CN214403781U

CN214403781U - Engine oil pump mounting structure

Info

Publication number: CN214403781U
Application number: CN202120432888.1U
Authority: CN
Inventors: 王红林; 宁志坚; 李雨家; 徐坤; 宋兆哲; 高锋军; 杨军星
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-10-15
Anticipated expiration: 2031-02-26

Abstract

The utility model provides an engine oil pump mounting structure, including the cylinder head of locating the engine on, in order to bear the oil pump mount table of oil pump installation. This oil pump mount table integrated into one piece is on the cylinder cap to set up for the surface evagination of cylinder cap, moreover, be provided with additional strengthening between the surface of the lateral wall of oil pump mount table and cylinder cap. The utility model discloses an engine oil pump mounting structure helps strengthening the mounting structure rigidity of engine oil pump to do benefit to the improvement of oil pump modal characteristic.

Description

Engine oil pump mounting structure

Technical Field

The utility model relates to an oil pump configuration technical field of engine, in particular to engine oil pump mounting structure.

Background

In the modern society, people have higher and higher requirements on NVH (Noise, Vibration and Harshness) of automobiles, and when the automobile is used as an engine running at high frequency, accessories such as a high-pressure oil pump on the automobile are easy to cause Vibration Noise due to resonance, and obvious adverse effects can be generated on the NVH performance of the automobile.

The problem of vibration noise generated by the mode of a high-pressure oil pump of a fuel system is not negligible, the mode is low, resonance is easy to generate, large vibration noise of an engine is caused, and the comfort of an automobile is influenced. The existing high-pressure oil pump is generally fixed on an oil pump mounting seat through mounting bolts, the oil pump mounting seat is fixed on a cylinder cover through bolts, and a camshaft in a cylinder body drives the oil pump to operate, so that fuel is provided for an engine, and the normal work of the engine is ensured. The mode is the inherent vibration characteristic of a system of a mechanical structure, and in the existing oil pump mounting structure, the rigidity of the whole mounting structure is weak, so that the high-pressure oil pump has low mode and obvious low-frequency vibration.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to an engine oil pump mounting structure to enhance the rigidity of the mounting structure of the engine oil pump, thereby facilitating the improvement of the modal characteristics of the oil pump.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides an engine oil pump mounting structure, is including locating the oil pump mount table on the cylinder cap of engine, oil pump mount table integrated into one piece in on the cylinder cap, and for the surperficial evagination setting of cylinder cap, and in the lateral wall of oil pump mount table with be provided with additional strengthening between the surface of cylinder cap.

Further, the reinforcing structure comprises a plurality of reinforcing ribs integrally formed between the side wall of the oil pump mounting table and the surface of the cylinder cover.

Further, the oil pump mount table is close to the rear side of the side outer wall of cylinder cap, and is located the bight of side outer wall, just the rear side lateral wall of oil pump mount table with the rear end outer wall of cylinder cap is even as an organic whole, the strengthening rib is including locating the lateral wall of oil pump mount table with lateral part strengthening rib between the side outer wall.

Furthermore, the lateral reinforcing ribs extend from the lateral outer wall to the mounting table surface of the oil pump mounting table, and the included angle between the outer edges of the lateral reinforcing ribs and the lateral outer wall is 40-50 degrees.

Furthermore, the lateral reinforcing ribs comprise a front reinforcing rib connected with the front side of the oil pump mounting platform and a bottom reinforcing rib connected with the bottom of the oil pump mounting platform.

Further, the front reinforcing ribs are at least two arranged at intervals.

Furthermore, the reinforcing rib comprises a rear reinforcing rib arranged between the rear side wall and the rear end outer wall.

Furthermore, an oil pump cam chamber is formed in the end face of the cylinder cover and corresponds to the oil pump cam chamber, a convex cam chamber rear end flange face is constructed on the outer wall of the rear end, the rear side reinforcing rib comprises a rear side wall reinforcing rib and a mounting table reinforcing rib, the rear side wall reinforcing rib extends to the cam chamber rear end flange face from the outer wall of the rear end below the oil pump cam chamber, and the mounting table reinforcing rib is intersected with the rear side wall reinforcing rib and extends to the mounting table face of the oil pump mounting table.

Furthermore, a tappet insertion hole which is communicated with the oil pump cam chamber and is arranged in a downward inclination mode is formed in the mounting table top, and the included angle between the arrangement direction of the reinforcing ribs of the mounting table and the axial direction of the tappet insertion hole is 40-60 degrees.

Furthermore, the reinforcing rib comprises a tail reinforcing rib which is arranged on the flange surface at the rear end of the cam chamber and faces away from one side of the oil pump mounting table.

Compared with the prior art, the utility model discloses following advantage has:

engine oil pump mounting structure, construct oil pump mount table integrated into one piece ground on the cylinder cap, reduced fastening bolt's link, set up additional strengthening simultaneously between the surface of oil pump mount table and cylinder cap to make the overall installation structural rigidity of oil pump obtain the reinforcing, be favorable to the improvement of oil pump modal characteristic.

In addition, the reinforcing rib reinforcing structure is suitable for the cylinder cover, the oil pump mounting platform and the reinforcing rib between the cylinder cover and the oil pump mounting platform to be integrally cast, and the overall strength and rigidity between the oil pump mounting platform and the cylinder cover can be greatly improved.

Meanwhile, the oil pump mounting platform is arranged on the rear side of the side outer wall of the cylinder cover and arranged at the corner of the side outer wall, so that the assembly of the engine camshaft between the cylinder cover and the cylinder body and the transmission configuration between the oil pump and the camshaft are facilitated. Based on the arrangement position of the oil pump mounting platform on the cylinder cover, reinforcing ribs are arranged on the front side and the bottom of the oil pump mounting platform, the outer edges of the reinforcing ribs are arranged into shapes which form a 45-degree left-right included angle with the outer wall of the side, a triangular support for the oil pump mounting platform is formed, and the effect of improving the rigidity of the oil pump mounting platform by the reinforcing ribs can be improved. The tail part of the oil pump cam chamber, namely one side of the flange surface at the rear end of the cam chamber back to the oil pump mounting table, is provided with the reinforcing rib, and the vacuum pump mounting table is generally arranged on the outer wall at the rear end and spaced from the flange surface at the rear end of the cam chamber, so that the flange surface at the rear end of the cam chamber, the outer wall at the rear end and the vacuum pump mounting table are connected through the reinforcing rib at the tail part, and the overall strength of the outer wall at the rear end and the oil pump mounting table can be greatly improved.

Drawings

The accompanying drawings, which form a part of the present disclosure, are provided to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions thereof are provided to explain the present disclosure, wherein the related terms in the front, back, up, down, and the like are only used to represent relative positional relationships, and do not constitute an undue limitation of the present disclosure. In the drawings:

fig. 1 is a schematic view of a three-dimensional structure of an engine oil pump mounting structure applied to a cylinder head according to an embodiment of the present invention;

FIG. 2 is a top view of the cylinder head shown in FIG. 1;

fig. 3 is a schematic overall structure diagram of an engine oil pump mounting structure according to an embodiment of the present invention;

FIG. 4 is a schematic view of the cylinder head shown in FIG. 3 at view A;

fig. 5 is a right side view of an engine oil pump mounting structure according to an embodiment of the present invention;

description of reference numerals:

1. a cylinder cover; 10. a vacuum pump mounting table; 100. an oil pump cam chamber; 101. an upper oil duct; 102. an oil return passage; 103. a cam chamber rear end flange face; 11. an end face; 12. a rear end outer wall; 13. a side outer wall;

2. an oil pump mounting table; 20. mounting a table top; 200. a tappet plug-in hole; 201. a fixing hole; 21. a front side reinforcing rib; 22. a bottom reinforcing rib; 23. a rear side reinforcing rib; 231. a rear side wall reinforcing rib; 232. mounting a platform reinforcing rib; 24. tail reinforcing ribs; 241. a lower reinforcing rib; 242. and end face reinforcing ribs.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless expressly limited otherwise. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to an engine oil pump mounting structure which can enhance the rigidity of the mounting structure of an engine oil pump, thereby being beneficial to improving the modal characteristic of the oil pump.

The engine oil pump mounting structure comprises an oil pump mounting platform arranged on a cylinder cover of an engine, wherein the oil pump mounting platform is integrally formed on the cylinder cover. And, the oil pump mount is provided with additional strengthening between the surface of cylinder cap and the lateral wall of oil pump mount for the surperficial evagination setting of cylinder cap.

Based on the above design concept, an exemplary structure in which the engine oil pump mounting structure of the present embodiment is applied to a cylinder head of an engine is shown in fig. 1.

As shown in fig. 2, the housing of the engine is generally in a form of fastening a cylinder block and a cylinder head 1, two camshafts are arranged in parallel in the engine, an oil pump for supplying oil to the engine is driven by one camshaft, and a vacuum pump on the engine is driven by the other camshaft. Therefore, an oil pump cam chamber 100 for driving connection of an oil pump and a camshaft, and a vacuum pump mounting base 10 on which a vacuum pump is mounted are opened in the cylinder head 1. In this embodiment, the cam chamber rear end flange surface 103 of the oil pump cam chamber 100 and the vacuum pump mounting platform 10 are both disposed on the rear end outer wall 12 of the rear end portion of the cylinder head 1 and are disposed adjacent to the fastened end surface 11 of the cylinder head 1, and this embodiment is based on the above arrangement, and the technical solution of the present invention is based on explanation; however, it should be noted that the engine oil pump mounting structure of the present invention is not limited to the cylinder head arrangement structure described above.

In order to be suitable for the integral casting forming of the cylinder cover 1, the oil pump mounting platform 2 and a reinforcing structure between the oil pump mounting platform and the oil pump mounting platform, the reinforcing structure adopts a form of a plurality of reinforcing ribs integrally formed between the side wall of the oil pump mounting platform 2 and the surface of the cylinder cover 1, so that the integral strength and rigidity between the oil pump mounting platform 2 and the cylinder cover 1 can be greatly improved; the thickness of the reinforcing ribs in the embodiment is preferably set to be more than 4mm, and the thickness can be flexibly adjusted according to the arrangement positions and the number of the reinforcing ribs. Of course, the reinforcing structure can also be in the form of a fixedly mounted connecting rod, a clamping-type fixing sleeve and the like.

As shown in fig. 3 in conjunction with fig. 1, directional coordinates x, y, and z in the drawing respectively indicate the length, width, and height directions of the cylinder head 1, and an arrow of the x coordinate indicates the rear side direction of the cylinder head 1 described in the present embodiment, and accordingly, the side wall on the x positive side of the oil pump mount 2 is the rear side wall of the oil pump mount 2, and the side wall on the x negative side of the oil pump mount 2 is the front side wall of the oil pump mount 2. Based on the above-described orientation setting, in the present embodiment, the oil pump mount 2 is located close to the rear side of the side outer wall 13 of the cylinder head 1 and at the corner of the side outer wall 13. The rear side wall of the oil pump mounting platform 2 is connected with the rear end outer wall 12 of the cylinder cover 1 into a whole, and the reinforcing ribs comprise side reinforcing ribs arranged between the side wall of the oil pump mounting platform 2 and the side outer wall 13. Specifically, the side reinforcing ribs there may include a front reinforcing rib 21 connected to a front side wall of the oil pump mount 2, and a bottom reinforcing rib 22 connected to a bottom side wall of the oil pump mount 2. Preferably, each lateral reinforcing rib extends from the lateral outer wall 13 to the mounting table surface 20 of the oil pump mounting table 2, and the included angle between the outer edge of each lateral reinforcing rib and the lateral outer wall 13 is 40-50 degrees. For example, the front reinforcing ribs 21 are each 7.5mm thick and each have an included angle of 46 ° with the x-axis.

The oil pump mounting table 2 is arranged at the rear side of the side outer wall 13 of the cylinder head 1 and is arranged at the corner of the side outer wall 13, so that the assembly of the engine camshaft between the cylinder head 1 and the cylinder body and the transmission configuration between the oil pump and the camshaft are facilitated. Based on the arrangement position of oil pump mount table 2 on cylinder cap 1, set up the strengthening rib in the front side and the bottom of oil pump mount table 2 to set up the outer edge of strengthening rib for being 45 degrees left and right included angle's shape with side outer wall 13, form the triangle-shaped support to oil pump mount table 2, can promote the strengthening rib to the effect that oil pump mount table 2 rigidity improves.

In view of the arrangement space of the front reinforcing ribs 21, the front reinforcing ribs 21 may be provided in at least two spaced arrangement, so that the connection strength and rigidity between the oil pump mount 2 and the cylinder head 1 can be further enhanced.

As shown in fig. 3, the ring tappet insertion hole 200 on the mounting table 20 is opened with a fixing hole 201, and the oil pump can be mounted on the oil pump mounting table 2 by bolts screwed into the fixing hole 201. For example, two fixing holes 201 may be symmetrically arranged, and a connecting line between the two fixing holes 201 preferably forms an angle of about 45 ° with the z-axis direction. The vibration stress generated by the oil pump on the mounting table 20, namely the radial stress F2, is decomposed into F2x and F2z shown in the figure, the front side reinforcing rib 21 forms a relieving support for the F2x, and the bottom reinforcing rib 22 forms a relieving support for the F2 z.

As shown in fig. 4 and 5, the reinforcing rib further includes a rear reinforcing rib 23 provided between the rear side wall of the oil pump mount 2 and the rear end outer wall 12. The reinforcing ribs are additionally arranged between the rear side wall of the oil pump mounting platform 2 and the rear end outer wall 12 of the cylinder cover 1, so that the reinforcing structure between the oil pump mounting platform 2 and the cylinder cover 1 is distributed more evenly, the rigidity of the oil pump mounting platform 2 is further improved, and the vibration modal characteristic of an oil pump is improved.

Specifically, the end surface 11 of the cylinder head 1 is provided with an oil pump cam chamber 100, and a rear end outer wall 12 is provided with a convex cam chamber rear end flange surface 103 corresponding to the oil pump cam chamber 100. The rear-side reinforcing rib 23 includes a rear-side wall reinforcing rib 231 and a mount-table reinforcing rib 232, the rear-side wall reinforcing rib 231 extends from the rear-end outer wall 12 below the oil pump cam chamber 100 to the cam-chamber rear-end flange surface 103, and the mount-table reinforcing rib 232 intersects with the rear-side wall reinforcing rib 231 and extends to the mount-table surface 20 of the oil pump mount-table 2.

Based on the structure form that the cylinder cover 1 is buckled with the cylinder body of the engine, the camshaft and the oil pump form driving connection in the oil pump cam chamber 100; corresponding to the oil pump cam chamber 100, a cam chamber rear end flange face 103 configured to fit a camshaft of the engine is formed on the rear end outer wall 12, and an end portion of the camshaft is fitted in a flange on the cam chamber rear end flange face 103. Rear-side wall reinforcing ribs 231 are provided extending between the rear-end outer wall 12, the outer wall of the oil pump cam chamber 100, and the cam-chamber rear-end flange surface 103, and mounting-table reinforcing ribs 232 are provided so as to intersect with the rear-side wall reinforcing ribs 231, and the mounting-table reinforcing ribs 232 extend to the mounting table surface 20 of the oil pump mounting table 2, so that the structural strength of the oil pump mounting table 2, the outer wall of the oil pump cam chamber 100, and the rear-end outer wall 12 as a whole can be improved, and the mounting structural rigidity of the oil pump mounting table 2 can be further improved. The rear sidewall ribs 231 are preferably 10mm thick.

Wherein, the mounting table 20 is provided with a tappet inserting hole 200 which is communicated with the oil pump cam chamber 100 and is arranged in a declination way, because of the buckling structure of the cylinder body and the cylinder cover 1, the oil pump cam chamber 100 adopts a mode of being evenly distributed on the cylinder cover 1 and the cylinder body in half, and the oil pump mounting table 2 is arranged on the cylinder cover 1; therefore, the oil pump mounting table 2 and the mounting table surface 20 thereof are inclined downward, so that the tappet insertion hole 200 is opposite to the camshaft in the oil pump cam chamber 100, and the driving connection configuration between the tappet of the oil pump mounting table 2 and the camshaft is facilitated. Meanwhile, the included angle between the arrangement direction of the mounting platform reinforcing ribs 232 and the axial direction of the tappet insertion hole 200 is preferably set to be 40-60 degrees, and the included angle between the mounting platform reinforcing ribs 232 and the axial direction of the tappet insertion hole 200 is preferably 50 degrees and is 8mm thick. Therefore, the force generated in the axial direction of the tappet in the operation process of the oil pump can be well decomposed, so that the resonance of the oil pump mounting platform 2 is weakened, and the vibration mode of the oil pump is improved.

F1 in fig. 5 shows the axial force in the axial direction of the tappet to which the oil pump is subjected during operation, the axial force F1 is decomposed into F1y and F1z shown in the figure, the mounting table reinforcing rib 232 forms the relieving support for F1y, and the bottom reinforcing rib 22 forms the relieving support for F1 z.

Further, as shown in fig. 4, a rib may also be provided at the tail of the oil pump cam chamber 100, i.e., at the side of the cam chamber rear end flange face 103 facing away from the oil pump mount 2. Because the vacuum pump mounting table 10 which is spaced from the cam chamber rear end flange surface 103 is generally arranged on the rear end outer wall 12, the cam chamber rear end flange surface 103, the rear end outer wall 12 and the vacuum pump mounting table 10 are connected through the tail reinforcing rib 24, and the overall strength of the rear end outer wall 12 and the oil pump mounting table 2 can be greatly improved. In the present embodiment, the tail bead 24 includes an end-face bead 242 disposed adjacent to the end face 11, and a lower bead 241 located below the end-face bead 242. The lower reinforcing ribs 241 are preferably 8mm thick and are arranged in a downward inclined mode, and the included angle between the lower reinforcing ribs and the y-axis direction is 40 degrees.

It should be noted that the oil path of the oil pump is generally disposed in the wall body of the cylinder head 1, and in this embodiment, the oil path 101 extends from the rear end outer wall 12 to the oil pump mounting platform 2, so that the rigidity of the oil pump mounting platform 2 in the z direction can be improved, and the oil path can cooperate with the bottom reinforcing rib 22 and other reinforcing ribs to achieve a mutual reinforcing effect; the oil return channel 102 extends from the rear outer wall 12 to the rear flange surface 103 of the cam chamber, and is arranged in cooperation with the tail reinforcing rib 24 to play a role of mutual reinforcement, so that the rigidity of the oil pump cam chamber 100 in the y direction can be improved.

The engine oil pump mounting structure of this embodiment constructs oil pump mount table 2 integrated into one piece ground on cylinder cap 1, has reduced fastening bolt's link, sets up additional strengthening simultaneously between the surface of oil pump mount table 2 and cylinder cap 1 to make the overall installation structural rigidity of oil pump obtain the reinforcing, be favorable to the improvement of oil pump modal characteristic.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an engine oil pump mounting structure, is including oil pump mount table (2) on locating cylinder cap (1) of engine, its characterized in that: oil pump mount table (2) integrated into one piece in on cylinder cap (1), and for the surface evagination setting of cylinder cap (1), and in the lateral wall of oil pump mount table (2) with be provided with additional strengthening between the surface of cylinder cap (1).

2. The engine oil pump mounting structure according to claim 1, characterized in that: the reinforcing structure comprises a plurality of reinforcing ribs which are integrally formed between the side wall of the oil pump mounting platform (2) and the surface of the cylinder cover (1).

3. The engine oil pump mounting structure according to claim 2, characterized in that: oil pump mount table (2) are close to the rear side of side outer wall (13) of cylinder cap (1), and are located the bight of side outer wall (13), just the rear side lateral wall of oil pump mount table (2) with rear end outer wall (12) of cylinder cap (1) link as an organic wholely, the strengthening rib is including locating the lateral wall of oil pump mount table (2) with lateral part strengthening rib between side outer wall (13).

4. The engine oil pump mounting structure according to claim 3, characterized in that: the lateral reinforcing ribs extend from the lateral outer wall (13) to a mounting table top (20) of the oil pump mounting table (2), and an included angle between the outer edge of each lateral reinforcing rib and the lateral outer wall (13) is 40-50 degrees.

5. The engine oil pump mounting structure according to claim 4, characterized in that: the lateral reinforcing ribs comprise front reinforcing ribs (21) connected with the front side of the oil pump mounting platform (2) and bottom reinforcing ribs (22) connected with the bottom of the oil pump mounting platform (2).

6. The engine oil pump mounting structure according to claim 5, characterized in that: the front side reinforcing ribs (21) are at least two arranged at intervals.

7. The engine oil pump mounting structure according to any one of claims 3 to 6, characterized in that: the reinforcing rib comprises a rear reinforcing rib (23) arranged between the rear side wall and the rear end outer wall (12).

8. The engine oil pump mounting structure according to claim 7, characterized in that: the oil pump structure is characterized in that an oil pump cam chamber (100) is formed in an end face (11) of the cylinder cover (1) and corresponds to the oil pump cam chamber (100), a convex cam chamber rear end flange face (103) is constructed on a rear end outer wall (12), rear side reinforcing ribs (23) comprise rear side wall reinforcing ribs (231) and mounting table reinforcing ribs (232), the rear side wall reinforcing ribs (231) are formed by the rear end outer wall (12) below the oil pump cam chamber (100) and extend to the cam chamber rear end flange face (103), and the mounting table reinforcing ribs (232) are intersected with the rear side wall reinforcing ribs (231) and extend to a mounting table face (20) of the oil pump mounting table (2).

9. The engine oil pump mounting structure according to claim 8, characterized in that: the mounting table top (20) is provided with a tappet insertion hole (200) which is communicated with the oil pump cam chamber (100) and is arranged in a downward inclining mode, and an included angle between the arrangement direction of the mounting table reinforcing ribs (232) and the axial direction of the tappet insertion hole (200) is 40-60 degrees.

10. The engine oil pump mounting structure according to claim 8, characterized in that: the reinforcing ribs comprise tail reinforcing ribs (24) which are arranged on the side, back to the oil pump mounting table (2), of the flange face (103) at the rear end of the cam chamber.