CN1120292C - Secondary air supply device of exhaust system of motorbike - Google Patents
Secondary air supply device of exhaust system of motorbike Download PDFInfo
- Publication number
- CN1120292C CN1120292C CN 00106963 CN00106963A CN1120292C CN 1120292 C CN1120292 C CN 1120292C CN 00106963 CN00106963 CN 00106963 CN 00106963 A CN00106963 A CN 00106963A CN 1120292 C CN1120292 C CN 1120292C
- Authority
- CN
- China
- Prior art keywords
- control valve
- air
- quantity control
- valve
- air quantity
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
-
- 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
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
Abstract
To shorten a conduit for guiding secondary air from an air control valve to an engine to simplify the arrangement route of the conduit by arranging the air control valve to be supported by the cylinder head or head cover of the engine on the side of the cylinder head or head cover. In a scooter type vehicle, an air cleaner connected to an engine through a carbureter is connected to an exhaust port through an air control valve 42 and an outlet pipe 82. The air control valve 42 controls the secondary air feed quantity of an exhaust system by opening and closing a valve element 85 by the displacement of a diaphragm 73 based on the difference between the pressure of a first pressure chamber 74 for introducing the air pressure in the downstream over the valve 42 and the pressure of a second pressure chamber 75 for introducing the intake negative pressure of the engine. A mount rubber 89 is installed to the upper part of the valve housing 69 of such an air control valve 42, and the air control valve 42 is supported by a stay fastened to the head cover of the engine through the mount rubber 89.
Description
The present invention relates to have the vent systems secondary air-supply device of the motor bike of controlling the air quantity control valve that feeds to the secondary air confession amount that is equipped on the engine's exhaust system on the framework of body.
Supply with the motor bike vent systems secondary air-supply device of the secondary air be used for purifying exhaust gas gas to engine's exhaust system, such as on No. 2700941 communique of day patent etc., making known publicly.
In the vent systems secondary air-supply device of in above-mentioned communique, being showed, just showed the formation that secondary air is supplied to vent systems by needle spring plate valve [リ-De man's cap used in ancient times], do not speak of the air quantity control valve, and the air quantity control valve must be arranged in order to control the secondary air delivery volume, will be away from the such air quantity control valve of the position configuration of motor, must set the conduit that is used for importing to motor the bigger pipe of the diameter of air etc. again from the air quantity control valve, not only the length of conduit is elongated, and owing to must make the path that sets of conduit become complicated at the aforementioned conduit of narrow spatial configuration.
Given this present invention makes, and its purpose is to provide the distance doing one's utmost to shorten from the air quantity control valve to motor, catheter length is shortened and simplified the vent systems secondary air-supply device that conduit sets the motor bike in path.
For achieving the above object, motor bike vent systems secondary air-supply device of the present invention has the air quantity control valve that control feeds to the secondary air delivery volume of the engine's exhaust system that is equipped on the framework of body, it is characterized in that, disposing the aforementioned air quantity control valve that is supported on this cylinder head or the housing at the cylinder head of aforementioned motor or a side of housing, above-mentioned air quantity control valve be by its barrier film corresponding to import than this air quantity control valve more the pressure of first pressure chamber of the air in downstream side and the difference of pressure of second pressure chamber that imported the intake negative-pressure of motor carry out deflection and make valve body carry out on-off action, control the structure of the secondary air delivery volume of vent systems thus.
If take such formation, can dispose the air quantity control valve near motor ground as far as possible, and can shorten the length that imports the conduit of secondary air from the air quantity control valve to motor as far as possible; Simultaneously, but simplifying catheter sets the path.
In addition, the invention as recording and narrating by claim 2 is characterized in that, requires at aforesaid right on the basis of 1 invention of putting down in writing, and by rubber parts is installed aforementioned air quantity control valve is supported in the support that is attached at aforementioned cylinder head or housing.Constitute as complying with, the vibration that can avoid motor one side directly acts on the air quantity control valve; And help to improve the durability of air quantity control valve.
Fig. 1 is the side view of small size motorcycle; Fig. 2 be omitted Fig. 1 under the state of containing box and fuel tank 2 to view; Fig. 3 is the enlarged side view of air-strainer; Fig. 4 is the 4-4 sectional view of Fig. 3; Fig. 5 be Fig. 2 want portion's enlarged view; Fig. 6 is the amplification sectional arrangement drawing of air quantity control valve.
Bottom borrows the one embodiment of the invention shown in the accompanying drawing that example of the present invention is described.
Fig. 1～6 show one embodiment of the invention.Fig. 1 is the side view of small size motorcycle; Fig. 2 be omitted Fig. 1 under containing box and the fuel tank state 2 to view; Fig. 3 is the enlarged side view of air-strainer; Fig. 4 is the 4-4 sectional view of Fig. 3; Fig. 5 be Fig. 2 want portion's enlarged view; Fig. 6 is the amplification longitudinal section of air quantity control valve.
At first, on Fig. 1, have by the anterior framework 11 of cast forms such as aluminum alloy, by cast form such as aluminum alloy and be linked to the rear portion framework 12 of anterior framework 11 rear ends, constitute and be linked to the auxiliary frame 13 of rear portion framework 12 rear ends by the processing of metal tubulation as the framework of body F of the small size motorcycle of motor bike.
But forwardly supporting to steering the front fork 17 of crossing over front-wheel WF in the pipe portion 14 of the front end of framework 11.The lower end of aforementioned front fork 17 is disposed at the place ahead of the axletree 18 of front-wheel WF, and an end of connecting rod 19 is connected in the lower end of front fork 17, and its other end is connected on the aforementioned axletree 18; Between the intermediate portion of front fork 17 above-below direction intermediate portions and connecting rod 19, be provided with anterior bumper 20.In addition, linking steering handle 21 in the upper end of front fork 17.
With reference to Fig. 2,, can joltily be supported on the intermediate portion of the fore-and-aft direction of rear portion framework 12 by vibrationproof connecting rod 22 in the lump by the motor E and the power unit P that the stepless speed changer M that is disposed at trailing wheel WR left side constitutes of the front side that is disposed at trailing wheel WR.Motor E for example is towards car body the place ahead and water-cooled single cylinder 4 two-stroke engines of approximate horizontal ground configuration with cylinder; Stepless speed changer M for example is the belt type variable-speed motor.
Rear axle at power unit P is supporting trailing wheel WR; Between the rear portion of power unit P and rear portion framework 12, be provided with back buffer parts 23.The air-strainer 24 of the side, top that is disposed at trailing wheel WR is installed at the rear portion of power unit P, and this air-strainer 24 is connected with motor E by vaporizer 25.In addition, derivation extends out to the right side side of trailing wheel WR from motor E from the outlet pipe 26 of the exhaust gas that motor E discharges, and this outlet pipe 26 is connected with the muffler 27 that is configured in trailing wheel WR right side.Rotatably support support 28 on motor E; Disposing radiator 34 on the right side of power unit P.
The containing box 29 that can take in helmet etc. is disposed at aforementioned motor E and vaporizer 25 tops and is bearing in above the intermediate portion of rear portion framework 12; Fuel tank 30 at auxiliary frame 13 upper supports.
Framework of body F is covered by synthetic resin system vehicle body cover 31, and this vehicle body cover 31 has: legging 31a, the driver who covers leg the place ahead of driver place the pedal bottom plate 31b that links to each other with legging 31a bottom, the below that covers pedal bottom plate 31b and the following cover 31c that links to each other with pedal bottom plate 31b with legging 31a that pin uses, with pedal bottom plate 31b with cover down that 31c links to each other and from the side cover 31d of both sides covering body tail.
The fuel tank 30 that is supported on the major part of the containing box 29 on the rear portion framework 12 and is supported on the auxiliary frame 13 is covered by above-mentioned side cover 31d; The vehicle seat 32 that can be covered with containing box 29 from the top can be installed on the top of side cover 31d with opening and closing.In addition, the fuel that had of fuel tank 30 injects and is disposing from the top of side cover 31d with cap 30a with highlighting upward.
Vaporizer 25 is disposed between motor E and the containing box 29 in the place ahead of air-strainer 24; One end of synthetic resin system first sucking pipe 35 is connected with air-strainer 24, and the other end is connected with vaporizer 25; Intermediate portion at first sucking pipe 35 is connecting resonator [レ ゾ ネ-/resonator] 36.In addition, an end of second sucking pipe 37 links to each other with vaporizer 25, and the other end links to each other with the cylinder head 38 of motor E.
On the housing 39 that is incorporated into aforementioned cylinder head 38, be provided be located at cylinder head 38 in the needle spring plate valve 40 that is connected of exhaust port (not shown).In addition, aforementioned air-strainer 24 is connected with aforementioned needle spring plate valve 40 with second conduit 43 by first conduit 41, air quantity control valve 42.
In Fig. 3 and Fig. 4, the filter cleaner cover 44 of air-strainer 24 is by forming in conjunction with plastic first and second housing structure 45,46.First housing section 45 is that one has big housing section 45a and the 45b of small shell portion forms.Wherein, big housing section 45a is bowl-shape; It is bowl-shape and littler than big housing section 45a that the 45b of small shell portion also is, and open wide to same direction with big housing section 45a.Second housing structure 46 is that one has big housing section 46a and the 46b of small shell portion.Wherein, big housing section 46a is bowl-shape, be used for keeping the peripheral portion of the retaining member 49 of filter element [Network リ-Na エ レ メ Application ト] 48 to be held on and the opening end of the big housing section 45a of first housing structure 45 between; The 46b of small shell portion is bottom tube-like, and the 45b of small shell portion of it and first housing structure 45 is chimeric.And big housing section 45a, the 46a of first and second housing structure 45,56 are by a plurality of bolt components 50 ... link up mutually.
In addition, second housing structure 46 is provided with the negative pressure take-off pipe 54 that communicates with first purifying chamber 52, and this negative pressure take-off pipe 54 is connected on the vaporizer 25.
Dead end at the 46b of small shell portion of second housing structure 46 is being connected with the cardinal extremity that links post 56 integratedly; And the slotting bolt component 57 that leads to the 45b of small shell portion of first housing structure 45 in this top screw-thread fit that links post 56, whereby 45b of small shell portion and 46b are mutually combined.
Establishing a plurality of teats 58 in that the inner side surface of the 45b of small shell portion, 46b is prominent ..., 59 ..., the peripheral portion that passes the filter element 60 of aforementioned binding post 56 is held in aforementioned teat 58 ..., 59 ... between.Between the 45b of small shell portion of this filter element 60 and first housing structure 45, formed the not second also little purifying chamber 61 not of the capacity of purifying chamber 51 of Capacity Ratio aforementioned first; And between the 46b of small shell portion of the filter element 60 and second housing structure 46, formed the second also little purifying chamber 62 of 52 capacity, aforementioned first purifying chamber of Capacity Ratio.
On the 45b of small shell portion under shed be provided with in order to air is imported second air leading-in conduit 63 of purifying chamber 61 not from the outside.The connecting tube 64 and second purifying chamber 62 that link to each other with an end of first conduit 41 (this first conduit 41 links to each other with air quantity control valve 42) are located on the 46b of small shell portion in the earthing mutually.That is, the importing second not air of purifying chamber 61 is cleaned by filter element 60 arrival second purifying chamber 62 1 sides, then imports air quantity control valve 42.
In Fig. 5, air quantity control valve 42 is disposed at the side of housing 39 in a side relative with the igniter plug 67 that is installed on cylinder head 38; By support 68 supportings that are linked to housing 39.
In Fig. 6, the valve chest 69 of air flow control valve 42 is made of housing body 70, lower cover 71, upper cap 72.Wherein, housing body 70 is formed by synthetic resin; Lower cover 71 also is a synthetic resin system, and deposited in the bottom of housing body 70 with methods such as ultrasonic wave coatings; Upper cap 72 is a metallic, and is incorporated into the top of housing body 70 with method rivet clasps such as ultrasound rivet clasps, and the peripheral portion of barrier film 73 is held between it and the housing body 70.
Between housing body 70 and barrier film 73, formed first pressure chamber 74; Between upper cap 72 and barrier film 73, formed second pressure chamber 75.And on upper cap 72, be integrally formed with connecting tube 76.One end of negative pressure catheter 77 is connected with connecting tube 76, and the other end is connected in the centre of second sucking pipe 37 that links vaporizer 25 and motor E.
Having formed valve chamber 78, one ends in housing body 70 and 71 of lower cover is located on the body shell 70 valve opening 79 of these valve chamber 78 openings.In addition, the next door 80 that separates 74 of the other end of valve opening 79 and first pressure chambers is located on the housing body 70, and the intercommunicating pore 81 that is communicated with 79 of first pressure chamber 74 and valve openings is being set on the next door 80.Have again, on housing body 70, be provided with the outer pipe 82 that the inner is opened on the intermediate portion inner face of valve opening 79 integratedly, on this outer pipe 82, connecting aforementioned second conduit 43.
One is being connected with the cardinal extremity with the coaxial guide cylinder 83 of valve opening 79 on aforementioned next door 80, and an end is connected with in the valve shaft 84 of barrier film 73 central parts hermetic and can pass in the guide cylinder 83 with moving axially; Adorning the valve body 85 that is accommodated in the valve chamber 78 from the protuberance of the outstanding valve shaft 84 in the top of guide cylinder 83.This valve body 85 can interdict between valve opening 79 and the valve chamber 78 on the valve seat 86 of the open end periphery that is located in valve chamber 78 1 sides that are formed at valve opening 79 time; Be provided with between next door 80 and the valve body 85 to making lift off a seat 86 direction of valve body 85 produce the Returnning spring 87 of elastic force.
On lower cover 71, be wholely set and valve chamber 78 inlet communicating pipes 88, one end of aforementioned first conduit 41 is connected with the connecting tube 64 of aforementioned air-strainer 24, and be configured by the left side of vaporizer 25 and the place ahead of second sucking pipe 37, its other end then is connected with this inlet duct 88.
In such air quantity control valve 42, corresponding to importing than this air quantity control valve 42 pressure poor of pressure and second pressure chamber 75 of the intake negative-pressure of importing motor E of first pressure chamber 74 of the air pressure in downstream side more, barrier film 73 produces distortion, because its distortion, valve body 85 carries out on-off action, is the secondary air delivery volume of may command vent systems thus.
Next illustrates the effect of present embodiment.Control the air quantity control valve 42 of the secondary air delivery volume of the vent systems that feeds to motor E, be supported on the housing 39 with support 68 by rubber parts 89 is installed, and be disposed at a side of this housing 39.Thereby, can with air quantity control valve 42 as far as possible near motor E be configured, can shorten greatly and will import the length of second conduit 43 that is configured in the needle spring plate valve 40 on the motor E housing 39 from the secondary air of air quantity control valve 42, simultaneously, the path that sets of second conduit 43 is oversimplified.
And, owing to air quantity control valve 42 is supported in the support 68 that is attached at housing 39, can avoid the vibration of motor E one side to directly act on the air quantity control valve 42 by rubber parts 89 is installed, help to improve the durability of air quantity control valve.
Embodiments of the invention more than have been described in detail in detail, but the present invention is not limited to the foregoing description, in not breaking away from the scope of the present invention that claim records and narrates, can carries out all design alterations.
For example, in the above-described embodiments, air quantity control valve 42 is supported on the housing 39, and is disposed at a side of this housing 39; And be supported on the side that air quantity control valve 42 on the housing 39 also can be disposed at cylinder head 38; Also can be that the air quantity control valve 42 that will be supported on the cylinder head 38 is disposed at a side of housing 39 or a side of cylinder head 38.
In addition, in the above-described embodiments, needle spring plate valve 40 is disposed on the housing 39, but also the air quantity control valve can be constituted the form of built-in needle spring plate valve.
As mentioned above,, the air quantity control valve can be disposed, can shorten the length that the secondary air that the air quantity control valve is come imports the conduit of motor greatly as far as possible near motor as the invention of recording and narrating according to claim 1; The conduits configurations path is simplified.
In addition, as the invention of recording and narrating according to claim 2, can avoid the vibration of motor one side directly to affact on the air quantity control valve; Help to improve the durability of air quantity control valve.
Claims (2)
1. the vent systems secondary air-supply device of a motor bike, this motor bike vent systems secondary air-supply device has control and supplies toward the air quantity control valve (42) of the secondary air delivery volume of the vent systems that is equipped on the motor (E) on the framework of body (F), it is characterized in that, side at cylinder head (38) or the housing (39) of aforementioned motor (E), disposing the aforementioned air quantity control valve (42) that is supported on this cylinder head (38) or the housing (39), above-mentioned air quantity control valve (42) be its barrier film (73) corresponding to import than this air quantity control valve (42) more the pressure of first pressure chamber (74) of the air in downstream side and the difference of pressure of second pressure chamber (75) that has imported the intake negative-pressure of motor E carry out deflection and make valve body (85) carry out on-off action, control the structure of the secondary air delivery volume of vent systems thus.
2. by the described motor bike vent systems of claim 1 secondary air-supply device, its feature exists, and aforementioned air quantity control valve (42) is supported in the support (68) that is attached on aforementioned cylinder head (38) or the housing (39) by rubber parts (89) is installed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12131899A JP4344423B2 (en) | 1999-04-28 | 1999-04-28 | Motorcycle |
| JP121318/1999 | 1999-04-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1271807A CN1271807A (en) | 2000-11-01 |
| CN1120292C true CN1120292C (en) | 2003-09-03 |
Family
ID=14808286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00106963 Expired - Fee Related CN1120292C (en) | 1999-04-28 | 2000-04-26 | Secondary air supply device of exhaust system of motorbike |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4344423B2 (en) |
| CN (1) | CN1120292C (en) |
| TW (1) | TW559228U (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE602004013815D1 (en) * | 2004-12-30 | 2008-06-26 | Kwang Yang Motor Co | Exhaust gas recirculation device for motorcycle internal combustion engine |
| JP5395444B2 (en) * | 2009-01-14 | 2014-01-22 | 本田技研工業株式会社 | Motorcycle wind guide structure |
| JP6194267B2 (en) * | 2014-03-19 | 2017-09-06 | 本田技研工業株式会社 | Engine with secondary air supply device |
| CN104454215B (en) * | 2014-10-24 | 2017-05-31 | 重庆市合川区邓健萍摩托车配件加工厂 | A kind of integral type cylinder head of motorcycle that can effectively reduce dusty gas discharge |
| CN212690197U (en) * | 2019-12-10 | 2021-03-12 | 九号智能(常州)科技有限公司 | Cylinder head and engine with same |
-
1999
- 1999-04-28 JP JP12131899A patent/JP4344423B2/en not_active Expired - Fee Related
-
2000
- 2000-03-22 TW TW89219867U patent/TW559228U/en unknown
- 2000-04-26 CN CN 00106963 patent/CN1120292C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| TW559228U (en) | 2003-10-21 |
| JP4344423B2 (en) | 2009-10-14 |
| CN1271807A (en) | 2000-11-01 |
| JP2000310115A (en) | 2000-11-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| 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: 20030903 Termination date: 20130426 |