5.2. Lubrication system
Fig. 4.31. Lubrication system: 1 – hydraulic pushers, 2 – oil channels for supply of oil on the valvate mechanism, 3 – the main oil channel from the engine block to a head of cylinders, 4 – a flange of an oil filter, 5 – the channel to an oil filter, 6 – the oil pump, 7 – the oil regulator of a natyazhitel of a chain of management
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The lubrication system of the engine (fig. 4.31) is intended for:
1. Lubricants of knots and units of the engine. Creation of an oil film between moving surfaces provides the minimum wear of surfaces (pistons and cylinders, radical bearings, the drive of valves and other knots).
2. Elimination of gaps between the piston, piston rings and the working surfaces of the cylinder.
3. Coolings of details, such as pistons, bearings of a bent shaft.
The oil pump gives oil under pressure to the relevant canals from where it comes for cleaning to an oil filter. At obstruction of the filter the drainage valve which with a certain pressure opens the auxiliary channel of circulation begins to work. The crude oil becomes the reason of bystry wear of bearings.
From the filter lubricant on openings in the block of cylinders gets to bearings of a bent shaft, rod, auxiliary shaft and the valvate mechanism in a head of cylinders.
Walls of cylinders and piston fingers are oiled, getting through rods. For cooling of pistons separate oil nozzles serve.