CN110985179A - Exhaust pipe for engine - Google Patents
Exhaust pipe for engine Download PDFInfo
- Publication number
- CN110985179A CN110985179A CN201911324732.5A CN201911324732A CN110985179A CN 110985179 A CN110985179 A CN 110985179A CN 201911324732 A CN201911324732 A CN 201911324732A CN 110985179 A CN110985179 A CN 110985179A
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- CN
- China
- Prior art keywords
- exhaust pipe
- exhaust
- engine
- control valve
- valve
- 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.)
- Pending
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Classifications
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
- F02B27/04—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues in exhaust systems only, e.g. for sucking-off combustion gases
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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)
- Exhaust Silencers (AREA)
- Characterised By The Charging Evacuation (AREA)
Abstract
The invention discloses an exhaust pipe for an engine, wherein an exhaust pipe inlet and an exhaust pipe outlet are arranged on an exhaust pipe body of the exhaust pipe for the engine, a control valve is also arranged on the exhaust pipe body, the control valve drives a partition plate to move, and the interior of the exhaust pipe body can be divided into two independent exhaust spaces when the partition plate extends out. When the engine operates under the working condition of low speed and large torque, a pulse supercharging structure is needed, at the moment, the control valve drives the partition plate to divide the interior of the exhaust pipe body into two independent exhaust spaces, and the exhaust pulse energy is fully utilized; when the engine runs smoothly, a constant-pressure boosting structure is needed to obtain high exhaust energy, and at the moment, the partition plate is retracted under the action of the control valve. The exhaust pipe for the engine can realize the switching between constant-pressure supercharging and pulse supercharging for the engine with variable working conditions, and realize the effective utilization of exhaust energy under high-speed and low-speed working conditions.
Description
Technical Field
The invention belongs to the technical field of engines, and particularly relates to an exhaust pipe for an engine.
Background
The patent publication number is "CN 110030073A", the name is "a gasoline engine exhaust system", this document provides a gasoline engine exhaust system comprising an exhaust manifold and an exhaust passage, the exhaust passage comprises a first exhaust manifold, a second exhaust manifold and a third exhaust manifold, the collecting end of the first exhaust manifold is an exhaust manifold outlet, the branch end of the first exhaust manifold is a first exhaust passage inflow candidate port, the branch end of the second exhaust manifold is a second exhaust passage inflow candidate port, the branch end of the third exhaust manifold is a third exhaust passage inflow candidate port, the collecting ends of the second exhaust manifold and the third exhaust manifold are respectively connected with the exhaust collecting pipe, the exhaust collecting pipe is connected with the exhaust manifold outlet in a gathering mode, and the first exhaust passage inflow waiting opening, the first exhaust manifold and the exhaust manifold outlet are sequentially communicated to form a first exhaust passage. The second exhaust passage inflow candidate port, the second exhaust manifold, the exhaust collecting pipe and the exhaust manifold outlet are sequentially communicated to form a second exhaust passage, and the third exhaust passage inflow candidate port, the third exhaust manifold, the exhaust collecting pipe and the exhaust manifold outlet are sequentially communicated to form a third exhaust passage.
This technical scheme is through designing an exhaust pipe structure, can realize the exhaust flow of balanced three cylinder, reduces the exhaust resistance, increases the exhaust flow coefficient to better utilization exhaust energy.
In the prior art, the exhaust pipe can only singly realize the utilization of the exhaust energy of the engine under the high-speed or low-speed working condition, and the effective utilization of the exhaust energy under the high-speed and low-speed working condition can not be simultaneously realized for the engine under the variable working condition.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the exhaust pipe for the engine can realize the switching between constant pressure supercharging and pulse supercharging for the engine with variable working conditions, and realize the effective utilization of exhaust energy under the high-speed and low-speed working conditions.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the exhaust pipe for the engine comprises an exhaust pipe body, wherein an exhaust pipe inlet and an exhaust pipe outlet are formed in the exhaust pipe body, a control valve is further arranged on the exhaust pipe body and drives a partition plate to move, and the partition plate can divide the interior of the exhaust pipe body into two independent exhaust spaces when extending out.
Further, the control valve is perpendicular to the outlet of the exhaust pipe.
Furthermore, the control valve comprises a valve body, a return spring is vertically arranged in an inner cavity of the valve body, one end of the return spring is fixedly connected to the lower surface of the valve body, the other end of the return spring is fixedly connected to the bottom of the valve plate, and the valve plate is transversely arranged; the upper surface fixed connection of valve plate the baffle, the vertical setting of baffle.
Further, the valve plate and the partition plate are of an integrated structure.
Furthermore, a limiting groove is formed in the inner wall of the outlet of the exhaust pipe, and when the partition plate extends out, the free end of the partition plate is inserted into the limiting groove.
Furthermore, the bottom of the valve body is communicated with a control valve air pipe.
Further, a sealing gasket is arranged between the exhaust pipe body and the valve body.
Further, the outer peripheral face of valve plate is provided with the sealing washer, the sealing washer be used for with the valve body with the valve plate is sealed.
Furthermore, four inlets of the exhaust pipe are arranged.
Furthermore, six inlets of the exhaust pipe are arranged.
After the technical scheme is adopted, the invention has the beneficial effects that:
the exhaust pipe body of the exhaust pipe for the engine is provided with an exhaust pipe inlet and an exhaust pipe outlet, the exhaust pipe body is further provided with a control valve, the control valve drives the partition board to move, and the partition board can divide the interior of the exhaust pipe body into two independent exhaust spaces when extending out. When the engine operates under the working condition of low speed and large torque, a pulse supercharging structure is needed, at the moment, the control valve drives the partition plate to divide the interior of the exhaust pipe body into two independent exhaust spaces, and the exhaust pulse energy is fully utilized; when the engine runs smoothly, a constant-pressure boosting structure is needed to obtain high exhaust energy, and at the moment, the partition plate is retracted under the action of the control valve. The exhaust pipe for the engine can realize the switching between constant-pressure supercharging and pulse supercharging for the engine with variable working conditions, and realize the effective utilization of exhaust energy under high-speed and low-speed working conditions.
Drawings
Fig. 1 is a perspective view of an exhaust pipe for an engine of the present invention;
FIG. 2 is a schematic view of the structure of an exhaust pipe for an engine of the present invention;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 5 is an enlarged, fragmentary view of area B of FIG. 3;
FIG. 6 is an enlarged fragmentary view of area C of FIG. 4;
in the figure, 1-an exhaust pipe body, 11-an exhaust pipe inlet, 12-an exhaust pipe outlet, 121-a limiting groove, 2-a flange, 3-a control valve, 31-a valve body, 32-a control valve air pipe, 321-a control valve air pipe inlet, 33-a valve plate, 34-a partition plate, 35-a return spring, 4-a sealing gasket and 5-a sealing ring.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 1, 2, 3, 4 and 6, an exhaust pipe for an engine includes an exhaust pipe body 1, and an exhaust pipe inlet 11 and an exhaust pipe outlet 12 are provided in the exhaust pipe body 1. The exhaust pipe outlet 12 is provided as one. In the case of a four cylinder engine, four exhaust pipe inlets 11 are provided. In the case of a six cylinder engine, six exhaust pipe inlets 11 are provided.
The exhaust pipe body 1 is also provided with a control valve 3, the control valve 3 drives the partition plate 34 to move, and when the partition plate 34 extends out, the interior of the exhaust pipe body 1 can be divided into two independent exhaust spaces. The control valve 3 is preferably arranged perpendicular to the exhaust pipe outlet 12.
As shown together with fig. 1 and 5, the control valve 3 includes a valve body 31, a flange end face of the valve body 31 is coupled to the exhaust pipe body 1 via a flange 2, and the valve body 31 is fixedly connected to the exhaust pipe body 1 via bolts. A return spring 35 is vertically arranged in an inner cavity of the valve body 31, one end of the return spring 35 is fixedly connected to the lower surface of the valve body 31, the other end of the return spring 35 is fixedly connected to the bottom of the valve plate 33, and the valve plate 33 is transversely arranged; the upper surface of valve plate 33 is fixed connection baffle 34, and baffle 34 sets up vertically. The valve plate 33 and the partition plate 34 are preferably of an integral structure.
A stopper groove 121 is provided on an inner wall of the exhaust pipe outlet 12, and a free end of the partition plate 34 is inserted into the stopper groove 121 when the partition plate 34 is extended. The limiting groove 121 may be a limiting groove 121 fixedly connected to the inner wall of the exhaust pipe outlet 12, or a limiting groove formed by cutting a part of the material on the inner wall of the exhaust pipe outlet 12.
The bottom of the valve body 31 is communicated with a control valve air pipe 32. The control valve 3 is started by air, so that the opening and closing of the control valve 3 can be met under the high-temperature condition, and the reliability is high.
A sealing gasket 4 is arranged between the exhaust pipe body 1 and the valve body 31, and sealing between the exhaust pipe body 1 and the valve body 31 is guaranteed.
The outer peripheral surface of valve plate 33 is provided with sealing washer 5, and sealing washer 5 is used for sealing valve body 31 and valve plate 33, guarantees the sealed of valve body 31 inner space.
The following describes in detail the process of exhaust gas treatment of a six-cylinder engine using an exhaust pipe for an engine of the present invention:
the exhaust pipe for an engine of the present invention is fixedly attached to an engine body. After the engine is started and the engine is operated under a low-speed high-torque working condition, an external pressure gas cylinder (not shown in the figure) is opened by a pulse pressurization structure, so that gas enters an inlet 321 of a control valve gas pipe and flows through the control valve gas pipe 32, after the valve body 31 is filled with the gas, a return spring 35 is stretched to push a valve plate 33 and a partition plate 34 to move upwards, the free end of the partition plate 34 is inserted into a limiting groove 121 on the inner wall of an exhaust pipe outlet 12, and at this time, the interior of the exhaust pipe body 1 is divided into two independent exhaust space parts. The exhaust of three cylinders on two sides is not interfered with each other as much as possible, and the exhaust pulse energy is utilized; when the engine runs stably at a high speed, in order to obtain higher exhaust energy, a constant-pressure boosting structure is needed, the external pressure gas cylinder is closed at the moment, the return spring 35 retracts and resets, the valve plate 33 and the partition plate 34 are pulled to move downwards until the return spring 35 is in a natural state, gas between the valve plate 33 and the valve body 34 flows back into the external gas cylinder through the control valve gas pipe 32, the inner cavity of the exhaust pipe body 1 is an integral exhaust space at the moment, and the exhaust pressure of each cylinder is in a constant-pressure boosting state through the stable state of the inner cavity of the exhaust pipe body 1.
In the description of the present specification, it is to be understood that the orientations or positional relationships described in the "vertical," "lateral," "inner wall," "bottom," and the like are based on the orientations or positional relationships shown in the drawings only for the convenience of describing the present invention and for the simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.
Claims (10)
1. The exhaust pipe for the engine comprises an exhaust pipe body, wherein an exhaust pipe inlet and an exhaust pipe outlet are formed in the exhaust pipe body.
2. The exhaust pipe for an engine according to claim 1, wherein the control valve is disposed perpendicular to the exhaust pipe outlet.
3. The exhaust pipe for the engine as claimed in claim 2, wherein the control valve comprises a valve body, a return spring is vertically arranged in an inner cavity of the valve body, one end of the return spring is fixedly connected to the lower surface of the valve body, the other end of the return spring is fixedly connected to the bottom of a valve plate, and the valve plate is transversely arranged; the upper surface fixed connection of valve plate the baffle, the vertical setting of baffle.
4. The exhaust pipe for an engine according to claim 3, wherein the valve plate and the partition plate are of an integral structure.
5. The exhaust pipe for the engine according to claim 4, wherein a stopper groove is provided on an inner wall of the exhaust pipe outlet, and when the partition plate is extended, a free end of the partition plate is inserted into the stopper groove.
6. The exhaust pipe for an engine according to claim 1, wherein a control valve pipe is connected to a bottom of the valve body.
7. The exhaust pipe for the engine according to claim 1, wherein a gasket is provided between the exhaust pipe body and the valve body.
8. The exhaust pipe for engine as set forth in claim 3, wherein a seal ring for sealing the valve body and the valve plate is provided on an outer peripheral surface of the valve plate.
9. An exhaust pipe for an engine according to claim 1, wherein four exhaust pipe inlets are provided.
10. An exhaust pipe for an engine according to claim 1, wherein the exhaust pipe inlet is provided in six.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911324732.5A CN110985179A (en) | 2019-12-20 | 2019-12-20 | Exhaust pipe for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911324732.5A CN110985179A (en) | 2019-12-20 | 2019-12-20 | Exhaust pipe for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110985179A true CN110985179A (en) | 2020-04-10 |
Family
ID=70073424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911324732.5A Pending CN110985179A (en) | 2019-12-20 | 2019-12-20 | Exhaust pipe for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110985179A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101008336A (en) * | 2004-08-04 | 2007-08-01 | 广东海洋大学 | Variable exhaust pipe volume module type pulse converter boost device of turbocharging diesel engine |
| CN201265453Y (en) * | 2008-10-23 | 2009-07-01 | 上海交通大学 | Adjustable impulse turbocharging apparatus |
| CN205532818U (en) * | 2016-02-15 | 2016-08-31 | 东风朝阳朝柴动力环保科技有限公司 | Diesel engine blast pipe |
| CN206617219U (en) * | 2017-02-09 | 2017-11-07 | 潍柴动力股份有限公司 | Pulse adjustable row tracheae and Diesel engine |
-
2019
- 2019-12-20 CN CN201911324732.5A patent/CN110985179A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101008336A (en) * | 2004-08-04 | 2007-08-01 | 广东海洋大学 | Variable exhaust pipe volume module type pulse converter boost device of turbocharging diesel engine |
| CN201265453Y (en) * | 2008-10-23 | 2009-07-01 | 上海交通大学 | Adjustable impulse turbocharging apparatus |
| CN205532818U (en) * | 2016-02-15 | 2016-08-31 | 东风朝阳朝柴动力环保科技有限公司 | Diesel engine blast pipe |
| CN206617219U (en) * | 2017-02-09 | 2017-11-07 | 潍柴动力股份有限公司 | Pulse adjustable row tracheae and Diesel engine |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200410 |