big end of connecting rod, main bearing and can shaft bearing. When every time the piston reaches bottom dead center (BDC) the scoop dip into the sump and carries the lubricating oil. scoop are attached to the big end of connecting rod. The simple sketch of splash lubriction system is lubricating oil is filled in the sump. In this system a big oil sump is provided at the base of crank case.From the sump the oil is pumped to different parts of the engine.The main types of wet sump lubrication system are More oil makes excess smoke in the exhaust.If oil is less there is chance for seizure of engine.Weight of engine is reduced by avoiding separate lubricating system.No maintenance cost for lubriction system. the monitoring of the health of the lubrication system using a PHM approach and currently made by SNECMA on its engines can be improved and how it can be done.Separate lubricating system is not needed.the optimum fuel -oil ratio used is 50:1. The fuel -oil ratio used is important for good performance. Petrol gets evaporated and the oil lubricates the main parts of the cylinder. The oil and fuel mixture is inducted through the carburettor. The lubrications oil (2 to 3 percent) is mixed with petrol in the fuel tank.
This type of lubrication is used for two stroke cycle engines. The lubrication system is classified into THE ENGINE PARTS THAT REQIRE FREQUENT LUBRICATION ARE To reduce the noise created by the moving parts.To minimise the power lost due to friction.To reduce the corrosion and carbon deposits.To reduce the friction between moving parts.so, lubricantion is necessary for an IC engine. In an IC engine, parts moving rub each other causing wear and tear and reduces the power almost. Lubrication is the process of applying the lubricant between the surfaces of contact of two moving parts.