CN203742769U - Waste gas bypass valve control mechanism for engine turbocharging system - Google Patents
Waste gas bypass valve control mechanism for engine turbocharging system Download PDFInfo
- Publication number
- CN203742769U CN203742769U CN201420043949.5U CN201420043949U CN203742769U CN 203742769 U CN203742769 U CN 203742769U CN 201420043949 U CN201420043949 U CN 201420043949U CN 203742769 U CN203742769 U CN 203742769U
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- China
- Prior art keywords
- engine
- bypass valve
- exhaust gas
- gas bypass
- waste gas
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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.)
- Expired - Fee Related
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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
Abstract
A waste gas bypass valve control mechanism for an engine turbocharging system solves the problem of enabling the opening degree of a waste gas bypass valve to be matched with the running work condition of an engine. According to the waste gas bypass valve control mechanism, an actuator provided with a control cavity is arranged on a waste gas turbocharger, a piston is arranged in the control cavity of the actuator, a spring is arranged on one side of a piston rod, and a stirring fork is arranged at one end of the piston rod. The waste gas bypass valve control mechanism is characterized in that the stirring fork is a two-level lever structure which is provided with two fulcrums and is arranged on an engine cylinder, a driving arm of the two-level lever structure is connected with the piston rod, and a driven arm of the two-level lever structure is connected with the waste gas bypass valve. According to the waste gas bypass valve control mechanism, control over the normally-open state of the waste gas bypass valve under the small-load work condition of an engine is achieved through matching of the waste gas bypass valve control mechanism and the work state of an electromagnetic valve, the work state of the engine waste gas turbocharger can be well matched with the work condition of the engine, and therefore running reliability and economic performance of the engine are improved.
Description
Technical field
The utility model relates to a kind of engine turbine pressurization system, especially one and is applicable to engine turbine pressurization system exhaust gas by-pass valve opening controlling mechanism, belongs to internal combustion engine turbocharging technical field.
Background technique
Along with the raising of people to vehicle economy and power character requirement, be subject to the restriction of the Abgasgesetz of increasingly stringent simultaneously, the Studying about Turbocharger of Engine technology is used widely, and is all provided with at present exhaust-gas turbocharger in a variety of vehicles.
Existing engine turbine pressurization system exhaust gas bypass valve control device adopts accompanying drawing 1, structure shown in Fig. 2, that is: on the exhaust-gas turbocharger of positive pressure-controlled, a final controlling element 2 opening and closing for controlling exhaust gas by-pass valve 1 is installed, gas after gas compressor supercharging is introduced in final controlling element control chamber 2-1 by one section of pipeline, in final controlling element control chamber 2-1, piston 2-2 is set, in piston rod one side, spring 2-3 is set, by entering the moving left and right of difference control piston 2-2 of gas pressure and spring force in final controlling element control chamber, thereby drive the shift fork 2-4 action being connected with piston rod, described shift fork 2-4 is leverage, its fulcrum 2-5 is arranged on engine cylinder-body, master arm is connected with piston rod, slave arm is connected with exhaust gas by-pass valve 1.A solenoid valve 3 is installed on the pipeline of above-mentioned exhaust-gas turbocharger after gas compressor, the control data that provide by Engine ECU, control the switching of solenoid valve 3, thereby regulate the pressure that enters gas in final controlling element control chamber, by the action of shift fork 2-4, reach the object of the switching that drives exhaust gas by-pass valve 1.
As shown in Figure 2, existing engine turbine pressurization system exhaust gas bypass valve control device is under motor small load condition, and solenoid valve 3 is in opening state, and now after supercharging, the pressure of gas is little, enters the pressure P of gas in final controlling element control chamber 2-1
1be less than spring force T, spring force T and the pressure P that enters gas in final controlling element control chamber
1difference T-P
1pull the rich fulcrum 2-5 of shift fork 2-4 to turn clockwise, thereby make exhaust gas by-pass valve 1 in normally off.And exhaust gas by-pass valve, in closed condition, has increased the exhaust resistance of motor under motor small load condition, cause the residual gas in firing chamber to increase, chamber temperature is raise, increase the weight of tendency to detonate; Because residual gas exists, be unfavorable for that fresh air enters firing chamber simultaneously, affected the economic performance of motor.
Model utility content
The purpose of this utility model is the drawback for prior art, provide a kind of by with the coordinating of electromagnetic valve work state, thereby can realize under motor small load condition exhaust gas by-pass valve and improve in normally open the engine turbine pressurization system exhaust gas bypass valve control device of engine running reliability and economic performance.
Problem described in the utility model realizes with following technical proposals:
A kind of engine turbine pressurization system exhaust gas bypass valve control device, it installs a final controlling element that is provided with control chamber on exhaust-gas turbocharger, in the control chamber of described final controlling element, piston is set, in piston rod one side, spring is set, described piston rod end arranges shift fork, its specialization is: described shift fork is the second lever structure that is provided with two fulcrums on engine cylinder-body, and its master arm is connected with piston rod, and slave arm is connected with exhaust gas by-pass valve.
Above-mentioned engine turbine pressurization system exhaust gas bypass valve control device, it is introduced the gas after gas compressor supercharging in the control chamber of final controlling element by one section of pipeline, and a solenoid valve is installed on described pipeline, and described solenoid valve is by its switching of Engine ECU control.
Above-mentioned engine turbine pressurization system exhaust gas bypass valve control device, under motor small load condition, solenoid valve is in closed condition, and the piston in control chamber moves to the left under spring force effect, and shift fork pulls and lower exhaust gas by-pass valve is opened at piston rod.
Above-mentioned engine turbine pressurization system exhaust gas bypass valve control device, at motor during in middle and high load working condition, by the switching of Engine ECU control solenoid valve, piston in control chamber after supercharging under gas pressure and spring force effect in dynamic balance state, shift fork pulls the aperture of lower control exhaust gas by-pass valve at piston rod.
The utility model by arranging the fork type exhaust gas bypass valve actuator of second lever structure on the Studying about Turbocharger of Engine device, and the gas after gas compressor is introduced by one section of pipeline in the control chamber of final controlling element, on pipeline after gas compressor, a solenoid valve is installed simultaneously, the control data that provide by ECU, control the unlatching of solenoid valve, the transient equiliblium that utilization enters gas pressure and spring force in final controlling element control chamber regulates the action of shift fork, and then controls the aperture of exhaust gas by-pass valve.In the time not needing pressurized machine work, can ensure that exhaust gas by-pass valve is in full-gear; While needing supercharging, can regulate according to motor the aperture of exhaust gas by-pass valve to torque demand, control the size of boost pressure.As can be seen here, the utility model by with the coordinating of electromagnetic valve work state, realize the control of exhaust gas by-pass valve normally open under motor small load condition, the Studying about Turbocharger of Engine device working state is matched with engine operating condition better, thereby improved reliability and the economic performance of engine running.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is existing engine turbine pressurization system exhaust gas bypass valve control device schematic diagram;
Fig. 2 is existing engine turbine pressurization system exhaust gas by-pass valve control principle drawing;
Fig. 3 is the utility model structural representation;
Fig. 4 is fundamental diagram of the present utility model.
In figure, each list of reference numerals is: 1, exhaust gas by-pass valve, 2, final controlling element, 2-1, control chamber, 2-2, piston, 2-3, spring, 2-4, shift fork, 2-5, fulcrum, 3, solenoid valve, 4, engine exhaust passage, 5, exhaust gas bypass mouth, 6, exhaust gas bypass passage.
Embodiment
Referring to Fig. 3, the utility model is installed a final controlling element 2 that is provided with control chamber 2-1 on exhaust-gas turbocharger, in the control chamber 2-1 of described final controlling element 2, piston 2-2 is set, in piston rod one side, spring 2-3 is set, described piston rod end arranges shift fork 2-4, described shift fork 2-4 is the second lever structure that is provided with two fulcrum 2-5 on engine cylinder-body, and its master arm is connected with piston rod, and slave arm is connected with exhaust gas by-pass valve 1; The utility model is introduced the gas after gas compressor supercharging in the control chamber 2-1 of final controlling element 2 by one section of pipeline, and a solenoid valve 3 is installed on described pipeline, and described solenoid valve 3 is by its switching of Engine ECU control.
Referring to Fig. 3, Fig. 4, the utility model is under motor small load condition, solenoid valve 3 is in closed condition, piston 2-2 in control chamber 2-1 moves to the left under the effect of spring 2-3 elastic force, shift fork 2-4 pulls lower to second lever mechanism at piston rod, pull exhaust gas by-pass valve 1 and the exhaust gas bypass mouth 5 being arranged on engine exhaust passage 4 sidewalls to depart from, part waste gas is discharged through exhaust gas bypass passage 6, thereby reduce the exhaust resistance of motor.At motor during in middle and high load working condition, by the switching of Engine ECU control solenoid valve 3, piston 2-2 in control chamber 2-1 after supercharging under gas pressure and the effect of spring 2-3 elastic force in dynamic balance state, shift fork 2-4 pulls the aperture of lower control exhaust gas by-pass valve 1 at piston rod, control by engine exhaust passage 4 and enter the exhaust gas flow in turbosupercharger with this, the Studying about Turbocharger of Engine device working state is matched with engine operating condition better, thereby improved reliability and the economic performance of engine running.
Claims (4)
1. an engine turbine pressurization system exhaust gas bypass valve control device, it installs a final controlling element (2) that is provided with control chamber (2-1) on exhaust-gas turbocharger, in the control chamber (2-1) of described final controlling element (2), piston (2-2) is set, in piston rod one side, spring (2-3) is set, described piston rod end arranges shift fork (2-4), it is characterized in that, described shift fork (2-4) for being provided with the second lever structure of two fulcrums (2-5) on engine cylinder-body, its master arm is connected with piston rod, and slave arm is connected with exhaust gas by-pass valve (1).
2. a kind of engine turbine pressurization system exhaust gas bypass valve control device according to claim 1, it is characterized in that, it is introduced the gas after gas compressor supercharging in the control chamber (2-1) of final controlling element (2) by one section of pipeline, a solenoid valve (3) is installed on described pipeline, and described solenoid valve (3) is by its switching of Engine ECU control.
3. a kind of engine turbine pressurization system exhaust gas bypass valve control device according to claim 2, it is characterized in that, under motor small load condition, solenoid valve (3) is in closed condition, piston (2-2) in control chamber (2-1) moves to the left under the effect of spring (2-3) elastic force, and shift fork (2-4) pulls and lower exhaust gas by-pass valve (1) opened at piston rod.
4. a kind of engine turbine pressurization system exhaust gas bypass valve control device according to claim 2, it is characterized in that, at motor during in middle and high load working condition, by the open and-shut mode of Engine ECU control solenoid valve (3), piston (2-2) in control chamber (2-1) after supercharging under gas pressure and the effect of spring (2-3) elastic force in dynamic balance state, shift fork (2-4) pulls the aperture of lower control exhaust gas by-pass valve (1) at piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420043949.5U CN203742769U (en) | 2014-01-24 | 2014-01-24 | Waste gas bypass valve control mechanism for engine turbocharging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420043949.5U CN203742769U (en) | 2014-01-24 | 2014-01-24 | Waste gas bypass valve control mechanism for engine turbocharging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203742769U true CN203742769U (en) | 2014-07-30 |
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ID=51342582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420043949.5U Expired - Fee Related CN203742769U (en) | 2014-01-24 | 2014-01-24 | Waste gas bypass valve control mechanism for engine turbocharging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203742769U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632361A (en) * | 2015-02-12 | 2015-05-20 | 广西玉柴机器股份有限公司 | Control mechanism for waste gas bypass valve of turbocharger |
| CN105545462A (en) * | 2016-02-04 | 2016-05-04 | 吉林大学 | Double-membrane-box type exhaust-driven gas turbine bypass valve control structure of gasoline engine |
| CN108087108A (en) * | 2017-12-22 | 2018-05-29 | 中国第汽车股份有限公司 | A kind of natural gas engine exhaust gas bypass formula turbocharger control systems and its method |
-
2014
- 2014-01-24 CN CN201420043949.5U patent/CN203742769U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632361A (en) * | 2015-02-12 | 2015-05-20 | 广西玉柴机器股份有限公司 | Control mechanism for waste gas bypass valve of turbocharger |
| CN104632361B (en) * | 2015-02-12 | 2017-03-01 | 广西玉柴机器股份有限公司 | A kind of controlling organization of the exhaust gas by-pass valve of turbocharger |
| CN105545462A (en) * | 2016-02-04 | 2016-05-04 | 吉林大学 | Double-membrane-box type exhaust-driven gas turbine bypass valve control structure of gasoline engine |
| CN108087108A (en) * | 2017-12-22 | 2018-05-29 | 中国第汽车股份有限公司 | A kind of natural gas engine exhaust gas bypass formula turbocharger control systems and its method |
| CN108087108B (en) * | 2017-12-22 | 2023-09-08 | 中国第一汽车股份有限公司 | Control system and method for exhaust gas bypass type supercharger of natural gas engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20220124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |