CN215633421U - EGR valve assembly with water cooling function - Google Patents
EGR valve assembly with water cooling function Download PDFInfo
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- CN215633421U CN215633421U CN202121463413.5U CN202121463413U CN215633421U CN 215633421 U CN215633421 U CN 215633421U CN 202121463413 U CN202121463413 U CN 202121463413U CN 215633421 U CN215633421 U CN 215633421U
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Abstract
The utility model discloses a water-cooled EGR valve assembly, which comprises a valve body and a cooler, wherein an air inlet of the valve body is connected with an outlet of the cooler, a valve port and a valve rod which stretches along the valve port are arranged in the valve body, a valve block capable of blocking the valve port is arranged at the end part of the valve rod, a return spring is arranged on the valve rod, the valve block blocks the valve port through the return spring, a motor is arranged in the valve body and is connected with an automobile controller ECU (electronic control Unit) through a circuit board, a rotor of the motor is provided with a threaded hole, a screw rod is screwed in the threaded hole, the rotor of the motor rotates to drive the screw rod to stretch and drive the valve rod to move forwards so that the valve block leaves the position of the valve port, the cooler comprises a shell, a vent pipe is inserted in the shell, a water cooling channel is formed between the outer wall of the vent pipe and the inner wall of the shell, and a water inlet pipe and a water outlet pipe which are communicated with the water cooling channel are arranged on the shell. Therefore, the technical effects of good cooling effect and accurate flow control are achieved.
Description
Technical Field
The utility model relates to a control valve in an exhaust gas circulation system in an engine, in particular to a water-cooled EGR valve assembly.
Background
The EGR valve is applied to an automobile engine exhaust emission system by utilizing a vacuum negative pressure working principle, is the most ideal product for solving the problem of exhaust emission at present, and can reduce nitrogen oxides and hydrocarbons generated by the high temperature of an engine in the running process of an automobile, so that the exhaust emission reaches the standard.
Traditional EGR valve of exhaust gas recirculation mainly controls the exhaust gas volume in work, makes a certain amount of waste gas flow in the intake pipe and recirculates, and current EGR valve flow control is accurate inadequately, leads to EGR valve engine idling extremely unstable or even flame-out, trouble lamp scintillation, annual check discharge phenomenon such as not up to standard, burn engine oil, and the exhaust cooling of backward flow is not abundant simultaneously for the temperature of combustion chamber is too high, and the harm is started, influences the engine performance.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a water-cooled EGR valve assembly with good cooling effect and accurate flow control.
In order to achieve the purpose, the utility model provides the following technical scheme: a water-cooled EGR valve assembly comprises a valve body and a cooler, wherein an air inlet of the valve body is connected with an outlet of the cooler, a valve port and a valve rod which extends and retracts along the valve port are arranged in the valve body, a valve plate which can block the valve port is arranged at the end part of the valve rod, a return spring is arranged on the valve rod, the valve plate blocks the valve port through the return spring, a motor is arranged in the valve body, the motor is connected with an automobile controller ECU through a circuit board, a rotor of the motor is provided with a threaded hole, a screw is screwed in the threaded hole, a rotor of the motor rotates to drive the screw to stretch and drive the valve rod to move forward so that the valve plate leaves the position of the valve port, the cooler comprises a shell, a vent pipe is inserted in the shell, a water cooling channel is formed between the outer wall of the vent pipe and the inner wall of the shell, and a water inlet pipe and a water outlet pipe which are communicated with the water cooling channel are arranged on the shell.
The valve body in be equipped with the guide pin bushing that supplies the valve rod activity be equipped with annular lubrication groove on the inner wall of guide pin bushing, this lubrication groove intussuseption is filled with lubricating grease, the inlay card has first seal ring on the terminal surface of guide pin bushing, be equipped with the mounting hole that supplies the guide pin bushing installation on the valve body, dispose rubber circle and second seal ring on the port of mounting hole orientation motor direction.
The valve is characterized in that a guide cover plate is arranged between the motor and the valve body, an annular guide ring is arranged on the guide cover plate, a cylindrical push rod is arranged at the end of the screw rod, the push rod is arranged in the guide ring to move, and the central shaft of the guide ring, the central shaft of the screw rod and the central shaft of the valve rod are aligned on the same straight line.
The valve is characterized in that a bowl-shaped cover is arranged on an air outlet of the valve port, the valve port is arranged on the bottom surface of the bowl-shaped cover, and an annular conical surface is arranged on the edge of the valve plate facing the valve port and corresponds to the inner wall of the valve port.
According to the structure, high-temperature waste gas generated by the engine can be effectively cooled through the water cooling channel through the vent pipe of the cooler, the rotor of the motor drives the screw rod to rotate and output to drive the valve rod to move, the valve port is opened, the motor is connected with the ECU of the automobile controller through the circuit board, so that the rotation of the rotor is more accurate, the opening degree of the valve port is effectively and accurately controlled, the valve rod retracts and is driven by the spring, and the technical effects of good cooling effect and accurate flow control are achieved.
The utility model is further described with reference to the following figures and detailed description.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an embodiment of the present invention;
fig. 3 is an enlarged view of a in fig. 2.
Detailed Description
The present invention will now be described specifically by way of examples.
As shown in fig. 1-3, the embodiment discloses a water-cooled EGR valve assembly, which includes a valve body 1 and a cooler 2, an air inlet of the valve body 1 is connected to an outlet of the cooler 2, a valve port 4 and a valve rod 5 extending and contracting along the valve port 4 are disposed in the valve body 1, a valve sheet 51 capable of blocking the valve port 4 is disposed at an end of the valve rod 5, a return spring 6 is disposed on the valve rod 5, the valve sheet 51 blocks the valve port 4 through the return spring 6, a motor 3 is disposed in the valve body 1, the motor 3 is connected to an ECU (electronic control unit) of a vehicle through a circuit board, a rotor 31 of the motor 3 has a threaded hole 310, a screw rod 7 is screwed into the threaded hole 310, the rotor 31 of the motor 3 rotates to drive the screw rod 7 to extend and contract to drive the valve sheet 5 to move forward to separate the valve sheet 51 from the position of the valve port 4, the cooler 2 includes a housing 21, a vent pipe 22 is inserted into the housing 21, a water-cooling channel 23 is formed between an outer wall of the vent pipe 22 and an inner wall of the housing 21, the shell 21 is provided with a water inlet pipe 24 and a water outlet pipe 25 which are communicated with the water cooling channel 23, and the shell 21 is also provided with a branch pipe 26 for water outlet which is communicated with the valve body for cooling the valve body.
The valve body 1 is internally provided with a guide sleeve 11 for moving the valve rod 5, the inner wall of the guide sleeve 11 is provided with an annular lubricating groove 110, the lubricating groove 110 is filled with lubricating grease, the end face of the guide sleeve 11 is embedded with a first sealing washer 112 in a clamping manner, the valve body 1 is provided with a mounting hole 12 for mounting the guide sleeve 11, and the port of the mounting hole 12 facing the direction of the motor 3 is provided with a rubber ring 13 and a second sealing washer 14. Can make valve rod 5 more accurate reliable in the activity through such structure, avoid waste gas to pass valve rod 5 simultaneously and get into inside motor 3, exert an influence to motor 3, improve the reliability of structure.
A guide cover plate 8 is arranged between the motor 3 and the valve body 1, an annular guide ring 81 is arranged on the guide cover plate 8, a cylindrical push rod 71 is arranged at the end part of the screw rod 7, the push rod 71 is arranged on the guide ring 81 to move, and the central axis of the guide ring 81, the central axis of the screw rod 7 and the central axis of the valve rod 5 are aligned on the same straight line. Through the design, the screw 7 drives the valve rod 5 to be more stable and reliable, and the flow control accuracy is further improved.
The bowl-shaped cover 9 is arranged on the air outlet of the valve port 4, the valve port 4 is arranged on the bottom surface of the bowl-shaped cover 9, and the edge of the valve plate 51 facing the valve port 4 is provided with an annular conical surface which corresponds to the inner wall of the valve port 4. Through the structure, the output connection of the valve body 1 is more reliable, and the tight and reliable attachment of the valve port 4 and the valve plate 51 is ensured.
Adopt above-mentioned technical scheme, the high temperature waste gas that the engine produced carries out effectual cooling through the breather pipe 22 accessible water-cooling channel 23 of cooler 2 and handles, the rotor 31 of motor 3 rotates and drives 7 rotatory outputs of screw rod and drive the activity of valve rod 5, open valve port 4, because motor 3 passes through the circuit board and is connected with automobile controller ECU, make rotor 31's rotation more accurate, effectively carry out accurate control to the aperture of valve port 4, and valve rod 5 returns and contracts and is driven by the spring, just so realize that the cooling effect is good and flow control is accurate technological effect.
Claims (4)
1. The utility model provides a take water cooling EGR valve assembly, includes valve body and cooler, the air inlet of valve body with the exit linkage of cooler be equipped with the valve port in the valve body and follow the flexible valve rod of valve port valve rod tip disposes the valve block that can block up the valve port, disposes return spring on the valve rod, makes the valve block stop up the valve port through return spring be equipped with the motor in the valve body, this motor passes through the circuit board and is connected its characterized in that with automobile controller ECU: the rotor of motor has the screw hole the spiro union has the screw rod in the screw hole, and the rotor rotation of motor drives the flexible drive valve rod of screw rod and moves forward and make the valve block leave the valve port position, the cooler includes the casing, and it has the breather pipe to peg graft in the casing, the outer wall of breather pipe with form the water-cooling passageway between the inner wall of casing dispose inlet tube and the outlet pipe with the water-cooling passageway intercommunication on the casing.
2. The water cooled EGR valve assembly of claim 1 wherein: the valve body in be equipped with the guide pin bushing that supplies the valve rod activity be equipped with annular lubrication groove on the inner wall of guide pin bushing, this lubrication groove intussuseption is filled with lubricating grease, the inlay card has first seal ring on the terminal surface of guide pin bushing, be equipped with the mounting hole that supplies the guide pin bushing installation on the valve body, dispose rubber circle and second seal ring on the port of mounting hole orientation motor direction.
3. The water cooled EGR valve assembly of claim 1 wherein: the valve is characterized in that a guide cover plate is arranged between the motor and the valve body, an annular guide ring is arranged on the guide cover plate, a cylindrical push rod is arranged at the end of the screw rod, the push rod is arranged in the guide ring to move, and the central shaft of the guide ring, the central shaft of the screw rod and the central shaft of the valve rod are aligned on the same straight line.
4. The water cooled EGR valve assembly of claim, wherein: the valve is characterized in that a bowl-shaped cover is arranged on an air outlet of the valve port, the valve port is arranged on the bottom surface of the bowl-shaped cover, and an annular conical surface is arranged on the edge of the valve plate facing the valve port and corresponds to the inner wall of the valve port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121463413.5U CN215633421U (en) | 2021-06-30 | 2021-06-30 | EGR valve assembly with water cooling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121463413.5U CN215633421U (en) | 2021-06-30 | 2021-06-30 | EGR valve assembly with water cooling function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215633421U true CN215633421U (en) | 2022-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121463413.5U Active CN215633421U (en) | 2021-06-30 | 2021-06-30 | EGR valve assembly with water cooling function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215633421U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669176A (en) * | 2021-09-08 | 2021-11-19 | 温州汇众汽车电器有限公司 | EGR valve assembly with water cooling function |
-
2021
- 2021-06-30 CN CN202121463413.5U patent/CN215633421U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669176A (en) * | 2021-09-08 | 2021-11-19 | 温州汇众汽车电器有限公司 | EGR valve assembly with water cooling function |
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