Contents: Oil pump ↓ Oil filter ↓
The Y-series engines use a forced-pressure lubrication system with full-flow oil cleaning, which ensures reliable lubrication of moving parts. Oil from the sump through an oil receiver with a mesh filter with the help of an oil pump after passing the main filter is pumped through various oil channels in the crankshaft and in the cylinder block. After performing the lubricating functions, the oil flows back into the sump under the force of gravity. A dipstick with divisions is used to monitor the oil level in the crankcase. In engines, the oil pump is attached to the bottom of the cylinder block.
Oil pump
The oil pump takes oil from the sump and delivers it under pressure to various engine parts. An oil receiver with a mesh filter is installed in front of the oil pump inlet pipe and is designed to trap contaminants. The oil pump has gears (rotors) with internal engagement located in the pump body.
Pressure reducing valve (oil pressure regulator) At high engine crankshaft speeds, the oil pump is capable of delivering significantly more oil than is required to lubricate the rubbing parts. To prevent this, a pressure reducing valve is installed (oil pressure regulator), preventing excessive oil supply. If the oil supply is sufficient, the oil pressure regulator spring closes its valve and locks the bypass channel. But if the oil supply is excessive, the pressure it develops overcomes the spring force. The valve opens and excess oil flows through the bypass channel into the sump.
Oil filter
Oil filter - full-flow type with paper filter element and built-in bypass valve.
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The filter is mounted outside the engine to simplify replacement of the filter element. A bypass valve is installed before the filter element to reduce oil pressure in case of clogging of the filter element.