Pressure regulating valve device on engine gear chamber cover
By installing a pressure regulating valve device on the engine gear chamber cover, and utilizing the cooperation of a one-way valve and a spring, the problems of leakage and component damage caused by excessive oil pressure are solved, thus achieving stability and safety of oil pressure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-11
- Publication Date
- 2026-04-10
AI Technical Summary
How to set up a pressure regulating device to keep the engine oil pressure within a certain range and avoid leakage and component damage caused by excessive oil pressure.
A pressure regulating valve device is installed on the engine gear chamber cover. Through the cooperation of a one-way valve and a spring, the one-way valve is activated to release pressure when the oil pressure is too high, so as to keep the oil pressure within the limit. The cover plate separates the upper and lower oil chambers and the pressure regulating hole connects the pressure relief channel.
It effectively stabilizes oil pressure, prevents leakage and component damage caused by excessive oil pressure, and ensures that the oil pressure remains stable within a predetermined range.
Smart Images
Figure CN224107327U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to internal combustion engine, specifically diesel engine. BACKGROUND
[0002] The oil pressure is guaranteeing the normal operation of the lubricating system inside the engine, and the excessively high oil pressure can cause the leakage of the engine and the damage of components such as oil seal and filter. UTILITY MODEL CONTENTS
[0003] The utility model solves the technical problem: how to set the pressure regulating device, so that the oil pressure of the engine is in a certain range.
[0004] To solve the above technical problem, the utility model provides the following technical scheme: a pressure regulating valve device on the engine gear chamber cover, the engine gear chamber cover sets the oil inlet and outlet end face chamber, the first oil inlet, oil outlet and second oil inlet are equipped in the oil inlet and outlet end face chamber, the first oil inlet communicates the filter, the oil outlet communicates the engine gear chamber, the second oil inlet communicates the engine gear chamber, the pressure regulating valve device includes the cover plate and check valve, the cover plate is installed on the oil inlet and outlet end face chamber, and the oil inlet and outlet end face chamber is divided into upper oil cavity and lower oil cavity, the first oil inlet and oil outlet are located in the upper oil cavity, and the second oil inlet is located in the lower oil cavity, and the pressure regulating hole is arranged in the lower oil cavity, the pressure regulating hole communicates the pressure relief channel, and the check valve is fitted in the pressure regulating hole.
[0005] The oil pump is arranged at the bottom of the engine shell, and the oil flows under the action of the oil pump.The oil is filtered through the filter installed on the engine, and then enters the upper oil cavity through the first oil inlet, and then enters the engine gear chamber through the oil outlet.The oil in the engine gear chamber enters the lower oil cavity through the second oil inlet.If the oil pressure in the engine gear chamber is too high, the oil in the lower oil cavity acts on the check valve, so that the check valve moves, the pressure regulating hole and the pressure relief channel are communicated, the oil is relieved, and flows back to the bottom of the engine shell.Under the action of the pressure regulating valve device, the oil pressure cannot rise, and the oil pressure is stable at the limit.
[0006] The cover plate is provided with an oil flow channel, the oil flow channel communicates the second oil inlet and the pressure regulating hole, and the check valve is pressed on the oil flow channel of the cover plate under the action of the spring, so as to close the oil flow channel.When the oil pressure is normal, the spring force cannot be overcome, and the state of the check valve closing the oil flow channel is maintained.When the oil pressure is too high, the spring force is overcome, and the check valve is displaced along the pressure regulating hole, and when the oil flow channel and the pressure relief channel are communicated, the oil is relieved.
[0007] The outer diameter of the one-way valve is equal to the inner diameter of the pressure regulating hole, the one-way valve is hollow, the end close to the spring is closed, the end away from the spring is open, and the side wall of the one-way valve is provided with a pressure relief hole. The one-way valve of the utility model adopts the structure of one end open and hollow, thus, the engine oil can enter the hollow cavity of the one-way valve, the one-way valve expands outward, the outer side wall of the one-way valve is attached to the pressure regulating hole, and leakage is prevented. When the engine oil pressure is too high, the spring force is overcome, the one-way valve is displaced along the pressure regulating hole, and when the pressure relief hole is communicated with the pressure relief channel, the engine oil is relieved.
[0008] The closed end of the one-way valve is provided with a step, one end of the spring is abutted against the step, and the other end of the spring is abutted against one end of the pressure regulating hole.
[0009] The end close to the spring of the one-way valve is closed by a closing piece.
[0010] The middle part of the oil inlet and outlet end face cavity is provided with a threaded hole, and the cover plate is installed on the oil inlet and outlet end face cavity through bolts.
[0011] The pressure regulating valve device of the utility model can ensure that the main oil passage pressure is maintained within a predetermined range when the engine oil pressure increases. BRIEF DESCRIPTION OF DRAWINGS
[0012] The utility model will be further described in connection with the drawings:
[0013] Figure 1 It is a schematic view of the engine gear chamber cover;
[0014] Figure 2 It is Figure 1 It is a middle A-A sectional view;
[0015] Figure 3 It is Figure 1 It is a middle B-B sectional view;
[0016] Figure 4 It is a schematic view of the one-way valve 4.
[0017] Explanation of symbols in the drawings:
[0018] 1, engine gear chamber cover; 2, cover plate; 3, bolt; 4, one-way valve; 41, pressure relief hole; 42, step; 43, closing piece; 5, spring; 6, first oil inlet; 7, oil outlet; 8, second oil inlet. DETAILED DESCRIPTION
[0019] In combination Figures 1 to 3A pressure regulating valve device for an engine gear chamber cover, the engine gear chamber cover 1 is provided with an oil inlet-outlet end face chamber, the oil inlet-outlet end face chamber is provided with a first oil inlet 6, an oil outlet 7 and a second oil inlet 8, the first oil inlet is communicated with a filter, the oil outlet is communicated with an engine gear chamber, and the second oil inlet is communicated with the engine gear chamber, the pressure regulating valve device comprises a cover plate 2 and a one-way valve 4, the cover plate is installed on the oil inlet-outlet end face chamber, and the oil inlet-outlet end face chamber is divided into an upper oil chamber and a lower oil chamber, the first oil inlet and the oil outlet are located in the upper oil chamber, and the second oil inlet is located in the lower oil chamber, a pressure regulating hole is arranged in the lower oil chamber, the pressure regulating hole is communicated with a pressure relief channel, and the one-way valve is fitted in the pressure regulating hole.
[0020] The cover plate 2 is provided with an oil flow channel, the oil flow channel is communicated with the second oil inlet 8 and the pressure regulating hole, and the one-way valve is abutted on the oil flow channel of the cover plate under the action of the spring 5 to close the oil flow channel.
[0021] As Figure 4 The outer diameter of the one-way valve 4 is equal to the inner diameter of the pressure regulating hole, the one-way valve is hollow, one end close to the spring 5 is closed, the other end away from the spring is opened, and the pressure relief hole 41 is arranged on the side wall of the one-way valve.
[0022] The closed end of the one-way valve is provided with a step 42, one end of the spring 5 is abutted on the step, and the other end of the spring is abutted on one end of the pressure regulating hole.
[0023] The one-way valve 4 is closed by a closing piece 43 close to the spring 5.
[0024] A threaded hole is arranged in the middle of the oil inlet-outlet end face chamber, and the cover plate 2 is installed on the oil inlet-outlet end face chamber through the bolt 3.
[0025] The oil pump is arranged at the bottom of the engine shell, and the oil flows under the action of the oil pump. The oil is filtered through the filter arranged on the engine, and then enters the upper oil chamber through the first oil inlet 6, and then enters the engine gear chamber through the oil outlet 7. The oil in the engine gear chamber enters the lower oil chamber through the second oil inlet 8. If the oil pressure in the engine gear chamber is too high, the oil in the lower oil chamber acts on the one-way valve 4 to make the one-way valve act, the pressure regulating hole is communicated with the pressure relief channel, the oil is relieved, and flows back to the bottom of the engine shell. In this way, under the action of the pressure regulating valve device, the oil pressure cannot rise, and the oil pressure is stable at the limit value.
[0026] When the oil pressure is normal, the spring force of the spring 5 cannot be overcome, and the state that the one-way valve 4 closes the oil flow channel is maintained. When the oil pressure is too high, the spring force of the spring 5 is overcome, the one-way valve 4 is displaced along the pressure regulating hole, and when the oil flow channel is communicated with the pressure relief channel, the oil is relieved.
[0027] The one-way valve 4 is of open one end and hollow structure, so that the engine oil can enter the hollow cavity of the one-way valve 4, the one-way valve expands outward, the outer side wall of the one-way valve is attached to the pressure regulating hole, and leakage is prevented. When the engine oil pressure is too high, the spring force of the spring 5 is overcome, the one-way valve is displaced along the pressure regulating hole, and the engine oil is released when the pressure release hole 41 is communicated with the pressure release channel.
[0028] The above is only a preferred embodiment of the present application, and for those skilled in the art, according to the idea of the present application, the specific embodiment and application range can be changed, and the content of the specification should not be understood as a limitation of the present application.
Claims
1. A pressure regulating valve device on an engine gear chamber cover, the engine gear chamber cover (1) is provided with an inlet-outlet end face chamber, a first oil inlet (6), an oil outlet (7) and a second oil inlet (8) are arranged in the inlet-outlet end face chamber, the first oil inlet is communicated with a filter, the oil outlet is communicated with an engine gear chamber, and the second oil inlet is communicated with the engine gear chamber, characterized in that: The pressure regulating valve device comprises a cover plate (2) and a one-way valve (4), the cover plate is installed on the oil inlet and outlet end face chamber, and divides the oil inlet and outlet end face chamber into an upper oil chamber and a lower oil chamber, a first oil inlet and an oil outlet are located in the upper oil chamber, a second oil inlet is located in the lower oil chamber, a pressure regulating hole is arranged in the lower oil chamber, the pressure regulating hole is communicated with a pressure relief channel, and the one-way valve is matched in the pressure regulating hole.
2. The pressure regulating valve arrangement on an engine gear chamber cover as set forth in claim 1, wherein: The cover plate (2) is provided with an oil flow channel, the oil flow channel is communicated with the second oil inlet (8) and the pressure regulating hole, and the one-way valve is abutted on the oil flow channel of the cover plate under the action of the spring (5) to close the oil flow channel.
3. The pressure regulating valve arrangement on an engine gear chamber cover as set forth in claim 2, wherein: The outer diameter of the one-way valve (4) is equal to the inner diameter of the pressure regulating hole, the one-way valve is hollow, one end close to the spring (5) is closed, and the other end away from the spring is opened, and the pressure relief hole (41) is arranged on the side wall of the one-way valve.
4. The pressure regulating valve arrangement on an engine gear chamber cover as set forth in claim 3, wherein: The closed end of the one-way valve is provided with a step (42), one end of the spring (5) is abutted on the step, and the other end of the spring is abutted on one end of the pressure regulating hole.
5. The pressure regulating valve arrangement on an engine gear chamber cover as set forth in claim 3, wherein: The end close to the spring (5) of the one-way valve (4) is closed by a closing piece (43).
6. The pressure regulating valve arrangement on an engine gear chamber cover as set forth in claim 1, wherein: The middle part of the oil inlet and outlet end face chamber is provided with a threaded hole, and the cover plate (2) is installed on the oil inlet and outlet end face chamber by the bolt (3).