types of lubrication system in ic engines pdf

To lubricate the timing gears and camshaft, the oil is led through a separate oil line from the oil gallery. The oil from the main gallery goes to the main bearings, after lubricating the main bearing, some of it goes back to the sump, some is splattered to lubricate the cylinder walls and the rest goes from a hole into the crank pin.įrom the crankpin, it goes through a hole in the connecting rod web to the piston pin, where it lubricates the piston rings. When the engine runs, the dipper dips in the oil once in every revolution of the crankshaft and cause the oil to splash on the cylinder walls. A scoop or dipper is made in the lowest part of the connecting rod. In these types of lubrication system, the lubricating oil accumulates in an oil trough or sump. Thus is the main disadvantages of this system. If the engine is allowed to remain unused for a considerable time, the lubricating oil separates off from petrol and starts to clogging of passages in the carburettor, occurring in engine start problems. The piston rings, cylinder walls, piston pins, etc. When fuel enters the crank chamber during engine operation, oil particles go down into the bearing surfaces and lubricate them. For lubrication purpose, it does not have any separate part like an oil pump.īut the lubricating oil is added to the petrol itself during filling in the petrol tank of the vehicle in a specified ratio. It is the simplest form of the lubricating system. In these types of the lubrication system, it is commonly used in the two-stroke petrol engines such as scooters and motorcycles.

Types of Lubrication Systemįollowing are the 6 main types of lubrication system:

Improper lubrication of the engine will cause serious trouble such as scored cylinders, dirty spark plugs, worn or burned-out bearings, misfiring cylinders, stuck piston rings, engine deposits and sludge and excessive fuel consumption. Lubrication must be done properly and the right type of lubrication should be used. lubrication of all moving parts (Other than nylon, rubber bushed or pre-lubricated components) is essential to reduce friction, wear and to prevent seizure. To supply lubrication oil between the moving parts is simply termed as lubrication. Lubrication is essentially required in motor vehicle maintenance.

Types of lubrication system in ic engines pdf