CN212803369U

CN212803369U - Three way catalyst converter fixing device and vehicle

Info

Publication number: CN212803369U
Application number: CN202021827531.5U
Authority: CN
Inventors: 王贺齐; 邵萍; 吴晓林
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely New Energy Commercial Vehicle Group Co Ltd; Geely Sichuan Commercial Vehicle Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely New Energy Commercial Vehicle Group Co Ltd; Geely Sichuan Commercial Vehicle Co Ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-03-26
Anticipated expiration: 2030-08-27

Abstract

The utility model provides a three way catalyst converter fixing device and vehicle. The three-way catalyst fixing device comprises a first fixing support and a second fixing support connected with the first fixing support, wherein the first fixing support is connected with a three-way catalyst body of a vehicle, and the second fixing support is connected with a generator body of a range extender of the vehicle. Through setting up first fixed bolster and second fixed bolster between three way catalyst converter and increase journey ware generator to couple together three way catalyst converter and increase journey ware generator, realized fixing the purpose on increasing journey ware generator with three way catalyst converter, and, this three way catalyst converter fixing device structural design is simple reasonable, this project organization is simple to the cost, the influence of weight is ignored, through modal analysis, three way catalyst converter fixing device and three way catalyst converter resonant frequency are 174Hz, be greater than engine excitation frequency 150Hz, thereby engine excitation frequency has been avoided, and then the resonant failure risk of three way catalyst converter has been reduced.

Description

Three way catalyst converter fixing device and vehicle

Technical Field

The utility model relates to the technical field of vehicles, especially, relate to a three way catalyst converter fixing device and vehicle.

Background

With the increasing of the national requirements for the fuel consumption of the whole vehicle, the range extender is gradually carried on the whole vehicle due to the advantage of low fuel consumption. The three-way catalytic converter is used as one part of the range extender and is an indispensable part of the range extender meeting national emission requirements. The three-way catalyst is arranged at the outlet of a turbocharger of the engine and is connected with an exhaust system on the whole vehicle through a corrugated pipe. In order to reduce the excitation of the engine to the three-way catalyst and the bellows, a fixing device is required to fix the three-way catalyst to the range extender. Through optimizing the structure and the fixed mode of the fixing device, the resonance frequency of the exhaust hot end is improved, and the excitation frequency of the engine is avoided, so that the risk of resonance failure of the three-way catalyst is reduced, the reliability of the three-way catalyst is improved, and the safety and the emission performance of the whole vehicle during running are improved.

The traditional gasoline power assembly consists of an engine and a gearbox, wherein some three-way catalytic converters are fixed on the engine, and some three-way catalytic converters are fixed on the gearbox. The range extender is composed of an engine and a generator, the three-way catalyst can only be fixed on the engine or the generator, the engine of the range extender in the prior art has no mounting point for fixing the three-way catalyst because a supercharger is close to a flywheel, and the generator of the range extender is provided with two mounting points which are relatively far away from the catalyst.

In order to solve the technical problem, the prior art provides a three way catalyst converter fixing device, and this novel three way catalyst converter fixing device mainly includes the welding catalyst converter support on the catalyst converter end cover of giving vent to anger and with this catalyst converter leg joint and fix the fixed bolster on the engine body, and its technical essential is mainly: the catalyst support is provided with an arc-shaped surface matched with the air outlet end cover, the arc-shaped surface is installed on the air outlet end cover of the three-way catalyst through a welding process, three through holes are formed in the catalyst support and are connected with a fixed support through bolts and nuts, the fixed support is an integrally formed aluminum casting and is provided with two installation surfaces which are 90 degrees, one installation surface is connected with the catalyst support, and the other installation surface is connected with an engine. Although the combined fixed bracket can effectively control the resonance frequency of the exhaust hot end, the fixed bracket is fixed on the engine, and the scheme cannot be implemented when no fixed point is arranged on the engine. The range extender generator is provided with a mounting point for fixing the three-way catalyst, so that the three-way catalyst fixing device is provided for fixing the three-way catalyst on the range extender generator, and the resonant frequency of the exhaust hot end can be enabled to avoid the excitation frequency of the engine, which becomes a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim is realized fixing three way catalyst converter on increasing journey ware generator.

The utility model discloses a further purpose is fixing the three way catalyst converter under the prerequisite on increasing the journey ware generator, can make the resonant frequency in exhaust hot junction avoid the excitation frequency of engine.

Particularly, the utility model provides a three way catalyst converter fixing device, including first fixed bolster and with the second fixed bolster that first fixed bolster links to each other, first fixed bolster links to each other with the three way catalyst converter body of vehicle, the second fixed bolster with the generator body of the journey ware that increases of vehicle links to each other.

Optionally, the second fixing bracket comprises a support plate and a mounting plate, the support plate and the mounting plate intersecting at a position above the middle of the mounting plate;

the second fixing support is connected with the first fixing support through the supporting plate, and is connected with the generator body through the mounting plate.

Optionally, the angle between the support plate and the mounting plate is less than or equal to 90 °.

Optionally, the mounting plate has at least two first bosses thereon, each of the first bosses having a central through hole;

the first boss is matched with a second boss on the generator body, the second boss is provided with a counter bore, and a first fastener penetrates through the central through hole in the first boss and the counter bore in the second boss, so that the second fixing support and the generator body are connected together.

Optionally, the at least two first bosses are respectively located at two sides of the support plate.

Optionally, at least one reinforcing rib is respectively arranged on two sides of the supporting plate.

Optionally, the supporting plate has at least one first through hole, and the first fixing bracket has at least one second through hole corresponding to the at least one through hole;

the second fastening member penetrates through the first through hole in the support plate and the second through hole in the first fixing bracket, so that the first fixing bracket and the second fixing bracket are connected together.

Optionally, the first fixing bracket comprises a bracket body and a first flange located at one end of the bracket body, and the bracket body is provided with the at least one second through hole;

the first flange is configured in a circular arc shape so as to be attached to the outer surface of the three-way catalyst body.

Optionally, the first fixing bracket further comprises two second flanges, and the two second flanges are respectively arranged on two sides of the bracket body.

Particularly, the utility model also provides a vehicle, including aforementioned three way catalyst converter fixing device.

According to the utility model discloses a scheme is through setting up first fixed bolster and second fixed bolster between three way catalyst converter and increase journey ware generator to couple together three way catalyst converter and increase journey ware generator, realized fixing the purpose on increasing journey ware generator with three way catalyst converter.

Moreover, the three-way catalyst fixing device is simple and reasonable in structural design, the influence of the simple design structure on cost and weight is ignored, the structural strength is improved, the resonance frequency is high, and the requirement of avoiding the excitation frequency of the engine is met. The maximum working speed of the engine of the range extender is 4000r/min, and the main excitation frequencies of the range extender are 1-order 100Hz and 1.5-order 150 Hz. Through the connection of the mounting bolt and the generator body of the range extender, the connection mode of connecting the first fixing support and the second fixing support through the matching of the welding nut and the mounting bolt improves the structural strength of the three-way catalyst, and through modal analysis, the three-way catalyst fixing device and the three-way catalyst have the resonance frequency of 174Hz which is higher than the excitation frequency of the engine of 150Hz, so that the excitation frequency of the engine is avoided, and the resonance failure risk of the three-way catalyst is reduced.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 shows a schematic block diagram of a three-way catalyst fixing device fixed to a three-way catalyst according to an embodiment of the present invention;

fig. 2 shows a schematic top view of a first fixing support according to an embodiment of the invention;

fig. 3 shows a schematic side view of a first fixing support according to an embodiment of the invention;

fig. 4 shows a schematic top view of a second fixing support according to an embodiment of the invention;

fig. 5 shows a schematic side view of a second fixing support according to an embodiment of the invention;

fig. 6 shows a schematic block diagram of a second fixing support according to an embodiment of the present invention;

figure 7 shows a schematic partial view of a first boss mated with a second boss according to an embodiment of the present invention;

in the figure: 1-a first fixing support, 11-a support body, 111-a second through hole, 12-a first flanging, 13-a second flanging, 14-a welding nut, 2-a second fixing support, 21-a support plate, 211-a first through hole, 22-a mounting plate, 221-a first boss, 222-a central through hole, 23-a reinforcing rib, 231-a first reinforcing rib, 232-a second reinforcing rib, 233-a third reinforcing rib, 234-a fourth reinforcing rib, 3-a three-way catalyst body, 4-a generator body, 41-a second boss, 5-a first fastener and 6-a second fastener.

Detailed Description

Fig. 1 shows a schematic structural diagram of a three-way catalyst fixing device fixed to a three-way catalyst according to an embodiment of the present invention. As shown in fig. 1, the three-way catalyst fixing device includes a first fixing bracket 1 and a second fixing bracket 2 connected to the first fixing bracket 1, the first fixing bracket 1 being connected to a three-way catalyst body 3 of a vehicle, the second fixing bracket 2 being connected to a generator body 4 (see fig. 7) of a range extender of the vehicle.

According to the utility model discloses a scheme is through setting up first fixed bolster 1 and second fixed bolster 2 between three way catalyst converter and increase journey ware generator to couple together three way catalyst converter and increase journey ware generator, realized fixing the purpose on increasing journey ware generator with three way catalyst converter.

Fig. 2 shows a schematic top view of a first fixing support according to an embodiment of the invention. Fig. 3 shows a schematic side view of a first fixing support according to an embodiment of the invention. The first fixing bracket 1 is preferably an integrally formed part, which is mainly stamped and formed from a plate 3mm thick. As shown in fig. 2 and 3, the first fixing bracket 1 includes a bracket body 11, a first flange 12 at one end of the bracket body 11, and two second flanges 13 respectively disposed at two sides of the bracket body 11. The bracket body 11 has at least one second through hole 111 for connecting with the second fixing bracket 2. The at least one second through hole 111 has a uniform structure and size. In this embodiment, the number of the second through holes 111 is two. The second through-hole 111 is a through-hole having a diameter of 9 mm.

This first turn-up 12 is configured into circular-arc shape to be in close contact with the outer surface of three way catalyst converter body 3, and this three way catalyst converter body 3 is the cylinder, and first turn-up 12 can closely laminate with three way catalyst converter body 3 to along the contact side welding, from this improvement structural strength. Wherein, the two second flanges 13 have the same structure and size. The second flange 13 is a right triangle and mainly serves to increase strength.

Fig. 4 shows a schematic top view of a second fixing support according to an embodiment of the invention. Fig. 5 shows a schematic side view of a second fixing support according to an embodiment of the invention. Fig. 6 shows a schematic block diagram of a second fixing support according to an embodiment of the invention. The second fixing support 2 is preferably a cast integral piece, which may be a 6mm thick piece. As shown in fig. 4 to 6, the second fixing bracket 2 includes a support plate 21 and a mounting plate 22, and the support plate 21 and the mounting plate 22 intersect at a position on the middle upper side of the mounting plate 22. Wherein the second fixing bracket 2 is connected with the first fixing bracket 1 through the support plate 21 and is connected with the generator body 4 through the mounting plate 22. The angle between the support plate 21 and the mounting plate 22 may be, for example, 45 °, 60 °, 80 ° or 90 °, or any other value greater than 0 ° and less than or equal to 90 °. Preferably, the angle between the support plate 21 and the mounting plate 22 is 90 °.

The mounting plate 22 has at least two first bosses 221 thereon, each of the first bosses 221 having a central through-hole 222. In one embodiment, the number of the first bosses 221 is two. The two first bosses 221 are respectively located at both sides of the support plate 21. Fig. 7 shows a schematic partial view of a first boss mated with a second boss according to an embodiment of the present invention. As shown in fig. 7, the generator body 4 has at least one second boss 41 thereon, and the second boss 41 has a counter bore. In one embodiment, the number of the second bosses 41 is two, and the counter bores of the second bosses 41 have threads therein. The first boss 221 is matched with the second boss 41 on the generator body 4, and the first fastening member 5 penetrates through the central through hole 222 on the first boss 221 and the counter bore on the second boss 41, so as to connect the second fixing bracket 2 and the generator body 4 together. The first fastening member 5 may be, for example, a mounting bolt. In the embodiment, the second fixing bracket 2 is mounted on the generator body 4 of the range extender through the structure shown in fig. 7, the whole structure is firm and reliable, and bolts are not easy to loosen. The first bosses 221 serve as a connecting function, on the one hand, and also as positioning pins, on the other hand, so that the second fixing bracket 2 is mounted at a correct position, and the overall strength of the bracket is improved.

At least one reinforcing rib 23 is provided on both sides of the support plate 21, respectively. In one embodiment, the number of the reinforcing ribs 23 is four. As shown in fig. 4 and 5, the four reinforcing ribs 23 are a first reinforcing rib 231, a first reinforcing rib 232, a third reinforcing rib 233, and a fourth reinforcing rib 234, respectively. The first reinforcing bead 231 and the first reinforcing bead 232 are disposed at one side of the support plate 21, and the third reinforcing bead 233 and the fourth reinforcing bead 234 are disposed at the other side of the support plate 21. The first reinforcing rib 231 extends from the support plate 21 to the first boss 221 at one end of the mounting plate 22, and the first reinforcing rib 232 extends from the support plate 21 to the first reinforcing rib 231. The third reinforcing rib 233 extends from the support plate 21 to the first boss 221 at the other end of the mounting plate 22, and the fourth reinforcing rib 234 extends from the support plate 21 to the third reinforcing rib 233. The four reinforcing ribs 23 serve to reinforce the structure. This structure allows the overall resonance frequency of the three-way catalyst body 3 and the second fixed bracket 2 to be 150Hz or higher, avoiding the excitation frequency of the engine.

Referring to fig. 6, the support plate 21 has at least one first through hole 211. The number of the second through holes 111 on the first fixing bracket 1 matches with the number of the first through holes 211. The second fastening member 6 is inserted through the first through hole 211 of the support plate 21 and the second through hole 111 of the first fixing bracket 1, thereby connecting the first fixing bracket 1 and the second fixing bracket 2 together. The second fastening member 6 may be, for example, a mounting bolt of M8. The first through hole 211 in the second fixing bracket 2 may be, for example, an oblong hole, and the arrangement of the oblong hole can eliminate assembly errors when the three-way catalyst body 3 and the second fixing bracket 2 are assembled. Referring to fig. 1, a weld nut 14 is welded to a lower end of the second through hole 111 of the first fixing bracket 1, and the second fixing bracket 2 and the first fixing bracket 1 are fixed by fitting two mounting bolts M8 with the weld nut 14. The weld nut 14 is welded directly to the first fixing bracket 1, reducing the number of parts and increasing the convenience of installation.

According to the utility model discloses a scheme, this three way catalyst converter fixing device structural design is simple reasonable, and this project organization is simple to neglect the influence of cost, weight, and has improved structural strength, and resonant frequency is great to satisfy the requirement of avoiding engine excitation frequency. The maximum working speed of the engine of the range extender is 4000r/min, and the main excitation frequencies of the range extender are 1-order 100Hz and 1.5-order 150 Hz. The three-way catalyst fixing device and the three-way catalyst resonant frequency thereof are 174Hz and higher than the engine excitation frequency of 150Hz through modal analysis, so that the engine excitation frequency is avoided, and the resonant failure risk of the three-way catalyst is reduced.

Particularly, the utility model also provides a vehicle, this vehicle includes aforementioned three way catalyst converter fixing device.

Thus far, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications can be made, consistent with the general principles of the invention, as may be directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. The utility model provides a three way catalyst converter fixing device which characterized in that, including first fixed bolster and with the second fixed bolster that first fixed bolster links to each other, first fixed bolster links to each other with the three way catalyst converter body of vehicle, the second fixed bolster with the generator body of the range extender of vehicle links to each other.

2. The three-way catalyst fixing device according to claim 1, wherein the second fixing bracket includes a support plate and a mounting plate that intersect at a position on the middle upper side of the mounting plate;

3. The three-way catalyst fixing device according to claim 2, wherein an angle between the support plate and the mounting plate is less than or equal to 90 °.

4. The three-way catalyst fixing device according to claim 3, wherein the mounting plate has at least two first bosses thereon, each of the first bosses having a central through-hole;

5. The three-way catalyst fixing device according to claim 4, wherein the at least two first bosses are respectively located on both sides of the support plate.

6. The three-way catalyst fixing device according to any one of claims 2 to 5, wherein at least one reinforcing rib is provided on each of both sides of the support plate.

7. The three-way catalyst fixing device according to any one of claims 2 to 5, wherein the support plate has at least one first through hole, and the first fixing bracket has at least one second through hole corresponding to the at least one through hole, respectively;

8. The three-way catalyst fixing device according to claim 7, wherein the first fixing bracket includes a bracket body having the at least one second through hole and a first flange at one end of the bracket body;

9. The three-way catalyst fixing device according to claim 8, wherein the first fixing bracket further includes two second beads that are respectively provided on both sides of the bracket body.

10. A vehicle characterized by comprising the three-way catalyst fixing device according to any one of claims 1 to 9.