CN102146833A - Inlet temperature control device for postprocessor of engine based on phase-change materials - Google Patents
Inlet temperature control device for postprocessor of engine based on phase-change materials Download PDFInfo
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- CN102146833A CN102146833A CN2011100757291A CN201110075729A CN102146833A CN 102146833 A CN102146833 A CN 102146833A CN 2011100757291 A CN2011100757291 A CN 2011100757291A CN 201110075729 A CN201110075729 A CN 201110075729A CN 102146833 A CN102146833 A CN 102146833A
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- phase
- outlet pipe
- temperature transducer
- temperature
- main exhaust
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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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Abstract
The invention relates to an inlet temperature control device for a postprocessor of an engine based on phase-change materials, which belongs to the technical field of engine air exhaust postprocessing and engine waste heat utilizing. A phase-change heat exchanger is connected between an air inlet pipe and an air outlet pipe of a U-shaped air exhaust pipe; an air inlet of the air inlet pipe and an air outlet of the air outlet pipe in the U-shaped air exhaust pipe 5 are placed in a main air exhaust pipe in front of a mixer; the air inlet of the air inlet pipe in the U-shaped air exhaust pipe 5 faces toward the direction opposite to the flowing direction of waste gas in the main air exhaust pipe; the air outlet of the air outlet pipe in the U-shaped air exhaust pipe faces toward the direction that is the same as the flowing direction of the waste gas in the main air exhaust pipe; a proportional control valve connected with a control module is installed on the air inlet pipe of the U-shaped air exhaust pipe; one end of each of three temperature sensors is fixedly connected with the inlet end of the main air exhaust pipe, the outlet end of the phase-change heat exchanger and the outlet end of the main air exhaust pipe, and the other end of each of the three temperature sensors is connected with the control module. The inlet temperature control device can control the environment in the main air exhaust pipe within the ideal temperature range, so that the postprocessor exerts the best effect, and the exhaust waste heat energy recovery and utilization is realized.
Description
Technical field
The invention belongs to engine exhaust reprocessing and engine exhaust heat and utilize technical field, be specifically related to phase-change material and absorb by phase transformation or emit heat, and to the device of preprocessor inlet temperature control.
Background technique
Serious day by day along with automobile exhaust pollution, the motor vehicle exhaust emission rules are also more and more stricter.The emission controls by improving combustion of motor has not satisfied strict rules, then adopts the technology path of emission controls by improving combustion and preprocessor combination, just can reach more strict statutory standard.
Yet, the selective catalytic reduction of existing post-processing technology (SCR) after-treatment system, granule capturing (DPF) after-treatment system, oxidizing catalytic converter (DOC) and particulate oxidation catalytic converter (POC) etc., these post-processing technologies all need just can play optimum efficiency in the temperature window of certain limit, example, one of reducing agent of SCR urea is decomposed into (NH in 250 ℃～400 ℃ temperature ranges
3) efficient be more than 85%, simultaneously catalyzer also can play best catalytic effect; For another example, dpf regeneration needs the temperature more than 550 ℃.But in the diesel engine application of routine, exhaust temperature too high or too low situation occurs through regular meeting.
Phase-change material has specific transformation temperature, can utilize phase transformation to absorb near this temperature or emits a large amount of heats and keep the temperature of near constant.As seen, utilize phase-change material can reduce the preprocessor inlet temperature in the very high situation utilization heat absorption of row's temperature on the one hand, also can when row's temperature is lower, heat release promote the preprocessor inlet temperature on the other hand, thereby the reprocessing inlet temperature is maintained in the desirable temperature window.
Summary of the invention
The object of the present invention is to provide a kind of U type outlet pipe bypass that has phase-change heat-exchanger, can be according to the function of exhaust gas temperature in the main exhaust and phase transformation device, make by the waste gas in the U type outlet pipe and mix with waste gas in the main exhaust, the mix waste gas temperature can reach desirable temperature range, and solves the too high or too low problem of ambient temperature in the main exhaust.
The present invention is made up of motor 1, proportional control valve 2, phase-change heat-exchanger 3, temperature transducer II 4, U type outlet pipe 5, mixer 6, preprocessor 7, temperature transducer III8, control module 9, main exhaust 10, temperature transducer I 11, and wherein the main exhaust 10 of motor 1 is connected with preprocessor 7 through mixer 6; Be connected to phase-change heat-exchanger 3 between the suction tude of U type outlet pipe 5 and the steam outlet pipe; The suction port of suction tude and the air outlet of steam outlet pipe oppositely are provided with in the U type outlet pipe 5, and place in the main exhaust 10 before the mixer 6, and suction tude seals affixed with the part that steam outlet pipe contacts with main exhaust 10; The suction port of suction tude is towards opposite with the flow direction of waste gas in the main exhaust 10 in the U type outlet pipe 5; The air outlet of steam outlet pipe is towards identical with the flow direction of waste gas in the main exhaust 10 in the U type outlet pipe 5; The proportional control valve 2 that is connected with control module 9 is housed on the suction tude of U type outlet pipe 5; Temperature transducer I 11, temperature transducer II4 and temperature transducer III8 one end are fixed in main exhaust 10 entry ends, phase-change heat-exchanger 3 and main exhaust 10 outlet end respectively; Temperature transducer I 11, temperature transducer II4 all are connected with control module 9 with the temperature transducer III8 the other end.
The heat responsive element of temperature transducer II 4 its sound ends places on the phase-change material in the phase-change heat-exchanger 3.
For reducing the interference and the obstruction of 5 pairs of exhaust air flow of U type outlet pipe, curved section can adopt airflow design in the U type outlet pipe 5.
The suction tude of U type outlet pipe 5 adopts the pitot tube type design, can make exhaust flow into U type outlet pipe 5 swimmingly; The steam outlet pipe of U type outlet pipe 5 adopts the pitot tube type design, can accelerate in the U type outlet pipe 5 that exhaust evenly mixes in the exhaust and main exhaust 10.
In 6 pairs of U types of mixer outlet pipe 5 in waste gas and the main exhaust 10 waste gas fully evenly mix and play a role, and make the temperature of mix waste gas can be even.
In the present invention, can determine according to actual conditions, need not to be equipped with other temperature transducer in this device based on the physical dimension of the motor preprocessor inlet temperature control gear of phase-change material.
Principle of the present invention is: when motor 1 running, the aperture of control module 9 Comparative Examples control valves 2 is regulated, allow a part of exhaust enter U type outlet pipe 5, phase-change heat-exchanger 3 utilizes the phase-change characteristic of phase-change material, exhaust is absorbed or emits a large amount of heats, make that exhaust mixes with exhaust in the main exhaust 10 in the U type outlet pipe 5, thereby preprocessor 7 inlet temperatures are maintained in the desirable temperature window.
Beneficial effect of the present invention is: can solve the too high or too low problem of ambient temperature in the main exhaust, environment in the main exhaust can be controlled in the ideal temperature scope, make preprocessor give play to optimum efficiency, realize the recovery and the utilization of the exhaust waste heat energy.
Description of drawings
Fig. 1 is based on the motor preprocessor inlet temperature control gear schematic representation of phase-change material
Wherein: 1. motor 2. proportional control valves 3. phase-change heat-exchangers 4. temperature transducer II 5.U type outlet pipes 6. mixers 7. preprocessors 8. temperature transducer III 9. control modules 10. main exhausts 11. temperature transducer IT
A--the delivery temperature of the measured motor of-temperature transducer I; T
B--the temperature of phase-change material in the measured phase-change heat-exchanger of-temperature transducer II; T
C--the temperature of the measured preprocessor inlet of-temperature transducer III.
Embodiment
The present invention is made up of motor 1, proportional control valve 2, phase-change heat-exchanger 3, temperature transducer II 4, U type outlet pipe 5, mixer 6, preprocessor 7, temperature transducer III8, control module 9, main exhaust 10, temperature transducer I 11, and wherein the main exhaust 10 of motor 1 is connected with preprocessor 7 through mixer 6; Be connected to phase-change heat-exchanger 3 between the suction tude of U type outlet pipe 5 and the steam outlet pipe; The suction port of suction tude and the air outlet of steam outlet pipe oppositely are provided with in the U type outlet pipe 5, and place in the main exhaust 10 before the mixer 6, and suction tude seals affixed with the part that steam outlet pipe contacts with main exhaust 10; The suction port of suction tude is towards opposite with the flow direction of waste gas in the main exhaust 10 in the U type outlet pipe 5; The air outlet of steam outlet pipe is towards identical with the flow direction of waste gas in the main exhaust 10 in the U type outlet pipe 5; The proportional control valve 2 that is connected with control module 9 is housed on the suction tude of U type outlet pipe 5; Temperature transducer I 11, temperature transducer II4 and temperature transducer III8 one end are fixed in main exhaust 10 entry ends, phase-change heat-exchanger 3 and main exhaust 10 outlet end respectively; Temperature transducer I 11, temperature transducer II4 all are connected with control module 9 with the temperature transducer III8 the other end.
The heat responsive element of temperature transducer II 4 its sound ends places on the phase-change material in the phase-change heat-exchanger 3, can compare the temperature of phase-change material and exhaust, controls proportional control valve 2 more accurately.
Carry out simple declaration below in conjunction with 1 pair of of the present invention manipulating of accompanying drawing:
After motor 1 running, temperature transducer I 11 can measure the delivery temperature T of motor 1
A, temperature transducer II4 can measure the temperature T of phase-change material in the phase-change heat-exchanger 3
B, temperature transducer III8 can measure the temperature T of preprocessor 7 inlets
C, and with T
A, T
BAnd T
CSend control module 9 to.
Record the delivery temperature T of motor 1 as temperature transducer II11
AWhen too high or too low, by 9 couples of T of control module
A, T
B, T
CAnd carry out specific logical algorithm between the extreme value of ideal temperature scope, thereby control module 9 will be regulated the aperture of proportional control valve 2, phase-change heat-exchanger 3 utilizes the phase-change characteristic of phase-change material, exhaust is absorbed or emits a large amount of heats, make the exhaust reduction or the elevated temperature that flow through, after treating in the U type outlet pipe 5 waste gas and waste gas in the main exhaust 10 mixing, temperature transducer III8 can determine T
CWhether in preprocessor 7 inlet ideal temperature windows, if T
CIn preprocessor 7 inlet ideal temperature windows, then stop to regulate proportional control valve 2; Otherwise control module 9 is carried out specific logical algorithm once more according to the temperature value of feedback, continues to regulate the aperture of proportional control valve 2, and the temperature maintenance that makes mixing exhaust is in preprocessor 7 inlet ideal temperature windows.
Claims (3)
1. motor preprocessor inlet temperature control gear based on phase-change material, form by motor (1), proportional control valve (2), phase-change heat-exchanger (3), temperature transducer II (4), U type outlet pipe (5), mixer (6), preprocessor (7), temperature transducer III (8), control module (9), main exhaust (10), temperature transducer I (11), it is characterized in that the main exhaust (10) of motor (1) is connected with preprocessor (7) through mixer (6); Be connected to phase-change heat-exchanger (3) between the suction tude of U type outlet pipe (5) and the steam outlet pipe; The suction port of suction tude and the air outlet of steam outlet pipe oppositely are provided with in the U type outlet pipe (5), and place in the preceding main exhaust (10) of mixer (6), suction tude is affixed with the part sealing that steam outlet pipe contacts with main exhaust (10), and the suction port of suction tude is towards opposite with the flow direction of waste gas in the main exhaust (10) in the U type outlet pipe 5; The air outlet of steam outlet pipe is towards identical with the flow direction of waste gas in the main exhaust (10) in the U type outlet pipe (5); The proportional control valve (2) that is connected with control module (9) is housed on the suction tude of U type outlet pipe (5); Temperature transducer I (11), temperature transducer II (4) and temperature transducer III (8) one ends are fixed in main exhaust (10) entry end, phase-change heat-exchanger (3) and main exhaust (10) outlet end respectively; Temperature transducer I (11), temperature transducer II (4) all are connected with control module (9) with temperature transducer III (8) the other end.
2. by the described motor preprocessor inlet temperature control gear of claim 1, it is characterized in that the heat responsive element of its sound end of described temperature transducer II (4) places on the interior phase-change material of phase-change heat-exchanger (3) based on phase-change material.
3. by the described motor preprocessor inlet temperature control gear of claim 1, it is characterized in that described mixer (6) can be integrated on the main exhaust (10) according to the formula rule based on phase-change material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100757291A CN102146833B (en) | 2011-03-29 | 2011-03-29 | Inlet temperature control device for postprocessor of engine based on phase-change materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100757291A CN102146833B (en) | 2011-03-29 | 2011-03-29 | Inlet temperature control device for postprocessor of engine based on phase-change materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102146833A true CN102146833A (en) | 2011-08-10 |
| CN102146833B CN102146833B (en) | 2012-07-25 |
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| CN2011100757291A Expired - Fee Related CN102146833B (en) | 2011-03-29 | 2011-03-29 | Inlet temperature control device for postprocessor of engine based on phase-change materials |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1144551A (en) * | 1994-01-27 | 1997-03-05 | 戴维·K·本森 | Thermal management of vehicle exhaust systems |
| JPH11125113A (en) * | 1997-10-23 | 1999-05-11 | Denso Corp | Exhaust emission control device for internal combustion engine |
| CN101382399A (en) * | 2007-09-05 | 2009-03-11 | 中国科学院工程热物理研究所 | Thermal management method and device for micro dimension composite composite phase change cooling for automobile |
| SE0950694A1 (en) * | 2009-09-23 | 2011-03-24 | Scania Cv Ab | Thermoelectric generator system |
| CN201991595U (en) * | 2011-03-29 | 2011-09-28 | 吉林大学 | Temperature control device of engine postprocessor inlet based on phase-change material (PCM) |
-
2011
- 2011-03-29 CN CN2011100757291A patent/CN102146833B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1144551A (en) * | 1994-01-27 | 1997-03-05 | 戴维·K·本森 | Thermal management of vehicle exhaust systems |
| JPH11125113A (en) * | 1997-10-23 | 1999-05-11 | Denso Corp | Exhaust emission control device for internal combustion engine |
| CN101382399A (en) * | 2007-09-05 | 2009-03-11 | 中国科学院工程热物理研究所 | Thermal management method and device for micro dimension composite composite phase change cooling for automobile |
| SE0950694A1 (en) * | 2009-09-23 | 2011-03-24 | Scania Cv Ab | Thermoelectric generator system |
| CN201991595U (en) * | 2011-03-29 | 2011-09-28 | 吉林大学 | Temperature control device of engine postprocessor inlet based on phase-change material (PCM) |
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| Publication number | Publication date |
|---|---|
| CN102146833B (en) | 2012-07-25 |
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Application publication date: 20110810 Assignee: Changchun No.1 Automobile Sihuan Engine Mfg. Co., Ltd. Assignor: Jilin University Contract record no.: 2012220000035 Denomination of invention: Inlet temperature control device for postprocessor of engine based on phase-change materials Granted publication date: 20120725 License type: Exclusive License Record date: 20120816 |
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Granted publication date: 20120725 Termination date: 20190329 |
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