CN113638787B

CN113638787B - Engine

Info

Publication number: CN113638787B
Application number: CN202111206673.9A
Authority: CN
Inventors: 王进峰; 李寒磊; 张晏源; 邱洋
Original assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Current assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-02-08
Anticipated expiration: 2041-10-18
Also published as: CN113638787A

Abstract

The present invention provides an engine, comprising: a body provided with a main oil gallery and a first oil gallery; one end of the oil cooler is communicated with the first oil duct, and the other end of the oil cooler is communicated with the main oil duct; an oil cooler cover including a first cavity, the oil cooler cover being secured to the engine block, the oil cooler being located within the first cavity; the engine oil cooler cover is provided with a second oil duct, the second oil duct comprises a first oil port and a second oil port, the first oil port is communicated with the first oil duct, the second oil port is communicated with the main oil duct, a control valve is arranged between the first oil port and the second oil port, and the control valve is opened when the oil pressure of the engine oil in the second oil duct reaches a rated value. According to the invention, the control valve and the second oil duct are integrated on the oil cooler cover, so that the hydraulic control oil path is simplified, the stability of a hydraulic system of the engine is improved, the effective operation of the engine is ensured, and the reliability of the engine is improved.

Description

Engine

Technical Field

The invention relates to the technical field of hydraulic control, in particular to an oil cooler cover of an integrated control valve and an oil duct.

Background

In the prior art, the stability of a hydraulic system of an engine is ensured and the effective operation of the engine is ensured. The oil cooler assembly comprises a base for fixing the oil cooler, a control valve and an oil duct are integrated in the base, and the base is fixed on the machine body. An oil cooler cover seal is also required to be arranged outside the oil cooler, and the oil cooler cover is fixed on the base. In other prior art, the oil cooler may also be secured to the oil cooler cover by a threaded connection. The engine oil firstly enters the engine oil cooler cover and then enters the engine oil cooler, and after being cooled, the engine oil returns to the engine body through an oil outlet channel in the engine oil cooler cover, so that the oil path is complex.

The technical scheme has the problems of complex structure, more gaps and more oil leakage points. Therefore, there is a need for an engine with a simple and easily machined hydraulic control gallery to overcome the above-mentioned disadvantages.

Disclosure of Invention

The invention aims to provide an engine with a hydraulic control oil passage, which has the advantages of simple structure, convenient processing and less oil leakage points.

According to an aspect of the present invention, there is provided an engine comprising:

a body provided with a main oil gallery and a first oil gallery;

one end of the oil cooler is communicated with the first oil duct, and the other end of the oil cooler is communicated with the main oil duct;

an oil cooler cover including a first cavity, the oil cooler cover being secured to the engine block, the oil cooler being located within the first cavity;

the engine oil cooler cover is provided with a second oil duct, the second oil duct comprises a first oil port and a second oil port, the first oil port is communicated with the first oil duct, the second oil port is communicated with the main oil duct, a control valve is arranged between the first oil port and the second oil port, and the control valve is opened when the oil pressure of the engine oil in the second oil duct reaches a rated value.

Preferably, the engine oil cooler cover is further provided with a third oil port, the third oil port is communicated with the engine body, and a pressure release valve is arranged between the third oil port and the second oil duct.

Preferably, the second oil passage is arranged in the horizontal direction and below the first cavity, and the control valve and the pressure release valve are coaxially arranged in the second oil passage.

Preferably, the second oil duct is a through hole, the second oil duct includes a first opening and a second opening respectively located at two axial ends, the control valve is installed into the second oil duct from the first opening, a sealing plug for sealing is arranged at the first opening, and the first oil port is located between the sealing plug and the control valve.

Preferably, the second opening part is located to the relief valve, the third hydraulic fluid port is located the pressure relief valve radially to the outside, the relief valve includes the oil inlet that sets up along the second oil duct axial and follows the radial oil-out that sets up of second oil duct, oil inlet intercommunication second oil duct, oil-out intercommunication third hydraulic fluid port is equipped with the ball valve core between oil inlet and the oil-out, pressure relief valve part is located in the second oil duct, the relief valve still includes the sealing part that is used for sealing the second opening and is located the engine oil cooler lid outside.

Preferably, the oil cooler includes a mounting plate, the oil cooler is fixed to the machine body through the mounting plate, the oil cooler is located between the machine body and an oil cooler cover, and the oil cooler cover are in a non-contact arrangement.

Preferably, the engine body is further provided with a filter base, the filter base and the engine oil cooler cover are located on the same side of the engine body, the filter base is arranged below the engine oil cooler cover, the filter base is provided with a fourth oil port, and the fourth oil port is communicated with the first oil duct.

Preferably, the first oil duct extends upward from the lower end of the machine body along the vertical direction, the lower end of the first oil duct is arranged in a sealing manner, and the first oil port is located right above the fourth oil port.

Preferably, the machine body is further provided with a third oil duct and a fourth oil duct, the third oil duct is communicated with the oil cooler and the main oil duct, and the fourth oil duct is communicated with the second oil port and the third oil duct.

Preferably, the third oil duct extends along the horizontal direction, the fourth oil duct extends upwards from the lower end of the machine body along the vertical direction, and the lower end of the fourth oil duct is in a sealed arrangement.

Compared with the prior art, the engine provided by the invention has the following beneficial effects:

the hydraulic control oil duct has simple structure and easy processing. The integrated level is high, and the accessory is few, and assembly structure is inseparable, and the oil leak is few, and hydraulic control effect is stable.

Drawings

The invention is described in further detail below with reference to the following figures and detailed description:

FIG. 1 is a partial perspective view of the engine of the present invention;

FIG. 2 is a partial cross-sectional view of the engine of the present invention;

FIG. 3 is an enlarged fragmentary view of the control valve of the present invention;

FIG. 4 is an enlarged view of a portion of the pressure relief valve of the present invention;

FIG. 5 is a cross-sectional view taken along the line A-A in FIG. 2;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 7 is a cross-sectional view of an oil cooler cover of the present invention;

fig. 8 is a perspective view of an oil cooler and an oil cooler cover according to the present invention.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

Referring to fig. 1, the present invention discloses an engine 100 including a body 1, an oil cooler 2, and an oil cooler cover 3. The oil cooler 2 is fixed to one side in the longitudinal direction of the machine body 1 by a mounting plate 21. The oil cooler cover 3 covers the oil cooler 2, and the oil cooler cover 3 is fixed on the machine body 1. The oil cooler cover 3 and the machine body 1 are provided with sealing rings to prevent leakage. The technical scheme of the hydraulic control disclosed and protected by the invention takes the engine 100 as an embodiment, and the technical scheme and the research and development idea thereof can also be applied to other hydraulic systems.

Referring to fig. 2, the oil cooler cover 3 is provided with a second oil passage 32, and the second oil passage 32 is provided with a first oil port 321, a control valve 33, a second oil port 322, and a relief valve 34 therein. The second oil passage 32 extends in the horizontal direction and is located below the oil cooler 2, the control valve 33 is disposed between the first oil port 321 and the second oil port 322, and the second oil port 322 is located between the control valve 33 and the relief valve 34. The control valve 33 and the relief valve 34 are each provided coaxially with the second oil passage 32.

Referring to fig. 3, the control valve 33 includes a first valve body 331, a T-shaped valve core 332, and a first spring 333, the first spring 333 applies an elastic force to the T-shaped valve core 332 from the second oil port 322 toward the first oil port 321, and the T-shaped valve core 332 is also subjected to an oil pressure generated by the oil from the side of the first oil port 321. When the oil pressure is small, the control valve 33 is closed, and when the force generated by the oil pressure is greater than the elastic force of the first spring 333, the control valve 33 is opened, and the engine oil passes through the control valve 33 from the first oil port 321 to the second oil port 322.

Referring to fig. 4 and 7, the relief valve 34 includes a second valve body 341, a ball valve spool 342, and a second spring 343. The second oil passage 32 is also provided with a third oil port 323. The relief valve 34 is provided at an axial end portion of the third port 323. With reference to the plane of the view of fig. 7, the second spring 343 applies a right-to-left elastic force to the ball valve element 342, and the ball valve element 342 is also subjected to the oil pressure in the left second oil passage 32. The second valve body 341 includes an oil inlet 3411 provided axially along the second oil passage 32 and an oil outlet 3412 provided radially along the second oil passage 32. The oil inlet 3411 is communicated with the second oil port 322, the oil outlet 3412 is communicated with the third oil port 323, and the third oil port 323 is communicated with the machine body 1. When the oil pressure is smaller than the elastic force of the second spring 343, the relief valve 34 is closed, and when the oil pressure is greater than the elastic force of the second spring 343, the relief valve 34 is opened, and the oil in the second oil passage 32 returns to the engine body 1 through the oil inlet 3411 and the oil outlet 3412 in sequence.

Referring to fig. 5, 6, and 8, a main oil passage 11, a first oil passage 12, a third oil passage 13, and a fourth oil passage 14 are provided in the engine body 1. The first oil passage 12 and the fourth oil passage 14 are each provided as: extend upwards along vertical direction from the bottom of organism 1, and the bottom is sealed to be set up. The third oil passage 13 is perpendicular to the fourth oil passage 14, the main oil passage 11 is parallel to the second oil passage 32, and the third oil passage 13 and the main oil passage 11 are perpendicular to each other. Referring to fig. 1, a filter base 15 is further disposed on the machine body 1, the filter base 15 and the oil cooler 2 are located on the same side of the machine body 1, and the filter base 15 is located below the oil cooler cover 3. The machine filter base 15 and the machine body 1 are integrally arranged, a fourth oil port 121 is formed in the machine filter base 15, and the fourth oil port 121 is communicated with the first oil duct 12.

The engine oil flows out of the oil filter from the fourth oil port 121 to enter the first oil passage 12 after sequentially passing through the strainer, the oil pump and the oil filter from the oil pan, flows upwards to enter the oil cooler 2, and enters the main oil passage 11 from the third oil passage 13 after being cooled to lubricate and cool each part of the engine.

The first oil port 321 communicates with the first oil passage 12, and the second oil port 322 communicates with the fourth oil passage 14. When the oil pressure at the oil inlet of the oil cooler 2 is high, the control valve 33 is opened, and the engine oil in the first oil passage 12 enters the second oil passage 32 from the first oil port 321, flows out of the second oil passage 32 from the second oil port 322, enters the fourth oil passage 14, flows upward, enters the third oil passage 13, and finally flows into the main oil passage 11. The control valve 33 plays a role of accelerating the speed of the cold vehicle and the heat engine and controlling the oil pressure at the front end of the oil cooler 3.

When the engine operates at full speed and full load, the oil pressure in the main oil gallery 11 is too high, and the oil pressure in the third oil gallery 13, the fourth oil gallery 14 and the second oil gallery 32 is driven to rise to reach the rated pressure of the relief valve 34, the relief valve 34 is opened, and the engine oil returns to the engine body 1 from the oil inlet 3411, the oil outlet 3412 and the third oil port 323 and returns to the oil pan. The pressure relief valve 34 directly controls the pressure in the main oil gallery 11 to avoid overpressure failure.

Referring to fig. 1 and 8, the oil cooler cover 3 is provided with a first cavity 31, the machine body 1 is provided with a second cavity 16 corresponding to the first cavity 31, and the first cavity 31 and the second cavity 16 form a water cavity for accommodating the oil cooler 2. A first pipeline 22 is arranged in the second cavity 16, and the first pipeline 22 connects the first oil duct 12 and the oil inlet end of the oil cooler 2. The oil cooler 2 is fixed on the machine body 1, the oil cooler 2 is positioned in the first cavity 31, and the oil cooler 2 and the oil cooler cover 3 are arranged in a non-contact mode. The beneficial effects of the embodiment are as follows: the oil cooler is fixed to the oil cooler and covers and process complicated oil duct at the oil cooler in the trade of comparing, and this scheme leakage point reduces, and the casting degree of difficulty reduces, and the reliability of engine is higher.

Referring to fig. 2, 3, and 4, the second oil passage 32 is horizontally disposed below the first cavity 31 with reference to the plane of view shown in fig. 2. The second oil passage 32 is a through hole that includes a first opening 324 on the axial left side and a second opening 325 on the axial right side. The control valve 33 is inserted into the second oil passage 32 from the first opening 324, and a sealing plug 3241 for sealing is provided at the first opening 324 to prevent oil leakage. The circumference outer end of first valve body 331 is equipped with the boss, and the right side of first hydraulic fluid port 321 corresponds the boss and is equipped with the bayonet socket that the internal diameter reduces, and the boss is positioned on the right side of first oil duct 321 by the bayonet socket, avoids producing axial slip. The control valve 33 of the present embodiment is generally referred to in the industry as a bypass valve.

The relief valve 34 is partially located in the second oil passage 32, and the relief valve 34 further includes a seal portion 3413 located outside the oil cooler cover 3, the seal portion 3413 blocking the second opening 325. The relief valve 34 is screwed into the second oil passage 32 from the second opening 325 side, and the relief valve 34 is screwed into the second oil passage 32. In other embodiments, the pressure relief valve may be embedded, and the second opening may be sealed by a sealing member.

In other embodiments, the second oil passage may be provided in two axially divided parts, both ends of which are sealed in the axial direction during casting, and the two parts are assembled by screwing. The second oil passage is a non-through hole and includes a plurality of sections of oil passages forming a certain angle therebetween. The above-mentioned evasive schemes do not depart from the scope of the present invention.

The engine 100 disclosed by the invention integrates the bypass oil path and the pressure relief oil path of the engine oil cooler assembly on the engine oil cooler cover, and the engine oil cooler 2 is fixed on the engine body 1, so that the beneficial effects of simple process, stable assembly, few leakage points and good reliability are achieved.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. An engine, comprising:

a body provided with a main oil gallery and a first oil gallery;

the engine oil cooler is directly fixed on the engine body, engine oil directly enters the engine oil cooler from the first oil duct of the engine body, and the engine oil directly returns to the engine body from the engine oil cooler after being cooled and enters the main oil duct;

2. The engine of claim 1, wherein the oil cooler cover is further provided with a third oil port, the third oil port is communicated with the engine body, and a pressure relief valve is arranged between the third oil port and the second oil channel.

3. The engine according to claim 2, wherein the second oil passage is provided in a horizontal direction and below the first chamber, and the control valve and the relief valve are coaxially provided in the second oil passage.

4. The engine according to claim 2, wherein the second oil passage is a through hole, the second oil passage includes a first opening and a second opening at both axial ends, respectively, the control valve is fitted into the second oil passage from the first opening, the first opening is provided with a sealing plug for sealing, and the first oil port is located between the sealing plug and the control valve.

5. The engine of claim 4, wherein the pressure relief valve is disposed at the second opening, the third oil port is located radially outward of the pressure relief valve, the pressure relief valve includes an oil inlet axially disposed along the second oil passage and an oil outlet radially disposed along the second oil passage, the oil inlet communicates with the second oil passage, the oil outlet communicates with the third oil port, a ball valve element is disposed between the oil inlet and the oil outlet, the pressure relief valve is partially disposed in the second oil passage, and the pressure relief valve further includes a sealing portion for sealing the second opening and located outside the engine oil cooler cover.

6. The engine of claim 1, wherein the oil cooler includes a mounting plate by which the oil cooler is secured to the engine block, the oil cooler being located between the engine block and an oil cooler cover, the oil cooler and the oil cooler cover being in a non-contact arrangement.

7. The engine of claim 1, wherein the engine body is further provided with a filter base, the filter base and the oil cooler cover are located on the same side of the engine body, the filter base is located below the oil cooler cover, and the filter base is provided with a fourth oil port which is communicated with the first oil passage.

8. The engine of claim 7, wherein the first oil passage extends upward from the lower end of the engine body in a vertical direction, the lower end of the first oil passage is sealed, and the first oil port is located right above the fourth oil port.

9. The engine of claim 1, wherein the body is further provided with a third oil passage and a fourth oil passage, the third oil passage communicates the oil cooler and the main oil passage, and the fourth oil passage communicates the second oil port and the third oil passage.

10. The engine of claim 9, wherein the third oil passage extends in a horizontal direction, the fourth oil passage extends upward in a vertical direction from the lower end of the engine body, and the lower end of the fourth oil passage is in a sealed arrangement.