KR20130005685A

KR20130005685A - Oil filter bypass valve

Info

Publication number: KR20130005685A
Application number: KR1020110067242A
Authority: KR
Inventors: 염철준
Original assignee: 현대자동차주식회사
Priority date: 2011-07-07
Filing date: 2011-07-07
Publication date: 2013-01-16

Abstract

The present invention is further provided with a filtration member 10 as a bypass valve 6 coupled to the oil filter 5, the filtration member 10 is the engine of low viscosity, such as during the clogging of the oil filter 5 or in winter By filtering the foreign matter in the oil passing directly through the bypass valve 6 without passing through the oil filter 5 in the oil state, it is possible to eliminate the possibility of engine seizure by the foreign matter in the oil.

Description

Oil Filter Bypass Valve

The present invention relates to an oil filter, and more particularly, to a bypass valve capable of filtering foreign substances at the end.

In general, the oil filter filters the contaminants by injecting the engine oil, and then sends the clean engine oil back. Therefore, the oil filter is usually installed between the oil discharge path and the oil return path.

The oil filter has a high possibility of preventing oil circulation because the filter paper inside the filter is clogged due to the function of filtering the contaminant. Therefore, the oil filter is usually equipped with a bypass valve so that the oil filter is clogged. Will be replaced.

The bypass valve as described above is opened and closed depending on the size of the oil pressure acting, it is usually opened when the pressure difference applied to the bypass valve is more than 1.0bar ~ 1.5bar is discharged immediately without passing through the oil filter.

However, the oil passing through the bypass valve is not passed through the oil filter, so that foreign matters can be directly supplied to the engine without being filtered out. do.

In addition, when oil passes directly through the bypass valve without passing through the oil filter, not only when the oil filter is clogged but also when the external air temperature is low, such as in winter, the engine oil viscosity is reduced due to the low outside air temperature. It is caused.

In general, when the oil passes directly through the bypass valve, it is more frequently generated when the viscosity of the engine oil is lowered due to the low outside air temperature, such as in winter, when the oil filter is clogged. Even if there is no risk, there is a high risk of engine seizure caused by the foreign matter contained in the oil.

National Registration No. 20-0275165 (2002.04.30) relates to an oil filter bypass valve, see lines 17 to 27 on pages 1 and 2.

Accordingly, the present invention in view of the above point is to filter out the foreign matter in the oil that is bypassed even when the oil filter is clogged, especially during the start-up of the engine oil viscosity is low, the oil to the engine without going through the oil filter Even if it is supplied directly, it is an object to provide an oil filter bypass valve that eliminates the possibility of engine seizure by foreign matter.

The oil filter bypass valve of the present invention for achieving the above object is that when the pressure before and after passing through the oil filter for filtering the impurities in the oil after exiting the engine, the oil not passing through the oil filter is passed through A bypass valve capable of; A filtering member provided in the bypass valve to filter impurities in the oil;

And a control unit.

The filtration member is located in the extension insert portion protruding from the valve body having an opening and closing structure so as to fit into the inner space of the oil filter.

The filtration member is located in the inner space of the extension insert.

The filtration member is composed of a filter net having a mesh size to filter foreign matter of a size contained in the oil to cause engine ignition.

The predetermined pressure is at 1.0 to 1.5 bar.

The present invention can filter foreign substances in the oil discharged to the engine through the bypass valve through the bypass valve without the oil filter during start-up in the winter when the oil filter is clogged and the engine oil viscosity is low. The effect is to eliminate the possibility.

In addition, the present invention is implemented by the filter paper added to the bypass to remove the foreign matter in the oil has the effect that can prevent the engine failure (fail) even with a very simple configuration.

1 is a cross-sectional view of an oil filter having a bypass valve according to the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Since the exemplary embodiments of the present invention may be embodied in various different forms, one of ordinary skill in the art to which the present invention pertains may be described herein. It is not limited to the Example to make.

1 shows a cross-sectional configuration of an oil filter with a bypass valve according to the present embodiment.

As shown, the oil filter 5 is installed in the filter connecting end (2) connecting the oil inlet path (3) from which the oil comes from the engine block (1) and the oil discharge path (4) to the engine again, The bypass valve 6 is inserted into the oil filter 5 at a portion connected to the oil inflow path 3 so that oil which has not entered the oil filter 5 is collected.

The bypass valve (6) is provided opposite to the outlet through which the oil filtered through the oil filter (5) exits the oil discharge path (4).

The oil pressure at which the bypass valve 6 opens is about 1.0 to 1.5 bar.

Typically, the bypass valve 6 is fixed by forming an extension inserting portion 6a protruding from the valve body and inserting into the oil filter 5 using the extension inserting portion 6a.

In the present embodiment, the bypass valve 6 is positioned with a filtration member 10 into the inner space of the extension inserting portion 6a, and the oil entering the bypass valve 6 is extended through the filtration member 10. By exiting to the portion 6a, the filtering action by the filtration member 10 is realized.

The filtering member 10 may be applied to various materials, but in the present embodiment, the filtering net is applied, and the mesh size of the filtering net is contained in the engine oil to sufficiently filter out foreign substances having a size that may cause engine sintering. It is decided as much as possible.

Therefore, in the present embodiment, when the oil filter 5 is blocked at the position connecting the oil discharge path 4 into which the oil coming out of the oil inlet path 3 from the engine block 1 enters the engine, the oil inflow path ( The oil from 3) is filled through the oil filter 5 into the space of the filter connecting end 2 formed behind the oil filter 5 to form a predetermined pressure Pa.

The pressure Pa acts on the bypass valve 6 to open the passage of the bypass valve 6, and the bypass valve 6 with the passage opened opens the path of the internal space of the oil filter 5. After passing through the oil discharge path (4) acts.

However, the oil passing by the bypass valve 6 passes first through the filtration member 10 before passing through the extension insert 6a of the bypass valve 6, so that the oil passes through the filtration member 10. As it passes through, foreign matter can be filtered out.

Accordingly, even though the oil containing impurities does not pass through the oil filter 5, the foreign matter is filtered out through the filtration member 10 and then exits to the oil discharge path 4, without the action of the duck filter 5. The engine is supplied with clean oil filtered out of foreign matter, eliminating the possibility of engine seizure.

The operation effect by the filtration member 10 as described above can be implemented at the same time during start-up in the winter, which directly exits the bypass valve 6 without passing through the oil filter 5 due to the reduced oil viscosity, Accordingly, even in the winter when the oil flows directly to the bypass valve 6 more frequently than when the oil filter 5 is clogged, the possibility of engine seizure due to foreign matter in the oil may be eliminated or greatly alleviated. .

1: Engine Block 2: Filter Connection
3: oil inflow path 4: oil discharge path
5: filter 6: bypass valve
6a: extension insert 10: filtration member

Claims

A bypass valve through which the oil that has not passed through the oil filter may pass when the pressure before and after passing from the engine passes through the oil filter for filtering the impurities in the oil is greater than or equal to a certain level; A filtering member provided in the bypass valve to filter impurities in the oil;
Oil filter bypass valve, characterized in that configured to include.

The oil filter bypass valve according to claim 1, wherein the filtration member is positioned in an extension inserting portion protruding from a valve body having an opening and closing structure so as to be fitted into an inner space of the oil filter.

The oil filter bypass valve of claim 2, wherein the filtration member is positioned in an inner space of the extension insert.

4. The oil filter bypass valve according to claim 3, wherein the filtration member is a filter net having a mesh size capable of filtering foreign matter of a size contained in the oil to cause engine ignition.

The oil filter bypass valve according to claim 1, wherein the predetermined pressure is 1.0 to 1.5 bar.