Camshaft front end cover integrated with OCV (oil control valve) mounting hole

Abstract

The utility model discloses a camshaft front end cover integrated with an OCV valve mounting hole, and belongs to the technical field of engines. The design requirement that single and double VVT structures of an engine exist at the same time is met, and meanwhile the concept that the engine is compact in design is met. The cam bearing seat and the cam shaft front end cover are integrally connected, an upper oil hole is formed in the bottom face of the cam bearing seat, a transverse oil way communicated with the upper oil hole is arranged in the cam bearing seat, two vertical oil ways communicated with the transverse oil way are further arranged in the cam bearing seat, and two independent OCV valve mounting holes are formed in the cam shaft front end cover. The two OCV mounting holes are communicated with the two vertical oil ways in a one-to-one correspondence mode. According to the utility model, the OCV valve mounting hole is integrated on the front end cover of the camshaft, and the switching of single and double VVTs of engines of the same model can be realized through machining the OCV valve mounting hole, so that the higher corresponding speed of the VVT and the control of the cost are realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of engines, and in particular relates to a camshaft front end cover with an integrated OCV valve mounting hole. Background Art

[0002] Currently, there are two types of phaser control for gasoline engines, one is OCV valve control, and the other is centrally mounted; the OCV valve has low cost, but the phaser response is relatively slow; the mainstream installation point of the current OCV is on the synchronous chain cover or the valve chamber cover, both of which are made of aluminum alloy. In this way, the oil path between the OCV valve and the phaser is longer and the response is slower; a small number of them are installed on the cam bearing cover, and although the oil path is shorter, it cannot meet the needs of taking into account both single and double VVT ​​functions. Utility Model Content

[0003] The utility model aims to provide a camshaft front end cover with an integrated OCV valve mounting hole, which is used to solve the design requirements of the coexistence of single and double VVT ​​structures of the engine and meet the concept of compact engine design.

[0004] The technical solution adopted by the utility model is:

[0005] A camshaft front end cover with an integrated OCV valve mounting hole comprises a camshaft front end cover and a cam bearing seat; the cam bearing seat is integrally connected to the camshaft front end cover, an oiling hole is provided on the bottom surface of the cam bearing seat, a horizontal oil circuit connected to the upper oiling hole is provided inside the cam bearing seat, and two vertical oil circuits connected to the horizontal oil circuit are also provided inside the cam bearing seat, two independent OCV valve mounting holes are provided on the camshaft front end cover, and the two OCV valve mounting holes are connected to the two vertical oil circuits in a one-to-one correspondence.

[0006] Compared with the prior art, the utility model has the following beneficial effects:

[0007] The utility model integrates the OCV valve mounting hole into the front end cover of the camshaft, and can realize the switching of single and double VVT ​​of the same type of engine by machining the OCV valve mounting hole, thereby realizing a faster response speed of VVT and cost control. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the utility model;

[0009] Figure 2 It is a top view of the utility model;

[0010] Among them: 1. Camshaft front end cover; 2. Cam bearing seat; 3. Oiling hole; 4. Horizontal oil circuit; 5. Vertical oil circuit; 6. OCV valve installation hole. DETAILED DESCRIPTION

[0011] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0012] like Figure 1 , Figure 2 As shown, the utility model provides a camshaft front end cover with an integrated OCV valve mounting hole, comprising a camshaft front end cover 1 and a cam bearing seat 2; the cam bearing seat 2 is integrally connected to the camshaft front end cover 1, an upper oil hole 3 is provided on the bottom surface of the cam bearing seat 2, a horizontal oil passage 4 connected to the upper oil hole 3 is provided inside the cam bearing seat 2, and two vertical oil passages 5 connected to the horizontal oil passage 4 are also provided inside the cam bearing seat 2, and two independent OCV valve mounting holes 6 are provided on the camshaft front end cover 1, and the two OCV valve mounting holes 6 are connected to the two vertical oil passages 5 in a one-to-one correspondence.

[0013] Each of the OCV valve mounting holes 6 is located above the camshaft front end cover 1 and is perpendicular to the mating surface between the camshaft front end cover 1 and the cam bearing seat 2 .

[0014] The diameter of the OCV valve mounting hole 6 is greater than the diameter of the vertical oil passage 5 .

[0015] The engine oil enters the horizontal oil circuit 4 through the upper oil hole 3 below the cam bearing seat 2. The engine oil can reach the OCV valve installation hole 6 through two vertical oil circuits 5. The opening and closing of the OCV valve is controlled to adjust the engine oil to enter different oil distribution circuits, thereby controlling the phaser to make corresponding actions.

[0016] There are two independent OCV valve mounting holes 6 on the front end cover 1 of the camshaft, and there is no connection between the two. By selecting different machining contents, engine solutions of dual VVT, single VVT ​​on the intake side, and single VVT ​​on the exhaust side can be realized, thereby meeting the different vehicle condition requirements of the car manufacturer.

[0017] The OCV valve mounting hole 6 and the horizontal oil circuit 4 in the cam bearing seat 2 are connected by a vertical oil circuit 5. By controlling the length of the vertical oil circuit 5, the height of the OCV valve relative to the engine can be adjusted in the vertical direction without changing the OCV valve structure, thereby preventing the OCV valve from becoming the highest point of the entire engine. The diameter of the OCV valve mounting hole 6 is much larger than the two vertical oil circuits 5 connected to it in the cam bearing seat. Therefore, the OCV valve mounting hole 6 can have a larger moving space to avoid peripheral components and realize the compactness of the engine at this location.

[0018] Combined with the cam bearing seat 2, the camshaft front end cover 1 can be machined to meet the different control needs of single and double VVT ​​of the same engine; the position of the OCV valve installation hole 6 can be adjusted separately to avoid its peripheral parts, thereby achieving a compact design purpose.

[0019] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A camshaft front end cover with an integrated OCV valve mounting hole, characterized in that: It comprises a camshaft front end cover (1) and a cam bearing seat (2); the cam bearing seat (2) is integrally connected to the camshaft front end cover (1); an oiling hole (3) is provided on the bottom surface of the cam bearing seat (2); a horizontal oil passage (4) connected to the oiling hole (3) is provided inside the cam bearing seat (2); two vertical oil passages (5) connected to the horizontal oil passage (4) are also provided inside the cam bearing seat (2); two independent OCV valve mounting holes (6) are provided on the camshaft front end cover (1); the two OCV valve mounting holes (6) are connected to the two vertical oil passages (5) in a one-to-one correspondence.

2. The camshaft front end cover with integrated OCV valve mounting hole according to claim 1, characterized in that: Each of the OCV valve mounting holes (6) is located above the camshaft front end cover (1) and is perpendicular to the mating surface between the camshaft front end cover (1) and the cam bearing seat (2).

3. The camshaft front end cover with integrated OCV valve mounting hole according to claim 1, characterized in that: The diameter of the OCV valve mounting hole (6) is greater than the diameter of the vertical oil circuit (5), so that the OCV valve mounting hole (6) has a larger moving space.

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