CN212583835U

CN212583835U - Timing cover plate

Info

Publication number: CN212583835U
Application number: CN202021340861.1U
Authority: CN
Inventors: 祖炳锋; 张蒙; 张辰
Original assignee: Tianjin Terruijie Power Technology Co ltd
Current assignee: Tianjin Terruijie Power Technology Co ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2021-02-23
Anticipated expiration: 2030-07-09

Abstract

The utility model discloses a timing apron, include: the sealed face processing of its top of apron body is the arcwall face, and the arc design of this arcwall face is used for the holding solenoid valve. And the electromagnetic valve mounting flange is arranged in the arc-shaped surface of the cover plate body, wherein the arc-shaped surface of the cover plate body is matched with the arc-shaped surface of the corresponding part of the electromagnetic valve mounting flange, and the electromagnetic valve is integrated with the cover plate body through the electromagnetic valve mounting flange. And the pressure release valve mounting hole is arranged below the inner side of the cover plate body and is used for realizing the integration of the pressure release valve and the cover plate body. And the engine oil pump oil cavity is arranged below the inner side of the cover plate body and is integrally formed with the cover plate body. The utility model provides a this apron in right time will lap body and engine oil pump oil pocket, relief valve mounting hole integral casting, engine oil pump oil pocket internal assembly machine oil pump stator, rotor to design into the arcwall face structure with the apron top, guarantee the installation demand of solenoid valve, but the at utmost realizes integrating.

Description

Timing cover plate

Technical Field

The utility model relates to a timing system field especially relates to a timing apron suitable for put formula variable valve timing system (VVT) in.

Background

At present, the front end of a gasoline engine is in transmission at the right time by adopting a timing chain, and because the return oil at the front end of a cylinder cover and the chain splash with oil, a timing cover plate is required to be used for sealing to prevent oil leakage. Because the internal crankshaft and the camshaft rotate at high speed to generate multi-order vibration, the timing cover plate is required to have a high mode, and plays a role in sound insulation and noise reduction. The timing cover plate is generally arranged on the outermost side of the engine, and because the number of external accessories of the engine is large, a plurality of mounting structures are designed on the outer side, and the manufacturing difficulty of the timing cover plate is increased. The design aim of the current timing cover plate is to integrate with each part as much as possible, reduce the installation process and the production cost and reduce the space required by the arrangement of the whole machine. In order to achieve the purpose, a belt idler pulley or a tension pulley mounting hole is generally only designed on the outer side of a traditional timing cover plate, a suspension structure is also designed on a transverse engine, the whole structure is simple, and the integration degree is relatively low; the traditional cover plate oil seal oil return channel is two crossed inclined processing oil channels, and the processing technology is complex.

In realizing the utility model discloses an in-process, the applicant finds that above-mentioned prior art has following technical defect, and when putting VVT in the engine adoption, traditional VVT relatively need install VVT solenoid valve (hereinafter for short the solenoid valve) at the front end, and the solenoid valve must be concentric with the camshaft, because the sealed face of traditional apron top is kept level with the camshaft central line, can't realize the installation of solenoid valve. And when the engine oil pump adopts crankshaft direct transmission, an integrated oil pump is not provided, and redesign is needed.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The object of the utility model is to provide a novel apron structure in right time to at least part solves above technical problem.

(II) technical scheme

The utility model provides a cover plate structure in right time, include: the sealed face processing of its top of apron body is the arcwall face, and the arc design of this arcwall face is used for the holding solenoid valve.

In some embodiments, the timing cover plate further comprises: and the electromagnetic valve mounting flange is arranged in the arc-shaped surface of the cover plate body, wherein the arc-shaped surface of the cover plate body is matched with the arc-shaped surface of the corresponding part of the electromagnetic valve mounting flange, and the electromagnetic valve is integrated with the cover plate body through the electromagnetic valve mounting flange.

In some embodiments, the timing cover plate further comprises: and the pressure relief valve mounting hole is arranged below the inner side of the cover plate body and is used for realizing the integration of the pressure relief valve and the cover plate body.

In some embodiments, the timing cover plate further comprises: and the engine oil pump oil cavity is arranged below the inner side of the cover plate body and is integrally formed with the cover plate body.

In some embodiments, an oil pump rotor is assembled in the oil pump cavity, and an oil pump cover is assembled on one side of the oil pump cavity; the engine oil pump oil cavity, the engine oil pump rotor and the engine oil pump cover are combined to form the rotor type engine oil pump integrated on the cover plate body.

In some embodiments, the engine oil pump cover is located on the inner side of the cover plate body; and the oil seal mounting hole is arranged on the outer side of the cover plate body, so that the integration of an oil seal and the cover plate body is realized.

In some embodiments, the timing cover plate further comprises: the casting oil groove is arranged at the bottom side of the cover plate body; and the first port of the oil return channel is arranged below the inner side of the oil seal mounting hole, and the second port of the oil return channel is communicated with the casting oil groove.

In some embodiments, the second port of the oil return channel is communicated with the oil sump below the cover plate body through a cast oil groove, and a steel ball is further included at the second port to realize sealing.

In some embodiments, the timing cover plate further comprises: the idle wheel lug is arranged on the outer side of the cover plate body.

In some embodiments, the timing cover plate described above is used in a mid-mount variable valve timing system.

(III) advantageous effects

The utility model provides a this apron in right time compares with the design of traditional apron, has following beneficial effect:

(1) the top of the cover plate is designed into an arc-shaped surface structure, so that the installation requirement of the electromagnetic valve is met;

(2) the cover plate body, an oil cavity of an engine oil pump and a mounting hole of a pressure release valve are integrally cast, and an oil pump stator and a rotor are assembled inside, so that integration is realized to the maximum extent;

(3) the cover plate body is integrated with various mounting structures and integrally formed by die casting, so that the number of part dies is reduced, the mounting precision of each part is improved, the manufacturing and processing processes are simplified, and the overall layout is more compact;

(4) the machining process of the oil return channel structure is optimized, and the machining difficulty is reduced.

Drawings

Fig. 1 is an internal structure diagram of a timing cover plate according to an embodiment of the present invention;

fig. 2 is an external structural view of a timing cover plate according to an embodiment of the present invention;

fig. 3 is an overall structural view of an oil pump in the timing cover plate according to an embodiment of the present invention;

fig. 4 is an overall structural diagram of an oil return passage in the timing cover plate according to an embodiment of the present invention.

Reference numerals and descriptions:

cover plate body 1 oil pump 2

Relief valve mounting hole 3 oil seal mounting hole 4

Idler lug 5 electromagnetic valve mounting flange 6

Top surface arc processing surface 7 oil pump outer rotor 8

Oil pump inner rotor 9 oil pump cover 10

Oil return channel 11 casting oil groove 12

Steel ball 13

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.

In a traditional timing cover plate, the top surface seal is a plane, and an oil seal oil return channel is designed to be processed in an inclined mode. The inventor finds that a planar sealing surface at the top end of a traditional cover plate cannot realize the installation of the electromagnetic valve, an oil passage obliquely processed in the traditional cover plate is complex in design, and the integrated oil pump is not arranged below the cover plate.

An embodiment of the utility model provides a timing apron suitable for put VVT in, include:

the sealed face processing of its top of apron body is the arcwall face, and the arc design of this arcwall face is used for the holding solenoid valve.

Further, design solenoid valve mounting flange for it is integrated with the apron body with the solenoid valve, simultaneously, set up the arcwall face of apron body and the arcwall face phase-match of solenoid valve mounting flange corresponding part in this embodiment. It should be noted that the arc-shaped surface of the cover plate body and the arc-shaped surface of the corresponding portion of the electromagnetic valve mounting flange can also be incompletely matched as long as the accommodating space formed by the arc-shaped surface of the cover plate body can completely cover the electromagnetic valve mounting flange.

Through the above embodiment of designing the top end of the cover plate into the arc-shaped surface, the integration of the electromagnetic valve and the cover plate main body can be realized. And wherein, the cambered surface is integrally processed and formed, and is sealed by a rubber strip.

In some embodiments, the pressure relief valve mounting hole is formed in the lower portion of the inner side of the cover plate body, so that the pressure relief valve and the cover plate body are integrated. Meanwhile, the oil cavity of the engine oil pump is arranged below the inner side of the cover plate body and is integrally formed with the cover plate body. The oil pump in the embodiment is a rotor type oil pump, and is obtained by assembling an oil pump rotor in an oil chamber of the oil pump and assembling an oil pump cover on one side of the oil chamber of the oil pump, wherein the oil pump is formed by combining the oil chamber of the oil pump, the oil pump rotor and the oil pump cover.

Preferably, the engine oil pump cover is arranged on the inner side of the cover plate body; and an oil seal mounting hole is arranged on the outer side of the cover plate body, so that the integration of the oil seal and the cover plate body is realized.

In this embodiment, for cooperating with this integrated cover plate structure, further optimization and improvement have been made to the oil duct design in the apron, and this oil duct after improving includes: the casting oil groove is arranged at the bottom side of the cover plate body; and the first port of the oil return channel is arranged below the inner side of the oil seal mounting hole, and the second port of the oil return channel is communicated with the casting oil groove. Preferably, in order to simplify the process, the oil return channel is formed by drilling directly upwards from the lower part of the cover plate main body, namely the second port is communicated with an oil sump below the cover plate main body through a cast oil groove, and then a steel ball is arranged below the oil return channel to realize sealing.

Through the simplified oil passage design, the processing technology is simplified; finally, the integrated cover plate integrating the pressure release valve, the oil pump and the electromagnetic valve can be simultaneously realized.

In some embodiments, the outer side of the cover plate body is also provided with idler pulleys at different positions so as to match the arrangement requirements of belts of different additional gear trains.

Wherein the oil pump is associated with the pressure relief valve. The oil pump conveys the oil in the oil pan to a main oil duct in the engine through high-speed rotation, and meanwhile, the pressure of the oil is improved. The pressure relief valve is arranged at an engine oil outlet, a spring is arranged in the pressure relief valve, the pressure relief valve is in a closed state under a general condition, and when the oil pressure is too high, the pressure relief valve overcomes the spring force to open so as to perform oil drainage; when the oil pressure is normal, the closed state is recovered, and the protection effect on the internal functional components of the engine is achieved. The electromagnetic valve controls the engine VVT, when the electromagnetic valve is electrified, a valve core of the electromagnetic valve is sucked up, and the valve is opened, so that the engine VVT is controlled to work; when the power is cut off, the valve core is automatically closed under the action of the spring.

Fig. 1 schematically shows the internal structure diagram of the timing cover plate provided by the embodiment of the present invention, fig. 2 schematically shows the external structure diagram of the timing cover plate provided by the embodiment of the present invention, which comprises a cover plate body 1 integrated with a solenoid valve, an oil pump and a pressure release valve at the same time, and is formed by casting and processing the whole body. Specifically, the method comprises the following steps: the electromagnetic valve is integrated below the arc-shaped processing surface 7 of the top surface of the cover plate body 1 through an electromagnetic valve mounting flange 6; the oil pump 2 is integrated below the inner side of the cover plate body 1; the pressure relief valve is integrated below the inner side of the cover plate body 1 through the pressure relief valve mounting hole 3; meanwhile, an idler lug 5 is arranged on the outer side of the cover plate body 1 and used for realizing the work of a gear train belt.

Fig. 3 schematically shows the overall structure diagram of the oil pump in the timing cover plate provided by the embodiment of the present invention. The oil pump is a rotor type oil pump, and in the embodiment, the outer oil pump rotor 8 and the inner oil pump rotor 9 are both assembled on an oil pump cavity in the cover plate body 1. An oil pump cover 10 is arranged on one side of the oil pump rotor and the inner side of the cover plate body to realize sealing; an oil seal is fixedly arranged on the other side of the oil pump rotor and the outer side of the cover plate body through an oil seal mounting hole 4 (as shown in figure 2).

Fig. 4 is a sectional view taken along a-a in fig. 2, schematically illustrating an overall structure of an oil return channel in a timing cover plate according to an embodiment of the present invention. Referring to fig. 2 and 4, an oil return channel 11 is designed below the inner side of the oil seal mounting hole 4, and in this embodiment, a vertically machined oil channel is directly formed by drilling from the bottom of the cover plate body to the upper direction, and the vertically machined oil channel simultaneously penetrates through a casting oil groove 12 at the bottom of the cover plate body, i.e. communication between the oil return channel 11 and the casting oil groove 12 is formed, and a steel ball 13 is arranged at the bottom of the oil return channel 11 to form a seal, so as to prevent engine oil from directly leaking to the outside of the engine vertically.

Through the embodiment, the integrally formed cover plate structure which integrates the electromagnetic valve, the oil pump and the pressure release valve on one cover plate body is obtained, and integration of the cover plate structure is realized to the greatest extent. Meanwhile, the oil return channel is optimized, and the process difficulty of the oil return channel is reduced.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A timing cover plate comprising:

the top end sealing surface of the cover plate body is processed into an arc-shaped surface, and the arc-shaped surface is designed to accommodate the electromagnetic valve.

2. The timing cover plate of claim 1, further comprising:

solenoid valve mounting flange set up in the arcwall face of apron body, wherein, the arcwall face of apron body with the arcwall face phase-match of solenoid valve mounting flange corresponding part, just the solenoid valve passes through solenoid valve mounting flange realize with the integration of apron body.

3. The timing cover plate of claim 1, further comprising:

and the pressure relief valve mounting hole is arranged below the inner side of the cover plate body and is used for realizing the integration of the pressure relief valve and the cover plate body.

4. The timing cover plate of claim 1, further comprising:

and the engine oil pump oil cavity is arranged below the inner side of the cover plate body and is integrally formed with the cover plate body.

5. The timing cover plate according to claim 4, wherein an oil pump rotor is fitted in the oil pump oil chamber, and an oil pump cover is fitted on one side of the oil pump oil chamber; the engine oil pump oil cavity, the engine oil pump rotor and the engine oil pump cover are combined to form the rotor type engine oil pump integrated on the cover plate body.

6. The timing cover plate of claim 5, further comprising:

the engine oil pump cover is positioned on the inner side of the cover plate body; and

the oil seal mounting hole is formed in the outer side of the cover plate body, and oil seals are integrated with the cover plate body.

7. The timing cover plate of claim 6, further comprising:

the casting oil groove is arranged at the bottom side of the cover plate body; and

and a first port of the oil return channel is arranged below the inner side of the oil seal mounting hole, and a second port of the oil return channel is communicated with the casting oil groove.

8. The timing cover plate according to claim 7 wherein said oil return passage second port communicates with an oil sump below said cover plate body through said cast oil sump, further comprising a steel ball at said second port to effect sealing.

9. The timing cover plate according to any one of claims 1 to 8, further comprising:

the idle wheel lug is arranged on the outer side of the cover plate body.

10. The timing cover plate of claim 9, wherein the timing cover plate is used in a mid-mount variable valve timing system.