CN107168277A - A kind of onboard diagnostic system limit turns round indicating fault method - Google Patents
A kind of onboard diagnostic system limit turns round indicating fault method Download PDFInfo
- Publication number
- CN107168277A CN107168277A CN201710220008.2A CN201710220008A CN107168277A CN 107168277 A CN107168277 A CN 107168277A CN 201710220008 A CN201710220008 A CN 201710220008A CN 107168277 A CN107168277 A CN 107168277A
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- China
- Prior art keywords
- fault
- failure
- ecu
- mil
- lamps
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
Abstract
A kind of onboard diagnostic system limit turns round indicating fault method, belong to automobile electrically-controlled technical field, the problem of whether limiting moment of torsion of being out of order can not be differentiated for existing instrument MIL indicator lamps by the present invention, existing hardware is relied on there is provided one kind, fault verification system implementation strategy need to only be changed and just can indicate that the method that limit turns round failure, driver is that may recognize that fault type according to the lighting mode of indicator lamp, distinguishing the failure that vehicle power deficiency is mechanical part on earth causes, or the failure that vehicle generates limit torsion causes, and improves the security for driving vehicle.
Description
Technical field
The invention belongs to automobile electrically-controlled technical field.
Background technology
In order to meet the requirement of Abgasgesetz, commercial vehicle engine all employ electronic control technology, and with OBD
(On-Board Diagnostic, abbreviation OBD) system.When event occurs in itself for any parts or OBD system related to discharge
During barrier, confirmed according to corresponding detection circulation, while quoting OBD DTCs, be connected to the malfunction indicator lamp of OBD system
(Malfunction Indicator Lamp, abbreviation MIL) is lighted, the generation for reminding driver's OBD failures.
OBD failures are divided into limit torsion OBD failures and not limited and turn round OBD failures from whether engine torque is limited to divide.Work as system
When report limit turns round OBD failures, MIL lamps are lighted, and according to laws and regulations requirement, maximum engine torque is limited；When system report
When not limiting torsion OBD failures, MIL lamps are only lighted, maximum engine torque is not limited.When OBD events occur for engine electric-controlled system
Barrier, MIL lamps only have the lighting form of Chang Liang a kind of so that driver can not judge whether lighting for the MIL lamps can cause vehicle
Torque limit.
The content of the invention
Cause driver can not judge whether OBD failures cause torque limit to solve current fault cues mode
Problem, indicating fault method is turned round the invention provides a kind of onboard diagnostic system limit.
The realization of this method rely primarily on electronic control unit (Electronic Control Unit, abbreviation ECU) and
MIL lamps.
ECU fault logics diagnostic system, timer and counter are included in described ECU；
Wherein ECU fault logics diagnostic system is used for the logistic diagnosis of failure；
Timer is used to control lighting and the fall time for trouble light；
Counter is used for the number of times for controlling MIL lamps to flash；
Be attached between ECU and MIL lamps by rigid line, ECU driven by way of high low side MIL lamps light and
Extinguish, i.e., MIL lamps do not work state when, power supply=5V, ground=5V；When MIL lamps are lighted, power supply=5V, ground=0V.
The ECU fault logics diagnostic system mainly includes failure monitoring module, fault processing module, fault determination module
And faulty modules.
Failure monitoring module, the various failures for monitoring vehicle and parts gather fault-signal；
Fault processing module, for being analyzed and processed to fault-signal；
Fault verification system, corresponding automatically controlled strategy is performed for the failure to generation：
1) when fault verification system judgement failure is limited torsion OBD failures, implementation strategy is as follows：
A, ECU control MIL lamp low sides are output as 0V, and the duration is t1；
B, ECU control MIL lamp low sides are output as 5V, and the duration is t2；
C, counter times add 1 time；
Whether d, the value for judging counter if less than n time, perform circulation a, b and c equal to n times, if number of times is equal to n,
Trouble light Chang Liang.
2) when fault verification system judges that failure turns round OBD failures as non-limit, implementation strategy is as follows：ECU control MIL lamps are low
End is output as 0V；
3) when fault verification system judges failure as fault-free, implementation strategy is as follows：ECU control MIL lamps low side outputs
For 5V.
Failed storage system, the stored record for fault message.
Beneficial effect：
By applying this method, whether user can confirm that Current vehicle in the state for limiting torsion, it is to avoid because MIL lamps are lighted
And produce the not enough illusion of vehicle power, it is possible to distinguishing the failure that vehicle power deficiency is mechanical part on earth causes, still
The failure that vehicle generates limit torsion causes, and improves the security for driving vehicle.
Brief description of the drawings
Fig. 1 ECU and instrument MIL lamps connected mode
Fig. 2 troubleshootings and instruction process；
Driver is according to the failure judgement types of MIL lamp lighting modes in Fig. 3 embodiments 1.
Embodiment
Embodiment 1
As shown in Fig. 2 realize the inventive method rely primarily on electronic control unit (Electronic Control Unit,
Abbreviation ECU) and MIL lamps.
ECU fault logics diagnostic system, timer and counter are included in described ECU；
Wherein ECU fault logics diagnostic system is used for the logistic diagnosis of failure；
Timer is used to control lighting and the fall time for trouble light；
Counter is used for the number of times for controlling MIL lamps to flash；
Be attached between ECU and MIL lamps by rigid line, ECU driven by way of high low side MIL lamps light and
Extinguish, i.e., MIL lamps do not work state when, power supply=5V, ground=5V；When MIL lamps are lighted, power supply=5V, ground=0V.
As shown in Fig. 2 the ECU fault logics diagnostic system mainly includes failure monitoring module, fault processing module, event
Hinder determination module and faulty modules.
Failure monitoring module, the various failures for monitoring vehicle and parts gather fault-signal；
Fault processing module, for being analyzed and processed to fault-signal；
Fault verification system, corresponding automatically controlled strategy is performed for the failure to generation：
1) when fault verification system judgement failure is limited torsion OBD failures, implementation strategy is as follows：
A, ECU control MIL lamp low sides are output as 0V, and the duration is t1；
B, ECU control MIL lamp low sides are output as 5V, and the duration is t2；
C, counter times add 1 time；
Whether d, the value for judging counter if less than n time, perform circulation a, b and c equal to n times, if number of times is equal to n,
Trouble light Chang Liang.
2) when fault verification system judges that failure turns round OBD failures as non-limit, implementation strategy is as follows：ECU control MIL lamps are low
End is output as 0V；
3) when fault verification system judges failure as fault-free, implementation strategy is as follows：ECU control MIL lamps low side outputs
For 5V.
Failed storage system, the stored record for fault message.
The inventive method can be made in the case where not producing change to other any parts only by changing ECU software
Fixed strategy can be achieved.By the lighting time of MIL lamps, ignition period and flicker the frequency be set to can scalar quantity, will light every time
Time t1 is designed as 1s (can demarcate), and the gap periods t2 lighted is set as into 0.5s (can demarcate), and the frequency n of flicker is set
For 20 times (can demarcate), after 20 times, MIL lamps Chang Liang.
As shown in figure 3, key is screwed to Start grades, after vehicle launch, if Current vehicle is without OBD failures, MIL lamps extinguish；
When OBD failures occur for vehicle and after confirmation, first confirm that with the presence or absence of limit torsion OBD failures in the OBD failures of generation, if
In the presence of MIL lamps start flicker, and often bright state is kept after flicker certain time；If it does not, MIL lamps keep Chang Liang, it is not present
The process of flicker.
By observe MIL lamps after vehicle launch light form it may determine that with the presence or absence of limit turn round OBD in OBD failures therefore
Barrier.The length of MIL lamp scintillation times can realize that specific guideline is by demarcating：It can either realize that prompting drives
The purpose of member, can not disperse the notice of driver, to ensure traffic safety again.
Claims (2)
1. a kind of onboard diagnostic system limit turns round indicating fault method, the realization of this method is mainly made up of ECU and MIL lamps；
ECU fault logics diagnostic system, timer and counter are included in described ECU；
Wherein ECU fault logics diagnostic system is used for the logistic diagnosis of failure；
Timer is used to control lighting and the fall time for trouble light；
Counter is used for the number of times for controlling MIL lamps to flash；
It is attached between ECU and MIL lamps by rigid line, ECU drives MIL lamps to light and put out by way of high low side
Go out, i.e., MIL lamps do not work state when, power supply=5V, ground=5V；When MIL lamps are lighted, power supply=5V, ground=0V；
The ECU fault logics diagnostic system mainly includes failure monitoring module, fault processing module, fault determination module and event
Hinder memory module；
Failure monitoring module, the various failures for monitoring vehicle and parts gather fault-signal；
Fault processing module, for being analyzed and processed to fault-signal；
Fault determination module, corresponding automatically controlled strategy is performed for the failure to generation：
Faulty modules, the stored record for fault message；
Characterized in that, as follows to the automatically controlled strategy performed by the failure of generation：
1) when fault verification system judgement failure is limited torsion OBD failures, implementation strategy is as follows：
A, ECU control MIL lamp low sides are output as 0V, and the duration is t1；
B, ECU control MIL lamp low sides are output as 5V, and the duration is t2；
C, counter times add 1 time；
Whether d, the value for judging counter if less than n time, perform circulation a, b and c, if number of times be equal to n, failure equal to n times
Lamp Chang Liang；
2) when fault verification system judges that failure turns round OBD failures as non-limit, implementation strategy is as follows：ECU control MIL lamp low sides are defeated
Go out for 0V；
3) when fault verification system judges failure as fault-free, implementation strategy is as follows：ECU control MIL lamp low sides are output as 5V.
2. onboard diagnostic system limit according to claim 1 turns round indicating fault method, it is characterised in that t1=1s；T2=
0.5s；N=20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710220008.2A CN107168277A (en) | 2017-04-06 | 2017-04-06 | A kind of onboard diagnostic system limit turns round indicating fault method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710220008.2A CN107168277A (en) | 2017-04-06 | 2017-04-06 | A kind of onboard diagnostic system limit turns round indicating fault method |
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| Publication Number | Publication Date |
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| CN107168277A true CN107168277A (en) | 2017-09-15 |
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ID=59849227
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| CN201710220008.2A Pending CN107168277A (en) | 2017-04-06 | 2017-04-06 | A kind of onboard diagnostic system limit turns round indicating fault method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748510A (en) * | 2017-09-25 | 2018-03-02 | 北京新能源汽车股份有限公司 | A kind of car fault diagnosis method, device and automobile |
| CN108407738A (en) * | 2018-02-12 | 2018-08-17 | 中国第汽车股份有限公司 | Commercial car trouble light combines the fault cues method lighted |
| CN111963287A (en) * | 2020-08-21 | 2020-11-20 | 中国重汽集团济南动力有限公司 | OBD interaction system, method and device for vehicle engine and post-processing |
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| US20080155970A1 (en) * | 2006-12-27 | 2008-07-03 | Detroit Diesel Corporation | Method for verifying the functionality of the components of a diesel particulate filter system |
| CN101585358A (en) * | 2009-06-30 | 2009-11-25 | 奇瑞汽车股份有限公司 | Control method of failure indicator of vehicle |
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| CN103527294A (en) * | 2013-10-16 | 2014-01-22 | 潍柴动力股份有限公司 | Postprocessing system control method, postprocessing electronic control unit and controller |
| CN106274531A (en) * | 2016-08-26 | 2017-01-04 | 北京长城华冠汽车科技股份有限公司 | Fault handling method and device |
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2017
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1999058826A1 (en) * | 1998-05-11 | 1999-11-18 | Engelhard Corporation | On-board exhaust gas purifying system with dynamic calorimetric sensor system |
| US20080155970A1 (en) * | 2006-12-27 | 2008-07-03 | Detroit Diesel Corporation | Method for verifying the functionality of the components of a diesel particulate filter system |
| CN101585358A (en) * | 2009-06-30 | 2009-11-25 | 奇瑞汽车股份有限公司 | Control method of failure indicator of vehicle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748510A (en) * | 2017-09-25 | 2018-03-02 | 北京新能源汽车股份有限公司 | A kind of car fault diagnosis method, device and automobile |
| CN108407738A (en) * | 2018-02-12 | 2018-08-17 | 中国第汽车股份有限公司 | Commercial car trouble light combines the fault cues method lighted |
| CN108407738B (en) * | 2018-02-12 | 2021-06-25 | 中国第一汽车股份有限公司 | Fault prompting method for combined lighting of fault lamps of commercial vehicle |
| CN111963287A (en) * | 2020-08-21 | 2020-11-20 | 中国重汽集团济南动力有限公司 | OBD interaction system, method and device for vehicle engine and post-processing |
| CN111963287B (en) * | 2020-08-21 | 2022-04-29 | 中国重汽集团济南动力有限公司 | OBD interaction system, method and device for vehicle engine and post-processing |
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Application publication date: 20170915 |