CN212642899U - Valve chamber cover capable of avoiding repeated authentication - Google Patents
Valve chamber cover capable of avoiding repeated authentication Download PDFInfo
- Publication number
- CN212642899U CN212642899U CN202020998891.5U CN202020998891U CN212642899U CN 212642899 U CN212642899 U CN 212642899U CN 202020998891 U CN202020998891 U CN 202020998891U CN 212642899 U CN212642899 U CN 212642899U
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- pressure chamber
- base
- upper cover
- valve
- cover
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- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims description 23
- 238000011161 development Methods 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Check Valves (AREA)
Abstract
The utility model aims at providing a can avoid valve door chamber shroud of repeated authentication. The valve chamber cover of the utility model comprises a base and an upper cover which are connected in a sealing way, and the key point is that the base and the upper cover form a low-pressure chamber and a high-pressure chamber which are mutually isolated, the base is provided with an air inlet used for being connected with a crankcase at the position corresponding to the low-pressure chamber, and the base is provided with an air outlet used for being connected with an air passage of a cylinder cover at the position corresponding to the high-pressure chamber; a PCV valve is installed between the low pressure chamber and the high pressure chamber to communicate the low pressure chamber and the high pressure chamber; the mark of the PCV valve faces to the upper cover, and the upper cover is provided with a viewing window at the position corresponding to the PCV valve. The utility model discloses a valve chamber shroud embeds the PCV valve, makes the sign of PCV valve directly perceived visible simultaneously to can avoid repeated authentication, be favorable to reduce cost and accelerate the development progress.
Description
Technical Field
The utility model relates to a valve chamber shroud.
Background
The engine valve chamber cover cap is mainly used for oil-gas separation and pressure adjustment in a crankcase, and has the functions of sealing a cylinder cover, fixing an ignition coil, wiring harnesses and the like. According to the design principle of a crank system, a large load branch and a small load branch in the crank system are provided with oil-gas separation structures, and the small load branch needs to be matched with a PCV (flow check valve). To avoid freezing of the crankshaft and to reduce the number and cost of calibration work (national six-way diagnostic), more and more engines place small-load crankshaft tubes inside the cylinder head and valve chamber cover, while PCV valves are also built into the valve chamber cover.
PCV valves are regulations, and the regulatory number and supplier designation must be in the product visibility region (national regulatory requirements). When the PCV valve is built in the cover, the legal and supply trademark numbers of the PCV valve can only be engraved on the surface of the cover, and the certification of the PCV valve does not satisfy the terms related to "non-detachable structure exemption" in the national six regulations. Therefore, after a new valve chamber cover supplier is developed, due to the fact that the cover is changed, the PCV valve inside the cover must be re-authenticated, the engine and the whole vehicle matched with the valve chamber are re-authenticated by regulations, the product platformization and the product generalization are influenced, and the cost and the period of product development are increased.
Disclosure of Invention
The utility model aims at providing a can avoid valve door chamber shroud of repeated authentication.
The valve chamber cover of the utility model comprises a base and an upper cover which are connected in a sealing way, and the key point is that the base and the upper cover form a low-pressure chamber and a high-pressure chamber which are mutually isolated, the base is provided with an air inlet used for being connected with a crankcase at the position corresponding to the low-pressure chamber, and the base is provided with an air outlet used for being connected with an air passage of a cylinder cover at the position corresponding to the high-pressure chamber; a PCV valve is installed between the low pressure chamber and the high pressure chamber to communicate the low pressure chamber and the high pressure chamber; the mark of the PCV valve faces to the upper cover, and the upper cover is provided with a viewing window at the position corresponding to the PCV valve.
In the valve chamber cover, the marks (the code part number and the supplier mark) on the code part PCV valve can be visualized through the observation window, so that when a supplier of the valve chamber cover is replaced, as long as the same type of PCV valve (the code part number and the supplier mark are the same), the repeated authentication is not needed, namely, only one authentication needs to be carried out on the PCV valve in the development process, so that the authentication frequency is reduced, and the valve chamber cover is beneficial to reducing the cost and accelerating the development progress.
Preferably, the base and the upper cover are provided with welding ribs corresponding in position and contour, and the base and the upper cover are fixedly connected through welding; the welding ribs are two and correspond to the profiles of the low-pressure chamber and the high-pressure chamber respectively, and the welding ribs of the base and the upper cover form the low-pressure chamber and the high-pressure chamber after being welded. When the upper cover of the valve chamber cover is assembled, vibration friction welding is carried out, the upper cover and the base are welded together, a low-pressure chamber and a high-pressure chamber are formed, and the sealing performance of the low-pressure chamber and the high-pressure chamber and the connection reliability of the upper cover and the base can be ensured.
Preferably, the base and the upper cover are provided with positioning parts corresponding to each other between the two welding ribs, and the PCV valve is mounted at the positioning parts. This makes it possible to secure the PCV valve between the low pressure chamber and the high pressure chamber at the same time when the upper cover and the base are fixed by welding.
Preferably, the contour of the base is larger than that of the upper cover, a fixing through hole is formed at the outer edge of the base, and the valve chamber cover can be fixed on the engine cylinder cover by using a bolt penetrating through the fixing through hole.
The utility model discloses a valve chamber shroud embeds the PCV valve, makes the sign of PCV valve directly perceived visible simultaneously to can avoid repeated authentication, be favorable to reduce cost and accelerate the development progress.
Drawings
Fig. 1 is a plan view of a valve chamber cover of embodiment 1.
Fig. 2 is a schematic view of the outside of the upper cover in embodiment 1.
Fig. 3 is a schematic view of the inside of the upper cover in embodiment 1.
Fig. 4 is a schematic structural view of a base in embodiment 1.
Fig. 5 is a schematic diagram of fitting of the PCV valve to the base in embodiment 1.
The figures are numbered: 1. a base; 2. an upper cover; 3. welding ribs; 4. a positioning part; 5. a low pressure chamber; 6. a high pressure chamber; 7. an air inlet; 8. an air outlet; 9. a PCV valve; 10. an observation window; 11. a fixing through hole; 12. and (4) bolts.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings, wherein the embodiments of the present invention are described in detail with reference to the accompanying drawings, for example, the shapes and structures of the respective members, the mutual positions and connection relationships between the respective portions, the functions and operation principles of the respective portions, and the like.
Example 1:
the present embodiment proposes a valve chamber cover that can avoid repeated authentication.
As shown in FIGS. 1 to 4, the valve chamber cover of the present embodiment includes a base 1 and an upper cover 2 which are hermetically connected, wherein:
the base 1 and the upper cover 2 are provided with two closed welding ribs 3 corresponding in position and outline, the two closed welding ribs are roughly rectangular, and the middle of the two closed welding ribs 3 is provided with a positioning part 4 of a groove-shaped structure corresponding in position; the base 1 and the upper cover 2 are fixedly connected in a welding mode through welding ribs 3. The base 1 and the welding rib 3 of the upper cover 2 are welded to form a low-pressure chamber 5 and a high-pressure chamber 6 which are mutually isolated; the base 1 is provided with an air inlet 7 used for being connected with a crankcase at a position corresponding to the low-pressure chamber 5, and the base 1 is provided with four air outlets 8 used for being connected with an air passage of a cylinder cover at a position corresponding to the high-pressure chamber 6; a PCV valve 9 is installed at the positioning portion 4 between the low pressure chamber 5 and the high pressure chamber 6 to communicate the low pressure chamber 5 and the high pressure chamber 6, the PCV valve 9 is marked toward the upper cover 2, the upper cover 2 is provided with a viewing window 10 at a position corresponding to the PCV valve 9, and the viewing window 10 may adopt a through hole structure or the like.
The outline of the base 1 is larger than that of the upper cover 2, a plurality of fixing through holes 11 are uniformly distributed at the outer edge of the base 1, and a valve chamber cover can be fixed on an engine cylinder cover by using bolts 12 penetrating through the fixing through holes 11. The welding rib 3 corresponding to the high-pressure chamber 6 is designed on the outer side of the crankcase, so that once the leakage is caused by poor welding, the quality problems of air leakage or safety throwing caused by over-high bending pressure can be avoided.
When assembling the valve chamber cover upper cover 2, as shown in fig. 5, first, the PCV valve 9 is fixed to the positioning portion 4 on the base 1, then the upper cover 2 is fastened to the base 1, the upper cover 2 is positioned to correspond to the welding rib 3 of the base 1, and finally, vibration friction welding is performed to weld the base 1, the PCV valve 9, and the upper cover 2 together to form the valve chamber cover, and the two closed welding ribs 3 simultaneously form the low pressure chamber 5 and the high pressure chamber 6, so that the sealing performance of the low pressure chamber 5 and the high pressure chamber 6, the connection reliability of the upper cover 2 and the base 1, and the fixing reliability of the PCV valve 9 can be ensured.
In the valve chamber cover, the marks (the code number and the supplier mark) on the code PCV valve 9 can be visually observed through the observation window 10, so that when the valve chamber cover is replaced by a supplier, the same type of PCV valve 9 (the code number and the supplier mark are the same) is adopted, the authentication does not need to be repeated, that is, after the valve chamber cover with the structure is adopted, the notice of the PCV valve 9 of the same type of engine only needs to be made once. The whole vehicle can not make notice again due to different suppliers of the valve chamber cover, so that the authentication times are reduced, the cost is reduced, and the development progress is accelerated.
The present invention has been described in detail with reference to the accompanying drawings, and it is apparent that the present invention is not limited by the above embodiments, and various insubstantial improvements can be made without modification to the present invention.
Claims (4)
1. A valve chamber cover capable of avoiding repeated authentication comprises a base and an upper cover which are connected in a sealing manner, and is characterized in that the base and the upper cover form a low-pressure chamber and a high-pressure chamber which are isolated from each other, an air inlet used for being connected with a crankcase is formed in the position of the base corresponding to the low-pressure chamber, and an air outlet used for being connected with an air passage of a cylinder cover is formed in the position of the base corresponding to the high-pressure chamber; a PCV valve is installed between the low pressure chamber and the high pressure chamber to communicate the low pressure chamber and the high pressure chamber; the mark of the PCV valve faces to the upper cover, and the upper cover is provided with a viewing window at the position corresponding to the PCV valve.
2. The valve chamber cover capable of avoiding the repeated authentication according to claim 1, wherein the base and the upper cover are provided with welding ribs corresponding in position and contour, and the base and the upper cover are fixedly connected by welding; the welding ribs are two and correspond to the profiles of the low-pressure chamber and the high-pressure chamber respectively, and the welding ribs of the base and the upper cover form the low-pressure chamber and the high-pressure chamber after being welded.
3. The valve chamber cover that can avoid the re-certification according to claim 2, wherein the base and the upper cover are provided with a positioning portion between two welded ribs, at which the PCV valve is installed, in correspondence with position.
4. A valve chamber cover that can avoid the repeated authentication according to claim 1, 2 or 3, wherein the contour of the base is larger than that of the upper cover, and a fixing through hole is provided at the outer edge of the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020998891.5U CN212642899U (en) | 2020-06-04 | 2020-06-04 | Valve chamber cover capable of avoiding repeated authentication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020998891.5U CN212642899U (en) | 2020-06-04 | 2020-06-04 | Valve chamber cover capable of avoiding repeated authentication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212642899U true CN212642899U (en) | 2021-03-02 |
Family
ID=74789719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020998891.5U Active CN212642899U (en) | 2020-06-04 | 2020-06-04 | Valve chamber cover capable of avoiding repeated authentication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212642899U (en) |
-
2020
- 2020-06-04 CN CN202020998891.5U patent/CN212642899U/en active Active
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