All places where metal parts slide against each other must be constantly supplied with oil. Such parts include, for example, pistons, cylinder sliding surfaces, crankshaft and camshaft bearings. Without lubrication, the engine would collapse within minutes.
To accomplish its task, the oil in the cylinder block flows through a system of pipes and fine holes and gets to where it is needed.
The oil pump plays an important role in oil circulation. The oil pump sucks engine oil from the sump through the oil pick-up tube and pumps it into the pipelines. Before this, the oil passes through the oil filter, which is installed in the main line. The filter filters out various contaminants such as soot, metal abrasion products and dust.
There is a safety valve on the discharge side of the pump. If the pressure is too high, this valve opens and some of the oil flows back into the oil pan.
Through the center line of the filter cartridge, the filtered oil flows directly into the pressure lubrication line. The pressure lubrication line has an oil pressure switch that warns the driver by means of an indicator on the instrument panel if the oil pressure is too low.
The oil circulation diagram shows that in addition to the crankshaft bearings, oil also lubricates a number of other parts: 1 - lubrication channel of the cylinder head, 2 - pressure line, 3 - oil spray for piston cooling, 4 - main oil filter, 5 - oil cooler
Change the oil filter regularly
The oil filter performs its functions only as long as it is not clogged. Therefore, the filter must be changed at every oil change. If the filter is not changed in a timely manner, the safety valve is activated. The valve opens and the engine oil bypasses the filter. This ensures that the engine is supplied with oil, but unfiltered oil causes a lot of wear on the bearing areas.
From the filter, oil passes through holes in the cylinder block to the lubrication points of the crankshaft and connecting rods. From the crankshaft plain bearings, oil is squeezed out into the cylinder head and to the bearing sections of the camshaft, as well as to the rocker arms of the valve drive. From there, the oil is drained through return channels into the oil pan, where it is sucked up again by the pump.
Visitor comments