CN202144761U - Turbocharged gasoline engine system with pulse-width modulation valve - Google Patents
Turbocharged gasoline engine system with pulse-width modulation valve Download PDFInfo
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- CN202144761U CN202144761U CN201120237991U CN201120237991U CN202144761U CN 202144761 U CN202144761 U CN 202144761U CN 201120237991 U CN201120237991 U CN 201120237991U CN 201120237991 U CN201120237991 U CN 201120237991U CN 202144761 U CN202144761 U CN 202144761U
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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
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- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model relates to a turbocharged gasoline engine system with a pulse-width modulation valve. In the turbocharged gasoline engine system with the pulse-width modulation valve, the pulse-width modulation valve is added in a traditional turbocharged gasoline engine system adopting the waste gas bypass technology, the added pulse-width modulation valve is provided with an air path interface a, an air path interface b, an air path interface c and an electric signal interface d, the air path interface a is communicated with an air outlet pipe of a turbocharger air-compressor, the air path interface b is communicated with an air inlet of an actuator, the air path interface c is communicated with an air inlet pipe of a turbocharger air-compressor, and the electric signal interface d is connected with a signal output end of an engine ECU (electronic control unit). A detected signal is received by the ECU, a duty ratio signal is transmitted to the pulse-width modulation valve, and supercharging pressure entering the actuator is controlled by the pulse-width modulation valve, therefore, the purpose that bypass amount of waste gas is adjustable is achieved, and finally the purpose that the supercharging pressure can be flexibly adjusted according to specific conditions of the engine is achieved, so that knocking of the engine caused by overhigh supercharging pressure is avoided, and the dynamic performance and the economic performance of the gasoline engine are improved.
Description
Technical field
The utility model relates to the petrol engine turbo-charger technical field, particularly a kind of turbosupercharging petrol engine system that has pulse width modulated valve.
Background technique
According to the automobile industry data statistics, the European petrol engine turbocharging technology market share was since steady-state growth year by year in 2004.The petrolic market share of turbosupercharging had only 10% in 2004, and through short 4 years, the petrolic market share of turbosupercharging had been increased sharply to 21% in 2008, expected 2011 and will be increased to 30%.This shows that the turbosupercharging petrol engine has substituted the naturally aspirated petrol engine gradually on market, become the main flow of engine technology development.
Traditional turbosupercharging petrol engine is that turbosupercharger is appended on existing petrol engine; To improve output power; In order to improve petrol engine low-speed performance and acceleration, prevent the running hypervelocity of turbosupercharger, turbosupercharger has adopted the exhaust gas bypass technology.
The turbosupercharging petrol engine system of Traditional use exhaust gas bypass technology is shown in accompanying drawing 1, and whole system comprises turbocharger air compressor suction tude 1, air-strainer 2, turbocharger air compressor steam outlet pipe 3, intercooler 4, closure 5, engine intake manifold 6, engine chamber 7, enmgine exhaust 8, venting valve 9, engine exhaust house steward 10, booster turbine case 11, turbine rotor 13 and final controlling element 14.Be provided with an exhaust gas bypass hole 12 in turbine exhaust inlet, venting valve 9 is installed in 12 places, exhaust gas bypass hole, the exhaust gas flow in control exhaust gas bypass hole 12.The suction port of final controlling element 14 and turbocharger air compressor steam outlet pipe 3 link, and the unlatching of venting valve 9, close by final controlling element 14 control.Final controlling element 14 is positive pressure-controlled, and final controlling element 14 pretightening forces apply opposite force control final controlling element push rod and close venting valve 9, and the boost pressure and the exhaust back pressure that get into final controlling element 14 apply positive force acting in conjunction final controlling element 14 push rods unlatching venting valve 9.But in real work, the pretightening force of final controlling element 14 is definite values and greater than exhaust back pressure, the unlatching of venting valve 9, closes the control that mainly receives turbocharger air compressor steam outlet pipe boost pressure.
When turbocharger air compressor steam outlet pipe boost pressure surpasses a force value; Promptly when the suffered positive force of final controlling element 14 during greater than opposite force; Final controlling element 14 push rod forwards move opens venting valve 9, and engine section waste gas does not directly enter atmosphere through booster turbine rotor 13, and the exhaust energy that gets into turbine rotor is reduced; Turbo charger speed descends, thereby makes blower outlet boost pressure P
cControlled.
When turbocharger air compressor steam outlet pipe boost pressure is lower than a force value; Be that the suffered positive force of final controlling element 14 is during less than opposite force; Final controlling element 14 push rods oppositely move closes venting valve 9, and engine exhaust promotes turbine rotor 13 actings all through booster turbine.
The characteristics of exhaust gas bypass technology are: the unlatching of venting valve 9, to close be that size according to turbocharger air compressor steam outlet pipe boost pressure is controlled; Final controlling element 13 inside are the elasticity control structure; Cause the control mode of final controlling element 13 to be approximately the linearity control mode, the stroke of final controlling element push rod strengthens with boost pressure to be increased.
Adopt the advantage of exhaust gas bypass technology to be: the motor valve closing of when low speed and high pulling torque operating mode, exit makes full use of the rotating speed of exhaust energy raising turbosupercharger, required air quantity and the pressure ratio of assurance motor; The motor valve opening by-passing part exhaust energy of when high rotating speed, declared working condition, exitting guarantees that turbosupercharger does not exceed the speed limit.
Diesel engine is compression-ignited, and compression ratio is higher than petrol engine, and engine speed is at 700rpm～3500 rpm, the matched well of used exhaust gas bypass technique guarantee turbosupercharger and motor.
Petrol engine is a Spark ignition type, and compression ratio is about 8～12; Petrolic rotating speed is at 700rpm～6500 rpm, and the air mass flow excursion is big, because suction pressure and temperature all raise, this makes and compress temperature rising at the end, makes the tendency to detonate aggravation after the petrol engine supercharging.Petrol engine adopts turbosupercharging to cause in the factors of pinking that therefore having the greatest impact of boost pressure, must be controlled boost pressure.Present stage, the maximal pressure ratio is controlled at 1.8～2.0 scopes can effectively suppress pinking.
After the petrol engine turbosupercharging, the subject matter that directly adopts the exhaust gas bypass technology that boost pressure is controlled appearance is following:
1, adopt the exhaust gas bypass technology that the control of boost pressure is approximately the linearity control mode, boost pressure progressively raises with the operating mode of motor from low speed point, torque point, rated point.Petrol engine causes pinking for preventing that boost pressure is too high, and the maximal pressure ratio is controlled at 1.8～2.0 scopes, and the pretightening force of existing final controlling element is on the low side, can not the maximal pressure ratio be strict controlled in 1.8～2.0 scopes.
2, the boost pressure of torque point part operating mode can be approaching with the rated point boost pressure in demarcation; Even it is higher than rated point boost pressure; The exhaust gas bypass technology can not be carried out Flexible Control to turbo boost pressure according to engine design point; Can not satisfy the torque demand of whole working condition point, can only reduce engine power performance, economic index, influence the popularization of turbocharging technology on petrol engine.
Summary of the invention
The purpose of the utility model is to overcome the above-mentioned deficiency of existing technology and a kind of turbosupercharging petrol engine system that has pulse width modulated valve is provided, and gets into the boost pressure of final controlling element through pulse width modulated valve control.
The technological scheme of the utility model is: a kind of turbosupercharging petrol engine system that has pulse width modulated valve, it comprises turbocharger air compressor suction tude, air-strainer, turbocharger air compressor steam outlet pipe, intercooler, closure, engine intake manifold, engine chamber, enmgine exhaust, venting valve, engine exhaust house steward, booster turbine case, turbine rotor, final controlling element and Engine ECU.Be provided with an exhaust gas bypass hole in turbine exhaust inlet, the venting valve is installed in place, exhaust gas bypass hole, the exhaust gas flow in control exhaust gas bypass hole.The suction port of final controlling element and turbocharger air compressor steam outlet pipe link, the venting valve unlatching, close by final controlling element and control.
The inventive point of the utility model is the pulse width modulated valve that in the turbosupercharging petrol engine system of Traditional use exhaust gas bypass technology, increases a two-bit triplet; The pulse width modulated valve of two-bit triplet that increases has a, b, three air-path interfaces of c and an electric signal interface d; A end air-path interface and turbocharger air compressor steam outlet pipe UNICOM; B end air-path interface and final controlling element suction port UNICOM; C end air-path interface and turbocharger air compressor suction tude UNICOM; Electric signal interface d and Engine ECU signal output part link, Engine ECU through datawire and middle cold pressure sensor, in cold temperature transducer, TPS, engine rotation speed sensor, engine exhaust temperature sensor, engine exhaust house steward oxygen level sensor link.
The turbosupercharging petrol engine system that has pulse width modulated valve that the utility model provides, the working principle of the boost pressure of its pulse width modulated valve control entering final controlling element is following:
Engine ECU through cold pressure sensor in receiving, in the testing signal of cold temperature transducer, TPS, engine rotation speed sensor, engine exhaust temperature sensor, engine exhaust house steward oxygen level sensor; The duty cycle signals of redispatching is to pulse width modulated valve; Control gets into the boost pressure of final controlling element; Reach the adjustable of exhaust gas bypass amount, the rotating speed of control turbosupercharger, finally reaching boost pressure can carry out the flexibility adjustment according to the demand of the concrete operating mode of motor; Avoid causing and engine knock improve petrolic power performance and economic performance because of boost pressure is too high.
When pulse width modulated valve duty cycle signals was 0%, the c of pulse width modulated valve held obstruction, a end and b end UNICOM; A end incoming pressure is 79kPa; The boost pressure of turbocharger air compressor steam outlet pipe is to get into final controlling element through a end from the b end, and it is maximum to promote final controlling element push rod stroke, at this moment; The venting valve opening is maximum, and the bypass exhausted air quantity is bigger.
When pulse width modulated valve duty cycle signals was 100%, a of pulse width modulated valve held obstruction, and the boost pressure of turbocharger air compressor steam outlet pipe can not get into the b end; B end and c end UNICOM; Original boost pressure releases through b end and end c in the final controlling element, final controlling element push rod return, at this moment; The venting valve closing, waste gas is bypass not.
When pulse width modulated valve duty cycle signals is intermediate value; The boost pressure of the turbocharger air compressor steam outlet pipe that links with a of pulse width modulated valve end is pro rata distributed the b end and is got into final controlling element, promotes the final controlling element push rod and moves, at this moment; The venting valve opening is moderate, by-passing part waste gas.
The utility model compared with prior art has following characteristics:
A kind of turbosupercharging petrol engine system that has pulse width modulated valve that the utility model provides has overcome the problem that above-mentioned existing technology exists; In the turbosupercharging petrol engine system of Traditional use exhaust gas bypass technology, increase the pulse width modulated valve of a two-bit triplet; And obtain nonlinear duty cycle signals according to the nominal data of Engine ECU; Transfer wide valve with the duty cycle signals control impuls again, the boost pressure by pulse width modulated valve control entering final controlling element makes the aperture of venting valve to regulate according to the actual demand of operating point; Thereby the rotating speed of control turbosupercharger; Obtain required boost pressure,, satisfied petrolic power performance and economic performance to reach the matched well of turbosupercharger and motor.
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Description of drawings
Accompanying drawing 1 is the turbosupercharging petrol engine system schematic of Traditional use exhaust gas bypass technology, and the hollow arrow in the accompanying drawing is represented exhaust back pressure, and filled arrows is represented boost pressure;
The turbosupercharging petrol engine system schematic that has pulse width modulated valve that accompanying drawing 2 provides for the utility model, the hollow arrow in the accompanying drawing is represented exhaust back pressure, filled arrows is represented boost pressure;
Embodiment
A kind of turbosupercharging petrol engine system that has pulse width modulated valve, it comprises turbocharger air compressor suction tude 1, air-strainer 2, turbocharger air compressor steam outlet pipe 3, intercooler 4, closure 5, engine intake manifold 6, engine chamber 7, enmgine exhaust 8, venting valve 9, engine exhaust house steward 10, booster turbine case 11, turbine rotor 13, final controlling element 14 and Engine ECU 16.Be provided with an exhaust gas bypass hole 12 in turbine exhaust inlet, venting valve 9 is installed in 12 places, exhaust gas bypass hole, the exhaust gas flow in control exhaust gas bypass hole 12.The suction port of final controlling element 14 and turbocharger air compressor steam outlet pipe 3 link, and the unlatching of venting valve 9, close by final controlling element 14 control.
In turbosupercharging petrol engine system, increase the pulse width modulated valve 15 of a two-bit triplet; The pulse width modulated valve 15 of two-bit triplet that increases has a, b, three air-path interfaces of c and an electric signal interface d; A end air-path interface and turbocharger air compressor steam outlet pipe 3 UNICOMs; B end air-path interface and final controlling element suction port UNICOM, c end air-path interface and turbocharger air compressor suction tude 1 UNICOM, electric signal interface d and Engine ECU 16 signal output parts link.Engine ECU 16 through datawire 17 and middle cold pressure sensor, in cold temperature transducer, TPS, engine rotation speed sensor, engine exhaust temperature sensor, engine exhaust house steward oxygen level sensor link.
Claims (1)
1. turbosupercharging petrol engine system that has pulse width modulated valve; It comprises turbocharger air compressor suction tude, air-strainer, turbocharger air compressor steam outlet pipe, intercooler, closure, engine intake manifold, engine chamber, enmgine exhaust, venting valve, engine exhaust house steward, booster turbine case, turbine rotor, final controlling element and Engine ECU; Be provided with an exhaust gas bypass hole in turbine exhaust inlet; The venting valve is installed in place, exhaust gas bypass hole; The exhaust gas flow in control exhaust gas bypass hole; The suction port of final controlling element and turbocharger air compressor steam outlet pipe link, the venting valve unlatching, close by final controlling element and control; It is characterized in that: the pulse width modulated valve that increases a two-bit triplet in the turbosupercharging petrol engine system; The pulse width modulated valve of two-bit triplet that increases has a, b, three air-path interfaces of c and an electric signal interface d; A end air-path interface and turbocharger air compressor steam outlet pipe UNICOM; B end air-path interface and final controlling element suction port UNICOM; C end air-path interface and turbocharger air compressor suction tude UNICOM; Electric signal interface d and Engine ECU signal output part link, ECU through datawire and middle cold pressure sensor, in cold temperature transducer, TPS, engine rotation speed sensor, engine exhaust temperature sensor, engine exhaust house steward oxygen level sensor link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120237991U CN202144761U (en) | 2011-07-07 | 2011-07-07 | Turbocharged gasoline engine system with pulse-width modulation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120237991U CN202144761U (en) | 2011-07-07 | 2011-07-07 | Turbocharged gasoline engine system with pulse-width modulation valve |
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| Publication Number | Publication Date |
|---|---|
| CN202144761U true CN202144761U (en) | 2012-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120237991U Expired - Fee Related CN202144761U (en) | 2011-07-07 | 2011-07-07 | Turbocharged gasoline engine system with pulse-width modulation valve |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767278A (en) * | 2016-11-16 | 2017-05-31 | 江西昌河汽车有限责任公司 | A kind of method for monitoring the true stroke of booster actuator |
| CN108533390A (en) * | 2018-01-30 | 2018-09-14 | 中国航天电子技术研究院 | A kind of small-sized aviation piston two-stroke turbocharged engine |
| CN108730043A (en) * | 2015-07-24 | 2018-11-02 | 丁永新 | Power loosens the grass trimmer weakened immediately with accelerator control device |
| CN108730042A (en) * | 2015-07-24 | 2018-11-02 | 丁永新 | Prevent the grass trimmer of engine misses |
| CN108798905A (en) * | 2015-07-24 | 2018-11-13 | 丁永新 | Power loosens the grass trimmer weakened immediately with accelerator control device |
| CN108798906A (en) * | 2015-07-24 | 2018-11-13 | 丁永新 | A kind of working method of grass trimmer |
| CN108934399A (en) * | 2015-07-24 | 2018-12-07 | 朱保生 | Grass trimmer |
| US10954893B2 (en) | 2018-08-30 | 2021-03-23 | Kohler, Co. | Accumulator device |
-
2011
- 2011-07-07 CN CN201120237991U patent/CN202144761U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730043A (en) * | 2015-07-24 | 2018-11-02 | 丁永新 | Power loosens the grass trimmer weakened immediately with accelerator control device |
| CN108730042A (en) * | 2015-07-24 | 2018-11-02 | 丁永新 | Prevent the grass trimmer of engine misses |
| CN108798905A (en) * | 2015-07-24 | 2018-11-13 | 丁永新 | Power loosens the grass trimmer weakened immediately with accelerator control device |
| CN108798906A (en) * | 2015-07-24 | 2018-11-13 | 丁永新 | A kind of working method of grass trimmer |
| CN108934399A (en) * | 2015-07-24 | 2018-12-07 | 朱保生 | Grass trimmer |
| CN106767278A (en) * | 2016-11-16 | 2017-05-31 | 江西昌河汽车有限责任公司 | A kind of method for monitoring the true stroke of booster actuator |
| CN108533390A (en) * | 2018-01-30 | 2018-09-14 | 中国航天电子技术研究院 | A kind of small-sized aviation piston two-stroke turbocharged engine |
| US10954893B2 (en) | 2018-08-30 | 2021-03-23 | Kohler, Co. | Accumulator device |
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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: 20120215 Termination date: 20180707 |
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| CF01 | Termination of patent right due to non-payment of annual fee |