CN104775875A - Motor vehicle exhaust purification catalyst heating system - Google Patents
Motor vehicle exhaust purification catalyst heating system Download PDFInfo
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- CN104775875A CN104775875A CN201510027636.XA CN201510027636A CN104775875A CN 104775875 A CN104775875 A CN 104775875A CN 201510027636 A CN201510027636 A CN 201510027636A CN 104775875 A CN104775875 A CN 104775875A
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- heating
- emission control
- exhaust emission
- electronic monitoring
- catalyst carrier
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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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- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a motor vehicle exhaust purification catalyst heating system. The system comprises an engine, an engine exhaust pipe, an exhaust purification catalyst carrier arranged in the engine exhaust pipe, an exhaust purification catalyst arranged in the exhaust purification catalyst carrier, a temperature sensor arranged in the exhaust purification catalyst, a heating device, a heating controller and an electronic monitoring system, wherein the electronic monitoring system comprises a switch unit, a comparison unit, a setting unit and a control unit; when the control unit obtains a signal that the engine is started and is to be started and the temperature of the exhaust purification catalyst is smaller than a set value of the setting unit, the heating controller is started and the exhaust purification catalyst is heated through the heating device; when the control unit obtains a signal that the engine is stopped or the temperature of the exhaust purification catalyst is greater than the set value of the setting unit, the heating controller is turned off by the control unit. According to the system, the temperature of the exhaust purification catalyst of a motor vehicle can be quickly and efficiently raised, and the exhaust purification catalyst is quickly activated.
Description
Technical field
The present invention relates to a kind of purifying vehicle exhaust gas catalyzer heating system.
Background technique
Be that the Motor Vehicle of driving force is in engine working process with fuel, because of the burn incompletely of fuel, meeting Formed smoke particle (PM), the harmful components such as carbon monoxide, hydrocarbon (HCs) and oxynitrides (NOx).For reducing the discharge of Motor Vehicle harmful components, cleaning catalyst is all provided with (as gasoline car uses three-way catalyst in the vent systems of motor, diesel-oil vehicle uses oxidation catalyst, NOx storage reduction catalyst, four-way catalysts etc.), in order to harmful components CO, HCs, NOx and PM in exhaust are converted into harmless components.The exhaust emission control catalyst being placed in outlet pipe is made up of active component and carrier usually.Composite oxides, the composite oxide of metal of active component mainly containing precious metal.Carrier has ceramic honey comb and porous metals two class.Because the activity of cleaning catalyst needs (such as 350 DEG C) competence exertion effect at a certain temperature, and in the motor vehicle cold start stage because Exhaust treating catalyst agent surface temperature is low, effectively harmful components in exhaust cannot be processed immediately at the initial stage started.Current catalysis technique can exhaust preferably under processor motor-car normal operational condition, but the motor vehicle starting stage causes Exhaust treating catalyst agent not play a role because temperature is low, but now because of fuel can not in Thorough combustion exhaust Harmful ingredient content high, so pump-down process situation when the emission standard whether motor vehicle emission can meet increasingly stringent depends primarily on startup at present.Therefore, how rapidly and efficiently thermal exhaust process catalyzer to make it reach optimum working temperature extremely important.
In order to solve the problem, publication number is that the patent of CN 101082295A proposes a kind of follow-on air injection reaction technology, improves the problem that the catalyzer rate of heating of existing air injection reaction technology existence is excessively slow.The overall shortcoming of this technology is: system complex, the defect that air injection reaction technology self utilizes fuel heat heatable catalyst can not be overcome completely, namely catalyzer relies on the heat of motor fuel burning to carry out thermal exhaust catalyzer, although the air jet technology improved improves the speed of fuel heat supply to a certain extent, but the heating of Exhaust treating catalyst agent still lags behind the burning of fuel, inevitably there is part exhaust and directly discharge without abundant process.In addition, patent (publication number CN 103347611 A) discloses a kind of external heat technology of electric heating catalyzer.This technology is the surrounding of being carried out particular design heating heater by the structure at the two poles of the earth to cylinder shape catalyst both sides, to reach the object of the even rapid heating of monolith.Consider the requirement of resistance heating to heater resistance, the method needs heat transfer indirect heating catalyzer, and heat conducting speed constrains the problem that indirect heating catalyzer exists heating delays.At present, the most shot-catalyst agent onset time that the heating technology of existing automobile exhausting process catalyzer can provide is general all after 20 seconds, and the exhaust that is within cold start-up 20 seconds is difficult to be effectively addressed.
According to above description, want fully to process exhaust to greatest extent, make Exhaust treating catalyst agent reach the pump-down process of initiation temperature to cold start-up of catalyzer at short notice extremely important.
Summary of the invention
Object of the present invention and be in order to the low and technical problem and provide a kind of purifying vehicle exhaust gas catalyzer heating system such as can not to play a role immediately of exhaust emission control catalyst temperature when solving above-mentioned motor vehicle starting, exhaust emission control catalyst surface temperature is elevated to rapidly required temperature when can realize motor vehicle starting by this system, and exhaust emission control catalyst is played a role immediately.
Technological scheme of the present invention
A kind of purifying vehicle exhaust gas catalyzer heating system, comprises motor, engine exhaust pipe, the exhaust emission control catalyst carrier be placed in engine exhaust pipe, the exhaust emission control catalyst be placed in exhaust emission control catalyst carrier;
Described exhaust emission control catalyst carrier is the porous catalyst carrier having magnetic conduction function or have conducting function;
Also comprise:
A temperature transducer, described temperature transducer is placed in exhaust emission control catalyst;
A heating equipment, by described heating devices heat exhaust emission control catalyst, described heating equipment is heating coil or two heating electrodes;
When described exhaust emission control catalyst carrier is the porous catalyst carrier with magnetic conduction function, described heating equipment is heating coil, and heating coil is placed between exhaust emission control catalyst carrier and engine exhaust pipe; If engine exhaust pipe is non-magnet material, then heating coil can also be placed in the periphery of engine exhaust pipe.
When described exhaust emission control catalyst carrier is the porous catalyst carrier with conducting function, described heating equipment is two heating electrodes, and two heating electrodes are connected on the relative two sides of exhaust emission control catalyst carrier;
A heating controller, heat exhaust emission control catalyst for controlling heating equipment, described heating controller is preferably AC frequency generator;
An electronic monitoring and control system, described electronic monitoring and control system comprises switch element, comparing unit, setup unit and control unit;
Whether the switch element of described electronic monitoring and control system detects motor and starts, is about to start or engine stop, and the result detected is sent to control unit;
Temperature transducer is detected that the temperature value of exhaust emission control catalyst is compared with the setting value of setup unit by the comparing unit of described electronic monitoring and control system, and the result is relatively sent to control unit;
Start when control unit obtains motor or be about to start, and temperature transducer is when detecting that the temperature value of exhaust emission control catalyst is less than the signal of the setting value of setup unit, control unit starts heating controller, by heating devices heat exhaust emission control catalyst;
When control unit obtains engine stop, or when temperature transducer detects that the temperature value of exhaust emission control catalyst is greater than the signal of the setting value of setup unit, control unit closes heating controller;
Further, the temperature departure that the control unit of electronic monitoring and control system can also calculate according to comparing unit, revises the frequency of the Ac that AC frequency generator produces, thus controls the temperature of exhaust emission control catalyst more accurately.
Beneficial effect of the present invention
A kind of purifying vehicle exhaust gas catalyzer heating system of the present invention, when motor vehicle starting, exhaust emission control catalyst surface temperature can be elevated to rapidly required temperature, exhaust emission control catalyst is played a role immediately, thus the problem that when solving motor vehicle starting in prior art, exhaust emission control catalyst can not play a role immediately because temperature is low.
Accompanying drawing explanation
The structural representation of a kind of purifying vehicle exhaust gas catalyzer heating system of Fig. 1, embodiment 1;
The electrical principle block diagram of Fig. 2, purifying vehicle exhaust gas catalyzer heating system;
The structural representation of a kind of purifying vehicle exhaust gas catalyzer heating system of Fig. 3, embodiment 2.
Embodiment
Also by reference to the accompanying drawings the present invention is set forth further below by specific embodiment, but do not limit the present invention.
embodiment 1
A kind of purifying vehicle exhaust gas catalyzer heating system, its structural representation as shown in Figure 1, comprises motor 1, engine exhaust pipe 2, the exhaust emission control catalyst carrier 3 be placed in engine exhaust pipe, the exhaust emission control catalyst 4 be placed in exhaust emission control catalyst carrier;
Described exhaust emission control catalyst carrier 3 is for having the porous catalyst carrier of magnetic conduction function;
Also comprise:
A temperature transducer 5, described temperature transducer is placed in exhaust emission control catalyst;
A heating equipment 6, for thermal exhaust cleaning catalyst 4, described heating equipment 6 is heating coil, and heating coil is placed between exhaust emission control catalyst carrier 3 and engine exhaust pipe 2;
If engine exhaust pipe 2 is non-magnet material, then heating equipment 6 i.e. heating coil can also be placed in the periphery of engine exhaust pipe 2;
A heating controller 7, heat for controlling heating equipment 6 pairs of exhaust emission control catalysts 4, described heating controller 7 is preferably AC frequency generator, when heating controller 7 i.e. AC frequency generator starts, can make to produce alternating magnetic field in heating equipment 6 i.e. heating coil, the exhaust emission control catalyst carrier 3 i.e. porous catalyst carrier of magnetic conduction function continuous cutting magnetic line in heating equipment 6 i.e. heating coil produces eddy current, the exhaust emission control catalyst 4 being positioned at exhaust emission control catalyst carrier 3 is directly heated in the generation of eddy current, thus make the temperature of exhaust emission control catalyst 4 increase rapidly, thus exhaust emission control catalyst 4 is played a role immediately,
An electronic monitoring and control system 8, described electronic monitoring and control system comprises switch element, comparing unit, setup unit and control unit.
The electrical principle block diagram of above-mentioned a kind of purifying vehicle exhaust gas catalyzer heating system as shown in Figure 2, whether the switch element of described electronic monitoring and control system detects motor 1 and starts, is about to start or engine stop, and the result detected is sent to the control unit of electronic monitoring and control system 8;
Result after relatively compared with the setting value of the setup unit of electronic monitoring and control system 8, and is sent to the control unit of electronic monitoring and control system 8 by the temperature value of the exhaust emission control catalyst 4 that temperature transducer 5 detects by the comparing unit of described electronic monitoring and control system;
Start when the control unit of electronic monitoring and control system 8 obtains motor 1 or be about to start, and temperature transducer 5 is when detecting that the temperature value of exhaust emission control catalyst 4 is less than the signal of the setting value of the setup unit of electronic monitoring and control system 8, control unit starts heating controller 7 i.e. AC frequency generator, by heating equipment 6 i.e. heating coils heat exhaust emission control catalyst 4;
Stop when the control unit of electronic monitoring and control system 8 obtains motor 1, or temperature transducer 5 is when detecting that the temperature value of exhaust emission control catalyst 4 is greater than the signal of the setting value of the setup unit of electronic monitoring and control system 8, the control unit of electronic monitoring and control system 8 closes heating controller 7 i.e. AC frequency generator;
Further, the temperature departure that the control unit of electronic monitoring and control system can also calculate according to comparing unit, revises the frequency of the Ac that heating controller 7 i.e. AC frequency generator produces, thus controls the temperature of exhaust emission control catalyst 4 more accurately.
embodiment 2
A kind of purifying vehicle exhaust gas catalyzer heating system, its structural representation as shown in Figure 3, comprises motor 1, engine exhaust pipe 2, the exhaust emission control catalyst carrier 3 be placed in engine exhaust pipe, the exhaust emission control catalyst 4 be placed in exhaust emission control catalyst carrier;
Described exhaust emission control catalyst carrier 3 is for having the porous catalyst carrier of conducting function, this exhaust emission control catalyst carrier is made up of the base material that can conduct electricity, conductive base has certain bending ripple, multilayer corrugated shape conductive base is fixed together, forms the catalyst carrier with certain duct.
Also comprise:
A temperature transducer 5, described temperature transducer 5 is placed in exhaust emission control catalyst 4;
A heating equipment, for thermal exhaust cleaning catalyst 4, described heating equipment is two heating electrodes 61,62, and two heating electrodes 61,62 are connected on the relative two sides of exhaust emission control catalyst carrier 3;
A heating controller 7, for controlling heating equipment i.e. two heating electrodes 61, 62 pairs of exhaust emission control catalysts 4 heat, described heating controller 7 is AC frequency generator, namely the alternating current (a.c.) that AC frequency generator provides to have a certain frequency has the porous catalyst carrier of conducting function by exhaust emission control catalyst carrier 3, the alternating current produced can form numerous vortices when flowing through exhaust emission control catalyst carrier 3 namely to have the porous catalyst carrier of conducting function makes exhaust emission control catalyst carrier 3 namely have the porous catalyst carrier heating of conducting function, thus reach the object of thermal exhaust cleaning catalyst 4.Compare with the resistance heating of routine, this mode is interior mode of heating, heat directly produces with it exhaust emission control catalyst 4, therefore the utilization ratio of heat is high, energy consumption is low, heating time shortens greatly, can reach activation temperature by thermal exhaust cleaning catalyst 4 rapidly and efficiently, make exhaust emission control catalyst 4 fast onset tail gas purifying function;
An electronic monitoring and control system, described electronic monitoring and control system comprises switch element, comparing unit, setup unit and control unit, and the working principle of described electronic monitoring and control system is identical with embodiment 1.
In sum, a kind of purifying vehicle exhaust gas catalyzer heating system of the present invention, when motor vehicle starting, exhaust emission control catalyst surface temperature can be elevated to rapidly required temperature, exhaust emission control catalyst is played a role immediately, thus the problem that when solving motor vehicle starting in prior art, exhaust emission control catalyst can not play a role immediately because temperature is low.
The above is only the citing of embodiments of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (5)
1. a purifying vehicle exhaust gas catalyzer heating system, comprise motor, engine exhaust pipe, the exhaust emission control catalyst carrier be placed in engine exhaust pipe, the exhaust emission control catalyst be placed in exhaust emission control catalyst carrier, characterized by further comprising:
A temperature transducer, described temperature transducer is placed in exhaust emission control catalyst;
A heating equipment, by described heating devices heat exhaust emission control catalyst;
A heating controller, heats exhaust emission control catalyst for controlling heating equipment;
An electronic monitoring and control system, described electronic monitoring and control system comprises switch element, comparing unit, setup unit and control unit;
Whether the switch element of described electronic monitoring and control system detects motor and starts, is about to start or engine stop, and the result detected is sent to control unit;
Result relatively compared with the setting value of setup unit, and is sent to control unit by the temperature value of the exhaust emission control catalyst that temperature transducer detects by the comparing unit of described electronic monitoring and control system;
Start when the control unit of electronic monitoring and control system obtains motor or be about to start, and the temperature value of exhaust emission control catalyst that temperature transducer detects is when being less than the signal of the setting value of the setup unit of electronic monitoring and control system, the control unit of electronic monitoring and control system starts heating controller, by heating devices heat exhaust emission control catalyst;
When the control unit of electronic monitoring and control system obtains engine stop, or temperature transducer is when detecting that the temperature value of exhaust emission control catalyst is greater than the signal of the setting value of the setup unit of electronic monitoring and control system, the control unit of electronic monitoring and control system closes heating controller.
2. purifying vehicle exhaust gas catalyzer heating system as claimed in claim 1, is characterized in that described exhaust emission control catalyst carrier is the porous catalyst carrier with magnetic conduction function;
Described heating equipment is heating coil;
Described heating controller is AC frequency generator;
AC frequency generator connects heating coil, and heating coil is placed between exhaust emission control catalyst carrier and engine exhaust pipe.
3. purifying vehicle exhaust gas catalyzer heating system as claimed in claim 1, is characterized in that described exhaust emission control catalyst carrier is the porous catalyst carrier with magnetic conduction function;
Described heating equipment is heating coil;
Described heating controller is AC frequency generator;
AC frequency generator connects heating coil, and heating coil is placed in the periphery of engine exhaust pipe;
Engine exhaust pipe is non-magnet material.
4. purifying vehicle exhaust gas catalyzer heating system as claimed in claim 1, it is characterized in that described exhaust emission control catalyst carrier is the porous catalyst carrier with conducting function, described heating equipment is two heating electrodes, described heating controller is AC frequency generator, AC frequency generator connects two heating electrodes respectively, and two heating electrodes are connected on the relative two sides of exhaust emission control catalyst carrier.
5. the purifying vehicle exhaust gas catalyzer heating system as described in Claims 2 or 3 or 4, is characterized in that the temperature departure that the control unit of electronic monitoring and control system calculates according to comparing unit, revises the frequency of the Ac that AC frequency generator produces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510027636.XA CN104775875A (en) | 2015-01-20 | 2015-01-20 | Motor vehicle exhaust purification catalyst heating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510027636.XA CN104775875A (en) | 2015-01-20 | 2015-01-20 | Motor vehicle exhaust purification catalyst heating system |
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| CN104775875A true CN104775875A (en) | 2015-07-15 |
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| CN201510027636.XA Pending CN104775875A (en) | 2015-01-20 | 2015-01-20 | Motor vehicle exhaust purification catalyst heating system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812320A (en) * | 2017-11-21 | 2019-05-28 | 排放方案先进技术股份有限公司 | The emission control systems measured using resonance frequency and the method being used therewith |
| CN114776416A (en) * | 2022-04-01 | 2022-07-22 | 浙江吉利控股集团有限公司 | Internal combustion engine emission control system, control method, and vehicle |
-
2015
- 2015-01-20 CN CN201510027636.XA patent/CN104775875A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812320A (en) * | 2017-11-21 | 2019-05-28 | 排放方案先进技术股份有限公司 | The emission control systems measured using resonance frequency and the method being used therewith |
| CN114776416A (en) * | 2022-04-01 | 2022-07-22 | 浙江吉利控股集团有限公司 | Internal combustion engine emission control system, control method, and vehicle |
| CN114776416B (en) * | 2022-04-01 | 2023-12-05 | 浙江吉利控股集团有限公司 | Internal combustion engine emission control system, control method, and vehicle |
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