CN102852610A - Pressure difference measuring system of automobile postprocessor - Google Patents
Pressure difference measuring system of automobile postprocessor Download PDFInfo
- Publication number
- CN102852610A CN102852610A CN2012103612369A CN201210361236A CN102852610A CN 102852610 A CN102852610 A CN 102852610A CN 2012103612369 A CN2012103612369 A CN 2012103612369A CN 201210361236 A CN201210361236 A CN 201210361236A CN 102852610 A CN102852610 A CN 102852610A
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- steel pipe
- pipe
- preprocessor
- pressure difference
- flexible pipe
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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 provides a pressure difference measuring system of an automobile postprocessor. The pressure difference measuring system comprises a front gas extracting pipe, a rear gas extracting pipe and a pressure sensor. The front gas extracting pipe comprises a first steel pipe and a first hose, and the rear gas extracting pipe comprises a second steel pipe and a second hose. One end of the first steel pipe of the front gas extracting pipe is connected with a gas feeding end of a postprocessor, the other end of the first steel pipe is connected with the first hose, and the other end of the first hose is connected with the pressure sensor; and one end of the second steel pipe of the rear gas extracting pipe is connected with a gas discharging end of the rear processor, the other end of the second steel pipe is connected with the second hose, and the other end of the second hose is connected with the pressure sensor. The pressure difference measuring system of the automobile postprocessor is reliable in pressure difference measuring pipeline systems, good in pressure sensor measuring accuracy and capable of performing pressure signal acquisition on the postprocessor.
Description
Technical field
The present invention relates to the vehicle exhaust processing system, relate in particular to the pressure difference signal acquiring system for automobile preprocessor system.
Background technique
Along with the development of automotive industry, more and more higher to the motor vehicle emission requirement, many vehicles have increased exhaust after treatment system, to reduce vehicle exhaust to the adverse effect of environment.Therefore, pressure signal collection and the fault diagnosis of automobile preprocessor system are particularly important, and existing preprocessor system lacks the monitoring that the Real Time Monitoring structure is carried out pressure, temperature etc.In addition, when the preprocessor system carries out the data targets such as Real Time Monitoring pressure, temperature, pressure monitor needs the setting pressure sensor, and general pressure transducer is relatively poor to the tolerance of temperature, therefore need to draw one section pipeline from preprocessor and carry out measuring behind the cooled exhaust gas.This section pipeline requires that higher sealing gas ability is arranged, and high temperature resistant, the corrosion ability of anti-tail gas prevents from entering the ability of pressure transducer and good heat dissipation potential behind the condensation vapor.
Summary of the invention
The object of the invention is to solve the problem that automobile preprocessor system pressure detects, whether normally a kind of automobile preprocessor operation pressure difference measuring system that detects is provided.
Realize above-mentioned purpose, technological scheme provided by the invention is as follows:
A kind of automobile preprocessor pressure difference measuring system comprises:
Before get tracheae, comprise the first steel pipe, the first flexible pipe;
After get tracheae, comprise the second steel pipe, the second flexible pipe;
Pressure transducer;
The first steel pipe one end of getting tracheae before described is connected with described preprocessor inlet end, and the other end is connected with described the first flexible pipe, and the described first flexible pipe the other end is connected with described pressure transducer; The second steel pipe one end of getting tracheae after described is connected with described preprocessor exhaust end, and the other end is connected with described the second flexible pipe, and the described second flexible pipe the other end is connected with described pressure transducer.
Selectable, described the first steel pipe be connected steel pipe and at an end that is connected with described preprocessor the section of being inclined upwardly arranged.
Selectable, described the first flexible pipe, the second flexible pipe are heat-resistant hose.
Selectable, described the first steel pipe, the second steel pipe adopt conic nut to be connected with described preprocessor interface.
Selectable, the end that described the first steel pipe is connected with described the first flexible pipe is round as a ball bulge structure, and/or described the second steel pipe is round as a ball bulge structure at an end that is connected with described the second flexible pipe.
Selectable, described the first steel pipe and the first flexible pipe joint are fixedly clamped with pipe clamp, and/or described the second steel pipe and the second flexible pipe joint are fixedly clamped with pipe clamp.
Selectable, have connection bracket between described the first steel pipe and the second steel pipe.
The present invention gets respectively gas to pressure transducer before and after preprocessor, gather pressure signal with this.
Further, pipeline structure of the present invention adopts steel pipe, has guaranteed to cool off when high-temperature gas arrives pressure transducer in the pipeline fully, for pressure transducer provides the environment that can work.
Further, the first steel pipe be connected steel pipe and at an end that is connected with described preprocessor the section of being inclined upwardly arranged, when vehicle by running state conversion to vehicle stop state, the contained steam of tail gas of measuring in the pipeline can condense, under Action of Gravity Field, be back in the preprocessor, guaranteed that the pressure transducer measurement terminal can not intake.
Further, the conic nut at the first steel pipe, the second steel pipe two ends and round as a ball bulge structure make line seal good.Connection bracket between the first steel pipe and the second steel pipe makes whole pressure difference detection system architecture firm.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further details, wherein:
Fig. 1 is the three-dimensional erection drawing of the embodiment of the invention.
Fig. 2 is the structural representation of the embodiment of the invention the first steel pipe, the second steel pipe.
Fig. 3 is the partial enlarged drawing A that gets tracheae and preprocessor interface joint before the present invention.
Fig. 4 is the partial enlarged drawing B of the present invention's the first steel pipe and the first flexible pipe joint.
Sequence number among the upper figure: get tracheae 4-pressure transducer 21-the first steel pipe 210-the first steel pipe section of being inclined upwardly 22-the first flexible pipe 31-the second steel pipe 310-the second steel pipe section of being inclined upwardly 32-the second flexible pipe 5-conic nut 61-support 62-support after getting tracheae 3-before the 1-preprocessor 11-preprocessor interface 2-
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described by specific embodiment.
Fig. 1 is the three-dimensional erection drawing of the embodiment of the invention.As shown in Figure 1, get before preprocessor pressure difference measuring system comprises tracheae 2, after get tracheae 3, pressure transducer 4; Before get tracheae 2 the first steel pipe 21 1 ends be connected with preprocessor 1 inlet end, the other end inserts the first flexible pipe 22, the first flexible pipes 22 the other ends and is connected with pressure transducer 4; After get tracheae the second steel pipe 31 1 ends be connected with preprocessor 1 exhaust end, the other end inserts in the second flexible pipe 32, the second flexible pipe 32 the other ends are connected with pressure transducer 4.Preferably, the first steel pipe 21 has the first steel pipe section of being inclined upwardly 210 at an end that is connected with preprocessor 1 in the present embodiment, the second steel pipe 31 has the second steel pipe section of being inclined upwardly 310, the first flexible pipes at an end that is connected with preprocessor 1, the second flexible pipe is heat-resistant hose.Those of ordinary skills can imagine, before get tracheae 2 and after get tracheae 3 can level connection joint to pressure transducer, flexible pipe adopts conventional hoses, but pipeline does not possess good heat radiation, temperature capacity and the high temperature resistant ability that enters pressure transducer behind the condensation vapor of preventing of this preferred embodiment.
Fig. 2 is the structural representation of the embodiment of the invention the first steel pipe, the second steel pipe.As shown in Figure 2, be connected and fixed by support 61 and support 62 between the first steel pipe 21 and the second steel pipe 31, strengthened the stability of pipe-line system.
Fig. 3 is the partial enlarged drawing A that gets tracheae and preprocessor interface joint before the present invention.As shown in Figure 3, the first steel pipe 21 adopts conic nut 5 to be connected with preprocessor interface 11, sticks up outside the first steel pipe 21 ends to be stuck in conic nut 5 inside grooves, and conic nut 5 internal threads are threaded with preprocessor interface 11.The second steel pipe 31 can be selected the above-mentioned mode that connects with the preprocessor interface, also can select other modes.Those of ordinary skills can imagine, the first steel pipe 21, the second steel pipe 31 also can adopt welding, pipe joint etc. to be connected with preprocessor interface 11.
Fig. 4 is the partial enlarged drawing B of the present invention's the first steel pipe and the first flexible pipe joint.As shown in Figure 4, the first steel pipe 21 adopts round as a ball bulge structure at an end that is connected with the first flexible pipe 22, and the first steel pipe inserts in the first flexible pipe, is fixedly clamped with pipe clamp.The second steel pipe 31 can adopt round as a ball bulge structure at an end that is connected with the second flexible pipe 32, also can select other modes.
Before get tracheae 2 and get gas from preprocessor 1 after, gas enters pressure transducer 4 through the first steel pipe 21, the first flexible pipe 22 after cooling, after get tracheae 2 and get gas from preprocessor 1 after, gas enters pressure transducer 4 through the second steel pipe 31, the second flexible pipe 32 after cooling, and 4 pairs of gas pressure difference of pressure transducer are measured.
Although the present invention is described in conjunction with above embodiment, but the present invention is not limited to above-described embodiment, and only being subjected to the restriction of claims, those of ordinary skills can easily make amendment to it and change, but do not leave essence design of the present invention and scope.
Claims (7)
1. automobile preprocessor pressure difference measuring system comprises:
Before get tracheae, comprise the first steel pipe, the first flexible pipe;
After get tracheae, comprise the second steel pipe, the second flexible pipe;
Pressure transducer;
The first steel pipe one end of getting tracheae before described is connected with described preprocessor inlet end, and the other end is connected with described the first flexible pipe, and the described first flexible pipe the other end is connected with described pressure transducer; The second steel pipe one end of getting tracheae after described is connected with described preprocessor exhaust end, and the other end is connected with described the second flexible pipe, and the described second flexible pipe the other end is connected with described pressure transducer.
2. automobile preprocessor pressure difference measuring system according to claim 1 is characterized in that, described the first steel pipe be connected steel pipe and at an end that is connected with described preprocessor the section of being inclined upwardly arranged.
3. automobile preprocessor pressure difference measuring system according to claim 1 is characterized in that, described the first flexible pipe, the second flexible pipe are heat-resistant hose.
4. automobile preprocessor pressure difference measuring system according to claim 1 is characterized in that, described the first steel pipe, the second steel pipe adopt conic nut to be connected with described preprocessor interface.
5. automobile preprocessor pressure difference measuring system according to claim 1, it is characterized in that, the end that described the first steel pipe is connected with described the first flexible pipe is round as a ball bulge structure, and/or described the second steel pipe is round as a ball bulge structure at an end that is connected with described the second flexible pipe.
6. automobile preprocessor pressure difference measuring system according to claim 1 is characterized in that, described the first steel pipe and the first flexible pipe joint are fixedly clamped with pipe clamp, and/or described the second steel pipe and the second flexible pipe joint are fixedly clamped with pipe clamp.
7. automobile preprocessor pressure difference measuring system according to claim 1 is characterized in that having connection bracket between described the first steel pipe and the second steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103612369A CN102852610A (en) | 2012-09-25 | 2012-09-25 | Pressure difference measuring system of automobile postprocessor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103612369A CN102852610A (en) | 2012-09-25 | 2012-09-25 | Pressure difference measuring system of automobile postprocessor |
Publications (1)
| Publication Number | Publication Date |
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| CN102852610A true CN102852610A (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2012103612369A Pending CN102852610A (en) | 2012-09-25 | 2012-09-25 | Pressure difference measuring system of automobile postprocessor |
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| CN (1) | CN102852610A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863796A (en) * | 2016-05-18 | 2016-08-17 | 安徽江淮汽车股份有限公司 | Post-processing sensor module mounting structure |
| CN105992863A (en) * | 2014-03-19 | 2016-10-05 | 洋马株式会社 | Engine device |
| CN107035572A (en) * | 2016-02-03 | 2017-08-11 | 东风神宇车辆有限公司 | Pressure difference sensing device assembly is used in a kind of commercial car post processing |
| CN107939502A (en) * | 2017-11-03 | 2018-04-20 | 重庆长安汽车股份有限公司 | A kind of pipeline structure for automobile grain catcher |
| CN109630251A (en) * | 2018-11-21 | 2019-04-16 | 东风汽车集团有限公司 | One kind being used for the anti-freeze pressure difference pipe structure of exhaust system and exhaust system, automobile |
| CN111928992A (en) * | 2020-07-22 | 2020-11-13 | 北京理工大学 | Device for testing high-temperature pressure for burning test bomb |
| CN114810303A (en) * | 2022-03-23 | 2022-07-29 | 潍柴动力股份有限公司 | Method and system for detecting air leakage of rear air intake pipe of DPF pressure difference sensor |
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| CN202420928U (en) * | 2011-11-21 | 2012-09-05 | 广州市福立分析仪器有限公司 | Sampling flow rate corrector of flue gas analyzer |
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2012
- 2012-09-25 CN CN2012103612369A patent/CN102852610A/en active Pending
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| EP1598533A2 (en) * | 2004-05-17 | 2005-11-23 | Renault s.a.s. | Device for measuring pressure before and after a particle filter in an exhaust gas line |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105992863A (en) * | 2014-03-19 | 2016-10-05 | 洋马株式会社 | Engine device |
| EP3121399A4 (en) * | 2014-03-19 | 2017-12-13 | Yanmar Co., Ltd. | Engine device |
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| CN105992863B (en) * | 2014-03-19 | 2019-02-19 | 洋马株式会社 | Engine device |
| CN107035572A (en) * | 2016-02-03 | 2017-08-11 | 东风神宇车辆有限公司 | Pressure difference sensing device assembly is used in a kind of commercial car post processing |
| CN105863796A (en) * | 2016-05-18 | 2016-08-17 | 安徽江淮汽车股份有限公司 | Post-processing sensor module mounting structure |
| CN107939502A (en) * | 2017-11-03 | 2018-04-20 | 重庆长安汽车股份有限公司 | A kind of pipeline structure for automobile grain catcher |
| CN109630251A (en) * | 2018-11-21 | 2019-04-16 | 东风汽车集团有限公司 | One kind being used for the anti-freeze pressure difference pipe structure of exhaust system and exhaust system, automobile |
| CN111928992A (en) * | 2020-07-22 | 2020-11-13 | 北京理工大学 | Device for testing high-temperature pressure for burning test bomb |
| CN114810303A (en) * | 2022-03-23 | 2022-07-29 | 潍柴动力股份有限公司 | Method and system for detecting air leakage of rear air intake pipe of DPF pressure difference sensor |
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Application publication date: 20130102 |