How does plastic oil filter cover work?- Taizhou Kelong Plastic Mould Co., Ltd.

In fact, the working principle of the plastic oil filter cover is not complicated. During the operation of the engine, with the operation of the oil pump, the oil with impurities continuously enters the oil filter from the oil inlet on the oil filter base plate assembly. , and then pass through the check valve to the outside of the filter paper to wait for filtration.

Under the action of pressure, the oil continuously passes through the filter paper and enters the center tube, while the impurities in the oil remain on the filter paper.

The oil entering the center pipe enters the engine lubrication system from the oil outlet in the middle of the bottom plate of the oil filter to participate in the lubrication.

There are two key components here: the bypass valve and the check valve.

Normally, the bypass valve is closed, but in special cases the bypass valve will be opened to ensure the normal supply of oil:

1. When the filter exceeds the replacement cycle and the filter element is seriously blocked.

2. When the oil is very viscous (cold start, low temperature outside).

Although the oil flowing through at this time is not filtered, the damage caused by the engine without oil lubrication is much less.

When the vehicle stops running, the oil inlet check valve is closed to ensure that the oil in the oil filter and subsequent lubrication system is not emptied, and to ensure that the required oil pressure is established as soon as possible when the engine is restarted to avoid dry friction.