CN104279045A - Automobile exhaust system hot end support - Google Patents
Automobile exhaust system hot end support Download PDFInfo
- Publication number
- CN104279045A CN104279045A CN201310287445.8A CN201310287445A CN104279045A CN 104279045 A CN104279045 A CN 104279045A CN 201310287445 A CN201310287445 A CN 201310287445A CN 104279045 A CN104279045 A CN 104279045A
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- China
- Prior art keywords
- support
- rack body
- bolt
- automobile exhaust
- exhaust system
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- 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.)
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Abstract
An automobile exhaust system hot end support is used for being connected with a three-way catalyst shell. The automobile exhaust system hot end support comprises a support body, a strap and a fastening bolt, wherein the strap surrounds the three-way catalyst shell to be connected with the fastening bolt into a hoop, and the fastening bolt penetrates through the support body to be connected with the two ends of the strap so that the support body can be fixed to the three-way catalyst shell. Due to the fact that the support is directly connected with the three-way catalyst shell, the problem that the space in an engine cabin is small is effectively avoided. Due to the fact that the support is directly connected to the three-way catalyst shell and is very close to an engine cylinder block, the rigidity of the whole system is effectively improved, the first-order frequency of the system is increased to be higher than 200 Hz, resonance of an engine within 6000 RPM is avoided, and the fatigue life of the whole system is effectively prolonged.
Description
Technical field
The present invention relates to a kind of testing apparatus, particularly a kind of automobile exhaust system hot junction support.
Background technique
Traditional support is all the mode of welding adopting support and catalyst converter housing, and welding heat is easy to the liner of destruction ternary catalyzing unit, causes product rejection rate higher.Due to narrow space in engine compartment, position of mounting hole limits, rack arrangement difficulty.Support is fixedly connected with ternary catalyzing unit, and the tolerance of system accumulation cannot regulate, and causes prestressed excessive, reduces the vibrating fatigue life-span of part.Due to being fixedly connected with between support with housing, the thermal stress that system thermal expansion causes can not get release, and thermal fatigue life can reduce.
Summary of the invention
Object of the present invention is exactly to overcome above-mentioned the deficiencies in the prior art, provides a kind of novel support scheme.The vibration of balance sysmte and thermal expansion, carry the fatigue life of component; The tolerance of bucking-out system accumulation, reduces prestressed; Optimization system structural design, is convenient to component and installs flexibly in narrow and small engine compartment.
The object of the present invention is achieved like this: a kind of automobile exhaust system hot junction support, for being connected with ternary catalyzing unit housing, comprises rack body; Also comprise band and clamping bolt, band connects into clip around ternary catalyzing unit housing and clamping bolt, and clamping bolt is connected with the two ends of band through rack body, is fixed on by rack body on ternary catalyzing unit housing.
Described rack body comprises an arc junction surface and an empennage, a perforation is provided with near the part of arc junction surface at empennage, the arc junction surface of rack body is fitted on ternary catalyzing unit housing, and described clamping bolt is connected with the two ends of band through this perforation.
The empennage of described rack body is provided with the bolt hole for being connected with motor, and rack body is connected with motor by connecting bolt, and the diameter of described bolt hole is greater than the diameter listened and state connecting bolt.
The two ends of described band are respectively equipped with connecting ring, and the cap end of described clamping bolt is arranged in the connecting ring of one end, and the bolt end of described clamping bolt is fastening by band by nut through the connecting ring of the other end.
Compared with prior art, the present invention has the following advantages:
One, tolerance balancing: can relative sliding between support and ternary catalyzing unit housing, the tolerance of Y-direction can be compensated, the diameter of the link bolt hole of support and motor is greater than the diameter of connecting bolt, can the tolerance of compensating Z-direction, reduce the prestressed between support and ternary catalyzing unit housing, improve the fatigue life of component.
Two, the stress that produces of balance vibration and thermal expansion: this kind of support Design, the ratio of rigidity of system is higher, and first order resonance frequency brings up to more than 200HZ, avoids resonance; Owing to have employed clip connected between support and ternary catalyzing unit, when thermal stress is to certain degree, will relative sliding be produced between ternary catalyzing unit and support, effectively releasing heat stress, improve thermal fatigue life.
Three, reduce the destruction to liner: support and ternary catalyzing unit housing adopt clip connected, avoid welding of housing and support, thus avoid huge heat that welding produces to the destruction of catalyst gasket.
Four, be convenient to install: before component are installed, a less moment of torsion pretension can be added by clip between support and ternary catalyzing unit housing, first tighten the bolt of hot junction and turbosupercharger, then tighten the attachment hole between support and motor, finally tighten support and ternary catalyzing unit again.
Accompanying drawing explanation
Fig. 1, Fig. 2 are that the linkage structure schematic representation of automobile exhaust system hot junction support of the present invention and ternary catalyzing unit is intended to.
Embodiment
See Fig. 1, Fig. 2, automobile exhaust system hot junction of the present invention support, for being connected with ternary catalyzing unit housing 1, comprise rack body 2, band 3 and clamping bolt 4, band 3 connects into clip around ternary catalyzing unit housing 1 and clamping bolt 4, clamping bolt 4 is connected with the two ends of band through rack body 2, is fixed on by rack body on ternary catalyzing unit housing.
Rack body 2 of the present invention comprises an arc junction surface 21 and an empennage 22, a perforation 23 is provided with near the part of arc junction surface at empennage, the arc junction surface of rack body is fitted on ternary catalyzing unit housing, and described clamping bolt is connected with the two ends of band through this perforation.
The empennage 22 of rack body 2 of the present invention is provided with the bolt hole 24 for being connected with motor, and rack body is connected with motor by connecting bolt, and the diameter of bolt hole is greater than the diameter of connecting bolt.
The two ends of band 3 of the present invention are respectively equipped with connecting ring, and the cap end of clamping bolt is arranged in the connecting ring of one end, and the bolt end of clamping bolt is fastening by band by nut through the connecting ring of the other end.
The present invention, in the middle of installation process, first can be connected the inlet end of ternary catalyzing unit with the outlet of turbosupercharger.Less moment of torsion pretension is adopted between support and ternary catalyzing unit housing, less moment of torsion pretension is adopted between support and motor, after air inlet and the position bolt tightening of giving vent to anger, by regulating the relative position between support and ternary catalyzing unit housing to carry out tolerance balancing, reduce stress.
Rack body 2 of the present invention is closely connected with ternary catalyzing unit housing 1 by clip, and radian and the housing of rack body 2 and housing joint are consistent, ensures that support can be combined closely with housing.The impacting force between support and catalyst converter housing is controlled by the torque regulating clip to tighten support; The cumulative limit compensating installation process by regulating the relative position between support and catalyst converter housing and produces, reduction prestressed.
The bolt hole 24 that support is connected with motor about 2mm larger than the diameter of connecting bolt, is convenient to compensate cumulative limit when support and motor are installed, reduction prestressed herein.
Claims (4)
1. an automobile exhaust system hot junction support, for being connected with ternary catalyzing unit housing, comprises rack body; It is characterized in that: also comprise band and clamping bolt, band connects into clip around ternary catalyzing unit housing and clamping bolt, and clamping bolt is connected with the two ends of band through rack body, is fixed on by rack body on ternary catalyzing unit housing.
2. automobile exhaust system hot junction according to claim 1 support, it is characterized in that: described rack body comprises an arc junction surface and an empennage, a perforation is provided with near the part of arc junction surface at empennage, the arc junction surface of rack body is fitted on ternary catalyzing unit housing, and described clamping bolt is connected with the two ends of band through this perforation.
3. automobile exhaust system hot junction according to claim 1 support, it is characterized in that: the empennage of described rack body is provided with the bolt hole for being connected with motor, rack body is connected with motor by connecting bolt, and the diameter of described bolt hole is greater than the diameter of described connecting bolt.
4. automobile exhaust system hot junction according to claim 1 support, it is characterized in that: the two ends of described band are respectively equipped with connecting ring, the cap end of described clamping bolt is arranged in the connecting ring of one end, and the bolt end of described clamping bolt is fastening by band by nut through the connecting ring of the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310287445.8A CN104279045B (en) | 2013-07-09 | 2013-07-09 | Automobile exhaust system hot junction support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310287445.8A CN104279045B (en) | 2013-07-09 | 2013-07-09 | Automobile exhaust system hot junction support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104279045A true CN104279045A (en) | 2015-01-14 |
| CN104279045B CN104279045B (en) | 2016-08-24 |
Family
ID=52254315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310287445.8A Active CN104279045B (en) | 2013-07-09 | 2013-07-09 | Automobile exhaust system hot junction support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104279045B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388250A (en) * | 2018-04-18 | 2019-10-29 | 通用汽车环球科技运作有限责任公司 | Autoregistration installation part |
| CN113984391A (en) * | 2021-10-25 | 2022-01-28 | 重庆长安汽车股份有限公司 | Mounting structure and bench test device of torsional vibration sensor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4640536A (en) * | 1986-02-27 | 1987-02-03 | Nelson Industries, Inc. | Tube clamp assembly |
| JP2009179305A (en) * | 2008-02-01 | 2009-08-13 | Kawasaki Heavy Ind Ltd | Vehicular clamp device |
| CN201963381U (en) * | 2011-02-11 | 2011-09-07 | 芜湖杰锋汽车动力系统有限公司 | Automobile exhaust pipe connecting structure |
| CN202690192U (en) * | 2012-06-06 | 2013-01-23 | 浙江吉利汽车研究院有限公司杭州分公司 | Mounting structure for three-way catalytic converter of engine |
| CN203394621U (en) * | 2013-07-09 | 2014-01-15 | 上海天纳克排气系统有限公司 | Hot-end bracket for automobile exhaust system |
-
2013
- 2013-07-09 CN CN201310287445.8A patent/CN104279045B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4640536A (en) * | 1986-02-27 | 1987-02-03 | Nelson Industries, Inc. | Tube clamp assembly |
| JP2009179305A (en) * | 2008-02-01 | 2009-08-13 | Kawasaki Heavy Ind Ltd | Vehicular clamp device |
| CN201963381U (en) * | 2011-02-11 | 2011-09-07 | 芜湖杰锋汽车动力系统有限公司 | Automobile exhaust pipe connecting structure |
| CN202690192U (en) * | 2012-06-06 | 2013-01-23 | 浙江吉利汽车研究院有限公司杭州分公司 | Mounting structure for three-way catalytic converter of engine |
| CN203394621U (en) * | 2013-07-09 | 2014-01-15 | 上海天纳克排气系统有限公司 | Hot-end bracket for automobile exhaust system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388250A (en) * | 2018-04-18 | 2019-10-29 | 通用汽车环球科技运作有限责任公司 | Autoregistration installation part |
| CN113984391A (en) * | 2021-10-25 | 2022-01-28 | 重庆长安汽车股份有限公司 | Mounting structure and bench test device of torsional vibration sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104279045B (en) | 2016-08-24 |
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