CN102817683B - Tail gas purification device of combustion engine - Google Patents
Tail gas purification device of combustion engine Download PDFInfo
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- CN102817683B CN102817683B CN201210322253.1A CN201210322253A CN102817683B CN 102817683 B CN102817683 B CN 102817683B CN 201210322253 A CN201210322253 A CN 201210322253A CN 102817683 B CN102817683 B CN 102817683B
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- unit
- outlet pipe
- triple
- effect catalytic
- combustion engine
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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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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- Exhaust Gas After Treatment (AREA)
Abstract
The invention provides a kind of tail gas purification device of combustion engine, belong to car combustion engine field.Wherein, this tail gas purification device of combustion engine comprises: waste pipe; The triple-effect catalytic unit be connected with described outlet pipe; Be arranged on the air admission unit communicated between described outlet pipe and described triple-effect catalytic unit, with described outlet pipe; Be arranged on the igniting unit of described outlet pipe and described air admission unit joint; The sensing unit be connected respectively with described triple-effect catalytic unit, outlet pipe and suction tude; Be connected respectively with described igniting unit, air admission unit and sensing unit, for controlling the air inlet amount of described air admission unit and the control unit of described igniting unit according to the parameter sensing of described sensing unit.Embodiments provide a kind of tail gas purification device of combustion engine improving the triple-effect catalytic unit efficiency of heating surface.
Description
Technical field
The present invention relates to car combustion engine field, refer to a kind of tail gas purification device of combustion engine especially.
Background technique
In prior art, triple-effect catalytic unit adopts electrical heating preheater, utilizes electric energy when engine cold-start, preheating triple-effect catalytic unit.
During electrical heating preheater heating, temperature raises meeting generation time hysteresis quality, and like this when engine cold-start, because three-effect catalysis actuator temperature does not reach operating temperature, the catalytic efficiency of triple-effect catalytic unit reduces, and will discharge a large amount of noxious pollutant.Most of HC and CO in tail gas discharges in this engine warm-up process.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of tail gas purification device of combustion engine improving the triple-effect catalytic unit efficiency of heating surface.
For solving the problems of the technologies described above, embodiments of the invention provide technological scheme as follows:
On the one hand, a kind of tail gas purification device of combustion engine is provided, comprises:
Waste pipe;
The triple-effect catalytic unit be connected with described outlet pipe;
Be arranged on the air admission unit communicated between described outlet pipe and described triple-effect catalytic unit, with described outlet pipe;
Be arranged on the igniting unit of described outlet pipe and described air admission unit joint;
The sensing unit be connected respectively with described triple-effect catalytic unit, outlet pipe and suction tude;
Be connected respectively with described igniting unit, air admission unit and sensing unit, for controlling the air inlet amount of described air admission unit and the control unit of described igniting unit according to the parameter sensing of described sensing unit.
Further, described tail gas purification device of combustion engine also comprises:
The power supply unit be connected with described triple-effect catalytic unit;
Further, described power supply unit comprises:
The storage battery be connected with described triple-effect catalytic unit; And
Be arranged on the supercharging coil between described triple-effect catalytic unit and described storage battery.
Further, described air admission unit comprises:
Be arranged on the suction tude communicated between described outlet pipe and described triple-effect catalytic unit, with described outlet pipe;
Be successively set on the one way stop peturn valve in described suction tude and closure.
Further, described air admission unit also comprises:
Be arranged on the air-strainer of described suction tude end, described closure is between described one way stop peturn valve and described air-strainer.
Further, described igniting unit comprises the spark plug being arranged on described outlet pipe and described suction tude joint.
Further, described sensing unit comprises:
Be arranged on the carrier of described triple-effect catalytic unit, for measuring the temperature transducer of temperature in triple-effect catalytic unit;
Be arranged in described outlet pipe, for measuring the oxygen concentration sensor of oxygen concentration in outlet pipe;
Be arranged on described closure, for measuring the throttle position sensor of throttle position.
Further, described control unit comprises:
For the parameter sensing according to described temperature transducer and oxygen concentration sensor, the first control module controlling the aperture of described closure;
For the parameter sensing according to described temperature transducer, the second control module controlling described plug ignition.
Embodiments of the invention have following beneficial effect:
In such scheme, when engine cold-start, air is introduced to outlet pipe from air admission unit, tail gas imperfect combustion in a large number in outlet pipe is mixed with secondary air, form mixed gas, then lighted a fire by igniting unit, mixed gas is caught fire before triple-effect catalytic unit, impel triple-effect catalytic unit to reach operating temperature at short notice, thus reduce the discharge of noxious pollutant; And technological scheme temperature increase rate of the present invention is fast, need not consume a large amount of electric energy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the tail gas purification device of combustion engine of the embodiment of the present invention.
Reference character
1-outlet pipe
2-spark plug
3-temperature transducer
4-triple-effect catalytic unit
5-oxygen concentration sensor
6-one way stop peturn valve
7-closure and throttle position sensor
8-air intake duct
9-air-strainer
10-gas exhaust manifold
11-storage battery
12-control unit
13-supercharging coil
Embodiment
For embodiments of the invention will be solved technical problem, technological scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
When embodiments of the invention heat for electrical heating preheater in prior art, temperature raises meeting generation time hysteresis quality, like this when engine cold-start, because three-effect catalysis actuator temperature does not reach operating temperature, the catalytic efficiency of triple-effect catalytic unit reduces, by discharging the problem of a large amount of noxious pollutant, provide a kind of tail gas purification device of combustion engine improving the triple-effect catalytic unit efficiency of heating surface.
Embodiments provide a kind of tail gas purification device of combustion engine, comprising:
Waste pipe;
The triple-effect catalytic unit be connected with outlet pipe;
Be arranged on the air admission unit communicated between outlet pipe and triple-effect catalytic unit, with outlet pipe;
Be arranged on the igniting unit of outlet pipe and air admission unit joint;
The sensing unit be connected respectively with triple-effect catalytic unit, outlet pipe and suction tude;
Be connected respectively with igniting unit, air admission unit and sensing unit, for controlling the air inlet amount of air admission unit and the control unit of igniting unit according to the parameter sensing of sensing unit.
Further, tail gas purification device of combustion engine also comprises:
The power supply unit be connected with triple-effect catalytic unit;
Further, power supply unit comprises:
The storage battery be connected with triple-effect catalytic unit; And
Be arranged on the supercharging coil between triple-effect catalytic unit and storage battery.
Further, air admission unit comprises:
Be arranged on the suction tude communicated between outlet pipe and triple-effect catalytic unit, with outlet pipe;
Be successively set on the one way stop peturn valve in suction tude and closure.
Further, air admission unit also comprises:
Be arranged on the air-strainer of suction tude end, closure is between one way stop peturn valve and air-strainer.
Further, igniting unit comprises the spark plug being arranged on outlet pipe and suction tude joint.
Further, sensing unit comprises:
Be arranged on the carrier of triple-effect catalytic unit, for measuring the temperature transducer of temperature in triple-effect catalytic unit;
Be arranged in outlet pipe, for measuring the oxygen concentration sensor of oxygen concentration in outlet pipe;
Be arranged on closure, for measuring the throttle position sensor of throttle position.
Further, control unit comprises:
For the parameter sensing according to temperature transducer and oxygen concentration sensor, the first control module controlling the aperture of closure;
For the parameter sensing according to temperature transducer, the second control module controlling plug ignition.
In the embodiment of the present invention, when engine cold-start, air is introduced to outlet pipe from air admission unit, tail gas imperfect combustion in a large number in outlet pipe is mixed with secondary air, form mixed gas, then lighted a fire by igniting unit, mixed gas is caught fire before triple-effect catalytic unit, impel triple-effect catalytic unit to reach operating temperature at short notice, thus reduce the discharge of noxious pollutant; And technological scheme temperature increase rate of the present invention is fast, need not consume a large amount of electric energy.
Below in conjunction with Fig. 1, tail gas purification device of combustion engine of the present invention and workflow thereof are introduced further:
As shown in Figure 1, waste pipe 1 is provided with gas exhaust manifold 10, and what be connected with outlet pipe 1 also has triple-effect catalytic unit 4, is provided with air intake duct 8 before triple-effect catalytic unit 4, suction tude 8 is provided with closure 7, and closure 7 can control the air inlet amount of suction tude 8.Further, suction tude 8 is also provided with one way stop peturn valve 6, after one way stop peturn valve 6 can prevent outlet pipe 1 internal pressure from increasing, the tail gas that outlet pipe 1 is discharged passes back into air intake duct 8.Preferably, at suction tude 8 tip designs air-strainer 9, prevent the dust in air from entering outlet pipe 1, blocking triple-effect catalytic unit 4.
Wherein, design spark plug 2 at suction tude 8 and rear, outlet pipe 1 joint, when mixture temperature is too low cannot be oxidized time, spark plug 2 can be adopted to light a fire, mixed gas is burnt triple-effect catalytic unit 4 is anterior.
The carrier of triple-effect catalytic unit 4 is designed with temperature transducer 3, in order to measure the operating temperature of triple-effect catalytic unit 4.Oxygen concentration sensor 5 is designed with, for measuring the oxygen concentration in outlet pipe 1 at triple-effect catalytic unit 4 rear.Closure 7 is designed with throttle position sensor, for measuring the position of closure 7.Control unit 12 is connected with temperature transducer 3, oxygen concentration sensor 5, spark plug 2 and throttle position sensor.
Tail gas purification device of combustion engine of the present invention for triple-effect catalytic unit 4 provides electric energy, is also provided with supercharging coil 13 by storage battery 11 between storage battery 11 and triple-effect catalytic unit 4, can improve the voltage that storage battery 11 provides.
When engine cold-start, control unit 12 controls the aperture of closure 7, regulate air inlet amount, air enters outlet pipe 1 from suction tude 8, carry out being mixed to form mixed gas with the tail gas in outlet pipe 1, when control unit 12 is judged that mixture temperature is too low cannot be oxidized by the parameter that temperature transducer 3 and oxygen concentration sensor 5 transmit, control spark plug 2 to light a fire, make mixed gas in the burning of triple-effect catalytic unit 4 front portion, triple-effect catalytic unit 4 is made to reach operating temperature within the short time (such as a few second), improve the efficiency of heating surface of triple-effect catalytic unit, decrease the discharge of noxious pollutant, and save a large amount of electric energy.
Control unit 12 can adjust the aperture of closure 7 at any time according to the parameter that temperature transducer 3 and oxygen concentration sensor 5 transmit, and then control air intake, control the speed of cold start-up tail gas when the burning of triple-effect catalytic unit 4 front portion, flameholding is carried out, stops when temperature reaches specified value after-combustion.Technological scheme of the present invention adjusts according to engine operating condition, and motor exhaust is farthest purified.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a tail gas purification device of combustion engine, is characterized in that, comprising:
Waste pipe;
The triple-effect catalytic unit be connected with described outlet pipe;
Be arranged on the air admission unit communicated between described outlet pipe and described triple-effect catalytic unit, with described outlet pipe;
Be arranged on the igniting unit of described outlet pipe and described air admission unit joint;
The sensing unit be connected respectively with described triple-effect catalytic unit, outlet pipe and suction tude;
Be connected respectively with described igniting unit, air admission unit and sensing unit, for controlling the air inlet amount of described air admission unit and the control unit of described igniting unit according to the parameter sensing of described sensing unit;
Wherein, described sensing unit comprises: be arranged on the carrier of described triple-effect catalytic unit, for measuring the temperature transducer of temperature in triple-effect catalytic unit;
Be arranged in described outlet pipe, for measuring the oxygen concentration sensor of oxygen concentration in outlet pipe;
Be arranged on the closure in described suction tude, for measuring the throttle position sensor of throttle position;
Described control unit comprises:
For the parameter sensing according to described temperature transducer and oxygen concentration sensor, the first control module controlling the aperture of described closure;
For the parameter sensing according to described temperature transducer, control the second control module being arranged on the plug ignition of described outlet pipe and described suction tude joint.
2. tail gas purification device of combustion engine according to claim 1, is characterized in that, described tail gas purification device of combustion engine also comprises:
The power supply unit be connected with described triple-effect catalytic unit.
3. tail gas purification device of combustion engine according to claim 2, is characterized in that, described power supply unit comprises:
The storage battery be connected with described triple-effect catalytic unit; And
Be arranged on the supercharging coil between described triple-effect catalytic unit and described storage battery.
4. the tail gas purification device of combustion engine according to Claims 2 or 3, is characterized in that, described air admission unit comprises:
Be arranged on the suction tude communicated between described outlet pipe and described triple-effect catalytic unit, with described outlet pipe;
Be successively set on the one way stop peturn valve in described suction tude and closure.
5. tail gas purification device of combustion engine according to claim 4, is characterized in that, described air admission unit also comprises:
Be arranged on the air-strainer of described suction tude end, described closure is between described one way stop peturn valve and described air-strainer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210322253.1A CN102817683B (en) | 2012-09-03 | 2012-09-03 | Tail gas purification device of combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210322253.1A CN102817683B (en) | 2012-09-03 | 2012-09-03 | Tail gas purification device of combustion engine |
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| Publication Number | Publication Date |
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| CN102817683A CN102817683A (en) | 2012-12-12 |
| CN102817683B true CN102817683B (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210322253.1A Active CN102817683B (en) | 2012-09-03 | 2012-09-03 | Tail gas purification device of combustion engine |
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| CN (1) | CN102817683B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107620641B (en) * | 2016-07-15 | 2022-04-01 | 日立安斯泰莫株式会社 | ECU for motor vehicle engine |
| CN112228189B (en) * | 2020-10-12 | 2021-12-21 | 潍柴动力股份有限公司 | Exhaust gas heat management coupling method and exhaust gas treatment system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5425233A (en) * | 1991-06-12 | 1995-06-20 | Ford Motor Company | Operation of an internal combustion engine |
| GB2261613A (en) * | 1991-11-22 | 1993-05-26 | Ford Motor Co | Operation of an internal combustion engine |
| US5459998A (en) * | 1992-03-11 | 1995-10-24 | Mitsubishi Denki Kabushiki Kaisha | Apparatus for introducing fresh air into exhaust pipe of internal combustion engine for purification of exhaust gas |
| DE102007056217A1 (en) * | 2007-11-22 | 2009-05-28 | Robert Bosch Gmbh | Method and control unit for heating a catalytic converter in the exhaust system of a supercharged internal combustion engine |
| CN101429885A (en) * | 2008-12-11 | 2009-05-13 | 洛阳北方易初摩托车有限公司 | Heating type exhausting silencer of motorcycle |
| CN202300590U (en) * | 2011-10-26 | 2012-07-04 | 浙江吉利汽车研究院有限公司 | Secondary air injection tail gas purification device |
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Owner name: BEIJING AUTOMOBILE RESEARCH GENERAL INSTITUTE CO., Free format text: FORMER OWNER: BAIC MOTOR CO., LTD. Effective date: 20131212 |
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Free format text: CORRECT: ADDRESS; FROM: 100021 CHAOYANG, BEIJING TO: 101300 SHUNYI, BEIJING |
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Effective date of registration: 20131212 Address after: 101300 Beijing, Shunyi District Shun Road, No. 25, room 5, 106 Applicant after: Beijing Automobile Research General Institute Co., Ltd. Address before: 100021 Chaoyang District, Warwick, Beijing, No. 10, Peng Long Building Applicant before: Beijing Automibile Co.,Ltd. |
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