CN101063419A - Exhaust gas discharging control system - Google Patents
Exhaust gas discharging control system Download PDFInfo
- Publication number
- CN101063419A CN101063419A CNA200710102454XA CN200710102454A CN101063419A CN 101063419 A CN101063419 A CN 101063419A CN A200710102454X A CNA200710102454X A CN A200710102454XA CN 200710102454 A CN200710102454 A CN 200710102454A CN 101063419 A CN101063419 A CN 101063419A
- Authority
- CN
- China
- Prior art keywords
- control system
- exhaust gas
- discharging control
- gas discharging
- exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/06—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a temperature sensor
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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
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
An exhaust emission control system comprises: an exhaust emission control system set along the exhaust gas passage and suitable for controlling the exhausted gas from the engine; casing suitable for accepting the exhaust emission control unit and having the casing with the intaking portion and exhausting portion, in which the intaking portion comprises intaking mouth offsets from the axial center of the casing and the exhausting portion comprises the exhausting mouth which is placed opposited to the intaking mouth relative to the axial center and opposited to the intaking mouth relative to the exhaust emission control unit; and sensor for operably measuring the state in the casing. The exhaust portion comprises the recess at one side opposite to the exhaust mouth relative to the axial center. The sensor is installed in the recess portion.
Description
Technical field
The present invention relates to a kind of waste gas (exhaust) emission control systems.
Background technique
In recent years, consider the influence to environment such as the toxic emission of discharging from the motor of automobile etc., in order to purify or control the toxic emission from motor, various types of exhaust gas discharging control systems are installed on the automobile.In these exhaust gas discharging control systems, the way of accepting extensively is at the inner oxygen sensor that is used to measure the temperature transducer of temperature or is used to measure oxygen concentration of installing of exhaust gas discharging control system, thereby measures the state in the exhaust gas discharging control system.
In exhaust gas discharging control system inside, different near part and the temperature and the oxygen concentration between diametric each external lateral portion in the diametric center portion that is considered to be exposed to maximum temperature, therefore, for example, when mounting temperature sensor on exhaust gas discharging control system, temperature transducer is required to be mounted to and makes measurement section be arranged on that temperature is considered to the highest diametric center in the as close as possible exhaust gas discharging control system.JP-A-6-101516 has disclosed the example of such exhaust gas discharging control system.
But, in the sensor fixing structure of the exhaust gas discharging control system of the routine that in JP-A-6-101516, discloses, adopted being positioned at of recessed portion along the part structure further more outstanding of the upstream-most position of the relevant recessed portion of exhaust-gas flow than the measurement section of temperature transducer, Tu Chu this part has upset flowing of waste gas and has caused a problem like this, that is, near the measured precision of the state of this part the center of the exhaust gas discharging control system inner diameter direction that shows most severe condition aspect the temperature reduces or the response of sensor worsens.In addition, upset the state of sensor mounting point and therefore upset the numerical value of measuring under the state in multilated at the eddy current that projection produces.
Especially, be used for adsorbing in the exhaust gas discharging control system of DPF (diesel particulate filter DieselParticulate Filter) of particulate matter of toxic emission in installation, can't accurately measure when being removed in or burning oxidized under near the situation of the temperature the DPF center, thereby can cause that near the DPF center temperature is elevated to is higher than its thermal resistance or thermal capacitance limit temperature causes the malfunctioning danger of DPF when the particulate matter that is adsorbed.
In addition, though the possibility of the burned thereby forced regeneration that is removed of the soot that carries out the DPF inner accumulated can be arranged in DPF, the quantity of the soot that gathers is calculated based on temperature that is recorded by temperature transducer or exhaust gas pressure.Therefore, be lower than under the situation of true temperature, might cause the actual situation of gathering quantity greater than calculated value in the measurement temperature, and when this situation really takes place, the soot that gathers is all burnings simultaneously, and this will cause the temperature of the thermal resistance limiting temperature that is higher than DPF, the danger that causes DPF to be melted.
Summary of the invention
Therefore target of the present invention provides a kind of exhaust gas discharging control system, and this exhaust gas discharging control system can be measured the state of a part at its diametric center of formation of this system.
In order to reach this target, according to the invention provides a kind of exhaust gas discharging control system, this exhaust gas discharging control system comprises:
Along the exhaust steam passage setting of motor and be suitable for controlling waste gas discharge control unit from the waste gas of engine emission;
Be suitable for holding waste gas discharge control unit therein and have air input part and the shell of exhaust portion, wherein air input part comprises the suction port that is provided with from the such mode of the axial centre of shell skew, and exhaust portion comprises with respect to axial centre and is arranged on a side relative with suction port and is arranged on the relief opening of a side relative with suction port with respect to waste gas discharge control unit; With
The sensor of the state in the shell is measured on operability ground, wherein
Exhaust portion comprises the recessed portion that is arranged on a side relative with relief opening with respect to axial centre, and
Sensor is installed in this recessed portion.
Waste gas can flow on the direction from the suction port to the relief opening, and sensor can have measurement section, and the measurement section of sensor can be arranged on the upstream side that this direction is recessed on part at least.
Measurement section can be measured the state of the axial centre of shell.
Sensor can comprise the temperature transducer that is used to measure temperature.
Waste gas discharge control unit can comprise and is used to remove the DPF that is included in the particulate matter in the waste gas.
Suction port can be arranged on the upside of axial centre, and relief opening can be arranged on the downside of axial centre.
Waste gas can flow on the direction from the suction port to the relief opening.Air input part can have the downstream side that is arranged on suction port on this direction and be arranged on the first portion of the upside of axial centre, air input part can have the downstream side that is arranged on suction port on this direction and be arranged on the second portion of the downside of axial centre, and the inclination of second portion can be greater than the inclination of first portion.
Description of drawings
Fig. 1 is the sectional drawing of exhaust gas discharging control system according to an embodiment of the invention;
Fig. 2 is the end elevation of exhaust gas discharging control system according to an embodiment of the invention;
Fig. 3 is the sectional drawing of the part of exhaust gas discharging control system according to an embodiment of the invention;
Fig. 4 is the planimetric map of the described part of exhaust gas discharging control system according to an embodiment of the invention;
Fig. 5 is the plotted curve that shows the measurement temperature that is associated with time lapse in the process of the forced regeneration that takes place in exhaust gas discharging control system according to an embodiment of the invention and the conventional exhaust gas discharging control system.
Embodiment
Embodiment according to waste gas discharge control unit of the present invention will be described referring to figs. 1 to Fig. 5.
Hereinafter, will be described compactly according to the exhaust gas discharging control system of present embodiment.Note, though described the exhaust gas discharging control system that utilizes DPF (Diesel Particulate Filter diesel particulate filter) in the various exhaust gas discharging control systems in the present embodiment, but this exhaust gas discharging control system can be applied in other exhaust gas discharging control system outside this system, comprise and for example utilize three-way catalyst, the exhaust gas discharging control system of NOx absorption etc.In addition,, non-this type of the sensor of other types can be installed also, comprise for example oxygen sensor, pressure transducer etc. though as sensor the temperature transducer that is used to measure temperature has been installed in the present embodiment.
Sectional drawing according to the exhaust gas discharging control system of present embodiment is presented among Fig. 1.As shown in Figure 1, the shell of exhaust gas discharging control system 1 comprises the preceding tapered portion 11 (air input part) of setting from the suction port 10 of motor inspiration waste gas, the cylinder blanket 13 of DPF (waste gas discharge control unit) is installed and the back tapered portion 15 (exhaust portion) of the relief opening 14 of discharging waste gas is set.That is, the preceding tapered portion 11 that constitutes the part of shell 13 is formed on the upstream side of shell 13, and the back tapered portion 15 of the part of formation shell 13 is arranged on the downstream side of shell 13.
Before the waste gas inlet 10 of tapered portion 11 be arranged in the end, upstream of the cylinder part (hereinafter be called before taper cylinder part 16) of exhaust steam passage on exhaust gas flow direction that passes through from the waste gas of engine emission.Should before taper cylinder part 16 be arranged on than the center (axial centre) of shell 13 more upwards on the position of skew.Before the part in the downstream side that on exhaust gas flow direction, is positioned at inner cone shape cylinder part 16 of tapered portion 11 have the shape that broadens gradually towards exhaust gas flow direction, and the inclination that is positioned at a part more downward than axial centre of loudspeaker oral area is greater than being positioned at than axial centre more upwards promptly in the inclination of the part of a side identical with the position at suction port 10 places.In addition, the Waste gas outlet 14 of back tapered portion 15 is positioned at the cylinder part downstream end of (being called back tapered cylinder body 17 hereinafter).
Back tapered cylinder body 17 is arranged on the position that the center (axial centre) than shell more offsets downward, promptly on a side relative with respect to axial centre and preceding taper cylinder part 16.And then recessed portion 15b is formed on the position of tapered cylinder body 17 tops, back on the tapered portion 15 of back, and the temperature transducer 18 of temperature that is used for measuring the center of DPF 12 is installed in this recessed portion 15b.On exhaust gas flow direction, this recessed portion 15b is in the face of the mild part (and suction port 10) of inclination of preceding tapered portion 11, and relief opening 14 is in the face of the precipitous part of inclination of preceding tapered portion 11.Lead 19 is drawn from temperature transducer 18, and this lead 19 is connected to ECU (not shown) or like.The mounting structure of this temperature transducer 18 will continue to describe in the back.
The end elevation of observing from its exhaust port side according to the exhaust gas discharging control system of present embodiment shows among Fig. 2.As shown in Figure 2, when when exhaust port side is observed, the position that relief opening is set is arranged on a side relative with suction port 10 with respect to the position shown in the dotted line that suction port 10 is set with reference to the diametric basically center of shell.
By this way, suction port 10 is positioned at upper-right position when relief opening 14 ends are seen though adopted in the present embodiment, and relief opening 14 is positioned at the structure of position, lower-left, but the position between suction port 10 and the relief opening 14 relation can satisfy suction port 10 and relief opening 14 are positioned at the position relative to each other with reference to the diametric basically center (axial centre) of shell 13 relation.That is, the mounting point of suction port 10 and relief opening 14 can be positioned at horizontal or vertical position relative to each other.
Next structure according to the part of the exhaust gas discharging control system of present embodiment will be described.Sectional drawing according to the part of the exhaust gas discharging control system of present embodiment is presented among Fig. 3.Notice that Fig. 3 has shown near the joint between shell shown in Figure 1 13 and the back tapered portion 15 a part with the form of amplifying.
As shown in Figure 3, the temperature transducer 18 that is used for measuring near the temperature the diametric(al) center of DFP 12 is installed among the recessed portion 15b that tapered cylinder bodies 17 tops, back tapered portion 15 back form diametric center with reference to shell 13 and is in a side relative with relief opening 14.In temperature transducer 18, the far-end that is positioned at exhaust gas discharging control system 1 inside is the measurement section 18a of actual measurement temperature.
Fig. 4 shows the planimetric map according to the part of the exhaust gas discharging control system of present embodiment.As shown in Fig. 2 and 4, the bottom of mounting temperature sensor 18 constitutes circular recessed portion 15.As shown in Figure 3, see that from exhaust gas flow direction it is the downstream side of the measurement section 18a of temperature transducer 18 at least that a part of 15c of the recessed portion 15b that is positioned at the upstream-most position is located on the exhaust gas flow direction.That is, because recessed portion 15b is not positioned at the upstream of measurement section 18a, thus there is not measurement section 18a to be subjected to the situation of the influence of exhaust flow, otherwise this measurement section 18a will be subjected to the influence of the structure of recessed portion 15b.Therefore, measurement section 18a can accurately measure DPF inside state and without any postponing (or good sensitivity is arranged).
Fig. 3 has shown the temperature distribution state according to the exhaust gas discharging control system of present embodiment.The center of DPF 12 constitutes highest temperature region, also shows the temperature contrast that begins from the center among the figure.As can be known from temperature distribution shown in Figure 3, sensor fixing structure makes measurement section 18a arrive temperature as its temperature and described center almost not have-20 of the zone that changes to spend in the zones, thereby measurement section 18a can accurately measure near the temperature in zone, the diametric center of DPF 12.
Comprise according to the exhaust gas discharging control system of present embodiment and to be used to remove the regeneration unit that is adsorbed on the particulate matter in the DPF 12.Because various regeneration units are widely known by the people, so this paper is not described in greater detail, thereby but exists and be used to heat the heating unit of DPF and be used for providing the fuel burning regeneration method of the particulate matter of absorption therein to DPF.
Fig. 5 has shown the measurement temperature that is associated with time lapse when removing the particulate matter that adsorbs in the DPF12 by burn (hereinafter being called regeneration) according in the exhaust gas discharging control system of present embodiment and the conventional exhaust gas discharging control system.As shown in Figure 5, when regenerating, in the exhaust gas discharging control system of routine, shown in A, measure temperature and be significantly less than actual value, and further, temperature displayed is shown as over time among the figure does not have the obtuse angle of spike shape, and the fact be the variation of actual generation is the shape that has spike, and the generation of the peak value of temperature shown in A is than the true temperature in the DPF 12 and slow by the temperature curve shown in the B.
Compare with the exhaust gas discharging control system of routine, exhaust gas discharging control system by present embodiment, as by shown in the curve shown in the B, measure near the true temperature in diametric center that temperature is substantially equal to DPF 12 (with reference to figure 1), and further, temperature has shown and the basic over time similar shapes of the temperature of reality over time.That is, this exhaust gas discharging control system can accurately be measured the temperature at DPF 12 centers, and without any time lag.
By this way, exhaust gas discharging control system according to present embodiment, by comprising DPF 12, the shell 13 that holds DPF12 therein, constitute the part of shell 12 and have the air input part of being arranged to be in from the suction port 10 of the position of the diametric off-centring of shell 13 11, be positioned at and cross over DPF 12 end relative with a part that constitutes shell 13 and exhaust portion 15 with the relief opening 14 that is arranged on a side relative with a side of location suction port 10 with respect to the diametric center of DPF 12 with an end of location suction port 10, be arranged on the exhaust portion 15 and be formed on respect to the recessed portion 15 on the side relative of the diametric center of exhaust gas discharging control system 1 with the side that relief opening 14 is set, temperature transducer 18 with the state that is used to measure shell 13 inside, present in the shell 13 of exhaust gas discharging control system 1 wherein that the temperature of the part of most severe condition can accurately be measured and without any delay, thereby can prevent in advance that the DPF 12 that is installed in exhaust gas discharging control system 1 inside from breaking down.
In addition, the measurement section 18a of temperature transducer 18 is positioned at along exhaust steam passage than the part of the upstream-most position that is positioned at recessed portion 15b of the recessed portion 15b position of upstream more, thereby because measurement section 18a is subjected to the minimum that influences of the exhaust flow that limited by recessed portion 15b, the temperature that is installed in the DPF 12 in the shell 13 can accurately be measured and without any delay, thereby can prevent in advance that DPF 12 from breaking down.
In addition, measurement section 18a can accurately measure the DPF 12 that is installed in exhaust gas discharging control system 1 inside diametric center temperature and without any delay, thereby can prevent in advance that DPF 12 from breaking down.The shape of shell 13 can be rectangular shape, elliptical shape etc.
Though the shape of shell 13 is described to cylindrically in the above-described embodiments, its shape is not necessarily limited to cylindrical.
Also requirement is for the benefit of priority of this application based on the 2006-124731 Japanese patent application of applying on April 28th, 2006 for the application, and the full content of this application is incorporated by reference herein.
Claims (7)
1, a kind of exhaust gas discharging control system is characterized in that, described exhaust gas discharging control system comprises:
Waste gas discharge control unit, described waste gas discharge control unit be along the exhaust steam passage setting of motor, and be suitable for controlling the waste gas from engine emission;
Shell, described shell is suitable for holding therein waste gas discharge control unit, and have air input part and exhaust portion, wherein air input part comprises the suction port that is provided with from the such mode of the axial centre of shell skew, comprises with respect to described axial centre with exhaust portion being arranged on a side relative with suction port and being arranged on the relief opening of a side relative with suction port with respect to waste gas discharge control unit; With
Sensor, described sensor can be operated the state of measuring in the shell, wherein
Exhaust portion comprises the recessed portion that is arranged on a side relative with relief opening with respect to described axial centre, and
Described sensor is installed in the female part.
2, exhaust gas discharging control system as claimed in claim 1 is characterized in that,
Flow on the direction of waste gas edge from the suction port to the relief opening,
Sensor has measurement section, and
At least the measurement section of sensor is arranged on the upstream side that described direction is recessed on part.
3, exhaust gas discharging control system as claimed in claim 2 is characterized in that,
Described measurement section is measured the state of the described axial centre of described shell.
4, exhaust gas discharging control system as claimed in claim 1 is characterized in that,
Described sensor comprises the temperature transducer that is used to measure temperature.
5, exhaust gas discharging control system as claimed in claim 1 is characterized in that,
Waste gas discharge control unit comprises the DPF that is used for removing the particulate matter that is included in waste gas.
6, exhaust gas discharging control system as claimed in claim 1 is characterized in that,
Described suction port is arranged on the upside of described axial centre, and
Described relief opening is arranged on the downside of described axial centre.
7, exhaust gas discharging control system as claimed in claim 1 is characterized in that,
Waste gas flows along the direction from described suction port to described relief opening,
Described air input part has the first portion that is arranged on the downstream side of suction port and is arranged on the upside of described axial centre on described direction,
Described air input part has the downstream side that is arranged on suction port on described direction and is arranged on the second portion of the downside of described axial centre, and
The inclination of described second portion is greater than the inclination of described first portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006124731 | 2006-04-28 | ||
| JP2006-124731 | 2006-04-28 | ||
| JP2006124731A JP4240056B2 (en) | 2006-04-28 | 2006-04-28 | Exhaust gas purification device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101063419A true CN101063419A (en) | 2007-10-31 |
| CN101063419B CN101063419B (en) | 2014-06-04 |
Family
ID=38565069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710102454.XA Expired - Fee Related CN101063419B (en) | 2006-04-28 | 2007-04-28 | Exhaust gas discharging control system |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4240056B2 (en) |
| CN (1) | CN101063419B (en) |
| DE (1) | DE102007020040A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869219A (en) * | 2017-12-01 | 2019-06-11 | 埃贝斯佩歇排气技术有限责任两合公司 | Housing connection element |
| CN112282900A (en) * | 2019-07-25 | 2021-01-29 | 康明斯排放处理公司 | Exhaust gas aftertreatment system |
| CN113323745A (en) * | 2020-02-28 | 2021-08-31 | 双叶产业株式会社 | Boss for sensor and mounting structure of boss for sensor |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5569667B2 (en) * | 2008-05-01 | 2014-08-13 | 三菱ふそうトラック・バス株式会社 | Exhaust purification device |
| JP5382366B2 (en) * | 2010-10-01 | 2014-01-08 | 三菱自動車工業株式会社 | Exhaust gas purification device for internal combustion engine |
| FR2990995A1 (en) * | 2012-05-24 | 2013-11-29 | Peugeot Citroen Automobiles Sa | PARTICLE FILTER WITH AN ABNORMAL HEAT DETECTION SENSOR AND DETECTION SENSOR THEREFOR |
-
2006
- 2006-04-28 JP JP2006124731A patent/JP4240056B2/en not_active Expired - Fee Related
-
2007
- 2007-04-27 DE DE102007020040A patent/DE102007020040A1/en not_active Ceased
- 2007-04-28 CN CN200710102454.XA patent/CN101063419B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869219A (en) * | 2017-12-01 | 2019-06-11 | 埃贝斯佩歇排气技术有限责任两合公司 | Housing connection element |
| US10962446B2 (en) | 2017-12-01 | 2021-03-30 | Eberspächer Exhaust Technology GmbH & Co. KG | Housing connection element |
| CN112282900A (en) * | 2019-07-25 | 2021-01-29 | 康明斯排放处理公司 | Exhaust gas aftertreatment system |
| CN113323745A (en) * | 2020-02-28 | 2021-08-31 | 双叶产业株式会社 | Boss for sensor and mounting structure of boss for sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101063419B (en) | 2014-06-04 |
| JP4240056B2 (en) | 2009-03-18 |
| JP2007297930A (en) | 2007-11-15 |
| DE102007020040A1 (en) | 2007-11-08 |
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| C14 | Grant of patent or utility model | ||
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Address after: No. 21, No. 3, Dingmu, No. 1, Toshiba, Tokyo, Japan Patentee after: Mitsubishi Jidosha Kogyo Kabushiki Kaisha Address before: 33-8, CHIGO 5, Tokyo, Japan Patentee before: Mitsubishi Jidosha Kogyo Kabushiki Kaisha |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20210428 |