CN210483932U - High-pressure oil pump seat of gasoline engine - Google Patents
High-pressure oil pump seat of gasoline engine Download PDFInfo
- Publication number
- CN210483932U CN210483932U CN201921318189.3U CN201921318189U CN210483932U CN 210483932 U CN210483932 U CN 210483932U CN 201921318189 U CN201921318189 U CN 201921318189U CN 210483932 U CN210483932 U CN 210483932U
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- oil pump
- pressure oil
- oil duct
- pump seat
- duct
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Abstract
The utility model relates to a high-pressure oil pump seat of gasoline engine, including the high-pressure oil pump seat body that is equipped with the oil duct, the terminal surface is the cylinder cap connection face before the high-pressure oil pump seat body, and high-pressure oil pump seat body up end is high-pressure oil pump installation face, and the cylinder cap connection face is equipped with the inner chamber, and high-pressure oil pump installation face is equipped with high-pressure oil pump tappet hole, and the inside wall in high-pressure oil pump tappet hole is equipped with the tappet guide way, and the position that high-pressure oil pump seat body lateral wall and tappet guide way correspond is equipped; the oil ducts comprise a first oil duct, a second oil duct and an inclined oil duct, and two ends of the inclined oil duct are respectively communicated with the first oil duct and the second oil duct. The utility model can effectively reduce the problems of oil leakage and oil leakage of the oil pump seat by increasing the reinforcing ribs of the guide grooves and reducing the depth of the sealing ring grooves; meanwhile, the cutter detection surface is machined on the inner side wall of the inner cavity, so that the interference risk with an exhaust cam shaft is reduced, and the working reliability is improved.
Description
Technical Field
The utility model belongs to the technical field of automobile engine, a high-pressure oil pump seat that gasoline engine used is related to.
Background
The high-pressure oil pump seat of the gasoline engine mainly has the function of providing a closed space for the rear ends of a high-pressure oil pump tappet, a fuel pump cam and an exhaust cam shaft, preventing impurities from entering, sequentially lubricating the parts through lubricating oil flowing into an oil passage hole of a cylinder cover, and reducing the abrasion of the parts.
The top surface of a high-pressure oil pump seat in the prior art is provided with a high-pressure oil pump, and the side surface of the high-pressure oil pump seat is provided with a positioning pin and is fixed on a cylinder cover through a bolt; the high-pressure oil pump tappet moves up and down in the cylindrical through hole through the guide groove; the fuel pump cam arranged on the exhaust cam shaft is contacted with the high-pressure fuel pump tappet through a high-pressure casting cavity of the fuel pump cam to provide power for the vertical movement of the high-pressure fuel pump tappet; the lubricating oil flows into the oil passage hole of the cylinder cover from the oil passage hole of the cylinder cover and then flows back to the oil pan through the cylinder cover hole.
The design of the high-pressure oil pump seat in the prior art has the following defects:
1. the forming process of the oil passage hole of the high-pressure oil pump seat comprises the following steps: firstly, a core rod of a grinding tool is cored to form a bottom hole, then machining is carried out, and finally steel ball press mounting is completed; because the pump seat is a high-pressure casting part, the wall thickness of the oil duct hole is too thick, sand holes and air holes are easy to concentrate, and the design defect of oil leakage can occur after the processing is finished;
2. the guide groove of the tappet hole of the high-pressure oil pump seat is formed by machining, and the wall thickness of the guide groove of the conventional pump seat is thin, so that the shrinkage defect is easy to occur; in addition, due to machining tolerance, the phenomena of cutter error and cutter back-off can occur in the machining process, and the phenomenon of cracking easily occurs at the position with too thin wall thickness; moreover, the guide groove bears the high-speed friction of the tappet and simultaneously bears the infiltration of lubricating oil, so that the oil seepage phenomenon is more easily caused at the guide groove;
3. the clearance undersize between the inner cavity of the high-pressure oil pump seat and the exhaust cam shaft and the cam of the fuel pump easily causes interference risks.
Disclosure of Invention
The utility model aims at the problem that above-mentioned prior art exists, provide a structure optimization, reliable operation's gasoline engine high pressure oil pump seat.
The technical scheme for solving the technical problems is as follows: a high-pressure oil pump seat of a gasoline engine comprises a high-pressure oil pump seat body provided with an oil passage, wherein the front end face of the high-pressure oil pump seat body is a cylinder cover connecting face connected with an engine, the upper end face of the high-pressure oil pump seat body is a high-pressure oil pump mounting face connected with a high-pressure oil pump, the cylinder cover connecting face is recessed backwards and is provided with an inner cavity used for accommodating an exhaust cam shaft, the high-pressure oil pump mounting face is recessed downwards and is provided with a high-pressure oil pump tappet hole communicated with the inner cavity, the inner side wall of the high-pressure oil pump tappet hole is provided with a tappet guide groove, and a guide groove reinforcing rib is arranged at the position of the outer side; the oil duct includes first oil duct, second oil duct and oblique oil duct, and first oil duct is connected the face by the cylinder cap and is extended backward and communicate with the bottom of first oil duct to the position that high-pressure oil pump seat body leaned on the bottom by high-pressure oil pump mounting surface, and oblique oil duct is 45 contained angles with high-pressure oil pump tappet hole, and the upper end and the high-pressure oil pump tappet hole intercommunication of oblique oil duct, the lower extreme and the first oil duct intercommunication of oblique oil duct.
The utility model discloses further technical scheme is: the cylinder cover connecting surface is provided with a sealing ring groove used for positioning a sealing ring, and the sealing ring groove surrounds the inner cavity and the outer side of the second oil duct.
The utility model discloses further technical scheme is: the inner side wall of the inner cavity is provided with a cutter inspection surface.
The utility model discloses a gasoline engine high pressure oil pump seat has following beneficial effect owing to adopt above-mentioned structure:
1. the utility model adds the guide groove reinforcing rib on the outer side wall of the high-pressure oil pump seat body, so that the wall thickness of the tappet guide groove can be increased, and the oil leakage problem of the oil pump seat caused by the procedures of high-pressure casting, machining and the like during processing can be effectively reduced;
2. the depth of the sealing ring groove of the utility model is slightly less than that of the ring groove in the prior art, so that the wall thickness between the bottom of the sealing ring groove and the wall of the high-pressure oil pump tappet hole is increased, and further the risk of leakage of oil from the bottom of the sealing groove due to the impact of high-pressure oil carried by the tappet hole for a long time and the abrasion and impact of tappet motion is reduced;
3. the utility model discloses an inner chamber inside wall has worker's sword to examine the face, carries out cutting process with the cutter at the inside wall of inner chamber promptly when machining, will handle because of the extra materials processing of the production of drawing die inclination to reduce and exhaust camshaft because of the interference risk that machining error, assembly error etc. cause, improve operational reliability.
The technical features of the high pressure oil pump base of the gasoline engine according to the present invention will be further described with reference to the accompanying drawings and embodiments.
Drawings
FIG. 1: the utility model relates to a structure schematic diagram of a gasoline engine high-pressure oil pump seat;
FIG. 2: the front view of the utility model;
FIG. 3: a cross-sectional view at a-a in fig. 2;
FIG. 4: the utility model discloses a rear view;
FIG. 5: a cross-sectional view at B-B in FIG. 4;
FIG. 6: the side view of the utility model;
FIG. 7: a cross-sectional view at C-C in FIG. 6;
FIG. 8: the top view of the utility model;
FIG. 9: a cross-sectional view at D-D in FIG. 8;
the reference numbers illustrate: the oil pump structure comprises the following components, by weight, 1-a high-pressure oil pump seat body, 2-a high-pressure oil pump mounting surface, 3-a high-pressure oil pump tappet hole, 31-a tappet guide groove, 4-a first oil duct, 5-a second oil duct, 6-a sealing ring groove, 7-an inner cavity, 8-a cylinder cover connecting surface, 9-a guide groove reinforcing rib and 10-an inclined oil duct.
Detailed Description
As shown in fig. 1 to 9, the utility model relates to a high-pressure oil pump seat of gasoline engine, including the high-pressure oil pump seat body 1 that is equipped with the oil duct, the terminal surface is connected face 8 for the cylinder cap of being connected with the engine before high-pressure oil pump seat body 1, and high-pressure oil pump seat body 1 up end is the high-pressure oil pump installation face 2 of being connected with high-pressure oil pump.
The cylinder cover connecting surface 8 is provided with an inner cavity 7 for accommodating an exhaust camshaft in a backward concave manner, the high-pressure oil pump mounting surface 2 is provided with a high-pressure oil pump tappet hole 3 communicated with the inner cavity 7 in a downward concave manner, the inner side wall of the high-pressure oil pump tappet hole 3 is provided with a tappet guide groove 31, and the tappet guide groove 31 is used for guiding and positioning a high-pressure oil pump tappet; a guide groove reinforcing rib 9 is arranged at the position of the outer side wall of the high-pressure oil pump seat body 1 corresponding to the tappet guide groove 31; through increasing the strengthening rib at 1 lateral wall of high-pressure oil pump seat body, can be so that tappet guide way 31 department wall thickness increases, reduce the oil pump seat oil impregnate problem that leads to because of processes such as high pressure casting, machining during add man-hour.
The utility model discloses an oil duct includes first oil duct 4, second oil duct 5 and oblique oil duct 10, first oil duct 4 is connected face 8 ranging back and is linked together with the bottom of first oil duct 4 by high-pressure oil pump installation face 2 downwardly extending to high-pressure oil pump seat body 1 by the cylinder cap, oblique oil duct 10 is 45 contained angles with high-pressure oil pump tappet hole 3, and the upper end and the 3 intercommunications of high-pressure oil pump tappet hole of oblique oil duct 10, the lower extreme and the 4 intercommunications of first oil duct of oblique oil duct 10. High-pressure oil pump seat of prior art, in order to strengthen the intensity and the rigidity of part when the design, the strengthening rib has been increased in the position department that 1 lateral wall of high-pressure oil pump seat body and first oil duct 4 correspond usually, and the utility model discloses a change the concrete shape and the position of here strengthening rib, under the intensity of not influencing the part and the condition of rigidity, reduce the outside wall thickness of 4 departments of first oil duct, reduce here and produce defect conditions such as sand eye, gas pocket, avoid causing the oil duct oil impregnate problem because of the design.
The cylinder cover connecting surface 8 is provided with a sealing ring groove 6 for positioning a sealing ring, and the sealing ring groove 6 surrounds the inner cavity 7 and the outer side of the second oil duct 5. Because high-pressure oil pump tappet hole 3 is when the shaping, at first loose core through the mould plug and form the bottom hole, then carry out machining again, current high-pressure oil pump tappet hole 3 is thinner with the wall thickness between the 6 bottoms in seal ring groove, because the impact and tappet kinematic wear, the impact of high-pressure fluid are born for a long time to this place, the oil seepage phenomenon appears easily, and then influences sealed effect, so the utility model discloses a degree of depth of seal ring groove 6 is slightly littleer than the ring groove degree of depth of prior art, its purpose is for increasing the wall thickness between 6 and the high-pressure oil pump tappet hole 3 of seal ring groove, and then reduces the impact and the tappet kinematic wear that bear high-pressure fluid for a long time because of the tappet hole, impact and then cause the risk of fluid from seal groove bottom seepage.
In addition, because clearance undersize between inner chamber 7 of high-pressure oil pump seat and exhaust camshaft and the fuel pump cam, the risk of interfering appears easily in the operation, the utility model discloses a high-pressure oil pump seat when adding man-hour, examine the face through the inside wall processing sword at inner chamber 7, carry out cutting process at the inside wall of inner chamber 7 with the cutter when adding man-hour promptly, will handle because of the extra materials processing of the production of draft to reduce and the interference risk that causes because of machining error, assembly error etc. with exhaust camshaft.
The above embodiments are only preferred embodiments of the present invention, the structure of the present invention is not limited to the forms illustrated in the above embodiments, and any modifications, equivalent substitutions and the like made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (3)
1. The utility model provides a gasoline engine high pressure oil pump seat, is including high pressure oil pump seat body (1) that is equipped with the oil duct, its characterized in that: the front end face of the high-pressure oil pump seat body (1) is a cylinder cover connecting face (8) connected with an engine, the upper end face of the high-pressure oil pump seat body (1) is a high-pressure oil pump mounting face (2) connected with a high-pressure oil pump, the cylinder cover connecting face (8) is recessed backwards to be provided with an inner cavity (7) used for accommodating an exhaust cam shaft, the high-pressure oil pump mounting face (2) is recessed downwards to be provided with a high-pressure oil pump tappet hole (3) communicated with the inner cavity (7), the inner side wall of the high-pressure oil pump tappet hole (3) is provided with a tappet guide groove (31), and a guide groove reinforcing rib (9) is arranged at a position, corresponding to the tappet guide groove (; the oil duct includes first oil duct (4), second oil duct (5) and oblique oil duct (10), first oil duct (4) are connected face (8) backward and are linked together with the bottom of first oil duct (4) by cylinder cap by high-pressure oil pump installation face (2) downwardly extending to high-pressure oil pump seat body (1) by the position of bottom, oblique oil duct (10) are 45 contained angles with high-pressure oil pump tappet hole (3), and the upper end and high-pressure oil pump tappet hole (3) intercommunication of oblique oil duct (10), the lower extreme and first oil duct (4) intercommunication of oblique oil duct (10).
2. The high-pressure oil pump seat of the gasoline engine as claimed in claim 1, wherein: the cylinder cover connecting surface (8) is provided with a sealing ring groove (6) used for positioning a sealing ring, and the sealing ring groove (6) surrounds the outer sides of the inner cavity (7) and the second oil duct (5).
3. The high-pressure oil pump seat of the gasoline engine as claimed in claim 1, wherein: the inner side wall of the inner cavity (7) is provided with a cutter detection surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921318189.3U CN210483932U (en) | 2019-08-14 | 2019-08-14 | High-pressure oil pump seat of gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921318189.3U CN210483932U (en) | 2019-08-14 | 2019-08-14 | High-pressure oil pump seat of gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210483932U true CN210483932U (en) | 2020-05-08 |
Family
ID=70535863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921318189.3U Expired - Fee Related CN210483932U (en) | 2019-08-14 | 2019-08-14 | High-pressure oil pump seat of gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210483932U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927664A (en) * | 2020-08-11 | 2020-11-13 | 中国第一汽车股份有限公司 | High-pressure oil pump base and car |
| CN114109679A (en) * | 2021-11-29 | 2022-03-01 | 哈尔滨东安汽车动力股份有限公司 | High-pressure oil pump seat |
-
2019
- 2019-08-14 CN CN201921318189.3U patent/CN210483932U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927664A (en) * | 2020-08-11 | 2020-11-13 | 中国第一汽车股份有限公司 | High-pressure oil pump base and car |
| WO2022033250A1 (en) * | 2020-08-11 | 2022-02-17 | 中国第一汽车股份有限公司 | High pressure oil pump base and automobile |
| CN114109679A (en) * | 2021-11-29 | 2022-03-01 | 哈尔滨东安汽车动力股份有限公司 | High-pressure oil pump seat |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200508 |
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| CF01 | Termination of patent right due to non-payment of annual fee |