Electromagnetic valve mounting structure for engine valve system

Abstract

The utility model discloses an electromagnetic valve mounting structure for an engine valve system, which comprises a seat body, a connecting block arranged on the front side of the seat body and a rocker arm shaft, a first mounting hole used for mounting an electromagnetic valve is arranged on the seat body, and an arc-shaped mounting surface matched with the peripheral surface of the rocker arm shaft is arranged on the rear side surface of the seat body. A first inlet and a first outlet which are communicated to the first mounting hole and used for engine oil to flow are formed in the mounting surface, and a second inlet corresponding to the first inlet, a second outlet corresponding to the first outlet and a second mounting hole corresponding to the first mounting hole are formed in the circumferential surface of the rocker arm shaft; the mounting face is attached to the outer circumferential face of the rocker arm shaft in a sealed mode. According to the utility model, an original complex exposed oil way needing pipeline arrangement is omitted, and the structure of a valve system is greatly simplified.

Description

Technical Field

[0001] This utility model belongs to the field of engine valve systems, and specifically relates to a solenoid valve mounting structure for engine valve systems. Background Technology

[0002] With the development of diesel engine technology, many technologies require rocker arms for implementation, such as cylinder braking, cylinder deactivation, and variable valve timing. All of these technologies are generally hydraulically driven by the engine oil, and their activation and deactivation are controlled by opening and closing the oil circuit. The opening and closing of the oil circuit is typically controlled by a solenoid valve. Solenoid valves have complex layouts, requiring complex oil circuit designs and even additional parts, thus increasing costs. Summary of the Invention

[0003] The purpose of this invention is to provide a solenoid valve mounting structure for an engine valve system, which eliminates the need for complex structures such as oil supply lines, resulting in a compact structure and lower cost.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a solenoid valve mounting structure for an engine valve system, comprising a base, a connecting block disposed on the front side of the base, and a rocker arm shaft. The base is provided with a first mounting hole for mounting the solenoid valve. The rear side of the base is provided with an arc-shaped mounting surface that matches the circumferential surface of the rocker arm shaft. The mounting surface is provided with a first inlet and a first outlet that communicate with the first mounting hole for supplying oil flow. The circumferential surface of the rocker arm shaft is provided with a second inlet corresponding to the first inlet, a second outlet corresponding to the first outlet, and a second mounting hole corresponding to the first mounting hole. The mounting surface is sealed and fitted to the outer circumferential surface of the rocker arm shaft.

[0005] In another embodiment, a first inlet groove is provided on the mounting surface around the first inlet to cover the first inlet. The first inlet groove creates an oil storage area with low oil pressure around the first inlet, which can accumulate some impurities, seal the first inlet, and provide a certain deviation margin for installation, thus reducing the installation difficulty.

[0006] In another embodiment, the first inlet groove extends upward from the first inlet, which can ensure that oil storage areas with low oil pressure are formed above and below the first inlet, further improving the sealing effect between the mounting surface and the outer peripheral surface of the rocker arm shaft.

[0007] In another embodiment, the first mounting hole is located above or diagonally above the first inlet, and the first inlet also extends upward or diagonally upward, which can further allow any impurities that may appear to accumulate in the first inlet groove.

[0008] In another embodiment, a first outlet groove is provided on the mounting surface around the first outlet to cover the first outlet. The first outlet groove creates an oil storage area with low oil pressure around the first outlet, which can accumulate some impurities, seal the first outlet, and provide a certain deviation margin for installation, thus reducing the installation difficulty.

[0009] In another embodiment, the first outlet groove extends upward from the first outlet, which can ensure that oil storage areas with low oil pressure are formed above and below the first outlet, further improving the sealing effect between the mounting surface and the outer peripheral surface of the rocker arm shaft.

[0010] In another embodiment, the first mounting hole is located above or diagonally above the first outlet, and the first outlet also extends upward or diagonally upward, which can further allow any impurities that may appear to accumulate in the first outlet groove.

[0011] In another embodiment, a third mounting hole extending through to the mounting surface is provided on the upper end face of the rear end portion of the seat body, and the seat body is fixedly connected to the rocker arm shaft by a bolt assembly passing through the second mounting hole and the third mounting hole.

[0012] In another embodiment, the line connecting the rear and front sides of the seat is perpendicular to and parallel to the lower end face of the seat in a left-right direction, and the mounting surface extends to the lower end face of the seat.

[0013] In another embodiment, the projection of the mounting surface onto the left side of the seat body is a first arc-shaped line segment, and the perpendicular bisector of the line connecting the two endpoints of the first arc-shaped line segment extends downward and backward. That is, the rear end portion of the seat body covers the circumferential surface of the rocker arm shaft. This arrangement can reduce the overall material usage of the seat body, reduce the overall space occupied by the solenoid valve mounting mechanism, and facilitate the arrangement of the valve system.

[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: In this utility model, the engine oil enters the first inlet from the second inlet, then flows into the engine oil inlet of the solenoid valve and flows out from the engine oil outlet of the solenoid valve to the first outlet, and finally flows out from the second outlet. The solenoid valve controls the opening and closing of the first inlet and the first outlet. The engine oil delivery pipeline is set on the seat and rocker arm shaft, eliminating the original complex exposed oil circuit that requires pipeline layout, and greatly simplifying the structure of the valve system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of the base and connecting block in this utility model;

[0018] Figure 4 This is a structural schematic diagram of the base and connecting block from another angle in this utility model;

[0019] Figure 5 This is a structural schematic diagram of the seat and connecting block from another angle in this utility model. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0021] like Figure 1-2 As shown, the mounting structure for the solenoid valve of the engine valve system includes a base 1, a connecting block 3 integrally formed with the base 1 and located on the front side of the base 1, and a rocker arm shaft 2. The rocker arm shaft 2 has a second inlet 21, a second outlet 22 and a second mounting hole 42 on its circumferential surface, and an oil supply channel 23 inside.

[0022] like Figure 3-5 As shown, the base 1 has a first mounting hole 41 for installing the solenoid valve 0. The rear side of the base 1 has an arc-shaped mounting surface 10 that matches the circumferential surface of the rocker arm shaft 2. The mounting surface 10 has a first inlet 11 and a first outlet 12 that connect to the first mounting hole 41 for oil flow. A second inlet 21 corresponds to the first inlet 11, and a second outlet 22 corresponds to the first outlet 12. The second mounting hole 42 corresponds to the third mounting hole 43. The mounting surface 10 is sealed and fitted against the outer circumferential surface of the rocker arm shaft 2. The connecting block 3 has a fourth mounting hole 44. The solenoid valve 0 is located in the first mounting hole 41 and fixed to the base 1 by a bolt assembly 6 in the fourth mounting hole 44.

[0023] Specifically:

[0024] A first inlet groove 13 is provided on the mounting surface 10 surrounding the first inlet 11, covering the first inlet 11. The first inlet groove 13 creates a low-pressure oil storage area around the first inlet 11, which can accumulate some impurities, seal the first inlet 11, and provide a certain deviation margin for installation, reducing installation difficulty. The first inlet groove 13 extends upward from the first inlet 11, ensuring that low-pressure oil storage areas are formed both above and below the first inlet 11, further improving the sealing effect between the mounting surface 10 and the outer peripheral surface of the rocker arm shaft 2. The first mounting hole 41 is located above or diagonally above the first inlet 11, and the first inlet 11 also extends upward or diagonally upward, which can further allow any impurities that may appear to accumulate in the first inlet groove 13. A first outlet groove 14 is provided on the mounting surface 10 surrounding the first outlet 12, covering the first outlet 12. The first outlet groove 14 creates a low-pressure oil storage area around the first outlet 12, which can accumulate some impurities, seal the first outlet 12, and provide a certain deviation margin for installation, reducing installation difficulty. The first outlet groove 14 extends upward from the first outlet 12, ensuring that low-pressure oil storage areas are formed both above and below the first outlet 12, further improving the sealing effect between the mounting surface 10 and the outer peripheral surface of the rocker arm shaft 2. The first mounting hole 41 is located above or diagonally above the first outlet 12, which also extends upward or diagonally upward, further allowing any impurities that may appear to accumulate in the first outlet groove 14. The projection of the mounting surface 10 on the left side of the seat 1 is a first arc-shaped line segment R1, and the perpendicular bisector L2 of the line L1 connecting the two endpoints of the first arc-shaped line segment extends downward and backward. That is, the rear end of the seat 1 covers the peripheral surface of the rocker arm shaft 2. This arrangement can reduce the overall material usage of the seat 1, reduce the overall space occupied by the solenoid valve mounting mechanism, and facilitate the arrangement of the valve system.

[0025] A third mounting hole 43 extending through to the mounting surface 10 is provided on the upper end face of the rear end of the seat body 1. The seat body 1 is fixedly connected to the rocker arm shaft 2 by bolt assembly 6 passing through the second mounting hole 42 and the third mounting hole 43. The direction perpendicular to the line connecting the rear and front sides of the seat body 1 and parallel to the lower end face of the seat body 1 is the left-right direction, and the mounting surface extends to the lower end face of the seat body 1.

[0026] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: In this utility model, the engine oil enters the first inlet 11 from the second inlet 21, then flows into the engine oil inlet of the solenoid valve and flows out from the engine oil outlet of the solenoid valve to the first outlet 12, and finally flows out from the second outlet 22. The solenoid valve controls the opening and closing of the first inlet 11 and the first outlet 12, and the engine oil delivery pipeline is set on the seat 1 and the rocker arm shaft 2, eliminating the original complex exposed oil circuit that requires pipeline layout, and greatly simplifying the structure of the valve system.

[0027] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A solenoid valve mounting structure for an engine valve system, comprising a base, a connecting block disposed on the front side of the base, and a rocker arm shaft, wherein the base is provided with a first mounting hole for mounting the solenoid valve, characterized in that: The rear side of the seat is provided with an arc-shaped mounting surface that matches the circumference of the rocker arm shaft. The mounting surface has a first inlet and a first outlet that are connected to the first mounting hole for oil flow. The circumference of the rocker arm shaft has a second inlet corresponding to the first inlet, a second outlet corresponding to the first outlet, and a second mounting hole corresponding to the first mounting hole. The mounting surface is sealed and fitted to the outer circumference of the rocker arm shaft.

2. The mounting structure for a solenoid valve in an engine valve system according to claim 1, characterized in that: A first inlet groove is provided on the mounting surface around the first inlet to cover the first inlet.

3. The mounting structure for a solenoid valve in an engine valve system according to claim 2, characterized in that: The first inlet groove extends upward from the first inlet.

4. The mounting structure for a solenoid valve in an engine valve system according to claim 3, characterized in that: The first mounting hole is located above or diagonally above the first inlet, and the first inlet also extends upward or diagonally upward.

5. The mounting structure for a solenoid valve in an engine valve system according to claim 1, characterized in that: A first outlet groove is provided on the mounting surface around the first outlet to cover the first outlet.

6. The mounting structure for a solenoid valve in an engine valve system according to claim 5, characterized in that: The first outlet groove extends upward from the first outlet.

7. The mounting structure for a solenoid valve in an engine valve system according to claim 6, characterized in that: The first mounting hole is located above or diagonally above the first outlet, and the first outlet also extends upward or diagonally upward.

8. The mounting structure for a solenoid valve in an engine valve system according to claim 1, characterized in that: A third mounting hole extending through to the mounting surface is provided on the upper end face of the rear end portion of the base.

9. The mounting structure for a solenoid valve in an engine valve system according to claim 1, characterized in that: The line connecting the rear and front sides of the seat is perpendicular to and parallel to the lower end face of the seat in the left-right direction, and the mounting surface extends to the lower end face of the seat.

10. The mounting structure for a solenoid valve in an engine valve system according to claim 9, characterized in that: The projection of the mounting surface onto the left side of the base body is a first arc-shaped line segment, and the perpendicular bisector of the line connecting the two endpoints of the first arc-shaped line segment extends downward and backward.

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