CN211422782U

CN211422782U - Compact arrangement structure of VVL engine oil control valve

Info

Publication number: CN211422782U
Application number: CN201921920747.3U
Authority: CN
Inventors: 李伟; 陈刚
Original assignee: AVL List Technical Center Shanghai Co Ltd
Current assignee: AVL List Technical Center Shanghai Co Ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-09-04
Anticipated expiration: 2029-11-08

Abstract

The utility model discloses a compact arrangement structure of VVL machine oil control valve, include: the cylinder cover comprises a cylinder cover body, a cylinder cover top surface, a mounting hole, an oil inlet channel, a control oil channel, an oil return hole, a VVL engine oil control valve and a plurality of air inlet channels arranged on the cylinder cover body, wherein the VVL engine oil control valve is arranged at positions C12, C23 and C34 above the adjacent air inlet channels of the cylinder cover body, and is obliquely inserted into the cylinder cover body at an inclination angle D1; when the distance D4 between the end face of the VVL engine oil control valve and the bottom of the mounting hole is used for being installed in the mounting hole, an oil return cavity, a control oil cavity and an oil inlet cavity are formed, the oil return hole is communicated with the oil return cavity, the control oil channel is communicated with the control oil cavity, the oil inlet channel is communicated with the oil inlet cavity, and the mounting hole is communicated with the oil inlet channel, the control oil channel and the oil return hole. The utility model discloses on the basis that satisfies variable valve lift function, realize compact arrangement, simple structure and fall the cost purpose.

Description

Compact arrangement structure of VVL engine oil control valve

Technical Field

The utility model relates to a compact arrangement structure of VVL engine oil control valve relates to variable valve lift technique (VVL), belongs to gasoline engine's energy saving and emission reduction technical field.

Background

In the whole working range, the gasoline engine has ideal valve lift requirement: under the working conditions of high rotating speed and high load, the air inflow is increased by a large valve lift so as to realize large power and torque output; under the working conditions of medium and low rotating speed and medium and low load, small valve lift is needed to reduce pumping loss so as to reduce oil consumption and emission. The fixed valve lift is a conventional technology adopted by a traditional gasoline engine, the performance, the oil consumption and the emission of the gasoline engine under all working conditions are difficult to be effectively considered, and a common compromise treatment method is adopted, namely the performance, the oil consumption and the emission under some working conditions are emphatically optimized according to the specific application condition of the gasoline engine, and the performance, the oil consumption and the emission under other working conditions cannot be effectively optimized. The variable valve lift technology meets the requirements of a gasoline engine on the valve lift in the whole working range, is still continuously developed and perfected, is more and more widely applied and practiced in the market, and has various variable valve lift technologies such as a full variable type, a two-section type and a three-section type, but most of the variable valve lift technologies are complex in structure, large in occupied installation space, large in arrangement difficulty on the gasoline engine and high in cost.

The VVL engine oil control valve is one of key parts of certain variable valve lift technologies, and the basic structure of the VVL engine oil control valve is an electric control hydraulic valve, and the engine oil flow direction is changed through the position of an electric control internal valve core, so that the requirement of variable valve lift is further met. The gasoline engine has many parts and strict boundary limitation, and the difficulty in reasonably arranging the VVL engine oil control valve is higher on the basis of coordinating and matching surrounding parts. An oil inlet channel, a control oil channel and an oil return hole are required to be organized around the VVL engine oil control valve, an end oil inlet type and a radial oil inlet type are provided according to different oil inlet modes, the inner side of a cylinder cover, the top of the cylinder cover and the air inlet side of the cylinder cover are arranged at possible installation positions of the VVL engine oil control valve, and the VVL engine oil control valve is installed on a transition joint in the conventional way due to space limitation, so that the number of parts is increased, and the processing and assembling cost is increased. For this reason, a corresponding technical scheme needs to be designed for solution.

Disclosure of Invention

The utility model discloses a to the not enough of prior art existence, provide the compact scheme of arranging of VVL engine oil control valve, on the basis that satisfies variable valve lift function, realize compact arrangement, simple structure and reduce cost purpose.

In order to solve the above problems, the utility model adopts the following technical proposal:

a compact arrangement of a VVL oil control valve, comprising: the cylinder cover comprises a cylinder cover body, a cylinder cover top surface, a mounting hole, an oil inlet channel, a control oil channel, an oil return hole, a VVL engine oil control valve and a plurality of air inlet channels arranged on the cylinder cover body, wherein the VVL engine oil control valve is arranged at positions C12, C23 and C34 above the adjacent air inlet channels of the cylinder cover body, and is obliquely inserted into the cylinder cover body at an inclination angle D1 and fixed through bolts;

the oil return structure comprises a VVL engine oil control valve, an oil return cavity, a control oil cavity and an oil inlet cavity, wherein the distance D4 between the end face of the VVL engine oil control valve and the bottom of a mounting hole is used for being filled into the mounting hole to form three independent cavities, the three independent cavities are respectively the oil return cavity, the control oil cavity and the oil inlet cavity and are sequentially located below the same axis of the VVL engine oil control valve, the oil return hole is communicated with the oil return cavity, the control oil passage is communicated with the control oil cavity, the oil inlet channel is communicated with the oil inlet cavity, and the mounting hole is communicated with the oil.

As an improvement of the above technical solution, the compact arrangement structure of the VVL oil control valve further includes a 2 nd cylinder gasoline engine, a 3 rd cylinder gasoline engine, and a 4 th cylinder gasoline engine, which are used in cooperation, the positions C12, C23, and C34 refer to an overlapping region of a region between adjacent intake passages and a region above the intake passages, the positions C12, C23, and C34 are suitable for the 4 th cylinder gasoline engine, the positions C12 and C23 are suitable for the 3 rd cylinder gasoline engine, and the position C12 is suitable for the 2 nd cylinder gasoline engine.

As a modification of the above technical solution, the inclination angle D1 is an angle between the center of the VVL oil control valve and the top surface of the cylinder head, and the inclination angle D1 is in the range of 40 DEG to D1 to 85 deg.

As an improvement of the above technical solution, the control oil passage is arranged above the oil inlet passage by a center distance D2, the center distance D2 refers to a vertical distance between the control oil passage and the center of the oil inlet passage, and the center distance D2 ranges from: d2 is more than or equal to 8mm and less than or equal to 13 mm.

As an improvement of the above technical solution, the oil return hole is arranged according to an inclination angle D3, the inclination angle D3 is an angle between the center of the oil return hole and the top surface of the cylinder head, and the range of the inclination angle D3 is as follows: d3 is more than or equal to 90 degrees and less than or equal to 120 degrees.

As an improvement of the technical scheme, the distance D4 refers to the distance between the end face of the VVL engine oil control valve and the bottom of the mounting hole, and the range of the distance D4 is that D4 is not more than 1mm and not more than 11 mm.

Compared with the prior art, the utility model discloses an implement the effect as follows:

(1) the upper position between the adjacent air inlet channels of the cylinder cover is fully utilized, and the VVL engine oil control valve is obliquely inserted into the cylinder cover at an optimized inclination angle.

(2) The oil inlet channel, the control oil channel and the oil return hole are arranged close to the VVL engine oil control valve and communicated with the mounting hole through a machining method, and no transition joint is arranged.

(3) Compact arrangement, simple structure and low cost.

Drawings

Fig. 1 is a side view structural diagram of an air inlet passage of a compact arrangement structure of a VVL engine oil control valve according to the present invention;

fig. 2 is a cross-sectional view of a compact arrangement of the VVL oil control valve of the present invention;

fig. 3 is a side view of an intake duct with a compact layout structure of the VVL engine oil control valve implemented on a 4-cylinder gasoline engine according to the present invention;

fig. 4 is a cross-sectional view of a compact arrangement structure of the VVL oil control valve implemented on a 4-cylinder gasoline engine of the present invention.

Detailed Description

The present invention will be described with reference to specific embodiments.

Example (b): as shown in fig. 1-4: the compact arrangement structure of VVL machine oil control valve includes: the cylinder cover comprises a cylinder cover body 1, a cylinder cover top surface 2, a mounting hole 3, an oil inlet channel 4, a control oil channel 5, an oil return hole 6, a VVL engine oil control valve 7 and a plurality of air inlet channels 8 arranged on the cylinder cover body, wherein the VVL engine oil control valve 7 is arranged at positions C12, C23 and C34 above the adjacent air inlet channels 8 of the cylinder cover body 1, and the VVL engine oil control valve 7 is obliquely inserted into the cylinder cover body 1 at an inclined angle D1 and is fixed by bolts 9; when the distance D4 between the end surface of the VVL engine oil control valve 7 and the bottom of the mounting hole 3 is used for being installed in the mounting hole 3, three independent cavities are formed, wherein the three independent cavities are respectively an oil return cavity 61, a control oil cavity 51 and an oil inlet cavity 41 and are sequentially positioned below the same axis of the VVL engine oil control valve 7; the oil return hole 6 is communicated with the oil return cavity 61, the control oil passage 5 is communicated with the control oil cavity 51, the oil inlet passage 4 is communicated with the oil inlet cavity 41, and the mounting hole 3 is communicated with the oil inlet passage 4, the control oil passage 5 and the oil return hole 6. In addition, the compact arrangement structure of the VVL oil control valve 7 further includes a 2 nd cylinder gasoline engine, a 3 rd cylinder gasoline engine, and a 4 th cylinder gasoline engine, which are used in cooperation, where positions C12, C23, and C34 refer to an overlapping region of a region between adjacent intake passages 8 and a region above the intake passage 8, positions C12, C23, and C34 are applied to the 4 th cylinder gasoline engine, positions C12 and C23 are applied to the 3 rd cylinder gasoline engine, and position C12 is applied to the 2 nd cylinder gasoline engine.

In the present embodiment, the inclination angle D1 is the angle between the center of the VVL oil control valve 7 and the head surface 2 of the cylinder head, and the inclination angle D1 is in the range of 40 ° to D1 to 85 °.

In this embodiment, the control oil passage 5 is disposed above the oil inlet passage 4 by a center distance D2, the center distance D2 is a vertical distance between the control oil passage 5 and the center of the oil inlet passage 4, and the center distance D2 is within a range: d2 is more than or equal to 8mm and less than or equal to 13 mm.

In this embodiment, the oil return hole 6 is set according to an inclination angle D3, the inclination angle D3 is an angle between the center of the oil return hole 6 and the top surface 2 of the cylinder head, and the range of the inclination angle D3 is: d3 is more than or equal to 90 degrees and less than or equal to 120 degrees.

In the present embodiment, the distance D4 is a distance between the end surface of the VVL oil control valve 7 and the bottom of the mounting hole 3, and the range of the distance D4: d4 is more than or equal to 1mm and less than or equal to 11 mm.

The foregoing is a detailed description of the invention in connection with specific embodiments thereof, and it is not intended that the invention be limited to these specific embodiments. To the utility model belongs to the technical field of technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses the scope of protection.

Claims

1. A compact arrangement of a VVL oil control valve, characterized in that: the method comprises the following steps: the cylinder cover comprises a cylinder cover body (1), a cylinder cover top surface (2), a mounting hole (3), an oil inlet channel (4), a control oil channel (5), an oil return hole (6), a VVL (variable valve) engine oil control valve (7) and a plurality of air inlet channels (8) arranged on the cylinder cover body, wherein the VVL engine oil control valve (7) is arranged at positions C12, C23 and C34 above the adjacent air inlet channels (8) of the cylinder cover body (1), and the VVL engine oil control valve (7) is obliquely inserted into the cylinder cover body (1) at an inclined angle D1 and is fixed through bolts (9);

when installing into mounting hole (3) with VVL machine oil control valve (7) terminal surface and mounting hole (3) bottom distance D4 after form three independent cavity, three independent cavity is oil return chamber (61), control oil pocket (51) and oil feed chamber (41) respectively and is located in proper order the below of the same axis of VVL machine oil control valve (7), oil return hole (6) with oil return chamber (61) intercommunication, control oil duct (5) with control oil pocket (51) intercommunication, oil feed way (4) with oil feed chamber (41) intercommunication, just mounting hole (3) and oil feed way (4), control oil duct (5) and oil return hole (6) intercommunication.

2. The compact arrangement of the VVL oil control valve of claim 1, wherein: the compact arrangement structure of the VVL engine oil control valve (7) further comprises a 2 nd cylinder gasoline engine, a 3 rd cylinder gasoline engine and a 4 th cylinder gasoline engine which are matched for use, positions C12, C23 and C34 are overlapped areas of an area between adjacent air inlet channels (8) and an area above the air inlet channels (8), positions C12, C23 and C34 are suitable for the 4 th cylinder gasoline engine, positions C12 and C23 are suitable for the 3 rd cylinder gasoline engine, and position C12 is suitable for the 2 nd cylinder gasoline engine.

3. The compact arrangement of the VVL oil control valve of claim 1, wherein: the inclination angle D1 refers to an angle between the center of the VVL engine oil control valve (7) and the top surface (2) of the cylinder head, and the range of the inclination angle D1 is more than or equal to 40 degrees and less than or equal to 85 degrees and D1.

4. The compact arrangement of the VVL oil control valve of claim 1, wherein: the control oil channel (5) is arranged above the oil inlet channel (4) at a central distance D2, the central distance D2 is a vertical distance between the control oil channel (5) and the center of the oil inlet channel (4), and the central distance D2 ranges from: d2 is more than or equal to 8mm and less than or equal to 13 mm.

5. The compact arrangement of the VVL oil control valve of claim 1, wherein: the oil return hole (6) is arranged according to an inclination angle D3, the inclination angle D3 is an angle between the center of the oil return hole (6) and the top surface (2) of the cylinder cover, and the range of the inclination angle D3 is as follows: d3 is more than or equal to 90 degrees and less than or equal to 120 degrees.

6. The compact arrangement of the VVL oil control valve of claim 1, wherein: the distance D4 refers to the distance between the end face of the VVL engine oil control valve (7) and the bottom of the mounting hole (3), and the range of the distance D4 is that D4 is not less than 1mm and not more than 11 mm.