CN106768204A - A kind of engine intake airflow calibration system and scaling method - Google Patents
A kind of engine intake airflow calibration system and scaling method Download PDFInfo
- Publication number
- CN106768204A CN106768204A CN201611260884.XA CN201611260884A CN106768204A CN 106768204 A CN106768204 A CN 106768204A CN 201611260884 A CN201611260884 A CN 201611260884A CN 106768204 A CN106768204 A CN 106768204A
- Authority
- CN
- China
- Prior art keywords
- intake
- ecu
- engine
- air inlet
- flow sensor
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The present invention relates to technical field of engines, disclose a kind of engine intake airflow calibration system, including engine and ECU, the engine is provided with air inlet pipeline and gas exhaust piping, the gas exhaust piping is connected by exhaust pipe and pressure piping with the air inlet pipeline respectively, the exhaust pipe is provided with EGR valve, the pressure piping is provided with booster, the inlet end and atmosphere of the air inlet pipeline, the air inlet pipeline is sequentially provided with intake flow sensor and intake-air throttle valve near the inlet end, the intake flow sensor, intake-air throttle valve, EGR valve and booster are connected with the ECU；The ECU is built-in with intake flow sensor characteristic curve module.The present invention can reduce the artificial workload for demarcating engine intake airflow.The invention also discloses a kind of charge flow rate scaling method with self-learning function.
Description
Technical field
The present invention relates to technical field of engines, more particularly to a kind of engine intake airflow calibration system and demarcation side
Method.
Background technology
Europe six increases intake flow sensor (HFM) using the engine of EGR routes, and hair is entered for measuring fresh air
The amount of motivation, and ECU is inputed to, it is easy to accurate EGR to control.If demarcation is inaccurate, ECU can carry out the control of mistake, shadow
Ring the performance and emission result of engine.Different vehicle configurations can cause the change of air inlet pipeline, every kind of situation of change (influence
Air inflow) it is required for real vehicle to demarcate, it is necessary to substantial amounts of manpower and time.
The content of the invention
(1) technical problem to be solved
The technical problem to be solved in the present invention is how to reduce the artificial workload for demarcating engine intake airflow.
(2) technical scheme
A kind of in order to solve the above-mentioned technical problem, engine intake airflow calibration system of present invention offer, including engine,
Booster and ECU, the engine are provided with air inlet pipeline and gas exhaust piping, the gas exhaust piping by exhaust pipe with it is described enter
Air pipe is connected, and the exhaust pipe is provided with EGR valve, the inlet end and atmosphere of the air inlet pipeline, the air inlet pipeline
Intake flow sensor and intake-air throttle valve, the intake flow sensor, air inlet restriction are sequentially provided near the inlet end
Valve, EGR valve and booster are connected with the ECU；The ECU is built-in with intake flow sensor characteristic curve module.
Wherein, the booster includes the turbine and compressor that are connected by connecting shaft, and the turbine is located at described
In gas exhaust piping, the compressor is located in the air inlet pipeline, and the connecting shaft is connected with the ECU.
The present invention also provides a kind of charge flow rate scaling method with self-learning function, and it comprises the following steps：
Step S1, engine start, and maintain idle running；
Step S2, vehicle hang neutral, step on brake and do not unclamp, and are consecutively pressed-unclamp air-conditioning request switch multiple；
Step S3, ECU enters charge flow rate self study calibration mode；
Step S4, ECU controls EGR valve and intake-air throttle valve standard-sized sheet, ECU to record the cycle of now intake flow sensor,
And be designated as the period 1, if period 1 fluctuation is no more than the first setting time, continue self study, if engine misses or
Period 1 fluctuates more than the first setting time, then exit self study；
Step S5, ECU controls EGR valve aperture and booster aperture to be 0, and adjust air inlet restriction valve opening for 10%~
20%, the cycle is equal to the period 1, the flow value that now ECU is calculated is designated as first flow, write-in charge flow rate is passed
In the characteristic curve of sensor；
Step S6, by step S5, increase air inlet restriction valve opening, with the period 1 as initial point, the second setting time is step
It is long, multi-group data is recorded, in the characteristic curve of write-in intake flow sensor, until air inlet restriction valve opening reaches standard-sized sheet；
Step S7, maintenance intake-air throttle valve standard-sized sheet, EGR valve are fully closed, and ECU lifts engine speed to the first setting speed,
And control the booster aperture to increase since 0%, and successively in the characteristic curve of record flow value write-in intake flow sensor；
Step S8, respectively lifting engine speed are the second rotating speed, maximum speed, repeat step S7；
Step S9, control EGR valve are fully closed, intake-air throttle valve standard-sized sheet, vehicle loading, hang shelves operation, control booster aperture
It is stepped up to 100% from 0%；
Step S10, self study are demarcated and completed, and after engine returns to idling, are closed the flame-out rear self-studying mode of key and are exited.
Wherein, the first setting time is 20us, and the second setting time is 10us.
Wherein, in step S5, if the cycle is not equal to the period 1, ECU reduces engine idling to set step-length,
The cycle is set to be equal to the period 1.
(3) beneficial effect
Compared with prior art, the present invention has advantages below：
A kind of engine intake airflow calibration system and scaling method that the present invention is provided, by triggering ECU self study work(
Can, ECU is stored the result into ECU data automatically into charge flow rate calibration mode, and all of adjustment is automatic complete
Into the demarcation difference save the workload of artificial demarcation engine intake airflow and avoid the demarcation personnel of different abilities from causing.
Brief description of the drawings
Fig. 1 is a kind of annexation schematic diagram of engine intake airflow calibration system of the invention；
Fig. 2 is the CUR characteristic curve tables of intake flow sensor characteristic curve module of the invention；
In figure：1：Engine；2：Air inlet pipeline；3：Gas exhaust piping；4：Exhaust pipe；5：Connecting shaft；6：Charge flow rate is passed
Sensor；7：Intake-air throttle valve；8：EGR valve；9：Compressor；10：Turbine.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the invention, it is necessary to explanation, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score,
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of and describes the present invention and simplify to describe, rather than instruction or dark
Showing the device or element of meaning must have specific orientation, with specific azimuth configuration and operation therefore it is not intended that right
Limitation of the invention.Additionally, term " first ", " second ", " the 3rd " etc. be only used for describe purpose, and it is not intended that indicate or
Imply relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
Two connections of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Additionally, in the description of the invention, unless otherwise indicated, " multiple ", " many ", " multigroup " be meant that two or
Two or more.
As shown in figure 1, being a kind of engine intake airflow calibration system for providing of the invention, it includes engine 1, supercharging
Device and ECU (electronic control unit), ECU are that a kind of signal being input into according to each sensor carries out computing, treatment, judges, then
The controller of output order control actuator action, the engine 1 is provided with air inlet pipeline 2 and gas exhaust piping 3, the blast pipe
Road 3 is connected by exhaust pipe 4 with the air inlet pipeline 2, the exhaust pipe 4 is provided with EGR valve 8, and the air inlet pipeline 2 enters
Gas end and atmosphere, the air inlet pipeline 2 are sequentially provided with intake flow sensor 6 and intake-air throttle valve near the inlet end
7, the intake flow sensor 6, intake-air throttle valve 7, EGR valve 8 and booster are connected with the ECU, by ECU according to measuring
Charge flow rate control the aperture of each valve；The ECU is built-in with intake flow sensor characteristic curve module, and preferably CUR is special
Linearity curve module, CUR characteristic curves are a kind of data forms of two coordinates, determine X-axis, and Y-axis is gone out by table correspondence, are such as schemed
Shown in 2.
Specifically, the booster includes the turbine 10 and compressor 9 that are connected by connecting shaft 5, the turbine 10
In the gas exhaust piping 3, the compressor 9 is located in the air inlet pipeline 2, and turbine 10 is using the discharge of engine 1
Exhaust energy drives coaxial compressor 9 to do work, and compressor 9 is driven by turbine 10 and air is pressurized, with increase into
The admission pressure of air pipe 2, the connecting shaft 5 is connected with the ECU, and the rotating speed of connecting shaft 5 is controlled by the ECU.
The present invention also provides a kind of charge flow rate scaling method with self-learning function, and it may include steps of：
Step S1, engine start, after warming-up and maintain idle running；
Step S2, vehicle hang neutral, step on brake and do not unclamp, and are consecutively pressed-unclamp air-conditioning request switch multiple such as 3
It is secondary；
Step S3, ECU enters charge flow rate self study calibration mode；
Step S4, ECU controls EGR valve and intake-air throttle valve standard-sized sheet, ECU to record the cycle T of now intake flow sensor,
And period 1 T1 is designated as, if period 1 T1 fluctuations are no more than the first setting time such as 20us, continue self study, if
Engine misses or period 1 T1 fluctuations then exit self study more than the first setting time 20us, and reason is exited in ECU promptings,
Proceed after requiring to look up reason；
Step S5, ECU controls EGR valve aperture and booster aperture to be 0, and adjust air inlet restriction valve opening for 10%~
20%, the cycle T is equal to period 1 T1, the flow value A that now ECU is calculated is designated as first flow A1, write air inlet
In the CUR characteristic curves of flow sensor；
Step S6, by step S5, increase air inlet restriction valve opening, with period 1 T1 as initial point, the second setting time example
If 10us is step-length, multi-group data is recorded, for example, T2=T1-10us, T3=T1-20us ..., record charge flow rate A2, A3 ...,
In the CUR characteristic curves of write-in intake flow sensor, until air inlet restriction valve opening reaches standard-sized sheet (100%)；
Step S7, maintenance intake-air throttle valve standard-sized sheet, EGR valve are fully closed, and ECU lifts engine speed to the first setting speed example
Such as 1300rpm, and the booster aperture is controlled to increase since 0%, and record flow value writes intake flow sensor successively
In CUR characteristic curves；
Step S8, respectively lifting engine speed be the second rotating speed such as 1800rpm, maximum speed (each engine
Maximum speed is sign specified maximum (top) speed on the engine), repeat step S7；
Step S9, control EGR valve are fully closed, intake-air throttle valve standard-sized sheet, vehicle loading, hang shelves operation, control booster aperture
It is stepped up to 100% from 0%, target is the cycle T that controlling cycle T is postponed in step S8；
Step S10, so far self study are demarcated and completed, and after engine returns to idling, close the flame-out rear self-studying mode of key
Exit.
Wherein, the first setting time is preferably 20us, and the second setting time is preferably 10us.
Wherein, in step S5, if the cycle T is not equal to period 1 T1, ECU is dropped with setting step-length such as 10rpm
Low engine idling, makes the cycle T be equal to period 1 T1, and stable operation 15s.
As can be seen from the above embodiments, after present invention triggering self study calibration mode, all of adjustment is automatic complete
Into, the artificial workload for demarcating engine intake airflow is save, it also avoid the demarcation that the demarcation personnel of different abilities cause poor
It is different.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (5)
1. a kind of engine intake airflow calibration system, including engine, booster and ECU, the engine are provided with air inlet pipe
Road and gas exhaust piping, the gas exhaust piping are connected by exhaust pipe with the air inlet pipeline, it is characterised in that the flue gas leading
Road is provided with EGR valve, and the inlet end and atmosphere of the air inlet pipeline, the air inlet pipeline are sequentially provided near the inlet end
Intake flow sensor and intake-air throttle valve, the intake flow sensor, intake-air throttle valve, EGR valve and booster are and institute
ECU is stated to be connected；The intake flow sensor is built-in with intake flow sensor characteristic curve module.
2. engine intake airflow calibration system according to claim 1, it is characterised in that the booster includes passing through
The turbine and compressor of connecting shaft connection, the turbine are located in the gas exhaust piping, and the compressor enters described in
In air pipe, the connecting shaft is connected with the ECU.
3. a kind of charge flow rate scaling method with self-learning function, it is characterised in that comprise the following steps：
Step S1, engine start, and maintain idle running；
Step S2, vehicle hang neutral, step on brake and do not unclamp, and are consecutively pressed-unclamp air-conditioning request switch multiple；
Step S3, ECU enters charge flow rate self study calibration mode；
Step S4, ECU controls EGR valve and intake-air throttle valve standard-sized sheet, ECU to record the cycle of now intake flow sensor, and remembers
It is the period 1, if period 1 fluctuation is no more than the first setting time, continues self study, if engine misses or first
Cyclic swing then exits self study more than the first setting time；
Step S5, ECU controls EGR valve aperture and booster aperture to be 0, and adjust air inlet restriction valve opening for 10%~
20%, the cycle is equal to the period 1, the flow value that now ECU is calculated is designated as first flow, write-in charge flow rate is passed
In the characteristic curve of sensor；
Step S6, by step S5, increase air inlet restriction valve opening, with the period 1 as initial point, the second setting time is step-length, note
Record multi-group data, in the characteristic curve of write-in intake flow sensor, until air inlet restriction valve opening reaches standard-sized sheet；
Step S7, maintenance intake-air throttle valve standard-sized sheet, EGR valve are fully closed, and ECU lifts engine speed to the first setting speed, and controls
Booster aperture processed increases since 0%, and successively in the characteristic curve of record flow value write-in intake flow sensor；
Step S8, respectively lifting engine speed are the second rotating speed, maximum speed, repeat step S7；
Step S9, control EGR valve are fully closed, intake-air throttle valve standard-sized sheet, vehicle loading, hang shelves operation, control booster aperture from 0%
It is stepped up to 100%；
Step S10, self study are demarcated and completed, and after engine returns to idling, are closed the flame-out rear self-studying mode of key and are exited.
4. the charge flow rate scaling method with self-learning function according to claim 3, it is characterised in that the first setting
Time is 20us, and the second setting time is 10us.
5. the charge flow rate scaling method with self-learning function according to claim 3, it is characterised in that step S5
In, if the cycle is not equal to the period 1, ECU makes the cycle be equal to first to set step-length reduction engine idling
Cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611260884.XA CN106768204B (en) | 2016-12-30 | 2016-12-30 | A kind of engine intake airflow scaling method with self-learning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611260884.XA CN106768204B (en) | 2016-12-30 | 2016-12-30 | A kind of engine intake airflow scaling method with self-learning function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106768204A true CN106768204A (en) | 2017-05-31 |
| CN106768204B CN106768204B (en) | 2019-11-01 |
Family
ID=58954750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611260884.XA Active CN106768204B (en) | 2016-12-30 | 2016-12-30 | A kind of engine intake airflow scaling method with self-learning function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106768204B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195591A (en) * | 2017-12-29 | 2018-06-22 | 潍柴动力股份有限公司 | The modification method and system of a kind of air-mass flow |
| CN109324643A (en) * | 2018-10-24 | 2019-02-12 | 徐兆熙 | A kind of intelligence water flow control device and its control method |
| CN111007717A (en) * | 2019-12-24 | 2020-04-14 | 天津雷沃发动机有限公司 | Non-road state four-engine TVA calibration method |
| CN111413100A (en) * | 2020-03-26 | 2020-07-14 | 安徽华菱汽车有限公司 | Error reporting method and system for simulating exhaust gas circulation quantity abnormality of EGR (exhaust gas recirculation) system |
| CN113884307A (en) * | 2021-08-19 | 2022-01-04 | 潍柴动力股份有限公司 | Method and system for detecting accuracy of air inflow sensor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0345524A1 (en) * | 1988-05-23 | 1989-12-13 | Toyota Jidosha Kabushiki Kaisha | Apparatus for estimating intake air amount |
| CN1763492A (en) * | 2004-10-20 | 2006-04-26 | 北京交通大学 | Electrically controlled natural gas engine scaling system and control method |
| CN101236101A (en) * | 2007-01-31 | 2008-08-06 | 株式会社电装 | Air flow quantity correcting device |
| CN101413445A (en) * | 2007-10-19 | 2009-04-22 | 日产自动车株式会社 | Intake air flow rate detection device and method for internal combustion engine |
| CN102967350A (en) * | 2012-11-28 | 2013-03-13 | 柳青 | Calibration device and calibration method for automobile air mass flow meter |
| CN105545501A (en) * | 2016-01-21 | 2016-05-04 | 吉林大学 | Control system and control method for reducing NOx emissions of diesel engine under all working conditions |
| CN105736124A (en) * | 2016-01-28 | 2016-07-06 | 潍柴动力股份有限公司 | Diesel engine air inlet control device and control method |
| CN106017910A (en) * | 2016-07-29 | 2016-10-12 | 无锡隆盛科技股份有限公司 | EGR valve flow testing system |
-
2016
- 2016-12-30 CN CN201611260884.XA patent/CN106768204B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0345524A1 (en) * | 1988-05-23 | 1989-12-13 | Toyota Jidosha Kabushiki Kaisha | Apparatus for estimating intake air amount |
| CN1763492A (en) * | 2004-10-20 | 2006-04-26 | 北京交通大学 | Electrically controlled natural gas engine scaling system and control method |
| CN101236101A (en) * | 2007-01-31 | 2008-08-06 | 株式会社电装 | Air flow quantity correcting device |
| CN101413445A (en) * | 2007-10-19 | 2009-04-22 | 日产自动车株式会社 | Intake air flow rate detection device and method for internal combustion engine |
| CN102967350A (en) * | 2012-11-28 | 2013-03-13 | 柳青 | Calibration device and calibration method for automobile air mass flow meter |
| CN105545501A (en) * | 2016-01-21 | 2016-05-04 | 吉林大学 | Control system and control method for reducing NOx emissions of diesel engine under all working conditions |
| CN105736124A (en) * | 2016-01-28 | 2016-07-06 | 潍柴动力股份有限公司 | Diesel engine air inlet control device and control method |
| CN106017910A (en) * | 2016-07-29 | 2016-10-12 | 无锡隆盛科技股份有限公司 | EGR valve flow testing system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195591A (en) * | 2017-12-29 | 2018-06-22 | 潍柴动力股份有限公司 | The modification method and system of a kind of air-mass flow |
| CN109324643A (en) * | 2018-10-24 | 2019-02-12 | 徐兆熙 | A kind of intelligence water flow control device and its control method |
| CN111007717A (en) * | 2019-12-24 | 2020-04-14 | 天津雷沃发动机有限公司 | Non-road state four-engine TVA calibration method |
| CN111413100A (en) * | 2020-03-26 | 2020-07-14 | 安徽华菱汽车有限公司 | Error reporting method and system for simulating exhaust gas circulation quantity abnormality of EGR (exhaust gas recirculation) system |
| CN113884307A (en) * | 2021-08-19 | 2022-01-04 | 潍柴动力股份有限公司 | Method and system for detecting accuracy of air inflow sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106768204B (en) | 2019-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106768204A (en) | A kind of engine intake airflow calibration system and scaling method | |
| CN101305171B (en) | Control device of internal combustion engine | |
| CN102797571B (en) | For estimating the device of amount of exhaust gas recirculation | |
| CN100467842C (en) | Control device for internal combustion engine | |
| JP5389238B1 (en) | Waste gate valve control device for internal combustion engine | |
| CN100538057C (en) | Learning-oriented exhaust gas recirculation valve position control | |
| JP5379918B1 (en) | Control device for internal combustion engine | |
| US10100753B2 (en) | Control device for supercharged engine | |
| CN102782294A (en) | Control device for internal combustion engine | |
| JP2005220888A (en) | Supercharging pressure presuming device of internal combustion engine with supercharger | |
| JP2006242065A (en) | Control device for internal combustion engine with supercharger | |
| JP2008045410A (en) | Control device of internal combustion engine with supercharger | |
| CN103628972A (en) | Method for controlling a variable charge air cooler | |
| CN103168158B (en) | The control gear of internal-combustion engine | |
| CN101839168A (en) | Control has the system and method for the supercharged engine of intake-air throttle valve and intake duct throttle valve | |
| US20150308332A1 (en) | Apparatus and method of controlling engine system | |
| US9915197B2 (en) | Control method for variable geometry exhaust turbine | |
| CN109469567A (en) | A kind of EGR valve and throttle valve coupling control method | |
| US9228538B2 (en) | Internal combustion engine control apparatus | |
| CN203403990U (en) | Engine egr system | |
| JP2018178928A (en) | Controller of internal combustion engine | |
| CN103282628A (en) | Internal combustion engine control apparatus | |
| JP2020002818A (en) | Control device for internal combustion engine | |
| JP4853471B2 (en) | Control device for an internal combustion engine with a supercharger | |
| US20170009709A1 (en) | Driving device for driving a vehicle as well as method and computer program product for operating this driving device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |