CN103758619A - Automobile exhaust forcible maintenance method and device for implementing same - Google Patents
Automobile exhaust forcible maintenance method and device for implementing same Download PDFInfo
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- CN103758619A CN103758619A CN201410028943.5A CN201410028943A CN103758619A CN 103758619 A CN103758619 A CN 103758619A CN 201410028943 A CN201410028943 A CN 201410028943A CN 103758619 A CN103758619 A CN 103758619A
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- ternary catalyzing
- temperature
- catalyzing unit
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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
Abstract
The invention relates to an automobile exhaust forcible maintenance method and a device for implementing the automobile exhaust forcible maintenance method. The automobile exhaust forcible maintenance method comprises the steps that the oxygen content or temperature of exhaust of the front end and the oxygen content or temperature of exhaust of the rear end of a three-way catalyst in a normal work state are detected and compared, whether the efficiency of the three-way catalyst is lowered or the three-way catalyst is out of operation is judged, and when the efficiency of the three-way catalyst is lowered or the three-way catalyst is out of operation, a limit command is send out to an engine electronic control unit, an automobile cannot run normally, and a driver is urged to timely replace or maintain the three-way catalyst. An automobile exhaust forcible maintenance device used in the method is simple in structure, convenient to mount and modify, beneficial to popularization in a large range and beneficial to enhancing environmental protection work, and automobile exhaust pollution is reduced.
Description
Technical field
The present invention relates to the device that a kind of vehicle exhaust is forced repair method and implemented the method.
Background technique
Along with the further growth of automobile pollution, the pollutant of motor vehicle emission increases sharply, and forces the discharge that improves automobile harmful gas to arrive instant stage.At present, the removal of automobile harmful gas mainly adopts the method for three-element catalytic, triple mode catalytic converter is by a metal shell, and a net bottom frame and a catalytic layer composition, can remove 90% of hydrocarbon, carbon monoxide and three kinds of major pollutants matter of oxynitrides.When the air fuel ratio of motor approaches or reaches ideal value, triple mode catalytic converter even can be removed three kinds of harmful gases completely.Although triple mode catalytic converter can be removed 90% of three kinds of major pollutants matter, it still has narrow limitation.Triple mode catalytic converter is element after all, if safeguarded not in time, it must be aging, Efficiency Decreasing or inefficacy.But the Efficiency Decreasing of triple mode catalytic converter or lost efficacy and do not affect the overall performance of vehicle, does not therefore just cause the attention that person for driving a car is enough yet, how can let matters drift and it.Add at present relevant policy, rules lag behind, and carry out and get up leakyly, personal factor can not be avoided.Therefore, forcibly triple mode catalytic converter is carried out periodic maintenance or changes just seeming particularly important.Chinese patent 2013202539313 " automobile exhaust system Efficiency Decreasing or failure alarm device " provides a kind of and has detected the whether device of Efficiency Decreasing or inefficacy of ternary catalyzing unit by exhaust pressure, in the time of ternary catalyzing unit Efficiency Decreasing or inefficacy obstruction, exhaust resistance increases, outlet pipe internal pressure improves, Crush trigger formula sensor, sends acoustooptic alarm.Although this device can make accurate judgment to the serious ternary catalyzing unit stopping up of a part, in actual use, do not stop up when most of ternary catalyzing unit Efficiency Decreasings or inefficacy, this device cannot judge this; In addition, this device is only to provide acoustooptic alarm after judging ternary catalyzing unit Efficiency Decreasing or inefficacy, there is no compulsory measure, cannot reach the object of forcing environmental protection.
Summary of the invention
The vehicle exhaust pressure repair method of ternary catalyzing unit and the device of enforcement the method that provide a kind of involuntary conversion, maintenance efficiency to reduce or lost efficacy are provided for reducing automobile exhaust pollution.
For achieving the above object, the present invention adopts following technological scheme:
Vehicle exhaust of the present invention is forced repair method, comprises the following steps of carrying out successively:
Steps A), the temperature of detection motor or ternary catalyzing unit, if temperature, lower than normal working temperature, is sent normal work order to engine electronic control unit; If temperature reaches or higher than normal working temperature, enter step B);
Step B), detect respectively oxygen content or the temperature value of the tail gas of ternary catalyzing unit front and back ends, calculate the poor of two numerical value, obtain the whether judgement of Efficiency Decreasing or inefficacy of ternary catalyzing unit, if ternary catalyzing unit is Efficiency Decreasing or inefficacy not, to engine electronic control unit, send normal work order, otherwise enter step C);
Step C), to engine electronic control unit, send restriction instruction, described restriction instruction comprises one or more of in following instruction; Restricted speed; Delayed extinction; Send acoustooptic alarm.
Implementing above-mentioned vehicle exhaust forces the device of repair method to comprise engine exhaust pipe, be connected on the ternary catalyzing unit on engine exhaust pipe, the front end of described ternary catalyzing unit is provided with preposition sensor, the rear end of ternary catalyzing unit is provided with rearmounted sensor, described preposition sensor and rearmounted sensor are wired to respectively the input end of sensor signal processing circuit, the output terminal of described sensor signal processing circuit is connected to engine electronic control unit by ON-OFF control circuit, the control end of described ON-OFF control circuit is connected to the output terminal of processes temperature signal circuit, the input end of described processes temperature signal circuit is connected to operating temperature sensor.
The method simple possible, can force the ternary catalyzing unit that driver is changed in time and maintenance efficiency reduces or lost efficacy, and avoids ternary catalyzing unit to go to work braving one's illness and causes serious tail gas pollution; Simultaneously, this vehicle exhaust forces apparatus for examination and repair simple in structure, it is convenient to install, reequip, by being arranged on the numerical value change of the tail gas that two sensors of ternary catalyzing unit front and back ends detect, accurately judge whether Efficiency Decreasing or inefficacy of ternary catalyzing unit, and the instruction of sending parking or restricted speed in the situation that of ternary catalyzing unit Efficiency Decreasing or inefficacy to engine electronic control unit, force driver to be changed in time and maintenance ternary catalyzing unit, reach the object of forcing environmental protection.
Accompanying drawing explanation
Fig. 1 is the structural representation that described vehicle exhaust is forced apparatus for examination and repair.
Embodiment
Vehicle exhaust of the present invention is forced repair method, it is characterized in that comprising the following steps of carrying out successively:
Steps A), detect the temperature of motor or ternary catalyzing unit, if temperature lower than normal working temperature, illustrates that motor is in cold start, without judging whether Efficiency Decreasing or inefficacy of ternary catalyzing unit, to engine electronic control unit 10, send normal work order; If temperature reaches or higher than normal working temperature, illustrate that ternary catalyzing unit has reached the temperature of normal work, enters step B);
Step B), detect respectively oxygen content or the temperature value of the tail gas of ternary catalyzing unit front and back ends, calculate the poor of two numerical value, obtain the whether judgement of Efficiency Decreasing or inefficacy of ternary catalyzing unit.While transforming carbon monoxide and hydrocarbon due to the triple mode catalytic converter of normal operation, to consume oxygen, so triple mode catalytic converter not Efficiency Decreasing or lost efficacy time its rear end oxygen concentration lower, when ternary catalyzing unit decrease in efficiency or inefficacy, the oxygen concentration value of its front and back ends is very approaching, can judge whether Efficiency Decreasing or inefficacy of ternary catalyzing unit by detecting the oxygen concentration content of tail gas of ternary catalyzing unit front and back ends accordingly; In addition, when the ternary catalyzing unit of Efficiency Decreasing or inefficacy is not normally worked, because the oxidation reaction of carrying out in catalyst converter can produce a large amount of heat, so the temperature of catalyst converter rear end is certainly higher than the temperature of catalyst converter front end, according to the temperature difference of front and back, also can judge whether Efficiency Decreasing or inefficacy of ternary catalyzing unit.If ternary catalyzing unit is Efficiency Decreasing or inefficacy not, to engine electronic control unit 10, send normal work order, otherwise enter step C);
Step C), to engine electronic control unit 10, send restriction instruction, described restriction instruction comprises one or more of in following instruction; Restricted speed; Delayed extinction; Send acoustooptic alarm.Any one of these instructions can make vehicle normally travel, thereby supervises driver to change in time or maintenance ternary catalyzing unit.
As shown in Figure 1, described vehicle exhaust forces apparatus for examination and repair to comprise engine exhaust pipe 1, be connected on the ternary catalyzing unit 2 on engine exhaust pipe 1, the front end of described ternary catalyzing unit 2 is provided with preposition sensor 3, the rear end of ternary catalyzing unit 2 is provided with rearmounted sensor 4, described preposition sensor 3 and rearmounted sensor 4 are all lambda sensor or temperature transducer, by detecting that oxygen content in the tail gas of ternary catalyzing unit 2 front and back ends changes or the temperature inversion of tail gas can judge whether Efficiency Decreasing or inefficacy of ternary catalyzing unit.
Described preposition sensor 3 and rearmounted sensor 4 are wired to respectively the input end of sensor signal processing circuit 5, the output terminal of described sensor signal processing circuit 5 is connected to engine electronic control unit 10 by ON-OFF control circuit 6, the control end of described ON-OFF control circuit 6 is connected to the output terminal of processes temperature signal circuit 7, and the input end of described processes temperature signal circuit 7 is connected to operating temperature sensor 8.Above-mentioned ON-OFF control circuit 6 is relay or electronic switching circuit.Above-mentioned operating temperature sensor 8 can be arranged in engine water tank and detect water tank temperature, also can be arranged on the stage casing of ternary catalyzing unit 2, for detection of the operating temperature of ternary catalyzing unit 2.When operating temperature sensor 8 detected temperatures reach normal working temperature, processes temperature signal circuit 7 is exported control signal and is made ON-OFF control circuit 6 conductings, the sensor signal that sensor signal processing circuit 5 is exported is sent to engine electronic control unit 10, can avoid like this after starting a cold engine failing due to the lower ternary catalyzing unit 2 of temperature the erroneous judgement that normal work causes.After engine electronic control unit 10 receives the signal of ternary catalyzing unit Efficiency Decreasing or inefficacy, can or delay locked motor of a period of time by the default program limit speed of a motor vehicle, reach the object of involuntary conversion ternary catalyzing unit.
Claims (2)
1. vehicle exhaust is forced repair method, it is characterized in that comprising the following steps of carrying out successively:
Steps A), the temperature of detection motor or ternary catalyzing unit, if temperature, lower than normal working temperature, is sent normal work order to engine electronic control unit (10); If temperature reaches or higher than normal working temperature, enter step B);
Step B), detect respectively oxygen content or the temperature value of the tail gas of ternary catalyzing unit front and back ends, calculate the poor of two numerical value, obtain the whether judgement of Efficiency Decreasing or inefficacy of ternary catalyzing unit, if ternary catalyzing unit is Efficiency Decreasing or inefficacy not, to engine electronic control unit (10), send normal work order, otherwise enter step C);
Step C), to engine electronic control unit (10), send restriction instruction, described restriction instruction comprises one or more of in following instruction; Restricted speed; Delayed extinction; Send acoustooptic alarm.
2. implement the device of vehicle exhaust pressure repair method as claimed in claim 1, it is characterized in that: comprise engine exhaust pipe (1), be connected on the ternary catalyzing unit (2) on engine exhaust pipe (1), the front end of described ternary catalyzing unit (2) is provided with preposition sensor (3), the rear end of ternary catalyzing unit (2) is provided with rearmounted sensor (4), described preposition sensor (3) and rearmounted sensor (4) are wired to respectively the input end of sensor signal processing circuit (5), the output terminal of described sensor signal processing circuit (5) is connected to engine electronic control unit (10) by ON-OFF control circuit (6), the control end of described ON-OFF control circuit (6) is connected to the output terminal of processes temperature signal circuit (7), the input end of described processes temperature signal circuit (7) is connected to operating temperature sensor (8).
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| CN201410028943.5A CN103758619A (en) | 2014-01-22 | 2014-01-22 | Automobile exhaust forcible maintenance method and device for implementing same |
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| CN201410028943.5A CN103758619A (en) | 2014-01-22 | 2014-01-22 | Automobile exhaust forcible maintenance method and device for implementing same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645762A (en) * | 2022-05-23 | 2022-06-21 | 山东新凌志检测技术有限公司 | Motor vehicle tail gas purification monitoring system and method |
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|---|---|---|---|---|
| US6116021A (en) * | 1997-02-26 | 2000-09-12 | Motorola, Inc. | Method for monitoring the performance of a catalytic converter using a rate modifier |
| US20070062177A1 (en) * | 2004-01-06 | 2007-03-22 | Toyota Jidosha Kabushiki Kaisha | Apparatus for evaluating deterioration condition of catalyst of internal combustion engine |
| CN101639010A (en) * | 2008-07-28 | 2010-02-03 | 杨应捷 | Internal combustion engine on-board control system |
| CN102322324A (en) * | 2011-07-27 | 2012-01-18 | 长安大学 | Vehicle-mounted monitoring system and method for three-way catalytic converter for vehicle |
| CN102374001A (en) * | 2010-08-06 | 2012-03-14 | 阿尔特(中国)汽车技术有限公司 | Ageing failure diagnosis method of engine catalytic converter |
-
2014
- 2014-01-22 CN CN201410028943.5A patent/CN103758619A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6116021A (en) * | 1997-02-26 | 2000-09-12 | Motorola, Inc. | Method for monitoring the performance of a catalytic converter using a rate modifier |
| US20070062177A1 (en) * | 2004-01-06 | 2007-03-22 | Toyota Jidosha Kabushiki Kaisha | Apparatus for evaluating deterioration condition of catalyst of internal combustion engine |
| CN101639010A (en) * | 2008-07-28 | 2010-02-03 | 杨应捷 | Internal combustion engine on-board control system |
| CN102374001A (en) * | 2010-08-06 | 2012-03-14 | 阿尔特(中国)汽车技术有限公司 | Ageing failure diagnosis method of engine catalytic converter |
| CN102322324A (en) * | 2011-07-27 | 2012-01-18 | 长安大学 | Vehicle-mounted monitoring system and method for three-way catalytic converter for vehicle |
Non-Patent Citations (3)
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| 张旭升 等: "基于OBD的三效催化转化器失效的诊断研究", 《汽车电器》 * |
| 彭小红 等: "三元催化转化器车载诊断方法研究", 《农业装备与车辆工程》 * |
| 武汇理: "三效催化转化器的故障诊断方法", 《汽车维护与修理》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645762A (en) * | 2022-05-23 | 2022-06-21 | 山东新凌志检测技术有限公司 | Motor vehicle tail gas purification monitoring system and method |
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Application publication date: 20140430 |