CN216381648U - EGR system water jacket automatic switch device, engine and vehicle - Google Patents
EGR system water jacket automatic switch device, engine and vehicle Download PDFInfo
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- CN216381648U CN216381648U CN202122970401.8U CN202122970401U CN216381648U CN 216381648 U CN216381648 U CN 216381648U CN 202122970401 U CN202122970401 U CN 202122970401U CN 216381648 U CN216381648 U CN 216381648U
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- water jacket
- egr system
- push rod
- temperature sensing
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Abstract
The utility model discloses an automatic water jacket switching device of an EGR (exhaust gas recirculation) system, an engine and a vehicle, wherein the automatic water jacket switching device of the EGR system comprises a shell, a temperature sensing component, a push rod and a valve plate, the shell is provided with an accommodating cavity, the temperature sensing component is fixedly arranged on the shell and is positioned in the accommodating cavity, the temperature sensing component can expand in volume when the ambient temperature rises and reduce in volume when the ambient temperature falls, one end of the push rod is fixedly connected with the temperature sensing component, the other end of the push rod is fixedly connected with the valve plate, the push rod is slidably arranged in the shell in a penetrating manner, the valve plate is positioned in a water jacket, and the valve plate can move towards a water taking flange close to or far away from the water jacket, so that the water flow entering the water jacket is reduced or increased. The automatic water jacket switching device of the EGR system can automatically control the water flow entering the water jacket according to the rise or the fall of the environmental temperature, and has simple structure and low cost.
Description
Technical Field
The utility model relates to the technical field of vehicles, in particular to an automatic water jacket switching device of an EGR (exhaust gas recirculation) system, an engine and a vehicle.
Background
An Exhaust Gas Recirculation (EGR) system refers to returning a portion of the Exhaust Gas from the engine back to the intake pipe and re-entering the cylinder with fresh mixed air. In order to prevent the EGR system from freezing when the EGR system pipeline is in a low-temperature environment such as a plateau and high-cold region, the single-point premixed natural gas engine generally uses a water jacket to heat the EGR system. However, the water jacket of the existing engine EGR system is always in a fully open state during the operation of the engine, and the water inlet amount of the water jacket cannot be adjusted according to the ambient temperature, which may cause the water jacket to still heat the EGR system when the ambient temperature is normal temperature or higher, which may cause the temperature of the combustible mixture entering the cylinder to be too high, which may cause knocking phenomenon, resulting in emission deterioration, noise increase, engine dynamic and economic degradation, and even when the engine shakes seriously, which may cause knocking, engine stalling and damage to engine mechanical parts.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an automatic opening and closing device for an EGR system water jacket, an engine and a vehicle, and aims to solve the problem that the existing engine EGR system water jacket is always in a full-open state in the running process of the engine and the water inlet quantity of the water jacket cannot be adjusted according to the environmental temperature.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an automatic opening and closing device for a water jacket of an EGR system comprises:
a housing provided with an accommodation chamber;
the temperature sensing assembly is fixedly arranged on the shell and is positioned in the accommodating cavity, and the temperature sensing assembly can expand in volume when the ambient temperature rises and reduce in volume when the ambient temperature falls;
the water jacket comprises a push rod and a valve block, one end of the push rod is fixedly connected with the temperature sensing assembly, the other end of the push rod is fixedly connected with the valve block, the push rod penetrates through the shell in a sliding mode, the valve block is located in the water jacket, and the valve block can move towards the water taking flange direction close to or far away from the water jacket so that water flow entering the water jacket is reduced or increased.
As a preferable scheme of the automatic opening and closing device for the water jacket of the EGR system, the temperature sensing assembly includes an elastic sleeve and a paraffin material, the elastic sleeve is provided with a closed cavity, the paraffin material is arranged in the cavity, the elastic sleeve is fixedly arranged on the inner wall of the accommodating cavity, and the elastic sleeve is fixedly connected with the push rod.
As a preferable mode of the above EGR system water jacket automatic opening and closing device, the elastic sleeve is made of a rubber material.
As a preferable scheme of the automatic opening and closing device for the water jacket of the EGR system, the temperature sensing assembly includes an elastic diaphragm and a paraffin material, the elastic diaphragm is fixedly disposed on an inner wall of the accommodating cavity, the elastic diaphragm divides the accommodating cavity into a first cavity and a second cavity, the paraffin material is located in the first cavity, the push rod is located in the second cavity, and the push rod is fixedly connected with the elastic diaphragm.
As a preferable mode of the above EGR system water jacket automatic opening and closing device, the elastic diaphragm is made of a rubber material.
As a preferable mode of the above EGR system water jacket automatic opening and closing device, the housing is made of a metal material.
As a preferable scheme of the automatic opening and closing device for the EGR system water jacket, the housing is provided with a guide hole, and the push rod is slidably inserted through the guide hole.
As a preferable mode of the automatic opening and closing device for the water jacket of the EGR system, the housing includes a first housing and a second housing, the first housing and the second housing are detachably connected, the temperature sensing assembly is disposed in the first housing, and the guide hole is disposed in the second housing.
An engine comprises the EGR system water jacket automatic switch device, wherein the valve plate is positioned at the water inlet of the water jacket, and the closer the distance between the valve plate and the water taking flange of the water jacket is, the smaller the water inlet amount of the water jacket is.
A vehicle comprises the engine.
The utility model has the beneficial effects that:
the utility model provides an automatic water jacket switching device of an EGR (exhaust gas recirculation) system, an engine and a vehicle, wherein when the temperature rises, a temperature sensing assembly positioned in an accommodating cavity of a shell expands, the volume is increased, and a push rod and a valve plate fixedly connected with the temperature sensing assembly can be driven to move towards a water taking flange close to a water jacket, so that the water flow entering the water jacket can be reduced; when the temperature is reduced, the volume of the temperature sensing assembly can be reduced, and the push rod and the valve plate which are fixedly connected with the temperature sensing assembly can be driven to move towards the water taking flange far away from the water jacket, so that the water flow entering the water jacket can be increased. The automatic water jacket switching device of the EGR system can automatically control the water flow entering the water jacket according to the rise or the fall of the environmental temperature, and has simple structure and low cost.
Drawings
Fig. 1 is a schematic structural diagram of an automatic opening and closing device for an EGR system water jacket according to embodiment 1 of the present invention.
In the figure:
1. a housing;
21. a paraffin material; 22. an elastic diaphragm;
3. a push rod.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The utility model provides an automatic water jacket switching device of an EGR (exhaust gas recirculation) system, an engine and a vehicle.
Example 1
As shown in fig. 1, this water jacket automatic switch device of EGR system includes casing 1, temperature sensing component, push rod 3 and valve block, casing 1 is provided with and holds the chamber, temperature sensing component is fixed to be set up in casing 1, and be located and hold the chamber, temperature sensing component can be when ambient temperature risees the volume expansion, the volume reduces when ambient temperature reduces, 3 one end fixed connection temperature sensing components of push rod, the other end fixed connection valve block, push rod 3 slides and wears to locate casing 1, the valve block is located the water jacket, the valve block can remove to the water intaking flange direction that is close to or keeps away from the water jacket to make the water flow that gets into the water jacket reduce or increase. When the temperature sensing assembly expands, the valve plate moves towards the water taking flange close to the water jacket, so that the water flow entering the water jacket can be reduced; when the temperature sensing assembly shrinks, the valve plate moves towards the water taking flange far away from the water jacket, so that the water flow entering the water jacket can be increased. When the temperature rises, the temperature sensing assembly positioned in the accommodating cavity of the shell 1 expands, the volume is increased, and the push rod 3 and the valve plate fixedly connected with the temperature sensing assembly can be driven to move towards the water taking flange close to the water jacket, so that the water flow entering the water jacket can be reduced, and when the temperature rises to a set temperature, the valve plate is in surface contact with the water taking flange to form sealing and close the water jacket; when the temperature is reduced, the volume of the temperature sensing assembly can be reduced, the push rod 3 and the valve plate which are fixedly connected with the temperature sensing assembly can be driven to move towards the water taking flange far away from the water jacket, and therefore the water flow entering the water jacket can be increased. The automatic water jacket switching device of the EGR system can automatically control the water flow entering the water jacket according to the rise or the fall of the environmental temperature. Optionally, the temperature sensing assembly includes an elastic diaphragm 22 and a paraffin material 21, the elastic diaphragm 22 is fixedly disposed on an inner wall of the accommodating cavity, the accommodating cavity is divided into a first cavity and a second cavity by the elastic diaphragm 22, the paraffin material 21 is located in the first cavity, the push rod 3 is located in the second cavity, and the push rod 3 is fixedly connected to the elastic diaphragm 22. When the temperature rises, the paraffin material 21 is heated and melted, the volume is increased, the elastic diaphragm 22 protrudes to the second cavity by utilizing the principle that liquid is not compressible, and the elastic diaphragm 22 drives the push rod 3 fixedly connected with the elastic diaphragm 22 to move. The paraffin material 21 is located in the first chamber in direct contact with the housing 1 and is able to sense the ambient temperature more quickly. Alternatively, the elastic septum 22 is made of a rubber material. The rubber material has good elasticity, so that the elastic diaphragm 22 can be enlarged as the paraffin material 21 becomes larger and can be reduced as the paraffin material 21 becomes smaller.
Alternatively, the housing 1 is made of a metal material. The metal material has good thermal conductivity and can more quickly conduct the external environment temperature to the paraffin material 21.
Optionally, the housing 1 is provided with a guide hole through which the push rod 3 is slidably disposed. The guide hole can guide the moving direction of the push rod 3, so that the push rod 3 can only move along the direction of the water taking flange close to or far away from the water jacket.
Optionally, the housing 1 includes a first housing and a second housing, the first housing and the second housing are detachably connected, the temperature sensing assembly is disposed on the first housing, and the guide hole is disposed on the second housing. The first shell and the second shell are arranged to be detachably connected, and the temperature sensing assembly can be conveniently installed in the accommodating cavity.
The embodiment also provides an engine, which comprises the above automatic opening and closing device for the EGR system water jacket, wherein the valve plate is positioned at the water inlet of the water jacket, and the closer the distance between the valve plate and the water taking flange of the water jacket is, the smaller the water inlet amount of the water jacket is.
The embodiment also provides a vehicle comprising the engine.
Example 2
The present embodiment is different from embodiment 1 in that the temperature sensing means is different from the other embodiments, and the other embodiments are the same.
In this embodiment, the temperature sensing assembly includes an elastic sleeve and a paraffin material, the elastic sleeve is provided with a sealed cavity, the paraffin material is arranged in the cavity, the elastic sleeve is fixedly arranged on the inner wall of the accommodating cavity, and the elastic sleeve is fixedly connected with the push rod. When the temperature rises, the paraffin material is heated and melted, the volume is increased, the volume of the elastic sleeve is increased, and the elastic sleeve drives the push rod to move. The paraffin material can be arranged in the closed cavity of the elastic sleeve firstly, and then the elastic sleeve is fixed with the shell, so that the installation and the operation are convenient.
Optionally, the elastic sleeve is made of a rubber material. The rubber material has large elasticity, so that the elastic sleeve can expand or contract along with the paraffin material.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An automatic opening and closing device for a water jacket of an EGR system is characterized by comprising:
the shell (1), the shell (1) is provided with an accommodating cavity;
the temperature sensing assembly is fixedly arranged on the shell (1) and is positioned in the accommodating cavity, and the volume of the temperature sensing assembly can expand when the ambient temperature rises and reduce when the ambient temperature falls;
push rod (3) and valve block, push rod (3) one end fixed connection the temperature sensing subassembly, other end fixed connection the valve block, push rod (3) slide and wear to locate casing (1), the valve block is located the water jacket, the valve block can be to being close to or keeping away from the water intaking flange direction of water jacket removes to the messenger gets into the water flow of water jacket reduces or increases.
2. The automatic opening and closing device for the water jacket of the EGR system according to claim 1, wherein the temperature sensing assembly comprises an elastic sleeve and a paraffin material (21), the elastic sleeve is provided with a closed cavity, the paraffin material (21) is arranged in the cavity, the elastic sleeve is fixedly arranged on the inner wall of the accommodating cavity, and the elastic sleeve is fixedly connected with the push rod (3).
3. The automatic opening and closing device for the water jacket of the EGR system according to claim 2, wherein the elastic sleeve is made of a rubber material.
4. The automatic opening and closing device for the water jacket of the EGR system according to claim 1, wherein the temperature sensing assembly comprises an elastic diaphragm (22) and a paraffin material (21), the elastic diaphragm (22) is fixedly arranged on the inner wall of a containing cavity, the containing cavity is divided into a first cavity and a second cavity by the elastic diaphragm (22), the paraffin material (21) is located in the first cavity, the push rod (3) is located in the second cavity, and the push rod (3) is fixedly connected with the elastic diaphragm (22).
5. The EGR system water jacket automatic switching device of claim 4 wherein the elastic diaphragm (22) is made of a rubber material.
6. The EGR system water jacket automatic switching device according to claim 1, wherein the housing (1) is made of a metal material.
7. The automatic opening and closing device for the water jacket of the EGR system according to claim 1, characterized in that the shell (1) is provided with a guide hole, and the push rod (3) is slidably arranged through the guide hole.
8. The automatic opening and closing device for the water jacket of the EGR system according to claim 7, wherein the housing (1) comprises a first housing and a second housing, the first housing and the second housing are detachably connected, the temperature sensing assembly is arranged on the first housing, and the guide hole is arranged on the second housing.
9. An engine comprising a water jacket, characterized by further comprising an automatic opening and closing device of an EGR system water jacket according to any one of claims 1 to 8, wherein the automatic opening and closing device of the EGR system water jacket can control the water inlet amount of the water jacket.
10. A vehicle characterized by comprising the engine of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122970401.8U CN216381648U (en) | 2021-11-30 | 2021-11-30 | EGR system water jacket automatic switch device, engine and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122970401.8U CN216381648U (en) | 2021-11-30 | 2021-11-30 | EGR system water jacket automatic switch device, engine and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216381648U true CN216381648U (en) | 2022-04-26 |
Family
ID=81220406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122970401.8U Active CN216381648U (en) | 2021-11-30 | 2021-11-30 | EGR system water jacket automatic switch device, engine and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216381648U (en) |
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2021
- 2021-11-30 CN CN202122970401.8U patent/CN216381648U/en active Active
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