CN113339127A - Waste gas bypass valve assembly for supercharger and vehicle - Google Patents
Waste gas bypass valve assembly for supercharger and vehicle Download PDFInfo
- Publication number
- CN113339127A CN113339127A CN202110507373.8A CN202110507373A CN113339127A CN 113339127 A CN113339127 A CN 113339127A CN 202110507373 A CN202110507373 A CN 202110507373A CN 113339127 A CN113339127 A CN 113339127A
- Authority
- CN
- China
- Prior art keywords
- waste gas
- gas bypass
- valve assembly
- bypass valve
- supercharger
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
- F02B37/183—Arrangements of bypass valves or actuators therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
- F02B37/183—Arrangements of bypass valves or actuators therefor
- F02B37/186—Arrangements of actuators or linkage for bypass valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
The invention discloses a waste gas bypass valve assembly for a supercharger and a vehicle, wherein the waste gas bypass valve assembly comprises a volute and a waste gas bypass valve assembly, the waste gas bypass valve assembly is arranged at the opening side of a waste gas bypass hole in the volute and can be turned to one side for opening, a limiting bulge is arranged on the inner side wall of the volute close to the waste gas bypass valve assembly, and when the waste gas bypass valve assembly is opened to the maximum angle, the limiting bulge is in interference fit with the waste gas bypass valve assembly. The exhaust gas bypass valve can guarantee the durability and reliability of products and reduce the noise of the exhaust gas bypass valve.
Description
Technical Field
The invention relates to an engine, in particular to a waste gate valve assembly for a supercharger and a vehicle.
Background
The exhaust gas turbocharger improves the air input of the engine by recycling the energy of exhaust gas generated by combustion of the engine, solves the problem of insufficient dynamic property of the naturally aspirated engine under plateau working conditions due to the fact that the atmospheric density is reduced along with the increase of altitude by applying the exhaust gas turbocharger, and meanwhile, the exhaust gas turbocharger is also used as one of key technologies for improving the efficiency of the engine, and promotes the achievement of the upgrading target of energy conservation and emission reduction of the engine. Therefore, the turbocharging technology of the gasoline engine becomes the main technical route of the passenger car engine at the present stage.
With the continuous improvement of the requirements of the market on the driving performance and the comfort of the passenger vehicle and the further tightening of the national regulations on the requirements on oil consumption and emission. The control mode of the supercharger exhaust gas bypass valve is gradually upgraded from a pneumatic mechanical actuator to an electric actuator so as to realize more accurate control of the supercharger exhaust gas bypass flow. Under the working condition of cold start of the whole vehicle, because the engine runs in a low-speed and low-load state, the supercharging pressure of the engine is low, the control pressure obtained by a pneumatic mechanical waste gas valve actuator is too low, and a waste gas bypass valve cannot be opened under the working condition; and to the booster that has used electrodynamic type wastegate actuator, the switching of wastegate is direct by the given voltage signal control of ECU, does not receive the restriction of engine operation condition, consequently can realize opening booster exhaust and can improve the catalyst converter and initiate burning temperature under the cold start operating mode of low temperature, improves the application demand that whole car cold start discharged. The use of electric actuators, in addition to providing the advantages of faster control response and wider control range, also presents challenges to cost and noise control issues.
When the supercharger waste gas bypass valve is opened, waste gas flow impacts a valve plate, and the existing waste gas bypass valve assembly collides to generate noise. In general, this noise is masked by the engine background noise when the entire vehicle is running, and cannot be recognized by human ears. However, due to the low background noise of the engine under the cold start working condition of the whole vehicle, the knocking sound emitted by the existing exhaust gas bypass valve assembly is easy to be identified by a user, and NVH complaints are generated. Therefore, with the popularization of electric actuator applications and increasingly stringent emission legislation requirements, the problem of the rattle noise complaint of the wastegate valve assembly of a supercharger engine under the cold start condition of the entire vehicle is increasingly prominent.
Referring to fig. 11, the existing wastegate valve assembly 7 comprises an existing valve plate 71, an existing gasket 72 and an existing rocker arm 73, and the main optimization scheme for improving the problem of the knocking noise of the exhaust valve plate is to add an elastic pad 74 between the existing rocker arm 73 and the existing gasket 72, which increases the product price and meets the requirements of more complex production process due to the need of adding a high-temperature resistant elastic pad.
Disclosure of Invention
The invention aims to provide a waste gate valve assembly for a supercharger and a vehicle, which can ensure the durability and reliability of products and reduce the noise of the waste gate valve.
The waste gas bypass valve assembly for the supercharger comprises a volute and a waste gas bypass valve assembly, wherein the waste gas bypass valve assembly is arranged on the opening side of a waste gas bypass hole in the volute and can be turned over and opened towards one side, a limiting bulge is arranged on the inner side wall of the volute, close to the waste gas bypass valve assembly, and when the waste gas bypass valve assembly is opened to the maximum angle, the limiting bulge is in interference fit with the waste gas bypass valve assembly.
Further, the waste gas bypass valve assembly comprises a valve block, a gasket and a rocker arm, one end of the rocker arm is connected with the actuator, the other end of the rocker arm is provided with a connecting plate, the connecting plate is provided with a through hole which is in clearance fit with a connecting shaft on the valve block, one end of the connecting shaft is fixedly connected with the valve block, the other end of the connecting shaft penetrates through the through hole and is fixedly connected with the gasket, and when the waste gas bypass valve assembly is opened to the maximum angle, the limiting protrusion is in interference fit with the upper surface of the gasket.
Furthermore, the connecting shaft penetrates through one end of the through hole and is welded and fixed with the gasket, and the gasket is in clearance fit with the connecting plate and the valve block.
Furthermore, the connecting plate is provided with a limiting notch on the periphery, and the valve block is provided with a limiting part correspondingly matched with the limiting notch.
Furthermore, the limiting bulge is arc-shaped, and the limiting bulge is in point contact with the waste gas bypass valve component.
Further, the waste gas bypass valve assembly is opened to the maximum opening angle Y under the cold starting working condition, and the opening angles X of the waste gas bypass valve assembly under other working conditions are all smaller than the maximum opening angle Y.
A vehicle comprises a supercharger, and the supercharger comprises the waste gate valve assembly for the supercharger.
Compared with the prior art, the invention has the following beneficial effects.
1. According to the invention, the limit bulge is arranged on the inner side wall of the volute close to the waste gas bypass valve assembly, when the waste gas bypass valve assembly is opened to the maximum angle, the limit bulge is in interference fit with the waste gas bypass valve assembly, and the limit bulge applies pressing force to the waste gas bypass valve assembly, so that the relative displacement of each part in the waste gas bypass valve assembly is limited, and the parts are prevented from colliding with each other under the action of waste gas, and thus the purpose of eliminating knocking abnormal sound is achieved.
2. The limiting bulge is arc-shaped, and the limiting bulge and the waste gas bypass valve assembly are in point contact, so that the joint position can be automatically adjusted, the contact effectiveness is improved, and the requirement on the dimensional accuracy of the matching surface of the limiting bulge and the waste gas bypass valve assembly is lowered.
3. The invention can solve the problem of knocking noise caused by the waste gas bypass valve assembly without additionally adding parts, has low cost and ensures the reliability of the waste gas bypass valve assembly.
4. The waste gas bypass valve assembly is opened to the maximum opening Y under the condition of cold starting working condition, and the opening X of the waste gas bypass valve assembly under other working conditions is smaller than the maximum opening Y, so that the limiting bulge in the volute is interacted with the waste gas bypass valve assembly only under the cold starting working condition, and the waste gas bypass valve assembly is not in contact under other working conditions, the acting frequency of the limiting bulge is reduced, the abrasion of the product is reduced, and the durability and reliability of the product are improved.
Drawings
FIG. 1 is one of the schematic structural diagrams of the present invention;
FIG. 2 is a second schematic structural diagram of the present invention;
FIG. 3 is a schematic view of the actuator of the present invention in connection with a wastegate valve assembly;
FIG. 4 is a schematic structural view of the waste gas bypass valve assembly of the present invention;
FIG. 5 is an exploded view of the waste gate valve assembly of the present invention;
FIG. 6 is a schematic view of the opening angle of the valve plate according to the present invention;
FIG. 7 is a schematic view of the maximum opening angle of the valve plate according to the present invention;
FIG. 8 is a schematic diagram of the maximum opening angle of the valve plate under the low temperature and cold start removing condition according to the present invention;
FIG. 9 is a schematic view of the valve plate of the present invention with an opening angle of 0 °;
FIG. 10 is a schematic view of the construction of the volute of the present invention;
fig. 11 is a schematic structural view of a conventional waste gate valve assembly.
In the figure, 1-volute, 11-exhaust gas bypass hole, 12-shaft hole, 2-exhaust gas bypass valve component, 21-valve plate, 211-spacing part, 22-gasket, 23-rocker, 24-connecting plate, 241-through hole, 242-spacing gap, 25-connecting shaft, 3-spacing bulge, 4-actuator, 41-actuator rocker, 5-push rod, 6-outer rocker, 7-existing exhaust gas bypass valve component, 71-existing valve plate, 72-existing gasket, 73-existing rocker, 74-elastic cushion.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1 and 10, the waste gate valve assembly for a supercharger includes a volute 1 and a waste gate valve assembly 2, wherein the waste gate valve assembly 2 is disposed at an opening side of a waste gate hole 11 inside the volute 1 and can be turned to one side for opening, a limiting protrusion 3 is disposed on an inner side wall of the volute 1 close to the waste gate valve assembly 2, and when the waste gate valve assembly 2 is opened to a maximum angle, the limiting protrusion 3 is in interference fit with the waste gate valve assembly 2.
Referring to fig. 4 and 5, the waste gas bypass valve assembly 2 includes a valve plate 21, a gasket 22 and a rocker arm 23, one end of the rocker arm 23 is connected to the actuator 4, the other end of the rocker arm is provided with a connecting plate 24, the connecting plate 24 is provided with a through hole 241 which is in clearance fit with a connecting shaft 25 on the valve plate 21, one end of the connecting shaft 25 is fixedly connected to the valve plate 21, the other end of the connecting shaft passes through the through hole 241 and is fixedly connected to the gasket 22, and when the waste gas bypass valve assembly 2 is opened to a maximum angle, the limiting protrusion 3 is in interference fit with the upper surface of the gasket 22.
Referring to fig. 2 and 3, the actuator 4 is an electric actuator and is fixed on the outer side wall of the volute 1, an actuator rocker arm 41 of the actuator 4 is in transmission connection with one end of a push rod 5, the other end of the push rod 5 is hinged with one end of an outer rocker arm 6, and the other end of the outer rocker arm 6 passes through a shaft hole 12 on the volute 1 and is hinged with the end of a rocker arm 23 in the wastegate valve assembly 2. The ECU of the vehicle outputs control voltage to control the actuator rocker arm 41 of the actuator 4 to rotate clockwise or anticlockwise, the rotation displacement of the actuator rocker arm 41 is transmitted to the outer rocker arm 6 through the push rod 5, so that the outer rocker arm 6 synchronously generates clockwise or anticlockwise rotation displacement, and the outer rocker arm 6 drives the waste gate valve assembly 2 to rotate along the axis of the rocker arm 23, so that the opening and closing functions of the valve sheet 21 are realized.
The connecting shaft 25 penetrates through one end of the through hole 241 and is welded and fixed with the gasket 22, the gasket 22 and the connecting plate 24 are in clearance fit, and the connecting plate 24 and the valve plate 21 are in clearance fit, so that the problems of abrasion and high-temperature thermal deformation of all parts are solved. Limiting notches 242 are formed in the peripheries of the connecting plates 24, limiting portions 211 correspondingly matched with the limiting notches 242 are arranged on the valve plates 21, the matching effect of the limiting notches 242 and the limiting portions 211 guarantees the assembling size precision of the connecting plates 24 and the valve plates 21, and assembling efficiency is improved.
Referring to fig. 6, an included angle α between the bottom end surface of the valve plate and the end surface of the waste gas bypass hole is an opening angle of the waste gas bypass valve assembly, that is, an opening degree of the waste gas valve. Referring to fig. 9, when the valve sheet 21 is completely attached to the end surface of the exhaust gas bypass hole in the scroll 1, the opening angle of the valve sheet is 0 °. Referring to fig. 7, the maximum mechanical opening angle that the valve plate 21 can achieve is Y, that is, the opening angle when the gasket 22 of the wastegate valve assembly 2 is attached to the stopper protrusion 3. Referring to fig. 8, the maximum opening angle of the valve plate 21 under the other working conditions except the cold start is X, the ECU can control the waste gas valve bypass assembly to be at any angle between 0 ° and Y, when the supercharger structure is designed, Y is ensured to be greater than X, that is, the waste gas valve bypass assembly 2 is opened to the maximum opening angle Y under the cold start working condition, and the opening angles X of the waste gas valve bypass assembly 2 under the other working conditions are all smaller than the maximum opening angle Y. The calibration rule enables the opening angle of the waste gas valve bypass assembly to meet the functional requirement, the gasket 22 is prevented from contacting the limiting protrusion 3, unnecessary contact times of the working surface are reduced, contact abrasion is prevented, and the durability and reliability of the product are improved. When the whole vehicle is under the condition of a cooling dynamic working condition, the ECU controls the waste gas bypass valve assembly 2 to be opened to the maximum angle Y, the limiting bulge 3 on the volute 1 compresses the gasket 22, the relative displacement among the valve plate 21, the gasket 22 and the connecting plate 24 is avoided, and the mutual collision of all parts under the action of waste gas is avoided, so that the aim of eliminating knocking abnormal sound is fulfilled.
A vehicle comprises a supercharger, and the supercharger comprises the waste gate valve assembly for the supercharger.
Claims (7)
1. A wastegate valve assembly for a supercharger comprising a volute (1) and a wastegate valve assembly (2), characterized in that: waste gas bypass valve subassembly (2) set up the opening side in inside waste gas bypass hole (11) of volute (1) and can open to one side upset, volute (1) are close to and are equipped with spacing arch (3) on the inside wall of waste gas bypass valve subassembly (2), open when the biggest angle when waste gas bypass valve subassembly (2), spacing arch (3) and waste gas bypass valve subassembly (2) interference fit.
2. The wastegate valve assembly for a supercharger of claim 1, wherein: waste gas bypass valve subassembly (2) include valve block (21), gasket (22) and rocking arm (23), rocking arm (23) one end is connected with executor (4), and the other end is equipped with connecting plate (24), be equipped with on connecting plate (24) with connecting axle (25) clearance fit's through-hole (241) on valve block (21), connecting axle (25) one end and valve block (21) fixed connection, the other end passes through-hole (241) and gasket (21) fixed connection, when waste gas bypass valve subassembly (2) is opened the maximum angle, spacing arch (3) and gasket (21) upper surface interference fit.
3. The wastegate valve assembly for a supercharger of claim 2, wherein: the connecting shaft (25) penetrates through one end of the through hole (241) and is welded and fixed with the gasket (22), and the gasket (22) is in clearance fit with the connecting plate (24) and the connecting plate (24) is in clearance fit with the valve plate (21).
4. The wastegate valve assembly for a supercharger of claim 2, wherein: limiting notches (242) are formed in the periphery of the connecting plate (24), and limiting portions (211) correspondingly matched with the limiting notches (242) are arranged on the valve plate (21).
5. The wastegate valve assembly for a supercharger according to claim 1 or 2, wherein: the limiting bulge (3) is arc-shaped, and the limiting bulge (3) is in point contact with the waste gas bypass valve component (2).
6. The wastegate valve assembly for a supercharger according to claim 1 or 2, wherein: the waste gas bypass valve assembly (2) is opened to the maximum opening angle Y under the condition of cold starting working condition, and the opening angles X of the waste gas bypass valve assembly (2) under other working conditions are all smaller than the maximum opening angle Y.
7. A vehicle comprising a supercharger, characterized in that: the supercharger comprises a waste gate valve assembly for the supercharger as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110507373.8A CN113339127A (en) | 2021-05-10 | 2021-05-10 | Waste gas bypass valve assembly for supercharger and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110507373.8A CN113339127A (en) | 2021-05-10 | 2021-05-10 | Waste gas bypass valve assembly for supercharger and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113339127A true CN113339127A (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110507373.8A Pending CN113339127A (en) | 2021-05-10 | 2021-05-10 | Waste gas bypass valve assembly for supercharger and vehicle |
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| Country | Link |
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| CN (1) | CN113339127A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012176866A1 (en) * | 2011-06-22 | 2012-12-27 | 株式会社Ihi | Multistage supercharging system |
| DE102011117339A1 (en) * | 2011-10-31 | 2013-05-02 | Bmw Ag | Exhaust gas turbocharger with a wastegate valve |
| DE102012202505A1 (en) * | 2012-02-17 | 2013-08-22 | Mahle International Gmbh | Supercharger for internal combustion engine in motor car, has stopper supporting waste-gate valve in opened position of waste-gate flap, and engaging device fixing waste-gate valve in opened position of waste-gate flap |
| EP2803838A1 (en) * | 2013-05-15 | 2014-11-19 | Bayerische Motoren Werke Aktiengesellschaft | Exhaust gas turbocharger assembly |
| CN104481673A (en) * | 2014-12-29 | 2015-04-01 | 无锡康明斯涡轮增压技术有限公司 | Exhaust gas turbocharger volute bypass device |
| CN205840997U (en) * | 2016-05-04 | 2016-12-28 | 宁波丰沃涡轮增压系统有限公司 | A kind of exhaust gas bypass valve system of turbocharger |
| CN106523137A (en) * | 2016-12-05 | 2017-03-22 | 无锡康明斯涡轮增压技术有限公司 | Bypass valve with anti-rotation structure |
| CN106677894A (en) * | 2017-03-17 | 2017-05-17 | 奕森科技（上海）有限公司 | Novel valve deck assembly of turbocharger |
| CN107587934A (en) * | 2016-07-08 | 2018-01-16 | 现代自动车株式会社 | For the apparatus and method for the chatter noise for reducing automobile turbocharger |
| CN107859557A (en) * | 2017-12-06 | 2018-03-30 | 安徽华菱汽车有限公司 | Engine supercharger and its supercharger bypass valve |
| CN109268131A (en) * | 2017-07-18 | 2019-01-25 | 上海汽车集团股份有限公司 | A kind of the Studying about Turbocharger of Engine device turbine box assembly and its exhaust gas valve |
| CN110953062A (en) * | 2018-09-27 | 2020-04-03 | 长城汽车股份有限公司 | Turbocharger waste gas bypass valve assembly and turbocharger |
| CN211422763U (en) * | 2019-12-05 | 2020-09-04 | 宁波吉利罗佑发动机零部件有限公司 | Exhaust gas bypass actuating mechanism of turbocharger |
| CN112443393A (en) * | 2020-11-23 | 2021-03-05 | 湖南路捷道夫涡轮增压系统有限公司 | Supercharger for preventing valve disc of waste gas bypass valve from rotating and wearing |
-
2021
- 2021-05-10 CN CN202110507373.8A patent/CN113339127A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012176866A1 (en) * | 2011-06-22 | 2012-12-27 | 株式会社Ihi | Multistage supercharging system |
| DE102011117339A1 (en) * | 2011-10-31 | 2013-05-02 | Bmw Ag | Exhaust gas turbocharger with a wastegate valve |
| DE102012202505A1 (en) * | 2012-02-17 | 2013-08-22 | Mahle International Gmbh | Supercharger for internal combustion engine in motor car, has stopper supporting waste-gate valve in opened position of waste-gate flap, and engaging device fixing waste-gate valve in opened position of waste-gate flap |
| EP2803838A1 (en) * | 2013-05-15 | 2014-11-19 | Bayerische Motoren Werke Aktiengesellschaft | Exhaust gas turbocharger assembly |
| CN104481673A (en) * | 2014-12-29 | 2015-04-01 | 无锡康明斯涡轮增压技术有限公司 | Exhaust gas turbocharger volute bypass device |
| CN205840997U (en) * | 2016-05-04 | 2016-12-28 | 宁波丰沃涡轮增压系统有限公司 | A kind of exhaust gas bypass valve system of turbocharger |
| CN107587934A (en) * | 2016-07-08 | 2018-01-16 | 现代自动车株式会社 | For the apparatus and method for the chatter noise for reducing automobile turbocharger |
| CN106523137A (en) * | 2016-12-05 | 2017-03-22 | 无锡康明斯涡轮增压技术有限公司 | Bypass valve with anti-rotation structure |
| CN106677894A (en) * | 2017-03-17 | 2017-05-17 | 奕森科技（上海）有限公司 | Novel valve deck assembly of turbocharger |
| CN109268131A (en) * | 2017-07-18 | 2019-01-25 | 上海汽车集团股份有限公司 | A kind of the Studying about Turbocharger of Engine device turbine box assembly and its exhaust gas valve |
| CN107859557A (en) * | 2017-12-06 | 2018-03-30 | 安徽华菱汽车有限公司 | Engine supercharger and its supercharger bypass valve |
| CN110953062A (en) * | 2018-09-27 | 2020-04-03 | 长城汽车股份有限公司 | Turbocharger waste gas bypass valve assembly and turbocharger |
| CN211422763U (en) * | 2019-12-05 | 2020-09-04 | 宁波吉利罗佑发动机零部件有限公司 | Exhaust gas bypass actuating mechanism of turbocharger |
| CN112443393A (en) * | 2020-11-23 | 2021-03-05 | 湖南路捷道夫涡轮增压系统有限公司 | Supercharger for preventing valve disc of waste gas bypass valve from rotating and wearing |
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Application publication date: 20210903 |