CN215860427U

CN215860427U - Double-flow-channel exhaust pipe with separately-arranged gas taking ports

Info

Publication number: CN215860427U
Application number: CN202122384663.6U
Authority: CN
Inventors: 陈美娟; 徐雪松; 孙步武
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-02-18
Anticipated expiration: 2031-09-29

Abstract

The utility model provides a double-flow-passage exhaust pipe with separately arranged air intake ports, and belongs to the technical field of engine exhaust gas recirculation. The double-channel exhaust pipe with the separately arranged gas taking ports comprises an exhaust manifold I and an exhaust manifold II. I bottom one side intercommunication of exhaust manifold has EGR to get trachea I, I tip of EGR getting trachea is provided with mounting flange II, I top of exhaust manifold is provided with inlet port I, inlet port II and inlet port III respectively, II bottom one side intercommunication of exhaust manifold have EGR to get trachea II, II tip of EGR getting trachea are provided with mounting flange III. According to the utility model, the air intake and exhaust gas is recycled through the EGR gas taking pipe I and the EGR gas taking pipe II, and the air intake pressure is increased by taking air from the air intake ports of the two superchargers, so that the exhaust gas recycling efficiency can be improved, and the national emission requirements can be met. And the device adopts separately placed mounting flange II and mounting flange III to install, designs the butt joint position of waste gas recovery mouth according to actual demand, improves the suitability.

Description

Double-flow-channel exhaust pipe with separately-arranged gas taking ports

Technical Field

The utility model relates to the field of engine exhaust gas recirculation, in particular to a double-flow exhaust pipe with separately arranged gas taking ports.

Background

The engine EGR technology is a technology for an internal combustion engine of an automobile to introduce a part of exhaust gas into an intake side after combustion and to intake the exhaust gas again. Engine EGR technology is also known as engine exhaust gas recirculation technology.

After exhaust gas generated by an engine in the prior art passes through an exhaust manifold, only a single air intake is adopted to carry out exhaust gas recycling in an EGR system, and as the pressure difference between exhaust pressure and intake pressure is small, the requirement of high EGR rate cannot be met, namely the requirement of national emission six is difficult to meet.

SUMMERY OF THE UTILITY MODEL

In order to make up for the above deficiencies, the utility model provides a double-channel exhaust pipe with separated air intake ports, aiming at improving the problem that the exhaust gas generated by the engine in the prior art is recycled only by adopting a single air intake port to the interior of an EGR system after passing through an exhaust manifold, and the requirement of higher EGR rate cannot be met because the pressure difference between the exhaust pressure and the intake pressure is smaller.

The utility model is realized by the following steps:

the utility model provides a double-flow exhaust pipe with separately arranged air intake ports, which comprises an exhaust manifold I and an exhaust manifold II.

I bottom one side intercommunication of exhaust manifold has EGR to get trachea I, I tip of trachea is got to EGR is provided with mounting flange II, I top of exhaust manifold is provided with inlet port I, inlet port II and inlet port III respectively, II bottom one side intercommunication of exhaust manifold have EGR to get trachea II, II tips of trachea are got to EGR are provided with mounting flange III, II tops of exhaust manifold are provided with inlet port IV, inlet port V and inlet port VI respectively, EGR get trachea I with II one side of trachea are got to EGR all is provided with the booster and gets the gas port, EGR get trachea II set up in I bottom of exhaust manifold, just exhaust manifold I with EGR gets and is connected with the gusset plate between the trachea II.

In one embodiment of the utility model, the top parts of the air inlet port I, the air inlet port II, the air inlet port III, the air inlet port IV, the air inlet port V and the air inlet port VI are respectively provided with a fixed flange I, and the top part of the fixed flange I is provided with a sealing component.

In one embodiment of the utility model, the sealing assembly comprises an aluminum gasket I, an aluminum gasket II, a rubber gasket and a fixing bolt, the aluminum gasket II is arranged at the top of the fixing flange I, the rubber gasket is arranged between the aluminum gasket I and the aluminum gasket II, and a screw of the fixing bolt respectively and movably penetrates through the fixing flange I, the aluminum gasket I and the aluminum gasket II.

In an embodiment of the utility model, a U-shaped hoop plate is clamped between the aluminum washer I and the aluminum washer II, and a screw of the fixing bolt movably penetrates through the U-shaped hoop plate.

In one embodiment of the utility model, two sides of the rubber gasket between the aluminum gasket I and the aluminum gasket II are respectively provided with an annular groove, and at least two groups of annular grooves are arranged.

In an embodiment of the utility model, arc-shaped convex blocks are respectively arranged on one sides of the aluminum gasket I and the aluminum gasket II close to the rubber gasket, and the arc-shaped convex blocks are clamped inside the annular groove.

In an embodiment of the present invention, the cross sections of the arc-shaped protrusion and the annular groove are both trapezoidal structures.

The utility model has the beneficial effects that: according to the double-flow exhaust pipe with the separately arranged air intake ports, the exhaust manifold I and the exhaust manifold II can arrange the exhaust gas generated by the engine through the six groups of air intake ports by adopting the separately arranged double-flow air pipes, namely, the exhaust gas is recycled through the air intake of the EGR air intake pipe I and the air intake of the EGR air intake pipe II, and the air intake pressure is increased through the air intake of the two supercharger air intake ports, so that the waste gas recycling efficiency can be improved, and the national emission requirements of six countries can be met. And the device adopts separately placed mounting flange II and mounting flange III to install, designs the butt joint position of waste gas recovery mouth according to actual demand, improves the suitability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a dual-flow exhaust pipe with separate gas inlets according to an embodiment of the present invention;

FIG. 2 is a schematic side view of a seal assembly according to an embodiment of the present invention;

fig. 3 is a schematic bottom view of an aluminum gasket i according to an embodiment of the present invention;

fig. 4 is a schematic top view of a rubber gasket according to an embodiment of the present invention.

In the figure: 100-exhaust manifold I; 110-EGR gas taking pipe I; 120-inlet port I; 130-air inlet port ii; 140-inlet port iii; 150-supercharger air intake; 160-reinforcing plates; 170-fixing the flange I; 180-fixed flange II; 200-exhaust manifold ii; 210-EGR gas taking pipe II; 220-air inlet port IV; 230-intake port V; 240-inlet port vi; 250-mounting flange III; 300-a seal assembly; 310-aluminum gasket I; 311-arc shaped projection; 320-aluminum gasket II; 330-rubber gasket; 331-an annular groove; 340-fixing bolts; 350-U-shaped hoop plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1-4, the present invention provides a dual-channel exhaust pipe with separate intake ports, which includes an exhaust manifold i 100 and an exhaust manifold ii 200.

Wherein, I100 of exhaust manifold and II 200 of exhaust manifold can adopt the double-flow-channel trachea of branch putting with the waste gas that the engine produced to set up two superchargers and get gas port 150 and retrieve, improve recovery efficiency, design waste gas recovery mouth's position according to actual demand, practice thrift the occupation of space.

Referring to fig. 1, one side of the bottom of an exhaust manifold i 100 is communicated with an EGR gas taking pipe i 110, the end of the EGR gas taking pipe i 110 is provided with a fixing flange ii 180, and the top of the exhaust manifold i 100 is provided with an air inlet port i 120, an air inlet port ii 130 and an air inlet port iii 140 respectively. An air inlet port I120, an air inlet port II 130 and an air inlet port III 140 in the top of the exhaust manifold I100 are respectively used for air inlet and are finally recycled through an EGR gas taking pipe I110.

Referring to fig. 1, one side of the bottom of an exhaust manifold ii 200 is communicated with an EGR gas intake pipe ii 210, the end of the EGR gas intake pipe ii 210 is provided with a fixing flange iii 250, the top of the exhaust manifold ii 200 is respectively provided with an air inlet port iv 220, an air inlet port v 230 and an air inlet port vi 240, one sides of the EGR gas intake pipe i 110 and the EGR gas intake pipe ii 210 are both provided with a supercharger gas intake 150, the EGR gas intake pipe ii 210 is arranged at the bottom of the exhaust manifold i 100, and a reinforcing plate 160 is connected between the exhaust manifold i 100 and the EGR gas intake pipe ii 210; the exhaust manifold I100, the EGR gas taking pipe II 210 and the reinforcing plate 160 are integrally formed. An air inlet port IV 220, an air inlet port V230 and an air inlet port VI 240 at the top of the exhaust manifold II 200 are respectively used for air inlet and are finally recycled through an EGR gas taking pipe II 210; two supercharger air intake ports 150 are used for taking air to improve the air intake pressure, so that the waste gas recovery efficiency can be improved, and the national emission requirements can be met. And the device adopts II 180 of mounting flange and the mounting flange III 250 of split, designs the butt joint position of waste gas recovery mouth according to actual demand, improves the suitability.

Referring to fig. 2, the top of each of the inlet port i 120, the inlet port ii 130, the inlet port iii 140, the inlet port iv 220, the inlet port v 230 and the inlet port vi 240 is provided with a fixing flange i 170, and the top of the fixing flange i 170 is provided with a sealing assembly 300. The seal assembly 300 includes an aluminum gasket i 310, an aluminum gasket ii 320, a rubber gasket 330, and a fixing bolt 340. The second aluminum gasket 320 is arranged at the top of the first fixing flange 170, the rubber gasket 330 is arranged between the first aluminum gasket 310 and the second aluminum gasket 320, and the screw rods of the fixing bolts 340 penetrate through the first fixing flange 170, the first aluminum gasket 310 and the second aluminum gasket 320 in a movable mode respectively. The aluminum gasket I310, the aluminum gasket II 320 and the rubber gasket 330 in the sealing assembly 300 enable the air inlet port to have good sealing effect. A U-shaped hoop plate 350 is clamped between the aluminum gasket I310 and the aluminum gasket II 320, and a screw of the fixing bolt 340 movably penetrates through the U-shaped hoop plate 350. U type hoop plate 350 is that the card is established to compress tightly I310 of aluminium packing ring, II 320 of aluminium packing ring and rubber packing ring 330 for it is inseparabler to laminate between I310 of aluminium packing ring, II 320 of aluminium packing ring and the rubber packing ring 330, promotes sealed effect.

Referring to fig. 3 and 4, two sides of the rubber gasket 330 between the aluminum gasket i 310 and the aluminum gasket ii 320 are provided with annular grooves 331, and at least two groups of annular grooves 331 are provided. The side, close to the rubber gasket 330, of each of the aluminum gasket I310 and the aluminum gasket II 320 is provided with an arc-shaped bump 311, and the arc-shaped bumps 311 are clamped inside the annular groove 331. The clamping design of the arc-shaped convex block 311 and the annular groove 331 enables the contact area between the rubber gasket 330 and the aluminum gasket I310 and the aluminum gasket II 320 to be increased, and the sealing effect is improved. Arc lug 311 is the trapezium structure with the cross-section of annular groove 331, and the arc lug 311 and the annular groove 331 of trapezium structure are convenient for insert each other and establish, and increase the area of contact each other between, improve the area of contact between rubber gasket 330 and aluminium gasket I310 and the aluminium gasket II 320, promote sealed effect.

The working principle of the double-channel exhaust pipe with separated gas taking ports is as follows: exhaust manifold I100 and exhaust manifold II 200 can adopt the double-flow-passage trachea setting of branch putting with the waste gas that the engine produced through six air inlets, get I110 of trachea and the EGR through EGR and get II 210 intake exhaust gas recovery of trachea promptly, two superchargers get gas port 150 and get and promote inlet pressure to can improve exhaust gas recovery efficiency, can satisfy six emission requirements of state. And the device adopts II 180 of mounting flange and the mounting flange III 250 of split, designs the butt joint position of waste gas recovery mouth according to actual demand, improves the suitability. The aluminum gasket I310, the aluminum gasket II 320 and the rubber gasket 330 in the sealing assembly 300 on the fixing flange I170 enable the air inlet port to have good sealing effect.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-flow-channel exhaust pipe with separately arranged gas taking ports is characterized by comprising

The exhaust manifold comprises an exhaust manifold I (100), wherein an EGR gas taking pipe I (110) is communicated with one side of the bottom of the exhaust manifold I (100), a fixing flange II (180) is arranged at the end part of the EGR gas taking pipe I (110), and an air inlet port I (120), an air inlet port II (130) and an air inlet port III (140) are respectively arranged at the top of the exhaust manifold I (100);

exhaust manifold II (200), II (200) bottom one side of exhaust manifold intercommunication has EGR to get trachea II (210), EGR gets trachea II (210) tip and is provided with mounting flange III (250), II (200) tops of exhaust manifold are provided with inlet port IV (220), inlet port V (230) and inlet port VI (240) respectively, EGR get trachea I (110) with EGR gets trachea II (210) one side and all is provided with booster and gets gas port (150), EGR gets trachea II (210) set up in I (100) bottom of exhaust manifold, just exhaust manifold I (100) with EGR gets and is connected with reinforcing plate (160) between trachea II (210).

2. The dual-channel exhaust pipe with the separately arranged intake ports as claimed in claim 1, wherein the top of each of the intake port i (120), the intake port ii (130), the intake port iii (140), the intake port iv (220), the intake port v (230) and the intake port vi (240) is provided with a fixing flange i (170), and the top of the fixing flange i (170) is provided with a sealing assembly (300).

3. The dual-flow exhaust pipe with the separately arranged gas taking ports as claimed in claim 2, wherein the sealing assembly (300) comprises an aluminum gasket I (310), an aluminum gasket II (320), a rubber gasket (330) and a fixing bolt (340), the aluminum gasket II (320) is arranged on the top of the fixing flange I (170), the rubber gasket (330) is arranged between the aluminum gasket I (310) and the aluminum gasket II (320), and a screw of the fixing bolt (340) respectively and movably penetrates through the fixing flange I (170), the aluminum gasket I (310) and the aluminum gasket II (320).

4. The dual-flow exhaust pipe with the separately arranged gas taking ports as claimed in claim 3, wherein a U-shaped hoop plate (350) is clamped between the aluminum washer I (310) and the aluminum washer II (320), and a screw of the fixing bolt (340) movably penetrates through the U-shaped hoop plate (350).

5. The dual-flow exhaust pipe with the separately arranged gas taking ports as claimed in claim 3, wherein two sides of the rubber gasket (330) between the aluminum gasket I (310) and the aluminum gasket II (320) are provided with annular grooves (331), and at least two groups of the annular grooves (331) are provided.

6. The exhaust pipe with two separated gas intake ports according to claim 5, wherein the aluminum gasket I (310) and the aluminum gasket II (320) are respectively provided with an arc-shaped protrusion (311) on one side close to the rubber gasket (330), and the arc-shaped protrusions (311) are clamped inside the annular groove (331).

7. The dual-flow exhaust pipe with separated gas taking ports as claimed in claim 6, wherein the cross sections of the arc-shaped projection (311) and the annular groove (331) are both trapezoidal structures.