CN102011632A - Control circuit for monitoring automobile exhaust system and control method thereof - Google Patents
Control circuit for monitoring automobile exhaust system and control method thereof Download PDFInfo
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- CN102011632A CN102011632A CN2010105326343A CN201010532634A CN102011632A CN 102011632 A CN102011632 A CN 102011632A CN 2010105326343 A CN2010105326343 A CN 2010105326343A CN 201010532634 A CN201010532634 A CN 201010532634A CN 102011632 A CN102011632 A CN 102011632A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000012544 monitoring process Methods 0.000 title abstract description 4
- 238000012545 processing Methods 0.000 claims abstract description 5
- 230000006870 function Effects 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000003197 catalytic effect Effects 0.000 claims description 2
- 206010039203 Road traffic accident Diseases 0.000 abstract description 2
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000003745 diagnosis Methods 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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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- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention relates to a control circuit for monitoring an automobile exhaust system and a control method thereof, in particular to the following unit components of an oil supply system or an ignition system, an engine control unit (ECU), a temperature sensor, an instrument display alarm system, a diagnosis interface and a body controller BCM. The circuit can effectively monitor the temperature of the exhaust system, so that when the temperature rise is abnormal, the temperature acquired by the temperature sensor is compared with a preset temperature value of the engine control unit (ECU), three different processing modes, namely early warning, alarming and cut-off of a finished automobile power source, are selectively performed in turn according to a comparison result; therefore, peripheral components of a fore-cab exhaust system are not damaged due to over-temperature melting, and traffic accidents are also avoided.
Description
Technical field
The present invention relates to a kind of control circuit, especially relate to a kind of control circuit and controlling method thereof that is used to monitor automobile exhaust system.
Background technique
Along with the development of automotive engineering, the Security of automobile and reliability requirement are also in continuous raising.The vent systems of fuel-engined vehicle is most important for automobile.It is to the discharge quality and the environmental protection important influence of motor.Vent systems also is one of front deck thermal source simultaneously, is related to the performance and the quality of front deck miscellaneous part.Superheating phenomenon takes place in vent systems sometimes for various reasons, and the function, performance, life-span etc. of peripheral component are reduced greatly, under abominable situation even lost efficacy, because the incidents of spontaneous combustion that hyperthermia and superheating causes also often takes place.
Therefore be under the overall background of requirement in Security, the reliability with automobile now, the monitoring of exhaust system temperature become a kind of inevitable that the temperature rise of monitoring vent systems also helps the generation of the accident that prevents.
Summary of the invention
The present invention has designed a kind of control circuit and controlling method thereof that is used to monitor automobile exhaust system, its goal of the invention is to provide a kind of new control circuit to monitor the temperature rise of vent systems, thereby prevent owing to the overheated part component disabler that causes of engine exhaust system and the generation of fire accident, improve the safety and the reliability of car load.
In order to solve the technical problem of above-mentioned existence, the present invention has adopted following scheme:
A kind of control circuit that is used to monitor automobile exhaust system comprises an oil supply system or an ignition system (1); One or more temperature transducer (3), it is used to gather the Temperature numerical of automobile exhaust system; One control unit of engine ECU (2), its be used to receive Temperature numerical that described temperature transducer (3) adopts and with the temperature limit that pre-sets judgements of comparing, and when reaching a certain preset temperature limit value, make corresponding strategy processing; One instrument shows alarm system (4), and it is used to receive the warning sign that described control unit of engine ECU (2) sends, and directly reminds driver in the mode of the vision sense of hearing; And a car body controller BCM (6), it starts warning function after being used to receive the warning sign that described control unit of engine ECU (2) and/or described instrument show that alarm system (4) sends.
Further, also comprise diagnose interface (5), described control unit of engine ECU (2) reads the internal fault code by described diagnose interface (5) from diagnostic device, to determine whether proper functioning of temperature sampling parts or described temperature transducer (3).
Further, the mode of the information transmission between described temperature transducer (3) and the described control unit of engine ECU (2) is mutual constantly or down trigger.
Further, described temperature transducer (3) is arranged on the three-element catalytic of automobile front chamber.
Further, the mode of the information transmission between described control unit of engine ECU (2) and the described instrument warning display system (4) is mutual constantly or down trigger.
Further, the mode of the information transmission between described control unit of engine ECU (2) and the described car body controller BCM (6) is mutual constantly or down trigger.
A kind of controlling method that is used for control circuit may further comprise the steps:
At first, control unit of engine ECU (2) receives the temperature signal by described temperature transducer (3) sampling, and this temperature signal carried out and the comparison of the temperature limit that pre-sets, whether the temperature of judging vent systems is in the rational operating range, if temperature exceeding standard, but still in a certain controlled range the time, control unit of engine ECU (2) will make early warning by described instrument warning display system (4), so that the driver makes corresponding measure;
Secondly, when sample temperature reaches higher limit value, described control unit of engine ECU (2) will make the vent systems overtemperature alarm by described instrument warning display system (4), and trigger described car body controller BCM (6), described car body controller BCM (6) starts warning function, reminds driver vent systems excess temperature fault;
If vehicle still continues to travel at last, described control unit of engine ECU (2) will be in the time period of setting, according to driving states, take different strategies, finally cut off the car load power resources by force, guarantee that front deck vent systems periphery component do not cause damage of components because of the excess temperature fusing.
Further, described control unit of engine ECU (2) carries out self check to described temperature transducer (3) when car load starts, and confirms whether proper functioning of described temperature transducer (3).
This control circuit and controlling method thereof that is used to monitor automobile exhaust system has following beneficial effect:
(1) the present invention can effectively monitor the temperature of vent systems, thereby when temperaturing lifting abnormality takes place, temperature and control unit of engine ECU preset temperature value according to the temperature transducer collection compare, select to make three kinds of different processing modes such as early warning, warning and cut-out car load power resources successively, guarantee that front deck vent systems periphery component do not cause damage of components, the generation that yet avoids traffic accident because of the excess temperature fusing.
(2) the present invention is also owing to be provided with diagnose interface specially, control unit of engine ECU reads the internal fault code by diagnose interface from diagnostic device, to determine whether proper functioning of temperature sampling parts or temperature transducer, thereby help driving, maintenance man in time to fix a breakdown, the accident that prevents takes place.
Description of drawings
Fig. 1 is the block diagram that the present invention is used to monitor the control circuit of automobile exhaust system.
Description of reference numerals:
1-oil supply system or ignition system; 2-control unit of engine ECU; The 3-temperature transducer; The 4-instrument shows alarm system; The 5-diagnose interface; 6-car body controller BCM.
Embodiment
Below in conjunction with Fig. 1, the present invention will be further described:
As shown in Figure 1, this control circuit that is used to monitor automobile exhaust system mainly comprises with lower unit: oil supply system or ignition system 1, control unit of engine ECU2, temperature transducer 3, instrument show alarm system 4, diagnose interface 5 and car body controller BCM6.
Specifically, oil supply system or ignition system 1, this oil supply system or ignition system 1 are traditional approach and structure.
Control unit of engine ECU2, this control unit of engine ECU2 can accept temperature signal, can be to judgement of comparing of the temperature data of sampling and the temperature limit that pre-sets, when the sample temperature data show by instrument when limit value is set, and make corresponding logic judgement; Or work as temperature transducer 3 and send excess temperature triggering alarm signal, control unit of engine ECU2 collects this alarm signal, and control unit of engine ECU2 will make logic and judge.The result that logic is judged triggers car body controller BCM6 by the instrument acousto-optic hint, and the hydropac function, and opens associated alarm.Judge driving states simultaneously, make correct processing according to driver's operation intention.
This control unit of engine ECU2 can also read the internal fault code by diagnostic device, to determine whether proper functioning of temperature sampling parts; Control unit of engine ECU2 also has the self-recovery function, is provided with when requiring when the sample temperature data satisfy, and does not influence the proper functioning of motor.
Instrument warning display system 4 can be communicated by letter with control unit of engine ECU2, and multistage warning information is provided, and the prompting driver takes measures to abnormal conditions.Can carry out the signal transmission between instrument warning display system 4 and the car body controller BCM6.Obtain the alarm signal that control unit of engine ECU2 sends in order to ensure car body controller BCM6, instrument warning display system 4 also can send alarm signal to car body controller BCM6 after obtaining alarm signal.
Car body controller BCM6 when motor receives temperature rise above behind the signal of limit value, will trigger car body controller BCM6, and car body controller BCM6 starts warning function.
In addition, the information transmission of temperature transducer 3 and control unit of engine ECU2 can be mutual constantly when engine operation, also can be down trigger.Control unit of engine ECU2 and instrument warning display system 4, and the information interaction of car body controller BCM6 can be mutual constantly, also can be down trigger.
This control circuit working principle that is used to monitor automobile exhaust system is as follows:
1, control unit of engine ECU2 receives the temperature signal by temperature transducer 3 samplings, and to this temperature signal and the temperature limit comparison that pre-sets, whether the temperature of judging vent systems is in the rational operating range, if temperature exceeding standard, but still in a certain controlled range the time, control unit of engine ECU2 will make early warning by instrument warning display system 4, so that the driver makes corresponding measure;
2, when sample temperature reaches higher limit value, control unit of engine ECU2 will make the vent systems overtemperature alarm by instrument warning display system 4, and triggering car body controller BCM6, car body controller BCM6 starts warning function, reminds driver vent systems excess temperature fault.
3, exercise as continuing; control unit of engine ECU2 will be in the time period of setting; according to driving states; take different strategies; finally cut off the car load power resources by force, guarantee that front deck vent systems periphery component do not cause damage of components because of the excess temperature fusing, and the fire that causes therefrom; when having protected the vehicle performance life-span, also protected driver and passenger's safety.
The different power assemblies and the vent systems of vehicle need be demarcated temperature transducer 3 according to actual conditions, the multistage warning limiting parameter of control unit of engine ECU2.High-temperature resistant grade when this warning limiting parameter need be according to temperature field experiment and front deck periphery component circuit design is made calculating, calibrate vent systems rational temperature limit value, and constantly revise this temperature limit according to experiment test, draw the final temperature limit value.
Control unit of engine ECU2 carries out self check to this temperature transducer 3 when car load starts, confirm whether temperature transducer 3 work are normal.
In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obvious realization of the present invention is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present invention and technological scheme to carry out; or design of the present invention and technological scheme are directly applied to other occasion without improving, all in protection scope of the present invention.
Claims (8)
1. a control circuit that is used to monitor automobile exhaust system is characterized in that: comprise
One oil supply system or an ignition system (1);
One or more temperature transducer (3), it is used to gather the Temperature numerical of automobile exhaust system;
One control unit of engine ECU (2), its be used to receive Temperature numerical that described temperature transducer (3) gathers and with the temperature limit that pre-sets judgements of comparing, and when reaching a certain preset temperature limit value, make corresponding strategy processing;
One instrument shows alarm system (4), and it is used to receive the warning sign that described control unit of engine ECU (2) sends, and can directly remind driver in the mode of the vision sense of hearing;
And a car body controller BCM (6), it starts warning function after being used to receive the warning sign that described control unit of engine ECU (2) and/or described instrument show that alarm system (4) sends.
2. according to the described control circuit that is used to monitor automobile exhaust system of claim 1, it is characterized in that: also comprise diagnose interface (5), described control unit of engine ECU (2) reads the internal fault code by described diagnose interface (5) from diagnostic device, to determine whether proper functioning of temperature sampling parts or described temperature transducer (3).Temperature transducer can be by ECU or diagnostics port read-write.
3. according to the described control circuit that is used to monitor automobile exhaust system of claim 1, it is characterized in that: the mode of the information transmission between described temperature transducer (3) and the described control unit of engine ECU (2) is mutual constantly or down trigger.
4. according to claim 1, the 2 or 3 described control circuits that are used to monitor automobile exhaust system, it is characterized in that: described temperature transducer (3) is arranged on the three-element catalytic of automobile front chamber.
5. according to the described control circuit that is used to monitor automobile exhaust system of claim 4, it is characterized in that: the mode of the information transmission between described control unit of engine ECU (2) and the described instrument warning display system (4) is mutual constantly or down trigger.
6. according to any one described control circuit that is used to monitor automobile exhaust system of claim 1-5, it is characterized in that: the mode of the information transmission between described control unit of engine ECU (2) and the described car body controller BCM (6) is mutual constantly or down trigger.
7. controlling method that is used for any one described control circuit of claim 1 to 6 may further comprise the steps:
At first, described control unit of engine ECU (2) receives the temperature signal by described temperature transducer (3) sampling, and this temperature signal carried out and the comparison of the temperature limit that pre-sets, whether the temperature of judging vent systems is in the rational operating range, if temperature exceeding standard, but still in a certain controlled range the time, control unit of engine ECU (2) will make early warning by described instrument warning display system (4), so that the driver makes corresponding measure;
Secondly, when sample temperature reaches higher limit value, described control unit of engine ECU (2) will make the vent systems overtemperature alarm by described instrument warning display system (4), and trigger described car body controller BCM (6), described car body controller BCM (6) starts warning function, reminds driver vent systems excess temperature fault;
If vehicle still continues to travel at last, described control unit of engine ECU (2) will be in the time period of setting, according to driving states, take different strategies, finally cut off the car load power resources by force, guarantee that front deck vent systems periphery component do not cause damage of components because of the excess temperature fusing.
8. according to the described controlling method of claim 7, it is characterized in that: described control unit of engine ECU (2) is when car load starts, described temperature transducer (3) is carried out self check, confirm whether proper functioning of described temperature transducer (3), and whether sensor information and engine type mate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105326343A CN102011632A (en) | 2010-11-05 | 2010-11-05 | Control circuit for monitoring automobile exhaust system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105326343A CN102011632A (en) | 2010-11-05 | 2010-11-05 | Control circuit for monitoring automobile exhaust system and control method thereof |
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| CN102011632A true CN102011632A (en) | 2011-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105326343A Pending CN102011632A (en) | 2010-11-05 | 2010-11-05 | Control circuit for monitoring automobile exhaust system and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139208A (en) * | 2018-09-28 | 2019-01-04 | 潍柴动力股份有限公司 | A kind of temperature sensor patches abnormal detection method, a kind of engine and vehicle |
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| US20030154952A1 (en) * | 2002-02-20 | 2003-08-21 | Toyota Jidosha Kabushiki Kaisha | Operation method and operation control device of internal combustion engine for vehicle that temporarily stops engine |
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| CN100439665C (en) * | 2004-11-19 | 2008-12-03 | 三菱自动车工业株式会社 | Exhaust emission control device of internal combustion engine |
| CN201363181Y (en) * | 2008-08-30 | 2009-12-16 | 贵州黄帝车辆净化器有限公司 | Control system for exhaust particulate filter of diesel vehicle |
| CN101845983A (en) * | 2009-03-16 | 2010-09-29 | 通用汽车环球科技运作公司 | Diagnose on the car to the used temperature transducer of selective catalytic reduction system operating |
| CN101870278A (en) * | 2009-05-27 | 2010-10-27 | 中国汽车技术研究中心 | Method for forwarding two-way controller area network (CAN) bus data in central information integrated system |
-
2010
- 2010-11-05 CN CN2010105326343A patent/CN102011632A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030154952A1 (en) * | 2002-02-20 | 2003-08-21 | Toyota Jidosha Kabushiki Kaisha | Operation method and operation control device of internal combustion engine for vehicle that temporarily stops engine |
| CN1272530C (en) * | 2002-11-13 | 2006-08-30 | 三菱扶桑卡客车公司 | Exhaust controlling device for engine |
| CN100439665C (en) * | 2004-11-19 | 2008-12-03 | 三菱自动车工业株式会社 | Exhaust emission control device of internal combustion engine |
| CN201363181Y (en) * | 2008-08-30 | 2009-12-16 | 贵州黄帝车辆净化器有限公司 | Control system for exhaust particulate filter of diesel vehicle |
| CN101845983A (en) * | 2009-03-16 | 2010-09-29 | 通用汽车环球科技运作公司 | Diagnose on the car to the used temperature transducer of selective catalytic reduction system operating |
| CN101870278A (en) * | 2009-05-27 | 2010-10-27 | 中国汽车技术研究中心 | Method for forwarding two-way controller area network (CAN) bus data in central information integrated system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109139208A (en) * | 2018-09-28 | 2019-01-04 | 潍柴动力股份有限公司 | A kind of temperature sensor patches abnormal detection method, a kind of engine and vehicle |
| CN109139208B (en) * | 2018-09-28 | 2020-06-02 | 潍柴动力股份有限公司 | Detection method for abnormal plugging of temperature sensor, engine and vehicle |
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Application publication date: 20110413 |