CN103321725A - Motorcycle secondary air compensating valve - Google Patents
Motorcycle secondary air compensating valve Download PDFInfo
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- CN103321725A CN103321725A CN2012100817282A CN201210081728A CN103321725A CN 103321725 A CN103321725 A CN 103321725A CN 2012100817282 A CN2012100817282 A CN 2012100817282A CN 201210081728 A CN201210081728 A CN 201210081728A CN 103321725 A CN103321725 A CN 103321725A
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Abstract
The invention discloses a motorcycle secondary air compensating valve which comprises a valve body provided with an air inlet cavity, an air outlet cavity and a negative pressure cavity. An air inlet pipe, an air outlet pipe and a negative pressure pipe are respectively arranged on the air inlet cavity, the air outlet cavity and the negative pressure cavity; a valve plate is arranged in the air inlet cavity; a reed valve is mounted in the air outlet cavity; a film is arranged in the negative pressure cavity; the valve plate and the film are mounted at the two ends of a valve rod; the valve rod can move in the axial direction under the action of air pressure; the air inlet cavity is communicated with the air outlet cavity via a communication cavity; the two ends of the communication cavity are respectively opened and closed by the valve plate and the reed valve; a through hole is formed in the first partition wall of the valve body, which is used for spacing the air inlet cavity and the communication cavity; the through hole can still communicate the air inlet cavity and the communication cavity when the communication cavity is closed by the valve plate. The motorcycle secondary air compensating valve can enable the valve plate to more quickly close the communication cavity, timely closes the reed valve, solves the problem that oil is accumulated in the valve body because of exhaust countercurrent of an engine, facilitates timely volatilization of liquid gas in the valve body and enlargement of air compensating flow, and improves exhaust emission.
Description
Technical field
The present invention relates to a kind of secondary air compensation valve for motorcycle, belong to specifically motor exhaust purification technics field.
Background technique
What general domestic motorcycle generally adopted is the mechanical type Carburetor, and difficulty reaches national relevant emission standards so that the tail gas of motorcycle is arranged for this, for this reason, generally adopts secondary air-supplying device to reduce CO, HC, NO
XDischarge amount, by secondary air-supplementing valve ozone is incorporated in the engine cylinder head, the negative tube of secondary air-supplementing valve and engine charge end join, suction tude links to each other with air filter or other inlet air filtration system, steam outlet pipe connects with the exhaust branch pipe of motor, and the pulse negative pressure that produces when utilizing engine exhaust is come in good time to open or close inlet, outlet to reach the purpose of tonifying Qi.The valve body of existing secondary air compensation valve for motorcycle is provided with air-inlet cavity, outlet chamber and negative cavity, be respectively arranged with suction tude, steam outlet pipe and negative tube at air-inlet cavity, outlet chamber and negative cavity, into and out of being communicated with by communicated cavity between the air cavity, the two ends of communicated cavity are opened and closed by valve block and leaf valve respectively; When the engine charge end was negative pressure, the valve block in the air-inlet cavity was up, was communicated with suction tude and air-inlet cavity, and fresh air leads to outlet chamber by suction tude, air-inlet cavity and communicated cavity and enters in the exhaust branch pipe; When engine charge end negative pressure was excessive, the valve body wall that valve block continues between up and communicated cavity and the air-inlet cavity was fitted and partition air-inlet cavity and communicated cavity, to stop to the engine exhaust branch pipe tonifying Qi; When Vehicle Driving Cycle is in non-at the uniform velocity state, valve block in the air-inlet cavity can cut off air-inlet cavity and communicated cavity or suction tude regularly, but because the hysteresis quality of negative cavity responding engine causes the valve block start to lag behind, thereby the partition of air-inlet cavity and communicated cavity is postponed, the phase difference phenomenon appears, as shown in Figure 1, wherein curve A represents negative pressure, curve B is relative with negative pressure in theory flow of air supply, curve C is the flow of air supply that occurs because of the hysteresis quality of valve block start in the reality, and wherein △ ρ is the phase difference that causes; The existence of phase difference so that valve block in the time should cutting off air-inlet cavity and communicated cavity or suction tude and fail in time to cut off, so that fresh air continues to fill in the communicated cavity, this will cause leaf valve (one-way valve) can not in time close because of entering of fresh air at the direct draught of engine exhaust end, the leaf valve start sensitivity be affected, simultaneously, because can not in time closing to close at the direct draught of engine exhaust end, leaf valve strengthens the valve body inner product oil problem that reflux problem that engine exhaust brings and adverse current are brought, the timely volatilization that also is unfavorable for amassing the liquefaction water in valve body.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of secondary air compensation valve for motorcycle, it can effectively improve the sensitivity of the action of leaf valve in the secondary air-supplementing valve, in time close the reflux problem that leaf valve is brought when reducing engine exhaust, and helps the timely volatilization of the liquid gas in the valve body.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of secondary air compensation valve for motorcycle, it comprises the valve body that is provided with air-inlet cavity, outlet chamber and negative cavity, is being respectively arranged with into and out of tracheae and negative tube into and out of air cavity and negative cavity; Be provided with valve block in the described air-inlet cavity, leaf valve is installed in the outlet chamber, be provided with diaphragm in the negative cavity, valve block and diaphragm are installed in the two ends of valve rod, and valve rod can move axially under the effect of air pressure; Described into and out of being communicated with by communicated cavity between the air cavity, the two ends of communicated cavity are opened and closed by valve block and leaf valve respectively, the first next door that described valve body is used for partition air-inlet cavity and communicated cavity is provided with through hole, and through hole also can be communicated with air-inlet cavity and communicated cavity when valve block sealing communicated cavity.
As improvement of the technical scheme, described through hole is positioned at the outside of described valve block.
As further improvement in the technical proposal, described valve body has three cavitys, end at described suction tude, steam outlet pipe and negative tube is respectively arranged with bowl-shaped hoop, and described bowl-shaped hoop and cavity are installed oppositely and formed described air-inlet cavity, outlet chamber and negative cavity.
Further, the bowl-shaped hoop compression fit of described suction tude by being arranged on suction tude one end is on the inwall of air-inlet cavity.
Further, described valve body is provided with the second next door, and the second next door cuts off negative cavity and communicated cavity, and valve rod is bearing on the second next door, and the valve rod between the second next door and valve block is set with stage clip.
Further, be set with seal ring on the described valve block, described seal ring has upper sealing lip and the lower seal lip of the upper and lower port of the described air-inlet cavity of sealing.
The invention has the beneficial effects as follows: the present invention is by the setting of through hole on the valve body, so that air-inlet cavity and communicated cavity also can be communicated when the lower negative pressure state cuts off by valve block, so that valve block can seal communicated cavity faster, cause the secondary air compensating valve leaf in time to close, thereby reduced the valve volume of oil problem that reflux problem that engine exhaust brings and reflux problem are brought; Simultaneously, after air-inlet cavity and communicated cavity are communicated with, also be convenient to be walked by timely volatilization with the tonifying Qi air-flow based on the liquefaction water in the valve body; In addition, being arranged so that of this through hole can increase the gas flow of secondary air-supplementing valve path when the communicated cavity air inlet, thereby strengthens the oxygenation efficiency to waste gas, reduces the pollution to atmosphere.The present invention is simple and reasonable, and operating procedure is simple.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the phase difference schematic diagram of secondary air-supplementing valve;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the plan view of Fig. 2;
Fig. 4 is the sectional view in D-D cross section among Fig. 3.
Embodiment
With reference to Fig. 1 ~ Fig. 4, a kind of secondary air compensation valve for motorcycle of the present invention, it comprises the valve body 1 that is provided with air-inlet cavity 11, outlet chamber 12 and negative cavity 13, into and out of air cavity 11,12 and negative cavity 13 be respectively arranged with into and out of tracheae 2,3 and negative tube 4, into and out of tracheae 2,3 and negative tube 4 consisted of by tubular body and the bowl-shaped hoop that is arranged on tubular body one end respectively, tubular body and bowl-shaped hoop are one-body molded, have three cavitys on the valve body 1, the opposed installation of bowl-shaped hoop and cavity forms described air-inlet cavity 11, outlet chamber 12 and negative cavity 13; Suction tude 2 adopts the pressing process compression fit on the inwall of air-inlet cavity 11 by the bowl-shaped hoop that is arranged on suction tude 2 one ends, also can adopt the gluing sealing means bowl-shaped hoop to be connected to the port of valve body 1 air-inlet cavity 11, suction tude 2 connects air filter or other inlet air filtration system links to each other, steam outlet pipe 3 and negative tube 4 are by adopting screw 21 to be fastened on the valve body 1 with its bowl-shaped hoop that links to each other respectively, and steam outlet pipe 3 and negative tube 4 be sending and receiving engine exhaust arm and engine charge ends respectively; Be provided with valve block 5 in the described air-inlet cavity 11, leaf valve 6 is installed in the outlet chamber 12, be provided with diaphragm 7 in the negative cavity 13, valve block 5 and diaphragm 7 are installed in the two ends of valve rod 8, described valve body 1 is provided with the first next door 15 and the second next door 17, the first next door 15 is used for cutting off air-inlet cavity 11 and communicated cavity 14, the second next door 17 cuts off negative cavity 13 and communicated cavity 14, valve rod 8 is bearing on the second next door 17, it is rear with valve block 5 connections that one end of valve rod 8 passes the first next door 15, it is rear with diaphragm 7 connections that the other end of valve rod 8 passes the second next door 17, valve rod 17 between the second next door 17 and valve block 5 is set with stage clip 9, can valve rod 8 be positioned at valve block 5 above locate to install a lining that is used for apical grafting stage clip 9, valve rod 8 can move axially under the effect of air pressure, thereby opens and closes two ports of air-inlet cavity; Described into and out of being communicated with by communicated cavity 14 between the air cavity 11,12, the two ends of communicated cavity 14 are opened and closed by valve block 5 and leaf valve 7 respectively, be shaped with through hole 16 on the first next door 15 of described valve body 1, when sealing communicated cavity 14 when valve block 5 up applyings with the first next door 15, through hole 16 also can be communicated with air-inlet cavity 11 and communicated cavity 14.Consider that through hole 16 need be communicated with air-inlet cavity 11 and communicated cavity 14 when valve block 5 sealing communicated cavity 14, through hole 16 preferably is arranged on the outside of valve block 5, and to add the air flow passing rate, as shown in Figure 4, through hole 16 is positioned at the first next door 15 in the annular region of (Y-X)/2.The size and number of through hole 16 can be adjusted according to the difference of engine model or flow.
In order to improve the sealability of valve block 5, be socketed with seal ring 10 at described valve block 5, described seal ring 10 has upper sealing lip and the lower seal lip of the described air-inlet cavity 11 upper and lower ports of sealing.
The working principle of secondary air compensation valve for motorcycle of the present invention is such: when engine operation, inlet end produces negative pressure, this moment is because external atmosphere pressure is large than the inlet end pressure of motor, barometric pressure just can promote the 8 upwards liftings of valve block 5 actuate valve stem, valve block 5 is away from the suction port of suction tude 2, fresh air enters into air-inlet cavity 11, the pressure that 9 pairs of valve blocks of the suction that negative pressure produces diaphragm 7 in negative cavity 13 and stage clip 5 produce balances each other, valve block 5 is not against on the port of communicated cavity 14, fresh air part in the air-inlet cavity 11 enters into outlet chamber 12 by communicated cavity 14 at this moment, another part leads in the communicated cavity 14 by through hole 16 and enters into outlet chamber 12, as shown in Figure 4, the arrow in the valve body 1 represents air flow.
When Vehicle Driving Cycle is in non-at the uniform velocity state, valve block 5 in the air-inlet cavity 11 can cut off air-inlet cavity 11 and communicated cavity 14 or suction tude 2 regularly, and the setting of through hole 16, can be so that when valve block 5 sealing communicated cavity 14, air in the communicated cavity 14 can be discharged by through hole 16, indirectly guide in the communicated cavity 14 to form an airflow direction, so that the air in the communicated cavity 14 reduces the resistance of valve block 5, can accelerate valve block 5 sealing communicated cavitys 14; When valve block 5 was opened communicated cavity 14, fresh air can enter from through hole 16 in the communicated cavity 14 in advance, as shown in Figure 1, namely increases the flow of Q1, reduces the flow of Q2, thereby reduces the phase difference of valve block 5.
In addition, when outlet chamber 12 tonifying Qi, in conventional art, on valve body 1, do not offer the structure that is communicated with air-inlet cavity 11 and outlet chamber 12 through holes 16, arranging of through hole 16 increased the flow of air supply that is added in the outlet chamber 12, strengthened the oxidation to waste gas in the motor, improve the discharging of waste gas, reduced the pollution to atmosphere.
Simultaneously, in that time of engine exhaust, consider that the hysteresis quality because of valve block 5 causes valve block 5 to fail in time to seal communicated cavity 14 so that communicated cavity 14 continues tonifying Qi, cause the actual pressure in the communicated cavity 14 to be higher than theoretical pressure, hindering leaf valve 6 closes timely, thereby the exhaust meeting of motor enters into communicated cavity 14 by steam outlet pipe 3, the air that the setting of through hole 16 is convenient in the communicated cavity 14 is in time discharged from through hole 16, reduce the impact that communicated cavity 14 Airs are closed leaf valve 6, so that leaf valve 6 can cut out when through hole 16 is not set in advance, reduce the flow that engine exhaust enters into communicated cavity 14, thereby reduced the valve volume of oil problem that reflux problem that engine exhaust brings and reflux problem are brought; Also be convenient to be walked by timely volatilization with the tonifying Qi air-flow based on the liquefaction water in the valve body.
When the pressure in the negative cavity 13 forwarded malleation to by negative pressure gradually, negative pressure reduced the suction of diaphragm 7, and valve rod 8 and valve block 5 reset under the effect of stage clip 9 gradually, was enclosed within the lower seal lip sealing suction port on the valve block 5 after resetting.
The above be better embodiment of the present invention, but the present invention is not limited to above-described embodiment, as long as it reaches technique effect of the present invention with any same or similar means, all should fall within protection scope of the present invention.
Claims (6)
1. secondary air compensation valve for motorcycle, comprise the valve body (1) that is provided with air-inlet cavity (11), outlet chamber (12) and negative cavity (13), be respectively arranged with into and out of tracheae (2,3) and negative tube (4) into and out of air cavity (11,12) and negative cavity (13); Be provided with valve block (5) in the described air-inlet cavity (11), leaf valve (6) is installed in the outlet chamber (12), be provided with diaphragm (7) in the negative cavity (13), valve block (5) and diaphragm (7) are installed in the two ends of valve rod (8), and valve rod (8) can move axially under the effect of air pressure; Describedly be communicated with by communicated cavity (14) into and out of between the air cavity (11,12), the two ends of communicated cavity (14) are opened and closed by valve block (5) and leaf valve (7) respectively, it is characterized in that: the first next door (15) that described valve body (1) is used for partition air-inlet cavity (11) and communicated cavity (14) is provided with through hole (16), and through hole (16) also can be communicated with air-inlet cavity (11) and communicated cavity (14) when valve block (5) sealing communicated cavity (14).
2. secondary air compensation valve for motorcycle according to claim 1, it is characterized in that: described through hole (16) is positioned at the outside of described valve block (5).
3. secondary air compensation valve for motorcycle according to claim 1 and 2, it is characterized in that: described valve body (1) has three cavitys, end at described suction tude (2), steam outlet pipe (3) and negative tube (4) is respectively arranged with bowl-shaped hoop, and described bowl-shaped hoop and cavity are installed oppositely and formed described air-inlet cavity (11), outlet chamber (12) and negative cavity (13).
4. secondary air compensation valve for motorcycle according to claim 3 is characterized in that: the bowl-shaped hoop compression fit of described suction tude (2) by being arranged on suction tude (2) one ends is on the inwall of air-inlet cavity (11).
5. secondary air compensation valve for motorcycle according to claim 1 and 2, it is characterized in that: described valve body (1) is provided with the second next door (17), the second next door (17) cuts off negative cavity (13) and communicated cavity (14), valve rod (8) is bearing on the second next door (17), and the valve rod between the second next door (17) and valve block (5) is set with stage clip (9).
6. secondary air compensation valve for motorcycle according to claim 1 and 2 is characterized in that: be set with seal ring (10) on the described valve block (5), described seal ring (10) has upper sealing lip and the lower seal lip of the upper and lower port of sealing described air-inlet cavity (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210081728.2A CN103321725B (en) | 2012-03-23 | 2012-03-23 | Secondary air compensation valve for motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210081728.2A CN103321725B (en) | 2012-03-23 | 2012-03-23 | Secondary air compensation valve for motorcycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103321725A true CN103321725A (en) | 2013-09-25 |
| CN103321725B CN103321725B (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210081728.2A Active CN103321725B (en) | 2012-03-23 | 2012-03-23 | Secondary air compensation valve for motorcycle |
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| Country | Link |
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| CN (1) | CN103321725B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104024597A (en) * | 2012-05-31 | 2014-09-03 | 伊格尔工业股份有限公司 | Valve device and secondary air introduction device |
| CN111448632A (en) * | 2017-12-20 | 2020-07-24 | 日本贵弥功株式会社 | Sealing plate, capacitor, and method for manufacturing sealing plate |
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| CN2620095Y (en) * | 2003-02-27 | 2004-06-09 | 书元机械企业(昆山)有限公司 | Secondary air leading-in device for motorcycle engine |
| EP1462624A1 (en) * | 2003-03-22 | 2004-09-29 | Pierburg GmbH | Secondary air valve |
| CN1732332A (en) * | 2002-12-26 | 2006-02-08 | 株式会社三国 | Diaphragm air valve and secondary air-controlling device for internal combustion engine |
| CN101487410A (en) * | 2009-02-13 | 2009-07-22 | 重庆隆鑫机车有限公司 | Secondary air compensating valve for motor vehicle |
| CN202132089U (en) * | 2011-06-27 | 2012-02-01 | 宁波利凯特环保科技有限公司 | Secondary air compensating valve for motorcycle |
| CN202544976U (en) * | 2012-03-23 | 2012-11-21 | 江门市大长江集团有限公司 | Secondary air control valve for motorcycle |
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2012
- 2012-03-23 CN CN201210081728.2A patent/CN103321725B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1732332A (en) * | 2002-12-26 | 2006-02-08 | 株式会社三国 | Diaphragm air valve and secondary air-controlling device for internal combustion engine |
| CN2620095Y (en) * | 2003-02-27 | 2004-06-09 | 书元机械企业(昆山)有限公司 | Secondary air leading-in device for motorcycle engine |
| EP1462624A1 (en) * | 2003-03-22 | 2004-09-29 | Pierburg GmbH | Secondary air valve |
| CN101487410A (en) * | 2009-02-13 | 2009-07-22 | 重庆隆鑫机车有限公司 | Secondary air compensating valve for motor vehicle |
| CN202132089U (en) * | 2011-06-27 | 2012-02-01 | 宁波利凯特环保科技有限公司 | Secondary air compensating valve for motorcycle |
| CN202544976U (en) * | 2012-03-23 | 2012-11-21 | 江门市大长江集团有限公司 | Secondary air control valve for motorcycle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104024597A (en) * | 2012-05-31 | 2014-09-03 | 伊格尔工业股份有限公司 | Valve device and secondary air introduction device |
| CN111448632A (en) * | 2017-12-20 | 2020-07-24 | 日本贵弥功株式会社 | Sealing plate, capacitor, and method for manufacturing sealing plate |
| CN111448632B (en) * | 2017-12-20 | 2022-09-16 | 日本贵弥功株式会社 | Sealing plate, capacitor, and method for manufacturing sealing plate |
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| Publication number | Publication date |
|---|---|
| CN103321725B (en) | 2016-06-01 |
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