CN203717114U - Waste gas bypass type pressurizer high-precision control system - Google Patents
Waste gas bypass type pressurizer high-precision control system Download PDFInfo
- Publication number
- CN203717114U CN203717114U CN201420041218.7U CN201420041218U CN203717114U CN 203717114 U CN203717114 U CN 203717114U CN 201420041218 U CN201420041218 U CN 201420041218U CN 203717114 U CN203717114 U CN 203717114U
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- vacuum
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- gas bypass
- valve
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- 239000002912 waste gas Substances 0.000 title abstract description 8
- 239000012528 membrane Substances 0.000 abstract 5
- 239000007789 gas Substances 0.000 description 53
- 239000000446 fuel Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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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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- Supercharger (AREA)
Abstract
The utility model relates to a waste gas bypass type pressurizer high-precision control system which is characterized in that a vacuum adjuster is fixedly connected above a waste gas bypass type pressurizer, the front-end port of the vacuum adjuster is connected with the air inlet pipeline of a compressor, a pressurizing pressure port at the rear end of the vacuum adjuster is connected with the output end of the compressor, a vacuum membrane valve cavity is divided into an upper cavity and a lower cavity through a vacuum membrane valve, a bypass valve outlet pressure port at the upper end of the vacuum adjuster is connected with the upper cavity end of the vacuum membrane valve, a spring is disposed in the lower cavity, the vacuum membrane is connected with one end of a connecting rod through the spring, the other end of the connecting rod is connected with a waste gas bypass valve, a pressure-temperature sensor is disposed at the port of the upper cavity of the vacuum membrane valve and connected with a sensor processing module, the sensor processing module is connected with a control module through a data line, the control module is connected with the hardware drive module of the electric connector on the vacuum adjuster. The waste gas bypass type pressurizer high-precision control system is fast in response, high in portability, easy to calibrate, and capable of increasing power performance and economical efficiency of an engine and avoiding excessively high pressurizing pressure and overspeed operation of the pressurizer, and engine safety is guaranteed.
Description
Technical field
The utility model relates to a kind of exhaust gas bypass formula pressurized machine high-precision control system, is applicable to petrol engine exhaust gas bypass formula pressurized machine and controls.
Background technique
As everyone knows, motor burns acting by fuel in cylinder combustion and produces power, because the fuel quantity of inputting is subject to sucking air quantitative limitation in cylinder, therefore the power that motor produces also can be restricted, if the ride quality of motor is in the optimum state, increasing output power can only enter cylinder and increase fuel quantity by compressing more air again, thereby improves work by combustion ability.Under current technical specifications, exhaust gas bypass formula pressurized machine is that a kind of motor that can make increases the mechanical device of output power in the situation that working efficiency is constant, and it mainly comprises gas compressor, turbo machine, bearing, vacuum governor, vacuum diaphragm plate valve and exhaust gas by-pass valve.
In order to make motor obtain higher torque reserve when the low speed, require the dynamic torque response of motor very fast simultaneously, thereby must make Maximum Torque operating point coupling under the motor slow-speed of revolution in the high efficiency region of gas compressor.But because the speed range of petrol engine is wider, this will make the rotating speed of motor turbine when large load at a high speed increase comparatively fast, make boost pressure too high and may occur pressurized machine hypervelocity, motor is produced to harm; And boost pressure when lower motor do not reach good power character, Economy.Therefore how to realize the quick high accuracy of boost pressure is controlled to the emphasis that becomes exhaust gas bypass formula pressurized machine control system.
Traditional exhaust gas bypass formula pressurized machine control system is mainly based on PID controller, by actual supercharge pressure and the difference of expectation boost pressure, calculate waste gas solenoid valve dutycycle, feature is to control complicatedly, and target boost pressure changes when very fast and cannot respond in time, demarcates difficulty.
Summary of the invention
The purpose of this utility model is to provide a kind of exhaust gas bypass formula pressurized machine high-precision control system, its difference by pressure sensor characteristic data, exhaust gas bypass formula pressurized machine performance data and actual supercharge pressure and expectation boost pressure is calculated waste gas solenoid valve dutycycle, its response is fast, precision is high, portable strong, be easy to demarcate, can improve power character and the Economy of motor; And can avoid the too high and pressurized machine overspeed operation of boost pressure, guaranteed the safety of motor.
The technical solution of the utility model is achieved in that exhaust gas bypass formula pressurized machine high-precision control system, it is characterized in that: the right-hand relief opening that has of exhaust gas bypass formula pressurized machine right-hand member turbo machine, on relief opening, there is exhaust gas by-pass valve, exhaust gas bypass formula pressurized machine left end is gas compressor, on turbo machine and gas compressor, add pressure-temperature sensor, exhaust gas bypass formula pressurized machine top is fixedly connected with vacuum governor, the front end port of vacuum governor front end is connected with the air inlet pipeline of gas compressor, the boost pressure port of vacuum governor rear end is connected with gas compressor output terminal, in vacuum diaphragm valve pocket, by vacuum diaphragm, vacuum diaphragm plate valve is divided into upper chamber and lower chambers, the bypass valve outlet pressure port of vacuum governor upper end is held and is connected with the upper chamber of vacuum diaphragm plate valve, bottom chamber has spring, vacuum diaphragm is connected with connecting rod one end by spring, the connecting rod the other end connects exhaust gas by-pass valve, there is pressure-temperature sensor the port of the upper chamber of vacuum diaphragm plate valve, pressure-temperature sensor is connected with sensor puocessing module, sensor puocessing module is connected with control module by datawire, control module is connected with the Hardware drive module of automatically controlled connector assembly on vacuum governor again.
Good effect of the present utility model is that its difference of passing through pressure sensor characteristic data, exhaust gas bypass formula pressurized machine performance data and actual supercharge pressure and expectation boost pressure is calculated waste gas solenoid valve dutycycle, feature is that response is fast, precision is high, portable strong, be easy to demarcate, can improve power character and the Economy of motor; And can avoid the too high and pressurized machine overspeed operation of boost pressure, guaranteed the safety of motor.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present utility model.
Fig. 2 is vacuum governor Local map of the present utility model.
Fig. 3 is working state block diagram of the present utility model.
Fig. 4 is that control module of the present utility model is related to block diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail: as Fig. 1, 2, shown in 3, exhaust gas bypass formula pressurized machine high-precision control system, it is characterized in that: the right-hand relief opening 4 that has of exhaust gas bypass formula pressurized machine 1 right-hand member turbo machine 2, on relief opening 4, there is exhaust gas by-pass valve 3, exhaust gas bypass formula pressurized machine 1 left end is gas compressor 5, on turbo machine 2 and gas compressor 5, add pressure-temperature sensor, exhaust gas bypass formula pressurized machine 1 top is fixedly connected with vacuum governor 6, the front end port 7 of vacuum governor 6 front ends is connected with the air inlet pipeline of gas compressor 5, the boost pressure port 8 of vacuum governor 6 rear ends is connected with gas compressor 5 output terminals, in vacuum diaphragm plate valve 10 chambeies, by vacuum diaphragm 12, vacuum diaphragm plate valve 10 is divided into upper chamber 11 and lower chambers 13, the bypass valve outlet pressure port 9 of vacuum governor 6 upper ends is connected with upper chamber's 11 ends of vacuum diaphragm plate valve 10, in lower chambers 13, there is spring 14, vacuum diaphragm 12 is connected with connecting rod 15 one end by spring 14, connecting rod 15 the other ends connect exhaust gas by-pass valve 3, there is pressure-temperature sensor the port of the upper chamber 11 of vacuum diaphragm plate valve 10, pressure-temperature sensor is connected with sensor puocessing module, sensor puocessing module is connected with control module by datawire, control module is connected with the Hardware drive module of automatically controlled connector assembly 16 on vacuum governor 6 again.
As shown in Figure 4, before and after the gas compressor of exhaust gas bypass formula pressurized machine and turbo machine, install pressure-temperature sensor additional, at upper chamber's port of vacuum governor, go out to install additional pressure-temperature sensor, in order to record pressure, the temperature value under different operating modes.
First, from sensor puocessing module, according to the magnitude of voltage of ambient pressure sensor and characteristic value, can calculate external pressure; According to the magnitude of voltage of boost-pressure sensor and characteristic value, engine speed, altitude can calculate actual supercharge pressure.
Sensor puocessing module comprises that ambient pressure sensor is processed and boost-pressure sensor is processed, and for output environment pressure and actual supercharge pressure, both are using the main input as control module.Ambient pressure sensor puocessing module, according to the characteristic value of ambient pressure sensor, is converted to force value by the magnitude of voltage of sensor, in order to guarantee the stability of signal, need by force value after filtering after device output obtain final external pressure.Once this sensor breaks down, this module can provide a particular value and replace calculated value output, in order to guarantee the engine running under fault mode.The processing of boost-pressure sensor after the processing of boost-pressure sensor and starting when boost-pressure sensor puocessing module comprises starting.During engine start, according to the characteristic value of boost-pressure sensor, the magnitude of voltage of sensor is converted to boost pressure value and directly exports; After engine start success, calculate the average voltage level of a period of time inner sensor, according to the characteristic value of boost-pressure sensor, obtain boost pressure mean value again, in order to guarantee the stability of signal, need by pressure mean values after filtering after device output obtain boost pressure, this force value also needs engine speed and altitude to revise it, in order to adapt to varying environment demand.Once this sensor breaks down, this module can provide a particular value and replace calculated value output, in order to guarantee the engine running under fault mode.
Control module comprises feedforward control, feedback control and exhaust gas by-pass valve dutycycle are calculated, feedforward control can be by Pressure control near expectation boost pressure, feedback control can realize the quick high accuracy response to boost pressure, what exhaust gas by-pass valve dutycycle was calculated output is exhaust gas by-pass valve duty cycle signals, for Hardware drive module.Characteristic and the gas property exploitation of feedforward control based on exhaust gas bypass formula pressurized machine, sets turbo machine institute work and equals gas compressor institute work.It comprises compressor model and turbine model.The MAF of compressor model by gas compressor and the front/rear pressure of gas compressor, temperature computation gas compressor institute work (in design process, think gas each become to be grouped into keep constant).Turbine model obtains the flow of the turbo machine of flowing through of expectation according to gas compressor institute's work and the front/rear pressure of turbo machine, temperature computation, then by this flow and exhaust gas flow, calculates the exhaust gas by-pass valve outlet pressure of expectation.The difference of feedback control based on actual supercharge pressure and expectation boost pressure, calculates PID modifying factor by PID controller, and the output value of feedforward control is revised.Exhaust gas by-pass valve dutycycle computation model mainly, according to expecting boost pressure and calculating the dutycycle of exhaust gas by-pass valve through the revised expectation exhaust gas by-pass valve of PID outlet pressure, is exported to Hardware drive module.
Finally, Hardware drive module receives the exhaust gas by-pass valve duty cycle signals of control module output, and be converted into electrical signal, by automatically controlled connector assembly, electrical signal is input to vacuum governor again, vacuum governor is controlled exhaust gas by-pass valve outlet pressure according to the size of dutycycle, the large young pathbreaker of this pressure determines the spring lift in vacuum diaphragm plate valve, thereby can control the opening angle of exhaust gas by-pass valve, has finally realized the control to actual supercharge pressure.
Claims (1)
1. exhaust gas bypass formula pressurized machine high-precision control system, it is characterized in that: the right-hand relief opening that has of exhaust gas bypass formula pressurized machine right-hand member turbo machine, on relief opening, there is exhaust gas by-pass valve, exhaust gas bypass formula pressurized machine left end is gas compressor, on turbo machine and gas compressor, add pressure-temperature sensor, exhaust gas bypass formula pressurized machine top is fixedly connected with vacuum governor, the front end port of vacuum governor front end is connected with the air inlet pipeline of gas compressor, the boost pressure port of vacuum governor rear end is connected with gas compressor output terminal, in vacuum diaphragm valve pocket, by vacuum diaphragm, vacuum diaphragm plate valve is divided into upper chamber and lower chambers, the bypass valve outlet pressure port of vacuum governor upper end is held and is connected with the upper chamber of vacuum diaphragm plate valve, bottom chamber has spring, vacuum diaphragm is connected with connecting rod one end by spring, the connecting rod the other end connects exhaust gas by-pass valve, there is pressure-temperature sensor the port of the upper chamber of vacuum diaphragm plate valve, pressure-temperature sensor is connected with sensor puocessing module, sensor puocessing module is connected with control module by datawire, control module is connected with the Hardware drive module of automatically controlled connector assembly on vacuum governor again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420041218.7U CN203717114U (en) | 2014-01-23 | 2014-01-23 | Waste gas bypass type pressurizer high-precision control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420041218.7U CN203717114U (en) | 2014-01-23 | 2014-01-23 | Waste gas bypass type pressurizer high-precision control system |
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| Publication Number | Publication Date |
|---|---|
| CN203717114U true CN203717114U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420041218.7U Expired - Lifetime CN203717114U (en) | 2014-01-23 | 2014-01-23 | Waste gas bypass type pressurizer high-precision control system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105518272A (en) * | 2014-07-17 | 2016-04-20 | 戴科知识产权控股有限责任公司 | Aspirated relief valve for a turbocharging system |
| CN106968780A (en) * | 2017-06-02 | 2017-07-21 | 广西玉柴机器股份有限公司 | Gas machine turbocharger control systems |
| 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 |
| CN108590868A (en) * | 2017-12-22 | 2018-09-28 | 中国第汽车股份有限公司 | A kind of diagnostic method and system of natural gas engine turbocharger control systems |
| CN112628450A (en) * | 2020-12-22 | 2021-04-09 | 潍柴动力股份有限公司 | Method and device for controlling current of electromagnetic valve |
| CN113250809A (en) * | 2021-05-11 | 2021-08-13 | 昆明云内动力股份有限公司 | WGT supercharger bypass valve actuator |
-
2014
- 2014-01-23 CN CN201420041218.7U patent/CN203717114U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105518272A (en) * | 2014-07-17 | 2016-04-20 | 戴科知识产权控股有限责任公司 | Aspirated relief valve for a turbocharging system |
| CN105518272B (en) * | 2014-07-17 | 2018-04-27 | 戴科知识产权控股有限责任公司 | Air suction type pressure reducing valve for turbo charge system |
| CN106968780A (en) * | 2017-06-02 | 2017-07-21 | 广西玉柴机器股份有限公司 | Gas machine turbocharger control systems |
| 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 |
| CN108590868A (en) * | 2017-12-22 | 2018-09-28 | 中国第汽车股份有限公司 | A kind of diagnostic method and system of natural gas engine turbocharger control systems |
| CN108590868B (en) * | 2017-12-22 | 2021-01-12 | 中国第一汽车股份有限公司 | Diagnosis method and system for natural gas engine supercharger control system |
| 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 |
| CN112628450A (en) * | 2020-12-22 | 2021-04-09 | 潍柴动力股份有限公司 | Method and device for controlling current of electromagnetic valve |
| CN113250809A (en) * | 2021-05-11 | 2021-08-13 | 昆明云内动力股份有限公司 | WGT supercharger bypass valve actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |