CN2924035Y - Waste-gas recirculation system of motorcycle engine - Google Patents
Waste-gas recirculation system of motorcycle engine Download PDFInfo
- Publication number
- CN2924035Y CN2924035Y CNU2006201099617U CN200620109961U CN2924035Y CN 2924035 Y CN2924035 Y CN 2924035Y CN U2006201099617 U CNU2006201099617 U CN U2006201099617U CN 200620109961 U CN200620109961 U CN 200620109961U CN 2924035 Y CN2924035 Y CN 2924035Y
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- Prior art keywords
- valve
- control valve
- flow
- communicated
- waste gas
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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
Abstract
The utility model discloses a recycle system for waste gas of motorbike engine, which arranges a waste gas circulation circuit between the outlet of the muffler of motorbike engine and the inlet of the air inlet pipe. The circulation circuit is in turn provided with a filter, a check valve and a flow-control valve which is jointly controlled by the exhaust back pressure of the muffler and air inlet negative pressure of the air inlet pipe; the inlet end of the flow-control valve is communicated with the outlet of the muffler by the filter on the circulation circuit and the outlet of the flow-control valve is communicated with the inlet of the air inlet pipe by the check valve; the control end of the flow-control valve is communicated with the air inlet pipe. The flow-control valve consists of a main valve core, a guide valve and a valve body consisting of upper, middle and lower parts; the main valve and the guide valve are respectively arranged in the flow valve chamber and the control valve chamber to control the exhaust quantity of the waste gas. The system is reasonably designed, can effectively reduces the exhaust of waste gas, has the advantages of simple structure, low cost, convenient for installation and adjustment, reliable performance, light weight, etc and is especially suitable for the recycle and reuse of the waste gas of the motorbike engine.
Description
Technical field
The utility model relates to the motorcycle engine EGR Technology, is specifically related to the operating mode different according to motorcycle engine, the exhaust gas recirculation of different flow is arrived the gas recirculation system of motorcycle engine combustion chamber.Belong to machinery manufacturing technology field.
Background technique
As everyone knows, fuel engine because burning is insufficient, not only can discharges and contain nitrogen oxide waste gas such as (NOx) in a large number in the course of the work, but also befouling environment.The NOx discharge amount is to adapt to environmental requirement in the engine exhaust gas in order to reduce, and various engine exhaust gas recirculating techniques (EGR) arise at the historic moment.Typical EGR Technology (EGR) is that part waste gas is introduced in the gas handling system of motor, enters engine cylinder combustion with combination gas.But too much EGR amount is unfavorable to the burning of mixed gas; Therefore, need control the EGR amount.At present, EGR Technology (EGR) is applied on the motor car engine comparatively general.Because the EGR amount control system structure of internal-combustion engines such as automobile is complicated, and mainly adopt automatical control system and the higher control valve control of cost, obviously can not be applied directly on the lower motorcycle of price itself; And improving product competitive ability for the unusual fierce motorcycle industry of competition, the main means of taking are under the prerequisite that does not increase cost, enhance product performance.Disclosed 02233086.0 " the self-controlled type vehicle exhaust high-level cleaner " of Chinese patent, 03148289.9 " realized layer-stepping Exhaust gas recirculation device and air intake control method in the petrol engine cylinder " etc. for another example, the treatment technology that all belongs to vehicle emission pollution gas is unsuitable for the exhaust gas recirculation utilization of motorcycle equally.Therefore, a kind of device or system that is used for the motorcycle waste gas circulation of development and Design become one of ordinary skill in the art's problem demanding prompt solution.
Summary of the invention
At the prior art above shortcomings, the purpose of this utility model is effectively to reduce NOx discharging in the motorcycle waste gas, reduces user cost, and a kind of motorcycle engine gas recirculation system is provided.
The purpose of this utility model is achieved in that the motorcycle engine gas recirculation system, between the import of outlet of motorcycle engine silencing apparatus and suction tude the waste gas circulation path is set, and the peripheral passage is provided with filter and one-way valve; Also be provided with flow control valve on the peripheral passage by silencing apparatus exhaust back pressure and the common control of suction tude air-intake negative-pressure; The inlet end of flow control valve is communicated with the outlet of silencing apparatus by the filter on the peripheral passage, and the outlet end of flow control valve is communicated with the import of suction tude through one-way valve, and the control end of flow control valve is communicated with suction tude.
Further invention is described flow control valve by main valve, pilot valve and comprises that the valve body of upper, middle and lower three parts forms; The going up of valve body, in two parts be combined to form the control valve pocket, in the valve body, two parts are combined to form the flow valve pocket down; Main valve and pilot valve are located at respectively among flow valve pocket and the control valve pocket, the circulating load of control waste gas; The pilot valve top is provided with spring, and the bottom is connected with the valve rod of main valve; The flow valve pocket is provided with suction port and air outlet, is communicated with the waste gas circulation path respectively and is connected engine air inlet tube by one-way valve; The control valve pocket is provided with the control pore that is communicated with suction tude, and establishes the air hole that communicates with atmosphere.
Described pilot valve is made up of the baffle plate of band vent, the spool and the diaphragm of band shape diaphragm, and baffle plate is connected with the valve rod of main valve, and both vents connect; Baffle plate, diaphragm and spool are superimposed successively from bottom to top, and its outer connects; Form unidirectional admission space between baffle plate and the diaphragm, form ventilation space between diaphragm and the spool; Baffle plate edge and center spool are provided with vent, also are provided with spring between spool and the diaphragm.
Its valve rod of described main valve is a cylinder, and the center is provided with the vent that is communicated with pilot valve.
Compared to existing technology, the utlity model has following advantage:
1, system design is reasonable, and the waste gas circulation path is provided with the flow control valve by silencing apparatus exhaust back pressure and the common control of suction tude air-intake negative-pressure; Waste gas imports engine air inlet tube through filter, flow control valve and one-way valve, reaches the purpose of effective minimizing exhaust gas discharging;
2, system's composition is simple in structure, and cost is lower, especially is fit to the exhaust gas recirculation utilization of motorcycle engine;
3, be convenient to installation, adjustment, reliable performance, and in light weight, can replace existing electrically-controlled valve fully, have the excellent popularization prospect.
Description of drawings
Fig. 1 is a structure principle chart of the present utility model;
Fig. 2 is the structural representation of the utility model flow control valve.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment 1: as shown in Figure 1, the motorcycle engine work system comprises Carburetor 8, motor 7, suction tude 2 and exhaust silencer 1, air enters Carburetor 8 through filter cleaner to be mixed with fuel oil, enter motorcycle engine 7 work by combustion through suction tude 2 again, tail gas is discharged in the atmosphere through exhaust silencer 1 outlet.The production of NOx is relevant with the combustion temperature of motor, and then the NOx production is many for the combustion temperature height; Otherwise, then few.
The utility model motorcycle engine gas recirculation system is between the import of 1 outlet of motorcycle engine silencing apparatus and suction tude 2 waste gas circulation path 3 to be set, and is provided with filter 4 and one-way valve 6 on the peripheral passage 3 successively; Also be provided with flow control valve 5 on the peripheral passage 3 by silencing apparatus 1 exhaust back pressure and the common control of suction tude 2 air-intake negative-pressures; The inlet end of flow control valve 5 is communicated with the outlet of silencing apparatus 1 by the filter 4 on the peripheral passage 3, and the end that goes out of flow control valve 5 is communicated with through the import of one-way valve 6 with suction tude 2, and the control end of flow control valve 5 is communicated with suction tude 2.When motor 7 work, waste gas is discharged from silencing apparatus 1 outlet, through filter 4 granulometric impurity is removed; Form recirculation through enter suction tude 2 again by flow control valve 5 and one-way valve 6 successively then, improve combustion temperature, effectively reduce the discharging of waste gas NOx.The effect of one-way valve 6 is to prevent that the combination gas in the suction tude 2 from leaking into from recirculation circuit in the flow control valve 5.Described filter 4, one-way valve 6 all adopt existing matured product to get final product.
Referring to Fig. 2, flow control valve 5 comprises main valve 11, pilot valve 12 and the valve body of being made up of upper, middle and lower three parts 10; The going up of valve body, in two parts 10.1,10.2 be combined to form control valve pocket 13, in the valve body, two parts 10.2,10.3 are combined to form flow valve pocket 14 down; Main valve 11 and pilot valve 12 are located at respectively among flow valve pocket 14, the control valve pocket 13, the discharge capacity of control waste gas; Pilot valve 12 tops are provided with spring 18, and the bottom is communicated with the valve rod of main valve 11; Flow valve pocket 14 is provided with suction port 15, air outlet 16, and suction port 15 links to each other with the silencing apparatus outlet by waste gas circulation path 3 and by filter 4, and air outlet 16 connects the suction tude 2 of motor by one-way valve 6; Control valve pocket 13 is provided with the control pore 17 that is communicated with suction tude 2, and establishes the air hole 19 that communicates with atmosphere, and air hole 19 places are provided with filter.Suction port 15 is a shoulder hole.
The working principle of flow control valve: when the load of motor hour, exhaust back pressure is less, and toxic emission is less, flow control valve can not overcome the elastic force of spring 18, at this moment, atmosphere enters control valve pocket 13 by air hole 19 and filter, enters control valve pocket 13 by vent 25 again, control valve pocket 13 and communicate with atmosphere this moment, and main valve plug 11 can not be opened.
When engine load increased, exhaust back pressure increased, and toxic emission increases, and overcame the elastic force of spring 18 through main valve plug 11 effects from the exhaust silencer exhaust gas discharged; Simultaneously, waste gas enters by forming unidirectional admission space between baffle plate 20 and the diaphragm 23 by vent 19, shutoff vent 25 will be pushed away on the diaphragm 23, make between spool 22 and the upper valve body 10.1 and form vacuum, at this moment, main valve (core) aperture is by the common control flow rate control valve 5 of negative pressure, the exhaust back pressure of suction tude 17, i.e. the aperture size of common control valve.The big more exhaust back pressure of loading is big more, and valve opening is big more, and the exhausted air quantity circulation is just big more.Otherwise load reduces, and exhaust back pressure also reduces, and valve opening reduces the exhausted air quantity circulation and just reduces.
Embodiment 2:(omits accompanying drawing) as different from Example 1, suction port 15 is outer little interior big tapered hole, main valve 11 its shapes of Pei Heing also match with it.By when exhaust back pressure is big, the elastic force that overcomes spring makes valve rod up push open, valve open; Along with load increases, exhaust back pressure increases, and the big more exhausted air quantity circulation of valve opening is just big more.Thereby, the circulating load of waste gas is proportional with the amount of combination gas, suitably select the spring of elasticity coefficient and the deformation quantity of diaphragm, just can guarantee that the circulating load of waste gas and the ratio of combination gas remain in the scope that needs, and have realized the automatic adjusting of waste gas circulation amount.
Claims (5)
1, motorcycle engine gas recirculation system is provided with waste gas circulation path (3) between the import of motorcycle engine silencing apparatus (1) outlet and suction tude (2), it is characterized in that: be provided with filter (4) and one-way valve (6) on peripheral passage (3) successively; Also be provided with flow control valve (5) on the peripheral passage (3) by silencing apparatus (1) exhaust back pressure and the common control of suction tude (2) air-intake negative-pressure; The inlet end of flow control valve (5) is communicated with the outlet of silencing apparatus (1) by the filter (4) on the peripheral passage (3), the outlet end of flow control valve (5) is communicated with through the import of one-way valve (6) with suction tude (2), and the control end of flow control valve (5) is communicated with suction tude (2).
2, ask 1 described gas recirculation system according to right, it is characterized in that: described flow control valve (5) comprises main valve (11), pilot valve (12) and the valve body of being made up of upper, middle and lower three parts (10); The going up of valve body, in two parts (10.1,10.2) be combined to form control valve pocket (13), in the valve body, two parts (10.2,10.3) are combined to form flow valve pocket (14) down; Main valve (11) and pilot valve (12) are located at respectively among flow valve pocket (14), the control valve pocket (13), the discharge capacity of control waste gas; Pilot valve (12) top is provided with spring (18), and the bottom is connected with the valve rod of main valve (11); Flow valve pocket (14) is provided with suction port (15), air outlet (16) are communicated with waste gas circulation path (3) respectively and are connected engine air inlet tube (2) by one-way valve (6); Control valve pocket (13) is provided with the control pore (17) that is communicated with suction tude (2), and establishes the air hole (19) that communicates with atmosphere.
3, gas recirculation system according to claim 2, it is characterized in that: described pilot valve (12) is made up of the baffle plate (20) of band vent, the spool (22) and the diaphragm (23) of band shape diaphragm (21), baffle plate (20) is connected with the valve rod of main valve plug (11), and both vents connect; Baffle plate (20), diaphragm (23) and spool (22) are superimposed successively from bottom to top, and its outer connects; Form unidirectional admission space between baffle plate (20) and the diaphragm (23), form ventilation space between diaphragm (23) and the spool (22); Baffle plate (20) edge and spool (22) center are provided with vent (25), also are provided with spring (24) between spool (22) and the diaphragm (23).
4, gas recirculation system according to claim 2 is characterized in that: described main valve (11) and valve rod thereof are cylinder, and the center is provided with the vent (26) that is communicated with pilot valve (12).
5, gas recirculation system according to claim 1 and 2 is characterized in that: inlet end (15) is outer little interior big shoulder hole or tapered hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201099617U CN2924035Y (en) | 2006-02-17 | 2006-02-17 | Waste-gas recirculation system of motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201099617U CN2924035Y (en) | 2006-02-17 | 2006-02-17 | Waste-gas recirculation system of motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2924035Y true CN2924035Y (en) | 2007-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201099617U Expired - Fee Related CN2924035Y (en) | 2006-02-17 | 2006-02-17 | Waste-gas recirculation system of motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2924035Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562281A (en) * | 2012-02-07 | 2012-07-11 | 上海交通大学 | Exhaust recirculating system controlled by exhaust pressure |
-
2006
- 2006-02-17 CN CNU2006201099617U patent/CN2924035Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562281A (en) * | 2012-02-07 | 2012-07-11 | 上海交通大学 | Exhaust recirculating system controlled by exhaust pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070718 Termination date: 20120217 |