CN101629526B - Method for diagnosing and processing fault of throttle position sensor - Google Patents
Method for diagnosing and processing fault of throttle position sensor Download PDFInfo
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- CN101629526B CN101629526B CN 200810116645 CN200810116645A CN101629526B CN 101629526 B CN101629526 B CN 101629526B CN 200810116645 CN200810116645 CN 200810116645 CN 200810116645 A CN200810116645 A CN 200810116645A CN 101629526 B CN101629526 B CN 101629526B
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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
- Y02T10/40—Engine management systems
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Abstract
The invention relates to a method for diagnosing and processing a fault of a throttle position sensor. The method adopts that: when an engine idles, a throttle position sensor signal acquired by the ECU judgment is compared with a sensor signal; and if the throttle position sensor is judged to be faulty, an engine control unit executes an emergency measure to carry out emergency processing on vehicles. The method can detect the situation of the fault of the throttle position sensor in time to ensure driving safety of the vehicles.
Description
Technical field
The present invention relates to the vehicle failure processing method, especially a kind of method for diagnosing and processing fault of throttle position sensor.
Background technique
TPS (throttle position sensor, throttle position sensor, as follows) be most important sensor in the Auto Electronic Controlled System, be used for electronic fuel injection, electronic ignition, automatic transmission, cruise system dispatch control system.The effect of throttle position sensor is that the position of closure and aperture are converted to voltage signal, and this signal is transferred to ECU (Engine control unit, control unit of engine), judges the foundation of engine operation condition as ECU.If throttle position sensor breaks down, then ECU must take certain measure to substitute the instruction of normal driver's throttle, makes motor fall power and continues operation, repairs thereby vehicle can be reached the maintenance station.
The present judgement of the fault of throttle position sensor being judged the maximum value, minimum value (judging whether to exceed the normal range (NR) of sensor) and the reasonable value that are based on sensor signal.The patent disclosure of korean patent application publication number KR100298747B a kind of method of diagnosing the TPS fault, but this method must go to obtain the minimum and maximum value for fault diagnosis during automobile running, this has just limited the use of this method for diagnosing faults.And the processing method that in the prior art throttle position sensor is broken down is not considered whether normal operation of other operation parts of automobile, all uses same fault treatment measure, and this can cause the faulty operation of ECU.
Summary of the invention
The purpose of this invention is to provide a kind of method for diagnosing and processing fault of throttle position sensor.
Technological scheme of the present invention is:
A kind of method for diagnosing and processing fault of throttle position sensor may further comprise the steps:
S1: when idling, obtain the aperture signal of closure by throttle position sensor, and described aperture signal is transferred to control unit of engine;
S2: in diagnostic application in the cycle, control unit of engine is transferred to the semaphore that closure is used for the control throttle opening according to control unit of engine under the idling mode, the aperture signal that obtains with above-mentioned throttle position sensor compares, if deviation surpasses the predetermined percentage that control unit of engine is transferred to the semaphore of closure, judge that then throttle position sensor breaks down;
S3: break down if detect throttle position sensor, then whether control unit of engine detection air inflow sensor breaks down;
S4: according to the result that step S3 detects, control unit of engine is carried out different emergency processing measures vehicle is carried out emergency processing.
Be among the described step S1 in the situation of engine idle, obtain the aperture signal of closure.
The described predetermined percentage of step S2 is 5%.
The described diagnostic application cycle of step S2 is 10 microseconds.
The described emergency processing measure of step S4 is:
S31: control unit of engine is judged whether fault of air inflow sensor, if the air inflow sensor is normal, then obtains the aperture signal value that the closure fault value replaces throttle sensor based on the speed of a motor vehicle and two values of air inlet quality;
S32: in the situation that throttle sensor and air inflow sensor break down simultaneously, then adopt the Emergency use calibration value to replace the aperture signal value of throttle sensor.
Described closure fault value and Emergency use calibration value all are stored in the nominal data table of control unit of engine.
The rotating speed of limiting engine before the step S4.
Forbid first before the step S4 that air fuel ratio uses regulatory function, TPS to adapt to regulatory function, pinking adapts to regulatory function, idling adaptation regulatory function and external pressure and adapts to regulatory function.
Forbid first the diagnosis of tank pressure sensing device, the diagnosis of tank pressure sensing device, the diagnosis of post oxygen sensor signal, idling rationality diagnostic, EVAP Evaporative System diagnosis, oil supply system diagnosis, diagnosis switching time of front lambda sensor, front lambda sensor frequency-diagnostic, the diagnosis of catalyzer power, post oxygen sensor diagnosis switching time before the step S4.
Beneficial effect
ECU of the present invention keeps to throttle position sensor (TPS) signal monitoring constantly for the diagnostic techniques of throttle position sensor (TPS) signal, when finding fault, take immediately to use correction measure, guarantee that ECU is to the control ability of throttle position, the fault that can not drive, thereby the assurance normal working of engine, vehicle safe driving.
Description of drawings
Fig. 1 is method for diagnosing and processing fault of throttle position sensor flow chart of the present invention.
Embodiment
Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
This diagnostic techniques only is in just can carry out under the idling mode at vehicle.ECU is the closure output signal, the aperture of closure during with the control idling; Same throttle position sensor is transferred to ECU with the aperture signal, whether meets the control requirement of ECU fully in order to diagnose throttle opening; And the given application cycle is 10 microseconds.
As shown in Figure 1, throttle position sensor (TPS) is transferred to ECU with the throttle opening semaphore, and the semaphore of controlling throttle opening with ECU compares.If two comparison signal phase residual quantity within a cycle judge then that less than or equal to 5% throttle position sensor is working properly; If two comparison signal phase residual quantity within a cycle judge then that greater than 5% throttle position sensor breaks down.When starting the TPS fault, ECU takes corresponding limp-home operation (emergency processing measure) that closure is carried out emergency operation.Before taking this emergency processing measure, need to judge whether the air inflow sensor breaks down.
The limp-home operating method is:
When the TPS signal broke down, TPS was replaced by the limp-home value of TPS.Specifically be divided into following two kinds of situations.
One, when only having throttle sensor (TPS) fault, air inflow sensor (MAF, when Mass air flow) normal, the closure fault value of searching in the nominal data table based on the speed of a motor vehicle and two values of air inlet quality replaces the present signal value of throttle sensor, this nominal data table is stored among the ECU, set up a corresponding nominal data table for the motor of different model, this table is set up based on the various situations of considering vehicle failure, in the prior art, can be easy to obtain the nominal data table for certain model.Be 1000rpm such as 1.6 liters of motors of 4 cylinders speed of a motor vehicle in the case, the air inlet quality is 400mg/stk, and then TPS is 37.26.
Two, in the situation that throttle sensor (TPS) and air inflow (MAF) sensor lost efficacy simultaneously, come the present signal value of throttle sensor with the Emergency use scalar quantity in the nominal data table.This scalar quantity also obtains by searching the nominal data table, and being one is 44.05 for satisfying the Emergency use amount of normal working of engine such as this scalar quantity among the ECU of 1.6 liters of motors of 4 cylinders, and this moment, the rotating speed of motor was limited.
The application of diagnostic method of the present invention is assisted:
The engine speed restriction.If in closure and the affirmation of air inflow sensor simultaneous faults, for four cylinder engine, the rotating speed of motor generally is restricted to and can not surpasses 3008rpm (revolutions per minute rpm); If when throttle sensor and idle valve fault, engine speed generally is restricted to and can not surpasses 1504rpm.
When the TPS fault, the value that sends to the ECU value is arranged to FFH, and expression TPS has fault.
For guaranteeing that this diagnostic techniques can move smoothly, because be subject to the impact of following adaptation regulatory function when this diagnostic techniques is carried out, must be under an embargo: Lambda (air fuel ratio) uses regulatory function; TPS adapts to regulatory function; Pinking adapts to regulatory function; Idling adapts to regulatory function; External pressure adapts to regulatory function.
For guaranteeing that this diagnostic techniques can move smoothly, because when this diagnostic techniques is carried out, be subject to the impact of following diagnostic function, must be under an embargo: tank pressure sensing device diagnosis (noise signal); Tank pressure sensing device diagnosis (constant signal); The diagnosis of post oxygen sensor signal; The idling rationality diagnostic; EVAP (evaporative system EVAP Evaporative System) diagnosis; The oil supply system diagnosis; Diagnosis switching time of front lambda sensor; Front lambda sensor frequency-diagnostic; The diagnosis of catalyzer power; Post oxygen sensor diagnosis switching time.
ECU of the present invention keeps taking immediately to use correction measure to throttle position sensor (TPS) signal monitoring when finding fault for the diagnostic techniques of throttle position sensor (TPS) signal constantly.Guarantee normal working of engine, vehicle safe driving.
Although the present invention specifically illustrates and illustrates in conjunction with a preferred embodiment; but the personnel that are familiar with this technical field are appreciated that; wherein no matter still can make various changes in detail in form, this does not deviate from Spirit Essence of the present invention and scope of patent protection.
Claims (8)
1. a method for diagnosing and processing fault of throttle position sensor is characterized in that, may further comprise the steps:
S1: obtain the aperture signal of closure by throttle position sensor, and described aperture signal is transferred to control unit of engine;
S2: in diagnostic application in the cycle, control unit of engine is transferred to the semaphore that closure is used for the control throttle opening according to control unit of engine under the idling mode, the aperture signal that obtains with above-mentioned throttle position sensor compares, if deviation surpasses the predetermined percentage that control unit of engine is transferred to the semaphore of closure, judge that then throttle position sensor breaks down;
S3: break down if detect throttle position sensor, then whether control unit of engine detection air inflow sensor breaks down;
S4: according to the result that step S3 detects, control unit of engine is carried out different emergency processing measures vehicle is carried out emergency processing;
Wherein, be among the described step S1 in the situation of engine idle, obtain the aperture signal of closure.
2. method for diagnosing and processing fault of throttle position sensor as claimed in claim 1 is characterized in that, the described emergency processing measure of step S4 is:
S31: if the air inflow sensor is normal, then obtain the aperture signal value that the closure fault value replaces throttle sensor based on the speed of a motor vehicle and two values of air inlet quality;
S32: in the situation that throttle sensor and air inflow sensor break down simultaneously, then adopt the Emergency use calibration value to replace the aperture signal value of throttle sensor.
3. method for diagnosing and processing fault of throttle position sensor as claimed in claim 1 is characterized in that, the described default percentage of step S2 is 5%.
4. method for diagnosing and processing fault of throttle position sensor as claimed in claim 1 is characterized in that, the described diagnostic application cycle of step S2 is 10 microseconds.
5. method for diagnosing and processing fault of throttle position sensor as claimed in claim 2 is characterized in that, described closure fault value and Emergency use calibration value all are stored in the nominal data table of control unit of engine.
6. method for diagnosing and processing fault of throttle position sensor as claimed in claim 1 is characterized in that, the rotating speed of limiting engine before the step S4.
7. method for diagnosing and processing fault of throttle position sensor as claimed in claim 1, it is characterized in that, forbid before the step S4 that air fuel ratio uses regulatory function, throttle position sensor to adapt to regulatory function, pinking adapts to regulatory function, idling adaptation regulatory function and external pressure and adapts to regulatory function.
8. method for diagnosing and processing fault of throttle position sensor as claimed in claim 1, it is characterized in that, forbid the diagnosis of tank pressure sensing device, the diagnosis of tank pressure sensing device, the diagnosis of post oxygen sensor signal, idling rationality diagnostic, EVAP Evaporative System diagnosis, oil supply system diagnosis, diagnosis switching time of front lambda sensor, front lambda sensor frequency-diagnostic, the diagnosis of catalyzer power, post oxygen sensor diagnosis switching time before the step S4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200810116645 CN101629526B (en) | 2008-07-14 | 2008-07-14 | Method for diagnosing and processing fault of throttle position sensor |
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| CN 200810116645 CN101629526B (en) | 2008-07-14 | 2008-07-14 | Method for diagnosing and processing fault of throttle position sensor |
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| CN101629526A CN101629526A (en) | 2010-01-20 |
| CN101629526B true CN101629526B (en) | 2013-04-24 |
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| CN 200810116645 Expired - Fee Related CN101629526B (en) | 2008-07-14 | 2008-07-14 | Method for diagnosing and processing fault of throttle position sensor |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121834B (en) * | 2010-11-30 | 2012-07-04 | 力帆实业(集团)股份有限公司 | Detection method for throttle valve position sensor detection device |
| CN104121095B (en) * | 2013-04-24 | 2018-12-25 | 联合汽车电子有限公司 | The method for diagnosing faults of speed probe |
| CN104340200B (en) * | 2013-08-02 | 2016-12-28 | 上海汽车集团股份有限公司 | A kind of diagnostic method of brake pedal position sensor fault |
| JP5873510B2 (en) * | 2014-01-16 | 2016-03-01 | 富士重工業株式会社 | Shutter abnormality notification device in variable duct |
| CN107562007B (en) * | 2017-08-23 | 2019-09-13 | 中冶赛迪工程技术股份有限公司 | Control method and system based on fan-shaped section position sensor malfunction |
| US10026241B1 (en) * | 2017-08-24 | 2018-07-17 | GM Global Technologies Operations LLC | Combustion engine airflow management systems and methods |
| CN110609538B (en) * | 2019-09-30 | 2021-04-16 | 潍柴动力股份有限公司 | Fault processing method, device, equipment and storage medium |
| CN111503260A (en) * | 2020-04-20 | 2020-08-07 | 盛瑞传动股份有限公司 | Method and device for regulating oil pressure of gearbox, electronic equipment and storage medium |
| CN112523864B (en) * | 2020-11-20 | 2022-04-05 | 浙江吉利控股集团有限公司 | Diagnosis method and device for engine crankshaft position sensor and storage medium |
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|---|---|---|---|---|
| US5937825A (en) * | 1997-10-09 | 1999-08-17 | Sanshin Kogyo Kabushiki Kaisha | Engine control system and method |
| JP2001173503A (en) * | 1999-12-15 | 2001-06-26 | Denso Corp | Trouble deciding device for diesel engine take throttle valve |
| CN1880746A (en) * | 2005-06-14 | 2006-12-20 | 丰田自动车株式会社 | Vehicle control apparatus and throttle trouble handling method |
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- 2008-07-14 CN CN 200810116645 patent/CN101629526B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5937825A (en) * | 1997-10-09 | 1999-08-17 | Sanshin Kogyo Kabushiki Kaisha | Engine control system and method |
| JP2001173503A (en) * | 1999-12-15 | 2001-06-26 | Denso Corp | Trouble deciding device for diesel engine take throttle valve |
| CN1880746A (en) * | 2005-06-14 | 2006-12-20 | 丰田自动车株式会社 | Vehicle control apparatus and throttle trouble handling method |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2001-159319A 2001.06.12 |
| JP特开平6-2574A 1994.01.11 |
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Owner name: CHINA VAGON (BEIJING) CARTRONICS HOLDING CO., LTD. Free format text: FORMER NAME: HUAXIA LONGHUI (BEIJING) AUTOMOBILE ELECTRONIC TECHNOLOGY CO., LTD. |
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Address after: 102206 No. 97, Changping Road, Shahe Town, Beijing, Changping District Patentee after: Huaxia Long Hui (Beijing) automotive electronic Polytron Technologies Inc Address before: 102206 8 building, No. 97, Changping Road, Shahe Town, Beijing, Changping District Patentee before: China Vagon (Beijing) Automobile Electronic Technology Co., Ltd. |
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Granted publication date: 20130424 Termination date: 20190714 |