CN2866869Y - Diaphragm secondary additional air supply valve for gasoline engine - Google Patents
Diaphragm secondary additional air supply valve for gasoline engine Download PDFInfo
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- CN2866869Y CN2866869Y CN 200620109850 CN200620109850U CN2866869Y CN 2866869 Y CN2866869 Y CN 2866869Y CN 200620109850 CN200620109850 CN 200620109850 CN 200620109850 U CN200620109850 U CN 200620109850U CN 2866869 Y CN2866869 Y CN 2866869Y
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Abstract
A diaphragm type secondary air gulp valve for petrol motor, comprising a valve cap with a negative-pressure connector, and a membrane, a valve handle, a valve plug as well as a valve body with an admitting port and a gas off-take. A elastic reset mechanism is arranged between the valve plug and the valve body, characterized in that the valve plug is arranged in the valve body and the guide channel communicated with the admitting port, the side frame of which is in matching with the valve port arranged on the side frame of the valve body, and the gas off-take on the valve body is connected with the valve port. A membrane arranged between the valve body and the valve plug separates the valve chamber formed by the valve plug, the valve plug, the valve cap into a negative-pressure chamber and a working chamber whose pressure is in normal conditions. The utility model, with the advantages of a simple construction and easy manufacture, convenient installation, low cost, good sealing reliability, air mass flow control to some extent and the likes, can solve the problem of overhigh air-fuel delivery ratio induced by the high speed oil scavenging of the motor and make the gas mixtures burn completely, reducing the amounts of harmful gases in the tail gas exhaust, inhibiting the happening of blast.
Description
(1) technical field
The utility model relates to a kind of petrol engine air aeration valve, particularly a kind of diaphragm type secondary air supplementing valve.
(2), background technique
As everyone knows, motorcycle gasoline engine is in running, the phenomenon that the air fuel ratio overrich of mixed gas can occur, this phenomenon causes like this: when the high engine speeds oil return, throttle opening reduces rapidly, because the hysteresis that engine speed reduces causes bigger negative pressure of moment, therefore, the phenomenon of moment gasoline air mixture ratio overrich occurs.Enter the air fuel ratio overrich of motor, it is insufficient to cause burning, this not only can make the concentration of harmful gases such as discharging CO, HC etc. increase, but also the oxygen more than needed in CO, HC tail gas and the outlet pipe of higher concentration is reacted, thus generation " blowing out " phenomenon.In order to overcome above-mentioned deficiency, now generally adopt and optimize Manufacturing Technology for Carburetors, the utility model patent that a kind of name is called " gasoline engine is with adding air induction system " is disclosed in CN87210412U, it is made up of vacuum relief valve, filter cleaner, conduit, filter cleaner is loaded on the import of vacuum relief valve, conduit one end is communicated with the outlet of vacuum relief valve, and conduit the other end tube wall has the hole, and the pipe closedtop closes.Wherein, the vacuum relief valve be by diaphragm 6, Returnning spring 10, valve rod, valve head, valve port 1 and bring mouthfuls 3 into, the valve body of outlet 11 constitutes, diaphragm is separated into vacuum chamber 7 and common pressure chamber 4 to valve pocket, valve rod is provided with the gas passage excessively that communicates with vacuum chamber 7, it is corresponding with import 3 to cross the gas feeder connection, and conduit 13 is communicated with the mixing chamber of Carburetor.Though this patent can solve the above problems, its complex structure, component are many, the manufacture cost height, and it can make the in-engine gasoline air mixture ratio of normal operation rare excessively, not only is easy to generate " blowing out " phenomenon, the shortcoming that also can cause engine output to reduce, be short of power.The utility model patent that a kind of name is called " a kind of motorcycle oil-saving purifier " is disclosed in CN2537828Y, in this patent, a kind of air cutoff valve is disclosed, it is made up of suction port seat 21, valve body 22, loam cake 23, valve film 24, poppet shaft 25, valve core spring 26 and valve plug 27, its suction port 37 communicates with atmosphere, the air outlet communicates with engine exhaust pipe 35 by an one-way valve (being leaf valve 16), pipe, and negative pressure pipe 28 communicates with engine intake 34; It utilizes the valve plug end face to seal valve port, and valve port is arranged on the air inlet seat.Though this air cutoff valve can reduce discharge of harmful gases, but also exist following deficiency: at first it is can not solve fully to blow out phenomenon, when partial combustion appearred in the mixed gas of motor, the waste gas that burns incompletely of discharge was easy to take place to burn once more and produce and blow out phenomenon with the air of mend; Another is the device that it can only be used for engine exhaust pipe is carried out tonifying Qi, and can not be used for engine air inlet tube is carried out tonifying Qi, its reason is that its suction port directly communicates with atmosphere, if to the engine air inlet tube tonifying Qi, introduced contaminants will enter motor, has a strong impact on the working life of motor; Last is that these air cutoff valve component are more, and for example it has a suction port seat that is abnormity, and valve port is positioned on the suction port seat, makes the body size of this air cutoff valve can not do too smallly, and complex structure, makes loaded down with trivial detailsly, thereby cost is higher; Simultaneously, this air cutoff valve is to the control flow rate of air or excessive, and tonifying Qi is too much; Flow is too small, the tonifying Qi deficiency.
(3), summary of the invention
The purpose of this utility model just provides the diaphragm type secondary air supplementing valve that a kind of petrol engine is used, when it is in the state of high speed oil return at motor, can carry out tonifying Qi to engine inlets, make mixed gas because of the appropriate fully burning of air fuel ratio proportioning, obviously reduce discharge of harmful gases, suppress the generation of " blowing out " phenomenon.
The purpose of this utility model is to realize by such technological scheme, it comprises the valve gap of band negative pressure joint, and diaphragm, valve rod, valve plug and the valve body of bringing gas port and air outlet channel into, be provided with flexible restoring organ between valve plug and the valve body, it is characterized in that: the guide channel that valve plug is arranged in valve body and is communicated with suction port, its sidewall matches with valve port on being arranged at body wall, air outlet channel on the valve body is connected with valve port, by valve gap, valve body, in the valve pocket that valve plug surrounds, the diaphragm that is arranged between valve body and the valve gap is separated into negative cavity and active chamber to valve pocket, and active chamber is atmospheric pressure state.Active chamber can be communicated with atmosphere, also can be communicated with suction port by vent on the valve plug or air vent, can be in atmospheric pressure state with the pressure that guarantees active chamber.
The utility model is to be assemblied in like this on the petrol engine: negative pressure joint and air outlet are all communicated with gas-entered passageway between the closure with the intake valve of motor by pipeline, suction port can be connected on the air-strainer, also can directly communicate, can also communicate with atmosphere by filter with ambient atmosphere.
The utility model is work like this: when motor is in the high speed oil return, the negative pressure that produces on the engine inlets makes between negative cavity and the active chamber and forms pressure difference, the active force to diaphragm that this pressure difference produces overcomes the effect of flexible restoring organ, the drive diaphragm moves up, the diaphragm that moves moves up along guide channel by the valve plug that valve rod drives in the valve body, communicate with suction port until air outlet channel, at this moment, under the effect of the negative pressure of engine inlets, clean fresh air is through suction port, guide channel, air outlet channel enters engine inlets, the mixed gas of dilution fuel overrich, make its air fuel ratio appropriate, sufficient combustion reduces discharge of harmful gases; When the pressure difference that forms between negative cavity and the active chamber is little when being not enough to overcome the elastic force of flexible restoring organ, flexible restoring organ drives diaphragm by valve rod and resets; When motorcycle is in normal operation following time, the gasoline air mixture ratio proportioning of motor is appropriate, sufficient combustion, at this moment, intake valve aperture on the motor is bigger, and the negative pressure of its gas-entered passageway is less relatively, forms the elastic force effect that pressure difference is not enough to overcome flexible restoring organ between negative cavity and the active chamber, cause the valve plug sidewall still to block valve port, the intake duct that has stoped air to enter motor carries out tonifying Qi.The utility model utilizes the sidewall of valve plug that valve port is sealed, because it is many that the sealing surface between them has increased, and do not produce mutual collision in working procedure between valve plug and the valve port, therefore, its sealing reliability is strong, has obviously prolonged working life of the present utility model.Compared with prior art, because the utility model lacks the suction port seat, and valve port is positioned on the valve body wall, make body size can be little a lot, not only simple in structure, it is convenient install and remove, is convenient to keep in repair, and easily manufactured, has obviously reduced manufacture cost.
Owing to adopted technique scheme, the utlity model has advantages such as simple in structure, easily manufactured, that assembling is convenient, sealing reliability strong, cost is lower, the problem of the air fuel ratio overrich that it produces in the time of can solving the high engine speeds oil return, make mixture combustion abundant, reduce discharge of harmful gas in tail gas, suppress " blowing out " phenomenon.
(4), description of drawings
Description of drawings of the present utility model is as follows:
Fig. 1 is first kind of embodiment's of the utility model a structural representation;
Fig. 2 is second kind of embodiment's of the utility model a structural representation;
Among the figure: 1. valve gap; 2. diaphragm; 3. valve rod; 4. valve plug; 5. suction port; 6. air outlet; 7. valve body; 8. guide channel; 9. negative cavity; 10. active chamber; 11. negative pressure joint; 12. Returnning spring; 13. vent; 14. air vent; 15. filter; 16. valve port;
(5), embodiment
Below in conjunction with drawings and Examples the utility model is done further indefiniteness explanation:
As Fig. 1, shown in 2, the utility model includes the valve gap 1 of band negative pressure joint 11, and diaphragm 2, valve rod 3, valve plug 4 and the valve body 7 of bringing gas port 5 and air outlet channel 6 into, be provided with flexible restoring organ between valve plug 4 and the valve body 7, it is characterized in that: the guide channel 8 that valve plug 4 is arranged in valve body 7 and is communicated with suction port 5, its sidewall matches with valve port 16 on being arranged at valve body 7 sidewalls, air outlet channel 6 on the valve body 7 is connected with valve port 16, by valve gap 1, valve body 7, in the valve pocket that valve plug 4 surrounds, the diaphragm 2 that is arranged between valve body 7 and the valve gap 1 is separated into negative cavity 9 and active chamber 10 to valve pocket, and active chamber 10 is atmospheric pressure state.
The utility model is to be assemblied in like this on the petrol engine: negative pressure joint 11 and air outlet 6 are all communicated with gas-entered passageway between the closure with the intake valve of motor by pipeline, suction port 5 can be connected on the air-strainer, also can directly communicate, can also communicate with atmosphere by filter 15 with ambient atmosphere.
The utility model is work like this: when motor is in the high speed oil return, when idling or little load operation, the negative pressure that produces on the engine inlets makes between negative cavity 9 and the active chamber 10 and forms pressure difference, the active force to diaphragm 2 that this pressure difference produces overcomes the effect of flexible restoring organ, driving diaphragm 2 moves up, the diaphragm 2 that moves moves up along guide channel 8 by the valve plug 4 that valve rod 3 drives in the valve body 7, communicate with suction port 5 until air outlet channel 6, at this moment, under the effect of the negative pressure of engine inlets, clean fresh air is through suction port 5, guide channel 8, air outlet channel 6 enters engine inlets, the mixed gas of dilution fuel overrich, make its air fuel ratio appropriate, sufficient combustion reduces discharge of harmful gases; When the pressure difference that forms between negative cavity 9 and the active chamber 10 is little when being not enough to overcome the elastic force of flexible restoring organ, flexible restoring organ resets by valve rod 3 drive diaphragms 2; When motorcycle is in normal operation following time, the gasoline air mixture ratio proportioning of motor is appropriate, sufficient combustion, at this moment, intake valve aperture on the motor is bigger, and the negative pressure of its gas-entered passageway is less relatively, forms the elastic force effect that pressure difference is not enough to overcome flexible restoring organ between negative cavity 9 and the active chamber 10, cause valve plug 4 still to block the air outlet, the intake duct that has stoped air to enter motor carries out tonifying Qi.The utility model utilizes the sidewall of valve plug 4 that valve port 16 is sealed, because it is many that the sealing surface between them has increased, and do not produce mutual collision in working procedure between valve plug 4 and the valve port 16, therefore, its sealing reliability is strong, has obviously prolonged working life of the present utility model.
As shown in Figure 1, 2, flexible restoring organ is to be with Returnning spring 12 on valve rod 3, and Returnning spring 12 1 ends are against on the valve body 7, and the other end is against on the valve plug 4.
As shown in Figure 1, valve plug 4 is for being the tubular valve plug, and the bottom of tubular valve plug is provided with the vent 13 that communicates with active chamber 10.The effect of vent 13 is in order to make the pressure in the active chamber 10 can be in atmospheric pressure state.
As shown in Figure 2, valve plug 4 is solid cylindrical plag, and cylindrical plag is provided with the air vent 14 that communicates with active chamber 10.The effect of air vent 14 is in order to make the pressure in the active chamber 10 can be in atmospheric pressure state.
As shown in Figure 1, 2, on the gas-entered passageway that guide channel 8 and suction port 5 constitute, can be provided with filter 15.In order to prevent that dust in air or impurity from entering in the motor, influence efficiency of engine, a filter 15 is set on the gas-entered passageway of aeration valve is used for filtered air, dust in air or impurity can not be entered in the motor.
Claims (5)
1. diaphragm type secondary air supplementing valve that petrol engine is used, include the valve gap (1) of band negative pressure joint (11), and diaphragm (2), valve rod (3), valve plug (4) and bring gas port (5) into and the valve body (7) of air outlet channel (6), be provided with flexible restoring organ between valve plug (4) and the valve body (7), it is characterized in that: the guide channel (8) that valve plug (4) is arranged in valve body (7) and is communicated with suction port (5), its sidewall matches with valve port (16) on being arranged at valve body (7) sidewall, the air outlet channel (6) of valve body (7) is connected with valve port (16), by valve gap (1), valve body (7), in the valve pocket that valve plug (4) surrounds, the diaphragm (2) that is arranged between valve body (7) and the valve gap (1) is separated into negative cavity (9) and active chamber (10) to valve pocket, and active chamber (10) is atmospheric pressure state.
2. the diaphragm type secondary air supplementing valve that petrol engine as claimed in claim 1 is used, it is characterized in that: flexible restoring organ is to be with Returnning spring (12) on valve rod (3), Returnning spring (12) one ends are against on the valve body (7), and the other end is against on the valve plug (4).
3. the diaphragm type secondary air supplementing valve that petrol engine as claimed in claim 1 or 2 is used is characterized in that: valve plug (4) is for being the tubular valve plug, and the bottom of tubular valve plug is provided with the vent (13) that communicates with active chamber (10).
4. the diaphragm type secondary air supplementing valve that petrol engine as claimed in claim 1 or 2 is used is characterized in that: valve plug (4) is solid cylindrical plag, and cylindrical plag is provided with the air vent (14) that communicates with active chamber (10).
5. the diaphragm type secondary air supplementing valve that petrol engine as claimed in claim 1 or 2 is used is characterized in that: guide channel (8) is provided with filter (15) with the gas-entered passageway that suction port (5) constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620109850 CN2866869Y (en) | 2006-01-25 | 2006-01-25 | Diaphragm secondary additional air supply valve for gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620109850 CN2866869Y (en) | 2006-01-25 | 2006-01-25 | Diaphragm secondary additional air supply valve for gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2866869Y true CN2866869Y (en) | 2007-02-07 |
Family
ID=37702574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620109850 Expired - Fee Related CN2866869Y (en) | 2006-01-25 | 2006-01-25 | Diaphragm secondary additional air supply valve for gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2866869Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103083180A (en) * | 2011-11-03 | 2013-05-08 | 江苏康诺医疗器械有限公司 | Feeding laryngeal mask |
| CN103603752A (en) * | 2013-10-14 | 2014-02-26 | 南宁明航节能科技有限公司 | Air heating type fuel economizer |
| CN110425306A (en) * | 2019-09-06 | 2019-11-08 | 李钢 | Ship methanol fuel flash steam negative pressure drives safety purification reuse means |
| CN110671172A (en) * | 2019-09-06 | 2020-01-10 | 李钢 | Methanol fuel outboard engine double-turbine supercharging closed-loop control efficient purification system |
-
2006
- 2006-01-25 CN CN 200620109850 patent/CN2866869Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103083180A (en) * | 2011-11-03 | 2013-05-08 | 江苏康诺医疗器械有限公司 | Feeding laryngeal mask |
| CN103603752A (en) * | 2013-10-14 | 2014-02-26 | 南宁明航节能科技有限公司 | Air heating type fuel economizer |
| CN103603752B (en) * | 2013-10-14 | 2015-09-02 | 南宁明航节能科技有限公司 | A kind of air heating formula fuel economizer |
| CN110425306A (en) * | 2019-09-06 | 2019-11-08 | 李钢 | Ship methanol fuel flash steam negative pressure drives safety purification reuse means |
| CN110671172A (en) * | 2019-09-06 | 2020-01-10 | 李钢 | Methanol fuel outboard engine double-turbine supercharging closed-loop control efficient purification system |
| CN110425306B (en) * | 2019-09-06 | 2024-04-05 | 李钢 | Methanol fuel flash steam negative pressure driving safety purification recycling device for ship |
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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: 20070207 |