CONSTRUCTION
General
The oil filter assembly consists of an oil filter housing, a filter bypass valve, an oil filter element, a non-return valve, an oil cooler bypass valve, an oil cooler and a drain valve.
| *1 | Filter Bypass Valve | *2 | Oil Filter Housing |
| *3 | Oil Filter Element | *4 | Drain Valve |
| *5 | Non-return Valve | *6 | Oil Cooler Bypass Valve |
| *7 | Oil Cooler | - | - |
Filter Bypass Valve
When the difference in pressure before and after the filter exceeds the predetermined pressure while the filter is blocked or while it is difficult for oil to pass through the filter due to low engine oil temperature and high oil viscosity, the filter bypass valve opens and the engine oil bypasses the filter.
Oil Cooler Bypass Valve
When the oil pressure exceeds the predetermined pressure due to low engine oil temperature and high oil viscosity, the oil cooler bypass valve opens and the engine oil bypasses the oil cooler.
Non-return Valve
This valve prevents engine oil from returning from the oil filter when the engine has been stopped and prevents the filter from drying up. As a result, the supply of engine oil during engine restarts has been secured.
Drain Valve
When the filter is changed, the oil flows from the drain valve into a return duct and back to the oil pan sub-assembly. A plunger with a seal is located on the bottom of the oil filter element and seals the return line when the filter cap is closed. When the oil filter cap is opened for an oil change, the oil filter element attached to the oil filter cap also moves upward. The plunger with the seal is withdrawn from the return duct and the oil flows to the oil pan sub-assembly. The drain valve is integrated into the oil filter and is thus changed when the oil filter is replaced.
Oil Cooler
The oil cooler utilizes the temperature of the engine coolant to quickly heat up the engine oil while the engine warms up and then afterwards efficiently cools the oil.
| *a | Oil Flow | *b | Coolant Flow |