CN101936200B - Silencer apparatus and autobicycle - Google Patents
Silencer apparatus and autobicycle Download PDFInfo
- Publication number
- CN101936200B CN101936200B CN2010102193903A CN201010219390A CN101936200B CN 101936200 B CN101936200 B CN 101936200B CN 2010102193903 A CN2010102193903 A CN 2010102193903A CN 201010219390 A CN201010219390 A CN 201010219390A CN 101936200 B CN101936200 B CN 101936200B
- Authority
- CN
- China
- Prior art keywords
- mentioned
- central axis
- outlet pipe
- catalysing area
- muffler body
- 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
Links
Images
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
Abstract
Provided is a silencer apparatus capable of improving prewarming performance of a catalyst part, and implementing low centre of gravity and integration of weight so as to improve operation and running stability of the vehicle by designing the catalyst part. Exhaust gas is discharged to an exhaust channel arranged in a silencer main body (18A) from an exhaust pipe (23) in the silencer main body (18A), a part of the exhaust channel is bended into a U shape (U-shaped exhaust pipe (190)), and the catalyst part (187) is arranged on the upstream side of the U-shaped exhaust pipe (190). Furthermore, a downstream side exhaust pipe (191) extending in a straight line is extended to a first expansion chamber (183) from the U-shaped exhaust pipe (190), and the first expansion chamber (183) is provided with the catalyst part (187). Thereby, the catalyst part (187) may be bared in high temperature exhaust gas so as to improve the prewarming performance of the catalyst part (187). In addition, the catalyst part (187) can be arranged at a height identical to that of an inlet of the exhaust pipe (23) or on side front of the silencer main body (18A), so as to implement the low centre of gravity and integration of weight.
Description
Technical field
The motorcycle that the present invention relates to a kind of muffler assembly and have this muffler assembly.
Background technique
For the baffler of scooter, generally catalysing area is configured in the muffler body owing to the close together from the firing chamber to the muffler body.In addition, because the close together from the firing chamber to the muffler body from guaranteeing the purpose of outlet pipe length, generally makes outlet pipe be u turn in muffler body.
Patent documentation 1: Japanese kokai publication hei 6-336917 communique
Patent documentation 2: TOHKEMY 2006-220089 communique
The problem that invention will solve
In this baffler, muffler body is interior usually is several expansion chambers by zoning, disposes the many air pipes that are used for being communicated with each expansion chamber in muffler body.Air ducts is alongst abreast configuration in muffler body, but because catalysing area is larger than the diameter of air pipe, so its configuration degrees of freedom is lower.
Therefore, in the muffler structure that patent documentation 1 is put down in writing, catalysing area is configured in downstream from the outlet pipe of u turn to the position that the exhaust circulation direction is left, thereby reduces the quantity that is present in other air pipe around the catalysing area.
Yet, in the structure that patent documentation 1 is put down in writing, because catalysing area is configured in downstream from outlet pipe to the position that the exhaust circulation direction is left, have the problem of the pre-thermal characteristics step-down of catalysing area.In addition, when being equipped with baffler in the vehicle, owing to be positioned at the top of outlet pipe as the catalysing area of weight thing, so hindered centre of gravity.
On the other hand, in patent documentation 2, put down in writing and do not made outlet pipe u turn in muffler body, and catalysing area is configured in the circulating direction from the downstream of the outlet pipe of straight line shape to exhaust and left the position in downstream side.Adopt in this structure, can improve the pre-thermal characteristics of catalysing area, and, when in vehicle, being equipped with baffler, because catalysing area is positioned at the position with the outlet pipe equal height, therefore, can realize centre of gravity.
Yet in the structure that patent documentation 2 is put down in writing, catalysing area mind-set vehicle outside from muffler body is offset and disposes, and therefore at the catalysing area of the position configuration of leaving from vehicle's center of gravity to vehicle outside as the weight thing, has hindered the centralization of quality.
Summary of the invention
The present invention makes in view of this actual conditions, its purpose is to provide a kind of muffler assembly, the pre-thermal characteristics of the catalysing area that is configured in the baffler is improved, and utilize the Configuration centre of gravity of catalysing area and the centralization of quality, thereby improve operability and the riding stability of vehicle.
Be used for solving the means of problem
Muffler assembly of the present invention is characterized in that, has: muffler body; Exhaust passageway, it is configured in the muffler body, and this exhaust passageway is connected with the downstream of outlet pipe; The U-shaped part, it is formed on the intermediate portion of above-mentioned exhaust passageway; And catalysing area, it is used for the exhaust gas that enters in the above-mentioned exhaust passageway from above-mentioned outlet pipe is purified, above-mentioned catalysing area is configured in the upstream side of above-mentioned U-shaped part, and be configured in the above-mentioned muffler body, described muffler assembly also has: a plurality of expansion chambers, and it is formed by zoning in above-mentioned muffler body; The downstream part, its length direction straight line from above-mentioned U-shaped downstream side partly along above-mentioned muffler body extends, and, the downstream of above-mentioned downstream part is open in being provided with the above-mentioned expansion chamber of above-mentioned catalysing area, the above-mentioned outlet pipe that enters in the above-mentioned muffler body enters from about centre of the anterior end surface of above-mentioned muffler body, the central axis of above-mentioned catalysing area, the central axis of above-mentioned downstream part, and the central axis of above-mentioned outlet pipe is comprised in the same imaginary plane, and the central axis of above-mentioned outlet pipe is configured between the central axis of the central axis of above-mentioned catalysing area and above-mentioned downstream part.
The effect of invention
Adopt the present invention, a kind of muffler assembly can be provided, it improves the pre-thermal characteristics of the catalysing area that is configured in the baffler, and helps the raising of operability and the riding stability of vehicle.
Description of drawings
Fig. 1 is the side view of the scooter of the invention process form.
Fig. 2 is the plan view of the scooter of the invention process form.
Fig. 3 is front view and the rear view of the scooter of the invention process form.
Fig. 4 is the simple side view of the scooter of the invention process form.
Fig. 5 is the view of the muffler assembly seen from arrow A direction shown in Figure 4.
Fig. 6 is the perspective elevation of the state of expression after the part of muffler assembly removal muffler body.
Fig. 7 is the sectional drawing of the muffler assembly seen from arrow B direction shown in Figure 5.
Fig. 8 is the sectional drawing of the muffler assembly seen from arrow C direction shown in Figure 5.
Fig. 9 is the sectional drawing of the muffler assembly seen from the face vertical with the axis of muffler assembly.
Symbol description
1: scooter (vehicle); 2: falling tube; 3: turn to head tube; 4: rear vehicle frame; 5: front fork;
6: deflecting bar; 7: front-wheel; 8: brake disc; 9: engine bracker; 10: stay;
11: swing bodies formula motor; 12: cylinder assembly; 13: crankcase; 13A: oscillation pivot section;
14: variable-speed unit; 15: trailing wheel; 16: attenuator; 17: air cleaner; 18:
Baffler; 18A: muffler body; 18B: discharge tube; 19: jockey's seat; 20: foot treadle;
21: the foreleg protective housing; 22: rear vehicle frame cover; 22A: rear mudguard; 23: outlet pipe;
24: the baffler support bracket; 24A, 24B: through hole; 25: the baffler lid; 181: the first dividing plates;
181A: through hole; 182: second partition; 183: the first expansion chambers; 184: the three expansion chambers;
185: the second expansion chambers; 186: divergent cone; 187: catalysing area; 188: tubular part;
189: converged cone; 190:U font outlet pipe; 191: the downstream side outlet pipe; 192: air pipe;
193: air pipe.
Embodiment
Below, example of the present invention is described.Fig. 1, Fig. 2, Fig. 3 are respectively side view, plan view, front view and the rear views of having used scooter of the present invention (hereinafter referred to as vehicle) 1.At first, utilize Fig. 1, Fig. 2, Fig. 3 that the Sketch of vehicle 1 is described.In addition, comprise these figure interior, among the employed figure, as required, vehicle front represents that with arrow Fr rear view of vehicle represents that with arrow Rr right side, vehicle side represents that with arrow R left side, vehicle side represents with arrow L in the following description.
Vehicle 1 is by utilizing a plurality of vehicle body frames of being made by steel or aluminum alloy to form body framing and various assembling parts being consisted of on vehicle body frame.As the falling tube 2 of a vehicle body frame part, its front end with turn to head tube 3 combinations, extend to below roughly from turning to head tube 3, crooked and extend to rear roughly afterwards.In the rear portion side of falling tube 2, be combined with as vehicle frame 4 after the pairing left and right of a vehicle body frame part, it tilts to the back upper place respectively and extends.
Turn to head tube 3 to support rotationally front fork 5, the upper end of front fork 5 is fixed with deflecting bar 6, and the lower end side of front fork 5 is supported with front-wheel 7 rotationally.In addition, be provided with the brake disc 8 that rotates with its one at front-wheel 7.
Be formed with engine bracker 9 in the rear end of falling tube 2, engine bracker 9 can make the up and down direction swing centered by the supporting portion of stay 10 of swing bodies formula motor 11 by the modular motor 11 of stay 10 swinging in the cross rest.Swing bodies formula motor 11 is with cylinder assembly 12, crankcase 13 and comprise speed changer in 14 blocking of interior variable-speed unit, supports trailing wheel 15, and and rear vehicle frame 4 between shelve attenuator 16, thereby had the function of swing arm.
In more detail, the engine bracker 9 that is used for the modular motor 11 of swinging in the cross rest is formed on the rear end of falling tube 2 and becomes one with falling tube 2, perhaps, is securely fixed in the rear end of falling tube 2 and extends to rear view of vehicle.Engine bracker 9 also is fixed with stay 10, with swing bodies formula motor 11 up and down direction swingingly be supported in this stay 10.Crankcase 13 at swing bodies formula motor 11 has formed the 13A of oscillation pivot section, and this 13A of oscillation pivot section axle is supported on the stay 10.And, in swing bodies formula motor 11, be positioned at the variable-speed unit 14 of rear view of vehicle, can support rotationally trailing wheel 15 in the side of its overall width direction inboard, the surface support attenuator 16 thereon.Adopt this structure, swing bodies formula motor 11 has had the function of swing arm.
Be equipped under the state of vehicle 1 at swing bodies formula motor 11, from vehicle front side, cylinder assembly 12, crankcase 13, variable-speed unit 14 are arranged by this order.The air cooled engine that includes single-cylinder in cylinder assembly 12 carries with the state of cylinder axis along vehicle fore-and-aft direction approximate horizontal.And, from the power of bent axle that crankcase 13 comprises, passing to the contained driving sprocket wheel of variable-speed unit 14 by transfer members such as V-type bands, the transfer members such as above-mentioned V-type band are set up into along vehicle fore-and-aft direction approximate horizontal.Adopt this structure, swing bodies formula motor 11 is the shape of growing crosswise in side view, is equipped on vehicle 1 with its length direction along the state of vehicle fore-and-aft direction approximate horizontal, becomes the inhibition that can realize height of car and the layout structure of centre of gravity.
In swing bodies formula motor 11, the upper surface of variable-speed unit 14 is provided with air cleaner 17, and air cleaner 17 provides air after the purification to the intakeport of cylinder assembly 12.Because cylinder assembly 12 is positioned at vehicle front side in swing bodies formula motor 11, from the air after the purification of air cleaner 17 by supplying with to intakeport towards the air suction way of vehicle front.In addition, the lower surface of cylinder assembly 12 is formed with relief opening, outlet pipe 23(Fig. 4) from here rearward crooked and extension, be connected with baffler 18 at rear view of vehicle.
In addition, above swing bodies formula motor 11, be provided with the jockey's seat 19 that takes a seat for the jockey, above falling tube 2, be supported on not shown foot-operated carriage for the foot treadle 20 of carrying leg under the state that the jockey takes one's seat.In addition, foot treadle 20 and hood-shaped the becoming one of pin carriage that consists of vehicle appearance.And, between swing bodies formula motor 11 and the jockey's seat 19, be formed with the article storing space of the so-called helmet box that opens and closes by jockey's seat 19.
As vehicle appearance, be coated with various body covers, various body covers are supported on the correct position of vehicle body frame etc.Foreleg protective housing 21 is equipped with signaling lamp, and the vehicle front face side is covered, and links into an integrated entity with above-mentioned foot treadle 20.Rear vehicle frame cover 22 is equipped with signaling lamp and brake lamp, and rear view of vehicle is covered.And, be formed with the article storing space in the inboard of rear vehicle frame cover 22.In addition, the rear end of rear vehicle frame cover 22 is provided with rear mudguard 22A, and it is used for covering the top of trailing wheel 15.
The side view of Fig. 4 vehicle 1 of the state behind the vehicle frame cover 22 that is simple expression behind vehicle 1 removal, Fig. 5 are the baffler 18 seen of the arrow A direction from Fig. 4 and the view of outlet pipe 23.
Lower surface at cylinder assembly 12 is formed with not shown relief opening, and as shown in Figure 4, this relief opening is connected with outlet pipe 23.Crooked backward rear view of vehicle extends and tilts a little to the back upper place outlet pipe 23 from relief opening to the overall width direction, afterwards with baffler 18 combinations.The muffler body 18A that consists of baffler 18 outer surfaces is cylindric, and outlet pipe 23 enters (simultaneously with reference to Fig. 6) in the muffler body 18A from about centre of the vehicle front side end face of muffler body 18A.The inner exhaust gas that flows into or flow out from outlet pipe 23 to muffler body 18A by the exhaust passageway that consists of in 18A, is purified by catalyzer, and the expansion chamber that institute's zoning goes out in the muffler body 18A is discharged.To the exhaust gas of expansion chamber discharge, afterwards via a plurality of expansion chambers, from discharge tube 18B(Fig. 5) discharge to the outside, this discharge tube 18B opens to the outside from the rear end of muffler body 18A.
Be welded with baffler support bracket 24 at muffler body 18A and outlet pipe 23, the through hole 24A, the 24B that are formed on the baffler carriage 24 are fixed on the fixing part of the correct position that is formed at crankcase 13, thereby baffler 18 is fixed on the swing bodies formula motor 11.Be equipped at baffler 18 under the state of vehicle 1, baffler 18 is the state that the rear portion makes progress at the vehicle fore-and-aft direction.In addition, at the additional baffler cover bracket 24C that is provided with in the overall width direction outside of muffler body 18A side face (outer surface), by this baffler cover bracket 24C baffler lid 25 is installed, this baffler lid 25 covers the length direction of baffler 18.
Then, the internal structure of baffler 18 described.Fig. 6 (A), (B) are the perspective elevation of expression after the part of baffler 18 removal muffler body 18A.In addition, in Fig. 6 (A), (B), also exist for convenient and not shown parts.And, in the following description, there is the situation that the side near apart from outlet pipe 23 sides in the exhaust passageway in the muffler body 18A described as the downstream as upstream, a side far away.
Shown in Fig. 6 (A), (B), in muffler body 18A, dispose respectively discoid the first dividing plate 181, second partition 182, thus, it is the first expansion chamber 183, the 3rd expansion chamber 184, the second expansion chamber 185 that muffler body 18A begins by zoning from vehicle front.
End of downstream side (end of rear view of vehicle side) at catalysing area 187 is connected with tubular part 188.Tubular part 188 is pipe parts of inserting logical the first dividing plate 181, the hollow cylindrical between the first expansion chamber 183 and the 3rd expansion chamber 184, consists of the part of exhaust passageway.The tubular part 188 that one end of upstream side is connected with catalysing area, its other end is connected with the converged cone 189 of undergauge rearward.Adopt this structure, the exhaust gas of discharging from divergent cone 186 flows out to the rear of vehicle by tubular part 188 and converged cone 189 after catalysing area 187 purifies.
Affect the output characteristics of motor and the converged cone 189 of noise reduction characteristic, undergauge became before zoning goes out the second partition 182 of the second expansion chamber 185 to form mild taper, and extended near the second partition 182.And converged cone 189, its end of downstream side form roughly straight tubular and are supported in second partition 182.In the second expansion chamber 185, dispose the U font outlet pipe 190 for U word shape of being bent to form shown in Fig. 6 (B), the upstream side end of U font outlet pipe 190 is connected with the end of downstream side of converged cone 189.Downstream side outlet pipe 191, one end of its upstream side is connected with U font outlet pipe 190, extend to the first expansion chamber 183 by second partition 182, the first dividing plate 181, the other end in the downstream side of downstream side outlet pipe 191 is close to catalysing area 187, side by side exhaust gas.Adopt this structure, the exhaust gas that flows out to rear view of vehicle, by U font outlet pipe 190 conversion directions, forwards diffluence and in the 183 interior discharges of the first expansion chamber.
Next exhaust gas to the first expansion chamber 183 is discharged flows into the second expansion chamber 185.Shown in Fig. 6 (B), the first expansion chamber 183 is communicated with by being configured to the air pipe 192 parallel with the axis of outlet pipe 23 grades with the second expansion chamber 185.Thus, the exhaust gas from downstream side outlet pipe 191 is discharged to the first expansion chamber 183 flows into the second expansion chamber 185 that is positioned at vehicle rear.
And shown in Fig. 6 (B), the second expansion chamber 185 is communicated with by air pipe 193 with the 3rd expansion chamber 184.The exhaust gas of discharging to the second expansion chamber 185 thus, flows into the 3rd expansion chamber 184.Shown in Fig. 6 (A), the end of the discharge tube 18B that is communicated with the outside is in the 184 interior openings of the 3rd expansion chamber, and the exhaust gas that flows into the 3rd expansion chamber 184 is discharged to the outside by discharge tube 18B.
Next, shape and coupled condition from the end of downstream side of outlet pipe 23 to each parts of downstream side outlet pipe 191 are elaborated, and these parts consist of the exhaust passageway in the muffler body 18A before will discharging to the first expansion chamber 183 from the exhaust gas that enters into the outlet pipe 23 in the muffler body 18A.Fig. 7 is the B-B sectional drawing of seeing from arrow B shown in Figure 5, and Fig. 8 is the C-C sectional drawing of seeing from arrow C shown in Figure 5.In addition, Fig. 9 is the sectional drawing of the baffler 18 seen from the axial direction of baffler 18.
As shown in Figure 7, outlet pipe 23 directly enters from about centre of the above-below direction of muffler body 18A.Fig. 9 (A) is the view of the D-D direction among Fig. 7, and as shown in this figure, outlet pipe 23 enters in the muffler body 18A from the centre of the overall width direction of baffler 18.Afterwards, outlet pipe 23 extends in the first expansion chamber 183 and is connected with above-mentioned divergent cone 186.
Fig. 8 is C-C sectional drawing shown in Figure 5, in more detail, be the sectional drawing (simultaneously with reference to Fig. 9 (B)) that the imaginary plane of central axis of central axis, the downstream side outlet pipe 191 of the involved central axis that outlet pipe 23 arranged of baffler 18, catalysing area 187 is cut open.Although in baffler 18, the central axis (L3) that has formed central axis (L2), the downstream side outlet pipe 191 of central axis (L1), the catalysing area 187 of outlet pipe 23 is comprised in the position relationship in the same imaginary plane, but does not need to adopt such structure.
As shown in Figure 8, divergent cone 186 is the cone shape of the decaptitating (residual fraction after the removal conical head of rearward hole enlargement, be circular cone), the center of its side face towards vehicle interior side below (the arrow D direction among Fig. 9 (A)) gradually away from the central axis of outlet pipe 23.And, divergent cone 186, the state of the upstream-side-end of embedding catalysing area 187 and catalysing area 187 link beyond its end of downstream side, and afterwards, catalysing area 187 extends to the position, front of the first dividing plate 181.With the end of downstream side of the catalysing area 187 of the position, front that extends to the first dividing plate 181 by the form of the outer embedding of interior all end faces of tubular part 188 with catalysing area 187 and tubular part 188 chimeric bindings, this tubular part 188 is adapted to across between the first expansion chamber 183 and the 3rd expansion chamber 184.Tubular part 188 is inserted and is led in the inserting hole 181A of the first dividing plate 181, is the airtight conditions that keeps between the expansion chamber, tubular part 188 with the state of close contact, be its side face and the contacting in interior week of inserting hole 181A.Like this, catalysing area 187 with its upstream-side-end be connected with outlet pipe 23, its end of downstream side is supported with the state that tubular part 188 is connected, its side face is exposed in the first expansion chamber 183.Adopt such structure, owing to the heat of the high-temperature exhaust air gas of discharging to the first expansion chamber 183 is directly passed to the outer surface of catalysing area 187, so the preheating of catalysing area 187 can be done sth. in advance.In addition, in this example, although with outlet pipe 23 and divergent cone 186 split settings, also they can be formed as one.And, although catalysing area 187 is supported by its end, front and back is connected with divergent cone 186, tubular part 188, and its side face exposed in the first expansion chamber 183, but most of outer surface that also can covering catalyst section 187 and catalysing area 187 is supported in the muffler body 18A.
Fig. 9 (B) is the view of the E-E direction among Fig. 7, is the sectional drawing of cutting baffler 18 in the after a while side of the first dividing plate 181 open in more detail.Because catalysing area 187 is connected with divergent cone 186, and the center heart of the side face of diffusion centrum 186 towards vehicle interior side below gradually away from the central axis of outlet pipe 23, therefore, shown in Fig. 9 (B), the central axis of catalysing area 187 (L2) is in the position of the skew from the central axis (L1) of outlet pipe 23 to outer circumferential side (the arrow D direction Fig. 9 (A)).Therefore, be equipped with under the state of baffler 18 the axis L 2(axle center of catalysing area 187 at vehicle 1) at vertical surface and the vehicle interior side between the horizontal plane and the downside of vehicle 1, namely axis L 1 is positioned at vehicle interior side and downside relatively.
Then, in the 3rd expansion chamber 184, tubular part 188 forms in the dead astern of catalysing area 187 along the roughly the same exhaust passageway of specific length size internal diameter and catalysing area 187, and the end of downstream side of tubular part 188 (dead astern) is connected with converged cone 189.Converged cone 189 undergauge gradually in the 3rd expansion chamber 184, and be connected towards the U of the 3rd expansion chamber font outlet pipe 190 with an end through second partition 182.
U font outlet pipe 190 bends to U word shape, and in its end of downstream side and 191 combinations of downstream side outlet pipe.Downstream side outlet pipe 191 extends to the first expansion chamber 183, and discharges exhaust gas from its end of downstream side.Here, shown in Fig. 9 (B), because the central axis (L3) of the central axis (L2) of the central axis (L1) of formation outlet pipe 23, catalysing area 187, downstream side outlet pipe 191 is comprised in the position relationship in the same imaginary plane in baffler 18, and the central axis of catalysing area 187 (L2) moves to the periphery lateral deviation from the central axis (L1) of outlet pipe 23, so the central axis of downstream side outlet pipe 191 (L3) is positioned at the opposition side of the central axis (L2) of catalysing area 187 across the central axis (L1) of outlet pipe 23.That is, be set as from the central axis (L3) of downstream side outlet pipe 191 larger to the distance of the axis of outlet pipe 23 than the central axis (L3) from downstream side outlet pipe 191 to the distance of the central axis (L2) of catalysing area 187.Structure described herein, the back is described in detail, and when carrying on vehicle 1, helps centre of gravity and mass concentration.
And behind the first expansion chamber 183 discharge exhaust gas, as mentioned above, exhaust gas flows into the second expansion chamber 185, the 3rd expansion chamber 184, and finally discharges to the outside from discharge tube 18B from downstream side outlet pipe 191.Fig. 9 (C) is the view of the F-F direction among Fig. 7, more specifically, is the sectional drawing of cutting baffler 18 in the after a while side of second partition 182 open.As shown in this figure, air pipe 192, the air pipe 193 that is communicated with each expansion chamber is not adapted to not produce with catalysing area 187 and downstream side outlet pipe 191 etc. in muffler body 18A interferes.In addition, discharge tube 18B is adapted to its discharge side end and opens to the outside from the centre of the overall width direction of baffler 18, and exhaust gas is from discharging to the outside here.
As mentioned above, in this example, in the muffler body 18A of baffler 18 on the exhaust passageway of formed exhaust gas, be provided with the position (U font outlet pipe 190) that bends to U word shape, and catalysing area 187 be configured in the upstream side of the exhaust gas flow direction of U font outlet pipe 190.Can improve the pre-thermal characteristics of catalysing area 187 by this structure.Also namely, by catalysing area 187 being configured in the upstream side of U font outlet pipe 190, catalysing area 187 is exposed in the exhaust gas of high temperature as much as possible, thereby has improved the pre-thermal characteristics of catalysing area 187.And, the downstream side outlet pipe 191 that extends from the downstream side straight line shape of U font outlet pipe 190, extend to the first expansion chamber 183 always and exhaust gas is discharged, by at the first expansion chamber 183 interior configuration catalysing areas 187, make the exhaust gas of high temperature directly with 187 encirclements of catalysing area, thereby make catalysing area 187 can further do sth. in advance preheating.
In addition, by catalysing area 187 being configured in the upstream side of U font outlet pipe 190, catalysing area 187 can be configured in (if downstream side configuration catalysing area on the height identical with the entrance part of outlet pipe 23, then be in the position higher than outlet pipe 23), can realize the centre of gravity of vehicle 1, therefore can improve the riding stability of vehicle 1.In addition, in vehicle 1, vehicle's center of gravity is positioned at swing bodies h type engine h 11 sides as the weight thing, but because inclined to one side the place ahead of muffler body 18A disposes the catalysing area 187 as the weight thing, therefore can make as weight thing catalysing area 187 near the vehicle's center of gravity side.Therefore, the centralization of quality can be realized, and the operability of vehicle 1 can be improved.
In addition, shown in Fig. 9 (B), in baffler 18, the central axis (L3) of the central axis (L1) of the outlet pipe 23 that formation enters from about centre of muffler body 18A, the central axis (L2) of catalysing area 187, downstream side outlet pipe 191 is comprised in the position relationship in the same imaginary plane, and the central axis of catalysing area 187 (L2) is in across the relative position of the central axis (L1) of outlet pipe 23 with the central axis (L3) of downstream side outlet pipe 191.By forming this position relationship, with on baffler 18 equipped vehicles 1 time, the catalysing area 187 as the weight thing can be configured in as far as possible overall width direction inboard and below (low level).And, when like this this catalysing area 187 being configured in overall width direction inboard and below (low level), can realize centralization and the centre of gravity of quality, the operability of vehicle 1 and riding stability are further improved.In addition, to the jockey, the inboard of muffler body 18A and below are in leaves foot position farthest, can effectively make the catalysing area 187 of high temperature away from foot.In addition, in this example, on the outer surface of the relative muffler body 18A of downstream side outlet pipe 191 and catalysing area 187, be provided with baffler lid 25, therefore, can guarantee effectively the Security for high temperature catalyst section 187.
In addition, in baffler 18, be set as from the central axis of downstream side outlet pipe 191 larger to the distance of the axis of outlet pipe 23 than the central axis from downstream side outlet pipe 191 to the distance of the central axis of catalysing area 187.In this structure, even will in muffler body 18A, consist of each parts of exhaust passageway near the central axis configuration of muffler body 18A, also can will be positioned at the outlet pipe 23 of upstream side of catalysing area 187 near the configuration of the central axis of muffler body 18A, therefore, can obtain it seems from the outside the visually good device of design.And, even not having the central axis of central axis, the downstream side outlet pipe 191 of axis, the catalysing area 187 of outlet pipe 23, this structure is not comprised in position relationship in the same imaginary plane, also can obtain identical effect.
In addition, divergent cone 186 is the cone shape of decaptitating of rearward hole enlargement, and its axle center gradually away from the axis of outlet pipe 23, and connects outlet pipe 23 and catalysing area 187 towards vehicle interior side below.By using this divergent cone 186, the exhaust gas of discharging from outlet pipe 23 can spread effectively, can effectively utilize catalysing area 187.
More than example of the present invention is illustrated, yet the present invention is not limited in above-mentioned example.For example, in this example, baffler of the present invention is applied to scooter, but also can be applied at other motorcycle.
Claims (5)
1. muffler assembly is characterized in that having:
Muffler body;
Exhaust passageway, it is configured in the muffler body, and this exhaust passageway is connected with the downstream of outlet pipe;
The U-shaped part, it is formed on the intermediate portion of above-mentioned exhaust passageway; And
Catalysing area, it is used for the exhaust gas that enters in the above-mentioned exhaust passageway from above-mentioned outlet pipe is purified,
Above-mentioned catalysing area is configured in the upstream side of above-mentioned U-shaped part, and is configured in the above-mentioned muffler body,
Described muffler assembly also has:
A plurality of expansion chambers, it is formed by zoning in above-mentioned muffler body;
The downstream part, its length direction straight line from above-mentioned U-shaped downstream side partly along above-mentioned muffler body extends, and,
The downstream of above-mentioned downstream part is open in being provided with the above-mentioned expansion chamber of above-mentioned catalysing area,
The above-mentioned outlet pipe that enters in the above-mentioned muffler body enters from about centre of the anterior end surface of above-mentioned muffler body,
The central axis of the central axis of above-mentioned catalysing area, the central axis of above-mentioned downstream part and above-mentioned outlet pipe is comprised in the same imaginary plane, and the central axis of above-mentioned outlet pipe is configured between the central axis of the central axis of above-mentioned catalysing area and above-mentioned downstream part.
2. muffler assembly as claimed in claim 1 is characterized in that,
The central axis of above-mentioned catalysing area is configured to be positioned at respect to the central axis of above-mentioned outlet pipe the inboard of overall width direction, and the central axis of above-mentioned catalysing area is configured to be positioned at respect to the central axis of above-mentioned outlet pipe the downside of overall height direction.
3. muffler assembly as claimed in claim 1 is characterized in that, also has:
The central axis that the divergent cone that is the cone shape of decaptitating, its central shaft alignment above-mentioned catalysing area is gradually away from the central axis of above-mentioned outlet pipe, and this divergent cone connects above-mentioned outlet pipe and above-mentioned catalysing area.
4. muffler assembly as claimed in claim 1 is characterized in that, also has:
The baffler lid, with respect to the vertical plane of the central axis that comprises above-mentioned outlet pipe, this baffler covers on the outer surface of the above-mentioned muffler body that is located at central axis one side that disposes above-mentioned downstream part.
5. muffler assembly as claimed in claim 1 is characterized in that,
Distance between the central axis of the central axis of above-mentioned outlet pipe and above-mentioned catalysing area is set as less than the distance between the central axis of the central axis of above-mentioned outlet pipe and above-mentioned downstream part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009152639A JP2011007137A (en) | 2009-06-26 | 2009-06-26 | Muffler and motorcycle |
| JP2009-152639 | 2009-06-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101936200A CN101936200A (en) | 2011-01-05 |
| CN101936200B true CN101936200B (en) | 2013-04-10 |
Family
ID=43389742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102193903A Expired - Fee Related CN101936200B (en) | 2009-06-26 | 2010-06-25 | Silencer apparatus and autobicycle |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2011007137A (en) |
| CN (1) | CN101936200B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5916119B2 (en) * | 2012-06-20 | 2016-05-11 | 本田技研工業株式会社 | Exhaust gas purification device for internal combustion engine of saddle riding type vehicle |
| CN103603795B (en) * | 2012-09-05 | 2016-01-27 | 厦门嘉达环保建造工程有限公司 | Descaling muffler |
| JP6256255B2 (en) * | 2014-08-22 | 2018-01-10 | スズキ株式会社 | Muffler structure of motorcycle |
| JP6420698B2 (en) * | 2015-03-11 | 2018-11-07 | 本田技研工業株式会社 | Exhaust muffler device for saddle riding type vehicles |
| JP6530666B2 (en) * | 2015-07-28 | 2019-06-12 | 川崎重工業株式会社 | Exhaust system of motorcycle |
| CN107091132B (en) * | 2016-02-18 | 2019-07-02 | 本田技研工业株式会社 | The exhaust apparatus of saddle-ride type vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6651773B1 (en) * | 2002-09-24 | 2003-11-25 | Gregory M. Marocco | Exhaust sound attenuation and control system |
| CN1796733A (en) * | 2004-12-28 | 2006-07-05 | 本田技研工业株式会社 | Exhaust apparatus of vehicles |
| CN101067393A (en) * | 2006-05-01 | 2007-11-07 | 雅马哈发动机株式会社 | Exhaust device and vehicle provided with an exhaust device |
| CN101082296A (en) * | 2006-05-31 | 2007-12-05 | 本田技研工业株式会社 | Catalyst configuration structure of locomotive two-wheeled vehicle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4383303B2 (en) * | 2004-09-30 | 2009-12-16 | 本田技研工業株式会社 | Exhaust gas purification device |
| CN100443701C (en) * | 2005-03-18 | 2008-12-17 | 雅马哈发动机株式会社 | Exhaust gas purification device |
| JP2006291929A (en) * | 2005-04-14 | 2006-10-26 | Yamaha Motor Co Ltd | Engine with exhaust emission control function |
-
2009
- 2009-06-26 JP JP2009152639A patent/JP2011007137A/en active Pending
-
2010
- 2010-06-25 CN CN2010102193903A patent/CN101936200B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6651773B1 (en) * | 2002-09-24 | 2003-11-25 | Gregory M. Marocco | Exhaust sound attenuation and control system |
| CN1796733A (en) * | 2004-12-28 | 2006-07-05 | 本田技研工业株式会社 | Exhaust apparatus of vehicles |
| CN101067393A (en) * | 2006-05-01 | 2007-11-07 | 雅马哈发动机株式会社 | Exhaust device and vehicle provided with an exhaust device |
| CN101082296A (en) * | 2006-05-31 | 2007-12-05 | 本田技研工业株式会社 | Catalyst configuration structure of locomotive two-wheeled vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011007137A (en) | 2011-01-13 |
| CN101936200A (en) | 2011-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8042649B2 (en) | Vehicular muffler and motorcycle incorporating same | |
| CN101936200B (en) | Silencer apparatus and autobicycle | |
| CN100387809C (en) | Muffler device | |
| US7699134B2 (en) | Motorcycle exhaust system | |
| JP2008095548A (en) | Exhaust device for engine and motorcycle equipped with the exhaust device | |
| US9803522B2 (en) | Exhaust structure of straddle-type vehicle, and vehicle incorporating same | |
| US20200263578A1 (en) | Exhaust muffler structure | |
| CN100400812C (en) | Exhaust gas purification device | |
| EP2050937B1 (en) | Exhaust gas purifying device for engine | |
| US9303541B2 (en) | Exhaust system for motorcycle | |
| KR100864769B1 (en) | Structure for arrangement of catalyst for motorcycle | |
| CN101900014B (en) | Silencer apparatus and autobicycle | |
| TWI299379B (en) | ||
| JP6220869B2 (en) | Motorcycle exhaust system | |
| JP2007321595A (en) | Motorcycle | |
| CN112567115B (en) | Exhaust system | |
| CN100443701C (en) | Exhaust gas purification device | |
| JP4030172B2 (en) | Exhaust system with catalyst in internal combustion engine | |
| CN112922710B (en) | Exhaust system | |
| JP2000282855A (en) | Exhaust emission control device for saddle type vehicle | |
| JP5863612B2 (en) | Silencers and saddle riding vehicles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20210625 |