CN211819739U - EGR valve with heating water cavity - Google Patents
EGR valve with heating water cavity Download PDFInfo
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- CN211819739U CN211819739U CN202020280045.XU CN202020280045U CN211819739U CN 211819739 U CN211819739 U CN 211819739U CN 202020280045 U CN202020280045 U CN 202020280045U CN 211819739 U CN211819739 U CN 211819739U
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- water cavity
- egr valve
- valve
- valve body
- heating water
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Abstract
The utility model discloses a take EGR valve that heats water cavity relates to the EGR valve, and what mainly solve is that current EGR valve freezes easily technical problem in severe cold area, the EGR valve that the area heated water cavity includes the valve body, still include with the casing of valve body parcel, clearance between valve body and the casing has formed and has heated the water cavity, be equipped with on the casing with heat water inlet, the delivery port of water cavity intercommunication. The utility model discloses can be through introducing the heating water cavity with the cooling water of engine to make the cooling water circulate and heat the valve body between heating water cavity and the engine, can effectively solve the frozen problem of severe cold district EGR valve.
Description
Technical Field
The utility model relates to a EGR valve, more specifically say, it relates to a take EGR valve of heating water cavity.
Background
The EGR (exhaust gas recirculation) technology is one of the main technologies developed for engines, that is, a small part of exhaust gas generated by an engine is sent back to a cylinder to participate in combustion, and the main component CO2 in the exhaust gas can slow down the combustion speed in the cylinder, reduce the temperature in the cylinder, improve the reliability of the engine and reduce the generation of nitrogen oxides. In addition, on the ignition engine, the detonation boundary can be widened, and the specific gas/oil consumption can be reduced by properly increasing the ignition advance angle, so that the economy is improved.
The EGR valve is an important main component of an EGR system, the bridge type EGR valve and the CAN valve are mainly arranged on the market at present, the bridge type EGR valve and the CAN valve play a critical role in precisely controlling the EGR rate, the poor influence is generated on an engine when the EGR rate is too high or too low, the service life of the engine CAN be shortened due to the fact that the temperature in an engine cylinder and the exhaust temperature are high when the EGR rate is too low, and the engine is easy to catch fire and runs badly when the EGR rate is too high.
Because the EGR waste gas contains water vapor, when the engine runs under a small-load working condition with an EGR rate in a severe cold area (the temperature is less than or equal to 0 ℃), because the flow of the waste gas is small, the heat is less, the heat dissipation is quick, and the moisture in the waste gas is easy to freeze with an EGR valve, so that the EGR valve is not controlled by a command; when the engine stops working, the residual moisture on and around the EGR valve and the valve are frozen, the engine is operated again, and the EGR valve is not controlled.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is not enough to the above-mentioned of prior art, the utility model aims at providing a can effectively solve the EGR valve of area heating water cavity of freezing problem.
The technical scheme of the utility model is that: the EGR valve with the heating water cavity comprises a valve body and a shell, wherein the shell wraps the valve body, the heating water cavity is formed in a gap between the valve body and the shell, and a water inlet and a water outlet which are communicated with the heating water cavity are formed in the shell.
As a further improvement, the waste gas inlet and the waste gas outlet of the valve body respectively extend to the outer side of the shell.
Furthermore, the joints of the shell and the waste gas inlet and the waste gas outlet are respectively provided with a sealing element.
Furthermore, the electric control unit of the valve body is positioned outside the shell, and one end of the valve body penetrates through the shell and is connected with the electric control unit.
Further, a sealing ring is arranged between the valve and the shell.
Further, the water inlet and the water outlet are respectively positioned at two ends of the shell.
Further, the water inlet and the water outlet are respectively positioned on opposite sides of the shell.
Advantageous effects
Compared with the prior art, the utility model, the advantage that has does: the utility model is provided with a shell for wrapping the valve body, a heating water cavity is formed by the gap between the valve body and the shell, and a water inlet and a water outlet which are communicated with the heating water cavity are arranged on the shell; the cooling water of the engine can be introduced into the heating water cavity, and the cooling water circulates between the heating water cavity and the engine to heat the valve body, so that the temperatures of the EGR valve and the valve seat are always above the freezing point, and the EGR valve is not frozen to cause clamping stagnation even if the engine runs under the load with a small EGR rate; meanwhile, after the engine is stopped, the residual water vapor in the EGR valve can be continuously heated by the cooling water retained in the heating water cavity in a short time, the risk of ice formation of the EGR valve and surrounding water is reduced, and the problem of next cold machine starting jamming is improved to a certain extent.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein: 1-valve body, 2-shell, 3-heating water cavity, 4-water inlet, 5-water outlet, 6-waste gas inlet, 7-waste gas outlet, 8-electric control unit and 9-valve.
Detailed Description
The invention will be further described with reference to specific embodiments shown in the drawings.
Referring to fig. 1, the EGR valve with the heating water cavity comprises a valve body 1 and a housing 2 wrapping the valve body 1, a heating water cavity 3 is formed in a gap between the valve body 1 and the housing 2, and a water inlet 4 and a water outlet 5 which are communicated with the heating water cavity 3 are arranged on the housing 2. Circulating hot water can be introduced into the heating water cavity 3 through the water inlet 4 and the water outlet 5 to heat the valve body 1, so that the temperature of the EGR valve and the valve seat is always above the freezing point, and the EGR valve is not frozen to cause clamping stagnation even if the engine runs under the load with small EGR rate; meanwhile, after the engine is stopped, the residual water vapor in the EGR valve can be continuously heated by the hot water retained in the hot water cavity 3 in a short time, the risk of ice formation of the EGR valve and surrounding water is reduced, and the problem of next cold machine starting jamming is improved to a certain extent. The utility model discloses do not specifically limit to the source of circulation hot water. Be equipped with the insulating layer on casing 2, can effectively reduce casing 2's heat dissipation, after the engine stops, can further prolong the hot water that heating water cavity 3 is detained to the hot time of steam, further improved the problem of cold machine start jamming next time. The fins are arranged on the periphery of the valve body 1, so that the contact area of the valve body 1 and hot water can be increased, the heat absorption rate of the valve body 1 to the hot water is improved, the heating speed of the valve body 1 is increased, and the icing problem of the EGR valve is solved.
The waste gas inlet 6 and the waste gas outlet 7 of the valve body 1 extend to the outer side of the shell 2 respectively, sealing parts are arranged at the joints of the shell 2 and the waste gas inlet 6 and the waste gas outlet 7 respectively, the sealing parts can be sealing gaskets or sealing filler, the sealing performance between the shell 2 and the valve body 1 can be improved, and hot water leakage is prevented.
The electric control unit 8 of the valve body 1 is positioned on the outer side of the shell 2, the electric control unit 8 is an electromagnetic coil of the valve body 1 and is used for controlling the opening and closing of the valve 9, one end of the valve 9 of the valve body 1 penetrates through the shell 2 and is connected with the electric control unit 8, and a sealing ring is arranged between the valve 9 and the shell 2 to prevent hot water from leaking. The electric control unit 8 is arranged on the outer side of the shell 2, so that the influence of high temperature of hot water on the work of the electric control unit 8 can be reduced, meanwhile, the electric control unit 8 can be non-waterproof, and the cost can be reduced.
The water inlet 4 and the water outlet 5 are respectively positioned at two ends of the shell 2, and the water inlet 4 and the water outlet 5 are respectively positioned at opposite sides of the shell 2, so that hot water can uniformly flow through all corners of the heating water cavity 3, the valve body 1 is uniformly heated, and the problem of icing of the EGR valve is better solved.
Utilize the EGR valve that area add hot water cavity can realize following heating method at least:
the cooling water of the engine is introduced into the heating water cavity 3 of the EGR valve, and the cooling water circulates between the heating water cavity 3 and the engine to heat the valve body 1 of the EGR valve, so that the heat energy of the cooling water can be fully utilized, and the additional consumption of energy is not needed to produce hot water.
The utility model discloses can effectively solve the frozen problem of severe cold area EGR valve, engine operating stability is good, economic nature is good.
The above is only a preferred embodiment of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility of the invention and the utility of the patent.
Claims (7)
1. The EGR valve with the heating water cavity comprises a valve body (1) and is characterized by further comprising a shell (2) wrapped by the valve body (1), the heating water cavity (3) is formed in a gap between the valve body (1) and the shell (2), and a water inlet (4) and a water outlet (5) communicated with the heating water cavity (3) are formed in the shell (2).
2. The EGR valve with heating water chamber according to claim 1, wherein the exhaust gas inlet (6) and the exhaust gas outlet (7) of the valve body (1) extend to the outside of the housing (2), respectively.
3. The EGR valve with the heating water cavity is characterized in that the joints of the shell (2) and the exhaust gas inlet (6) and the exhaust gas outlet (7) are provided with sealing parts.
4. An EGR valve with heating water cavity according to claim 1, characterized in that the electric control unit (8) of the valve body (1) is located outside the housing (2), and one end of the valve (9) of the valve body (1) passes through the housing (2) and is connected with the electric control unit (8).
5. EGR valve with heating water chamber according to claim 4 characterized in that a sealing ring is provided between the valve (9) and the housing (2).
6. The EGR valve with the heating water cavity is characterized in that the water inlet (4) and the water outlet (5) are respectively positioned at two ends of the shell (2).
7. The EGR valve with the heating water cavity is characterized in that the water inlet (4) and the water outlet (5) are respectively positioned at the opposite sides of the shell (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020280045.XU CN211819739U (en) | 2020-03-09 | 2020-03-09 | EGR valve with heating water cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020280045.XU CN211819739U (en) | 2020-03-09 | 2020-03-09 | EGR valve with heating water cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211819739U true CN211819739U (en) | 2020-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020280045.XU Active CN211819739U (en) | 2020-03-09 | 2020-03-09 | EGR valve with heating water cavity |
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| CN (1) | CN211819739U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173656A (en) * | 2020-03-09 | 2020-05-19 | 广西玉柴机器股份有限公司 | EGR valve with heating water cavity and heating method |
-
2020
- 2020-03-09 CN CN202020280045.XU patent/CN211819739U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173656A (en) * | 2020-03-09 | 2020-05-19 | 广西玉柴机器股份有限公司 | EGR valve with heating water cavity and heating method |
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