CN103835786A - Muffler and saddle type vehicle - Google Patents

Muffler and saddle type vehicle Download PDF

Info

Publication number
CN103835786A
CN103835786A CN201310613294.0A CN201310613294A CN103835786A CN 103835786 A CN103835786 A CN 103835786A CN 201310613294 A CN201310613294 A CN 201310613294A CN 103835786 A CN103835786 A CN 103835786A
Authority
CN
China
Prior art keywords
expansion chamber
dividing plate
partition
silencing apparatus
connecting tube
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.)
Granted
Application number
CN201310613294.0A
Other languages
Chinese (zh)
Other versions
CN103835786B (en
Inventor
藤中崇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Publication of CN103835786A publication Critical patent/CN103835786A/en
Application granted granted Critical
Publication of CN103835786B publication Critical patent/CN103835786B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/083—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using transversal baffles defining a tortuous path for the gases or successively throttling gas flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/04—Catalytic converters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/10—Exhaust treating devices having provisions not otherwise provided for for avoiding stress caused by expansions or contractions due to temperature variations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/04—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for motorcycles

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Silencers (AREA)

Abstract

There is provided a muffler which is capable of sufficiently reducing influence from heat generated in a catalyst. There is also provided a saddle type vehicle including the muffler. A saddle type vehicle 10 includes an engine 14 and a muffler 44. The muffler 44 includes an exhaust pipe 46, a silencer 48 and a catalyst 52. The silencer 48 includes a main body portion 68, a first separator 70 and a second separator 72. Inside the main body portion, a first expansion chamber X1 is on a rearward side of the second separator, a second expansion chamber X2 is on a forward side of the first separator, and a third expansion chamber X3 is between the first separator and the second separator. The catalyst is held by the exhaust pipe inside the second expansion chamber. The exhaust pipe passes through a through-hole 70a without making contact with the first separator, and is supported by the second separator. Exhaust gas from the engine flows through the exhaust pipe, the first expansion chamber, the second expansion chamber and the third expansion chamber in this order, and then is released from the main body portion.

Description

Silencing apparatus and Straddle riding type vehicle
Technical field
The present invention relates to silencing apparatus and Straddle riding type vehicle, more specificity relate to the silencing apparatus with catalyzer and the Straddle riding type vehicle that comprises silencing apparatus.
Background technique
At present, known have a silencing apparatus with the catalyzer that the exhaust of motor is purified.
For example, in the muffler configuration that TOHKEMY 2007-23866 communique is recorded, in muffler body, separate into the first expansion chamber, the second expansion chamber and the 3rd expansion chamber by the first dividing plate and second partition.Second partition is supported in muffler body movably along the axle direction of muffler body.The first expansion chamber is set to be clamped by the second expansion chamber and the 3rd expansion chamber.
Motor and the first expansion chamber are communicated with via outlet pipe.The first expansion chamber and the second expansion chamber were communicated with via the connecting tube that is supported in the first dividing plate.The second expansion chamber and the 3rd expansion chamber are communicated with via the primary catalyst that is supported in the first dividing plate and second partition.The 3rd expansion chamber is communicated with outside via tail pipe.
In structure as described above, the exhaust of motor flows in after the first expansion chamber via outlet pipe, via flowing into the second expansion chamber connecting tube.The exhaust flowing into the second expansion chamber flows into the 3rd expansion chamber via primary catalyst, then, is discharged to outside via tail pipe.
In TOHKEMY 2007-23866 communique, record a kind of technology, move by second partition, can absorb the stretching, extension of the each component parts being caused by thermal expansion.But in the muffler configuration of TOHKEMY 2007-23865 communique, primary catalyst is directly supported by the first dividing plate and second partition, therefore, can not fully reduce the impact that heat that primary catalyst produces causes the first dividing plate and second partition.
Summary of the invention
Therefore, main purpose of the present invention is, a kind of Straddle riding type vehicle that can fully reduce the silencing apparatus of the heat affecting being produced by catalyzer and comprise this silencing apparatus is provided.
According to certain aspect of the present invention, the silencing apparatus that provides a kind of Straddle riding type vehicle to use, it has the catalyzer that engine exhaust is purified, and comprising: at the main part of the upwardly extending barrel shape in the front and back of this silencing apparatus, the first dividing plate and second partition, it is arranged in main part, will in main part, be divided into the first expansion chamber, the second expansion chamber and the 3rd expansion chamber, outlet pipe, it extends in main part from front to back in the mode that connects the first dividing plate and second partition, the first dividing plate is arranged on than second partition more on the front, be provided with the first expansion chamber at the rear of second partition, in main part, the space in second partition front is become the second expansion chamber and the 3rd expansion chamber by the first separator lined, ratio first dividing plate of catalyzer in main part position is more on the front arranged in outlet pipe, the first dividing plate has the through hole that is deflated pipe perforation, outlet pipe in the mode that do not contact with the first dividing plate by through hole and be supported in second partition, outlet pipe is flow through in exhaust successively, the first expansion chamber, after the second expansion chamber and the 3rd expansion chamber, be discharged to main part outside.
In the present invention, catalyzer is arranged on than the first dividing plate more on the front., can catalyzer be set in the position of close as far as possible motor.In this case, high-temperature exhaust air can be supplied in catalyzer, therefore, can promote efficiently the activate of catalyzer.In addition, the exhaust of having passed through catalyzer the is led outlet pipe of the first expansion chamber connects the through hole of the first dividing plate in the mode not contacting with the first dividing plate.Thus, though at outlet pipe due to expanding by the high-temperature exhaust air after catalyzer, also can prevent that the impact of this thermal expansion from feeding through to the first dividing plate.In addition, outlet pipe is supported by second partition.At this, second partition is arranged on than the first dividing plate more by rear.In other words, on the circulating direction of the exhaust in outlet pipe, second partition is arranged on than more downstream of the first dividing plate.Therefore, flow through in the exhaust in outlet pipe, near near the delivery temperature second partition delivery temperature than the first dividing plate is low.Therefore,, in outlet pipe, the thermal expansion of the part being supported by second partition is less than near the thermal expansion of the part the first dividing plate.Therefore,, even if utilize second partition supporting outlet pipe, second partition also can not be subject to the impact of the thermal expansion of outlet pipe significantly.These results, can fully reduce the heat impact that silencing apparatus (more specifically, the first dividing plate and second partition) is caused that catalyzer produces.In addition, in this silencing apparatus, exhaust is flowed from the second expansion chamber to the 3rd expansion chamber via the through hole of the first dividing plate.More specifically, in through hole, exhaust is flowed in the space in outlet pipe outside.Now, utilize the exhaust cooled exhaust pipe outer circumferential face that flows through outlet pipe outside, therefore, can reduce the delivery temperature in outlet pipe.Thus, in outlet pipe in mobile exhaust, can reduce efficiently near delivery temperature second partition.
Preferred: outlet pipe comprises the holding part that keeps catalyzer and the fixing part that is fixed on second partition, and holding part is being connected with fixing part in the mode of front and back upward sliding with respect to fixing part.In this formation, the heat producing due to catalyzer in holding part expands, holding part can be with respect to fixing part at front and back upward sliding.Thus, can suppress fixing part moves up in front and back due to the impact of the thermal expansion of holding part.Its result, the impact that can suppress the thermal expansion of holding part feeds through to second partition.
In addition, preferred: holding part and fixing part connect between the first dividing plate and second partition.In this formation, holding part is connected at the rear of the first dividing plate with fixing part.In this case, can shorten the length of fixing part, therefore, it is easy that the assembling of silencing apparatus becomes.
Further preferably: holding part is connected in the front of the first dividing plate with fixing part.In this formation, protect and treat that portion is connected in the position of fully leaving second partition with fixing part.In this case, the length of fixing part is elongated, therefore, utilizes fixing part also can alleviate the impact of the thermal expansion of holding part.For example, in holding part in the direction of footpath when thermal expansion, even if the front end of fixing part (with the joint of holding part) is expanded in the direction of footpath due to holding part, in the case of the length of fixing part is grown, also can suppress the rear portion side (second partition side) of fixing part and expand in the direction of footpath.The impact that thus, can fully suppress the thermal expansion of holding part feeds through to second partition.
Preferred: also comprise the first connecting tube that is communicated with the second expansion chamber and the 3rd expansion chamber, the first connecting tube through hole by the first dividing plate and be supported in the first dividing plate, outlet pipe passes through in the first connecting tube in the mode contact with the first connecting tube.In this formation, can flow through exhaust from the second expansion chamber to the 3rd expansion chamber via the first connecting tube.Thus, can make the pressure of exhaust change reliably, therefore, the erasure effect of silencing apparatus improves.In addition, because outlet pipe does not contact with the first connecting tube, therefore, can prevent that the impact of the thermal expansion of outlet pipe from feeding through to the first dividing plate via the first connecting tube.
In addition, preferably: also comprise the first connecting tube that is communicated with the second expansion chamber and the 3rd expansion chamber, the first connecting tube was supported in the first dividing plate in the position of leaving described through hole.In this formation, on the basis of the through hole (through hole that outlet pipe passes through) of the first dividing plate, can also flow through exhaust from the second expansion chamber to the 3rd expansion chamber via the first connecting tube.That is, in the first dividing plate, two positions of channel setting by exhaust from the second expansion chamber to the 3rd expansion chamber.In this case, can utilize cooling first dividing plate of exhaust of the path that flows through these two positions.The heat affecting that thus, can fully be suppressed at the exhaust of flowing through in outlet pipe feeds through to the first dividing plate.
Further preferably: also comprise: the second connecting tube that is communicated with the first expansion chamber and the second expansion chamber; With the third connecting pipe that is communicated with the 3rd expansion chamber and main part outside, the second expansion chamber is arranged at the front of the first dividing plate, the 3rd expansion chamber is arranged at the rear of the first dividing plate, connect the first dividing plate and second partition the second connecting tube and be supported in the first dividing plate and second partition, third connecting pipe connects second partition and is supported in second partition.In this formation, second expansion chamber in first expansion chamber at second partition rear and the first dividing plate front utilized for the second connecting tube be communicated with.In other words, the second connecting tube was communicated with the first expansion chamber and the second expansion chamber by the 3rd expansion chamber.At this, the delivery temperature of the 3rd expansion chamber is lower than the delivery temperature by the second connecting tube.Thus, can utilize the exhaust in cooling second connecting tube of exhaust of the 3rd expansion chamber.In addition, can flow through exhaust from the first expansion chamber to the second expansion chamber via the second connecting tube, therefore, can make the pressure of exhaust change reliably.Thus, the erasure effect of silencing apparatus improves.
Preferred: also to comprise: the second connecting tube that is communicated with the first expansion chamber and the second expansion chamber; With the third connecting pipe that is communicated with the 3rd expansion chamber and main part outside, the second expansion chamber is arranged at the rear of the first dividing plate, the 3rd expansion chamber is arranged at the front of the first dividing plate, the second connecting tube connected second partition and was supported in second partition, and third connecting pipe connects the first dividing plate and second partition and is supported in the first dividing plate and second partition.In this formation, be provided with the 3rd expansion chamber and catalyzer in the front of the first dividing plate, be provided with the second expansion chamber at the rear of the first dividing plate., catalyzer is arranged on the circulating direction of exhaust and is arranged in than more the 3rd expansion chamber of downstream of the second expansion chamber.In this case, even if the delivery temperature of the 3rd expansion chamber is because the heat that catalyzer produces rises, also can prevent that the exhaust of this temperature rise from flowing in the second expansion chamber.Thus, can suppress the temperature rise of the exhaust of the second expansion chamber.Its result, utilizes the exhaust of the second expansion chamber, the cooling exhaust of flowing through in outlet pipe effectively.In addition, can flow through exhaust from the first expansion chamber to the second expansion chamber via the second connecting tube, therefore, can make the pressure of exhaust change reliably.Thus, the erasure effect of silencing apparatus improves.
Also preferred: catalyzer is arranged on than the first connecting tube, the second connecting tube and third connecting pipe more on the front.In this formation, from observe this silencing apparatus with the rectangular direction of fore-and-aft direction in the situation that (for example, from side or above-below direction observe the situation of silencing apparatus), catalyzer can be not overlapping with the first connecting tube, the second connecting tube and third connecting pipe.Thus, even for example in the case of using thick catalyzer (catalyzer that diameter is larger), also can suppress silencing apparatus chap.
In the silencing apparatus that is equipped on Straddle riding type vehicle, sometimes in each component parts, produce distortion etc. due to the hot impact of catalyzer generation.In this case, the erasure effect of silencing apparatus declines, or because the distortion of each component parts etc. produces noise.Therefore,, in the silencing apparatus that is equipped on Straddle riding type vehicle, preferably alleviate as far as possible the heat affecting that catalyzer produces.Therefore, the silencing apparatus of the present invention of heat affecting that catalyzer produces can be fully reduced and Straddle riding type vehicle can be applicable to.
Above-mentioned purpose of the present invention and other object, feature, aspect and advantage will become brighter and clearer by the detailed description of following embodiments of the present invention of carrying out relevant to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the side view that represents Straddle riding type vehicle.
Fig. 2 is the side view that represents the structure of the major component of Straddle riding type vehicle.
Fig. 3 is the cross section diagram figure (figure observing from left side) that represents the structure of the major component of silencing apparatus.
Fig. 4 is the cross section diagram figure (figure observing from top) that represents the structure of the major component of silencing apparatus.
Fig. 5 is the end view drawing that represents silencing apparatus, and Fig. 5 (a) is the A-A line end view drawing of Fig. 3 and Fig. 4, and Fig. 5 (b) is the B-B line end view drawing of Fig. 3 and Fig. 4, and Fig. 5 (c) is the C-C line end view drawing of Fig. 3 and Fig. 4.
Fig. 6 is the cross section diagram figure (figure observing from left side) that represents the structure of the major component of the silencing apparatus of another embodiment of the present invention.
Fig. 7 is the cross section diagram figure (figure observing from top) that represents the structure of the major component of the silencing apparatus of another embodiment of the present invention.
Fig. 8 is the cross section diagram figure (figure observing from left side) that represents the structure of the major component of the silencing apparatus of another embodiment of the invention.
Fig. 9 is the cross section diagram figure (figure observing from left side) that represents the structure of the major component of the silencing apparatus of another mode of execution more of the present invention.
Description of reference numerals
10: Straddle riding type vehicle;
12: framework;
14: motor;
20: exhaust unit;
44,44a, 44b, 44c: silencing apparatus;
46,86: outlet pipe;
46a, 86a: holding part;
46b, 86b: fixing part;
48,48a, 48b: silencing apparatus;
50,78: tail pipe;
52: catalyzer;
68: main part;
70,80,84: the first dividing plates;
70a, 70b, 72a, 72b, 72c, 80a: through hole;
72: second partition;
74,74a: the first connecting tube;
76,82: the second connecting tube;
X1: the first expansion chamber;
X2, Y2, Z2: the second expansion chamber;
X3, Y3, Z3: the 3rd expansion chamber.
Embodiment
Below, with reference to accompanying drawing, the Straddle riding type vehicle 10 of the silencing apparatus 44 that comprises an embodiment of the present invention is described.
Fig. 1 is the side view that represents Straddle riding type vehicle 10, and Fig. 2 is the side view that represents the structure of the major component of Straddle riding type vehicle 10.
See figures.1.and.2, comprise as the Straddle riding type vehicle 10 of automotive bicycle: framework 12, motor 14, air cleaner 16, air admission unit 18 and exhaust unit 20.Framework 12 comprises: head tube 22, main frame portion 24 and seat frame portion 26.
With reference to Fig. 1, steering shaft 28 is rotatably inserted in head tube 22.In the upper end portion of steering shaft 28, handlebar 30 is installed, and in the underpart of steering shaft 28, front fork 32 is installed.Front-wheel 34 is rotatably supported in the underpart of front fork 32.
See figures.1.and.2, main frame portion 24 comprises the 24a of main frame portion and the lower main frame 24b of portion.The upper main frame 24a of portion has roughly L word shape while seeing in side, extending from head tube 22 to the below of retreading, bending downwards.The lower main frame 24b of portion than the upper main frame 24a of portion more on the lower, extends to the below of retreading from head tube 22.Motor 14 is supported in the 24a of main frame portion and the lower main frame 24b of portion between the upper main frame 24a of portion and the lower main frame 24b of portion.
With reference to Fig. 1, swing arm 36 is supported in the underpart of the 24a of main frame portion swingably.Trailing wheel 38 is rotatably supported in the rearward end of swing arm 36.The driving force producing in motor 14 is passed to trailing wheel 38 via not shown transfer mechanism.Thus, trailing wheel 38 is rotated, and Straddle riding type vehicle 10 advances thus.
See figures.1.and.2, a pair of upper seat frame 26a(of portion that seat frame portion 26 comprises left and right configuration only illustrates the upper seat frame 26a of portion in left side) and a pair of lower seat frame 26b(of portion of the left and right configuration lower seat frame 26b of portion on the left of only illustrating).The front end of each upper seat frame 26a of portion is connected with the substantial middle portion of the upper main frame 24a of portion.The a pair of upper seat frame 26a of portion with the mode that is separated from each other on left and right directions from the 24a of main frame portion rearward extend.With reference to Fig. 1, seat 40 is supported on a pair of upper seat frame 26a of portion.
See figures.1.and.2, a pair of lower seat frame 26b of portion on a pair of the 26a of seat frame portion below from the Xiang Xie back upper place, bottom of the 24a of main frame portion extend.The bottom of the 24a of main frame portion and the rear portion of a pair of upper seat frame 26a of portion in a pair of lower seat frame 26b of portion link.Air cleaner 16 is supported in a side's (in this mode of execution, left side) the upper seat frame 26a of portion and a side's (in this mode of execution, left side) the lower seat frame 26b of portion.To link the mode of a pair of lower seat frame 26b of portion and swing arm 36, be provided with in a pair of rear suspension 41(Fig. 1, only the rear suspension 41 in diagram left side).
Be provided with air admission unit 18 in the mode that links motor 14 and air cleaner 16.Air admission unit 18 comprises throttle body 18a, by the air guide motor 14 being cleaned in air cleaner 16.
Being connected with exhaust unit 20 above of motor 14.Exhaust unit 20 comprises connecting pipe 42 and silencing apparatus 44.Connecting pipe 42 links motor 14 and silencing apparatus 44.Silencing apparatus 44 is supported in a pair of lower seat frame 26b of portion.The exhaust of motor 14 is discharged to outside by connecting pipe 42 and silencing apparatus 44.In this embodiment, as motor 14, single-cylinder engine can be used, as connecting pipe 42,1 tubing can be used.In the situation that using multicylinder engine as motor 14, for example, as connecting pipe 42, can use gas exhaust manifold.
Below, silencing apparatus 44 is described in detail.
Fig. 3 and Fig. 4 are the cross section diagram figure that represents the structure of the major component of silencing apparatus 44.In addition, Fig. 3 is the figure from observe silencing apparatus 44 from left side, and Fig. 4 is the figure that observes silencing apparatus 44 from top.In addition, Fig. 5 is the end view drawing that represents silencing apparatus 44, and Fig. 5 (a) is the A-A line end view drawing of Fig. 3 and Fig. 4, and Fig. 5 (b) is the B-B line end view drawing of Fig. 3 and Fig. 4, and Fig. 5 (c) is the C-C line end view drawing of Fig. 3 and Fig. 4.
In addition, in the explanation of silencing apparatus 44, observe from main part 68 described later, the side that exhaust is flowed into is made as front, and the side that exhaust is flowed out is made as rear.In other words, in main part 68, will connect outlet pipe 46(the second tubing 58 described later) a side be made as front side, will connect tail pipe 50(the second tubing 50b described later) a side be made as rear side.Further in other words, by main part 68 from outlet pipe 46(the second tubing 58) and main part 68(protecgulum 68a) joint extend direction be made as rear.In the present embodiment, the direction parallel with the axis of the first connecting tube 74 described later with the axis of the axis of fixing tubing 64 described later, urceolus 68b described later becomes fore-and-aft direction.In the present embodiment, fix tubing 64, urceolus 68b and arranged in parallel to each other the first connecting tube 74.In Fig. 3 and Fig. 4, " F " represents front, and " R " represents rear.Overlooking while watching, the fore-and-aft direction of silencing apparatus 44 is consistent or roughly consistent with the fore-and-aft direction of Straddle riding type vehicle 10.
With reference to Fig. 2～Fig. 4, silencing apparatus 44 comprises outlet pipe 46, silencing apparatus 48, tail pipe 50(with reference to Fig. 3,4) and catalyzer 52.To cover the mode at tail pipe 50 rear portions, be provided with and cover 54(with reference to Fig. 2 in the rearward end of silencing apparatus 48).In this embodiment, tail pipe 50 is equivalent to third connecting pipe.
With reference to Fig. 3 and Fig. 4, outlet pipe 46 comprises holding part 46a and fixing part 46b, in main part 68 described later, extends from front to back.Holding part 46a comprises multiple tubing.In this embodiment, holding part 46a comprises the first tubing 56, the second tubing 58, the 3rd tubing 60 and the 4th tubing 62.The first tubing 56, the second tubing 58, the 3rd tubing 60 and the 4th tubing 62 have respectively drum.
With reference to Fig. 2, the front end of the first tubing 56 is connected with connecting pipe 42.With reference to Fig. 2 and Fig. 4, the first tubing 56, from connecting pipe 42 rearward extends, extends to oblique right back.
With reference to Fig. 3 and Fig. 4, the front end of the second tubing 58 is connected with the rearward end of the first tubing 56.In the present embodiment, the first tubing 56 is embedded in the second tubing 58, for example, and by being welded and fixed the first tubing 56 and the second tubing 58.The diameter that the second tubing 58 is formed as rearward end is larger than the diameter of front end.The front end of catalyzer 52 is embedded in the rearward end of the second tubing 58.As catalyzer 52, can use known various catalyzer, therefore, omit detailed explanation.In the present embodiment, as catalyzer 52, for example, can use the catalyzer of drum and honeycomb shape.
The diameter that the 3rd tubing 60 is formed as front end is larger than the diameter of rearward end.The rearward end of catalyzer 52 is embedded in the front end of the 3rd tubing 60.Thus, utilize the second tubing 58 and the 3rd tubing 60 to keep catalyzer 52., utilize holding part 46a to keep catalyzer 52.More specifically, catalyzer 52 is held in holding part 46a in the anterior mode that is positioned at silencing apparatus 48 (main part 68).In the present embodiment, for example by welding, catalyzer 52 is fixed on to the second tubing 58 and the 3rd tubing 60.With reference to Fig. 4, the second tubing 58, catalyzer 52 and the 3rd tubing 60 extend from front to back and to oblique right.The second tubing 58 and the 3rd tubing 60 are communicated with via catalyzer 52.
With reference to Fig. 3 and Fig. 4, the front end of the 4th tubing 62 is connected with the rearward end of the 3rd tubing 60.In the present embodiment, the 4th tubing 62 is embedded in the 3rd tubing 60, for example, by being welded and fixed the 3rd tubing 60 and the 4th tubing 62.With reference to Fig. 4, the 4th tubing 62 extends from the 3rd tubing 60 to oblique right back, rearward bending.The diameter that the 4th tubing 62 is formed as rearward end is less than the diameter of other parts.
With reference to Fig. 3 and Fig. 4, fixing part 46b comprises fixing tubing 64 and lid 66.Fixing tubing 64 has drum, is connected with the rearward end of the 4th tubing 62.More specifically, the 4th tubing 62 can be connected in the mode of front and back upward sliding with respect to fixing tubing 64 with the 4th tubing 62 with fixing tubing 64.In the present embodiment, the rearward end of the 4th tubing 62 is embedded in the front end of fixing tubing 64 slidably.
Fixing tubing 64 rearward extends and is fixed on second partition 72 described later from the 4th tubing 62.With reference to Fig. 3 and Fig. 5 (b), in the present embodiment, in order the 4th tubing 62 to be easily embedded in to fixing tubing 64, the internal diameter of fixing tubing 64 front ends is larger than the external diameter of the rearward end of the 4th tubing 62.
With reference to Fig. 3 and Fig. 4, fixing tubing 64 has the multiple through hole 64a to arrange along the mode of fore-and-aft direction and Zhou Fangxiang arrangement.Multiple through hole 64a are arranged at the rear of second partition 72 described later.In other words, multiple through hole 64a are arranged in the first expansion chamber X1 described later.
Lid 66 has roughly circular plate shape, and is embedded in the rearward end of fixing tubing 64 to stop up the mode of the open rearward end of fixing tubing 64.Lid 66 is for example by being fixedly welded on the rearward end of fixing tubing 64.
Silencing apparatus 48 comprises main part 68, the first dividing plate 70, second partition 72, the first connecting tube 74 and the second connecting tube 76.Main part 68 has barrel shape and extends on fore-and-aft direction.Specifically, main part 68 has protecgulum 68a, urceolus 68b, inner core 68c, end cap 68d and inner cap 68e.
Protecgulum 68a has roughly truncated cone shape of hollow, and is formed as the expansion gradually along with rearward going.The front end of protecgulum 68a is connected with the front end of the second tubing 58 of outlet pipe 46.In the present embodiment, the front end of the second tubing 58 is embedded in the front end of protecgulum 68a, for example, by being welded and fixed the second tubing 58 and protecgulum 68a.With reference to Fig. 4, protecgulum 68a extends to oblique right back from the front end of the second tubing 58.
With reference to Fig. 3～Fig. 5, urceolus 68b has hollow general cylindrical shape shape and extends on fore-and-aft direction.
With reference to Fig. 2, Fig. 4 and Fig. 5 (b), urceolus 68b has recess 68f in substantial middle portion and the left side of fore-and-aft direction.Recess 68f is in order to avoid being for example arranged at trailing wheel 38(with reference to Fig. 1) rear suspension 41 on right side and arranging.With reference to Fig. 3 and Fig. 4, the front end of urceolus 68b is connected with the rearward end of protecgulum 68a.In the present embodiment, the rearward end of protecgulum 68a is embedded in the front end of urceolus 68b, for example, by being welded and fixed protecgulum 68a and urceolus 68b.
With reference to Fig. 3, Fig. 4 and Fig. 5 (b), (c), inner core 68c have hollow cylinder shape and with the coaxial shape of urceolus 68b arrange.With reference to Fig. 4 and Fig. 5 (b), the front portion of inner core 68c has the word shape of falling C while seeing overleaf in order to avoid recess 68f.In this embodiment, inner core 68c is embedded in urceolus 68b, for example, by being welded and fixed urceolus 68b and inner core 68c.
With reference to Fig. 3 and Fig. 4, end cap 68d has roughly bowl (bowl) shape and is embedded in the rearward end of urceolus 68b to stop up the mode of opening of urceolus 68b rear end.In the present embodiment, for example by welding, end cap 68d is fixed on to urceolus 68b.End cap 68d have for by tail pipe 50(more specifically, the second tubing 50b described later) through hole 68g.In this embodiment, for example by welding by tail pipe 50(the second tubing 50b) be fixed on end cap 68d.Thus, tail pipe 50(the second tubing 50b) be supported in end cap 68d.
With reference to Fig. 3, inner cap 68e has roughly bowl (bowl) shape and is arranged at the inner side of end cap 68d.In the present embodiment, inner cap 68e is embedded in end cap 68d, for example, by being welded and fixed end cap 68d and inner cap 68e.Inner cap 68e has for by tail pipe 50(the second tubing 50b) through hole 68h.
With reference to Fig. 3, Fig. 4 and Fig. 5 (a), the first dividing plate 70 has roughly bowl (bowl) shape and is arranged in urceolus 68b.In the present embodiment, the first dividing plate 70 is embedded in urceolus 68b, for example, by being welded and fixed urceolus 68b and the first dividing plate 70.With reference to Fig. 3 and Fig. 4, at main part 68(more specifically, urceolus 68b) in, second partition 72 is arranged on the position of more leaning on rear than the first dividing plate 70.With reference to Fig. 3, Fig. 4 and Fig. 5 (c), second partition 72 has roughly bowl (bow1) shape and is arranged in inner core 68c.In this embodiment, second partition 72 is embedded in inner core 68c, for example, by being welded and fixed inner core 68c and second partition 72.Therefore, the first dividing plate 70 and second partition 72 can not move (fixing) with respect to main part 68.
With reference to Fig. 3 and Fig. 4, main part 68 is interior is divided into the first expansion chamber X1, the second expansion chamber X2 and the 3rd expansion chamber X3 by the first dividing plate 70 and second partition 72.Specifically, in main part 68, be provided with the first expansion chamber X1 at the rear of second partition 72.In addition, in main part 68, the space in second partition 72 fronts is divided into the second expansion chamber X2 and the 3rd expansion chamber X3 by the first dividing plate 70.In the present embodiment, in main part 68, be provided with the second expansion chamber X2 in the front of the first dividing plate 70, be provided with the 3rd expansion chamber X3 at the rear of the first dividing plate 70.
Ratio first dividing plate 70 position more on the front of catalyzer 52 in main part 68 is arranged in outlet pipe 46.In other words, catalyzer 52 is arranged in outlet pipe 46 in the second expansion chamber X2.
The first dividing plate 70 has through hole 70a, 70b, and second partition 72 has through hole 72a, 72b, 72c.The first connecting tube 74 connected (perforation) through hole 70a to connect the mode of the first dividing plate 70 on fore-and-aft direction.With reference to Fig. 3, Fig. 4 and Fig. 5 (a), the first connecting tube 74 had drum, by the right side in main part 68.With reference to Fig. 3 and Fig. 4, be communicated with the second expansion chamber X2 and the 3rd expansion chamber X3 the first connecting tube 74.In the present embodiment, for example by welding, the first connecting tube 74 was fixed on to the first dividing plate 70.Thus, the first connecting tube 74 was supported in the first dividing plate 70.Be arranged on the position of more leaning on rear than catalyzer 52 the first connecting tube 74.The diameter of through hole 70a is less than the internal diameter of the main part of the setting position of the first dividing plate 70 68.
Outlet pipe 46 connects through hole 70a(more specifically in the mode that connects the first dividing plate 70 and second partition 72 on fore-and-aft direction, the first connecting tube 74) and through hole 72a.More specifically, the 4th tubing 62 is by the first connecting tube 74, and fixing tubing 64 connects through hole 72a.Outlet pipe 46(the 4th tubing 62) pass through through hole 70a in the mode not contacting with the first dividing plate 70.With reference to Fig. 5 (a), in the present embodiment, outlet pipe 46(the 4th tubing 62) arrange with the first coaxial shape of connecting tube 74 ground, and pass through in the first connecting tube 74 in the mode not contacting with the first connecting tube 74, with reference to Fig. 3 and Fig. 4, fixing tubing 64 is for example by being fixedly welded on second partition 72.Thus, outlet pipe 46 is supported in second partition 72.
In the present embodiment, holding part 46a(the 4th tubing 62) and the fixing tubing 64 of fixing part 46b() between the first dividing plate 70 and second partition 72, connect.In other words, holding part 46a is connected in the 3rd expansion chamber X3 with fixing part 46b.
The second connecting tube 76 connected through hole 70b and through hole 72b to connect the mode of the first dividing plate 70 and second partition 72 on fore-and-aft direction.With reference to Fig. 3, Fig. 4 and Fig. 5 (a), the second connecting tube 76 had drum, by the oblique left bottom of the first connecting tube 74.With reference to Fig. 3 and Fig. 4, be communicated with the first expansion chamber X1 and the second expansion chamber X2 the second connecting tube 76.The front portion of the second connecting tube 76 for example the rear portion by being fixedly welded on for the first 70, the second connecting tube 76 of dividing plate for example can be embedded in through hole 72b in the mode of front and back upward sliding with respect to second partition 72.Thus, the second connecting tube 76 was supported in the first dividing plate 70 and second partition 72.Be arranged on the position of more leaning on rear than catalyzer 52 the second connecting tube 76.
With reference to Fig. 3 and Fig. 4, tail pipe 50 comprises the first tubing 50a, the second tubing 50b and auxiliary tubing 50c, and is communicated with the outside of the 3rd expansion chamber X3 and main part 68.
The first tubing 50a, the second tubing 50b and auxiliary tubing 50c have respectively drum.Tail pipe 50 is arranged on the position of more leaning on rear than catalyzer 52.
With reference to Fig. 3, Fig. 4 and Fig. 5 (c), the coaxial shape of the first tubing 50a and auxiliary tubing 50c ground arranges.The first tubing 50a and auxiliary tubing 50c are by the oblique upper left side of fixing tubing 64 and by the oblique upper right of the second connecting tube 76.With reference to Fig. 3 and Fig. 4, the size of the fore-and-aft direction of the first tubing 50a is larger than the size of the fore-and-aft direction of auxiliary tubing 50c.The first tubing 50a is inserted through auxiliary tubing 50c with its front end and rearward end from the auxiliary outstanding mode of tubing 50c.In the present embodiment, in order not form respectively gap between the auxiliary front-end edge of tubing 50c and the outer circumferential face of the first tubing 50a and between the auxiliary end edge of tubing 50c and the outer circumferential face of the first tubing 50a, for example, by welding, the front-end edge of auxiliary tubing 50c and end edge are fixed on to the outer circumferential face of the first tubing 50a.
With reference to Fig. 3, the first tubing 50a has multiple through hole 50d.Multiple through hole 50d are arranged in auxiliary tubing 50c.Multiple through hole 50d are same with the through hole 64a of fixing tubing 64, spread configuration on the fore-and-aft direction of the first tubing 50a and Zhou Fangxiang.In addition, in Fig. 3, for fear of the complexity of accompanying drawing, only figure is shown with a part of through hole 50d in multiple through hole 50d.Also can setting example between the first tubing 50a and auxiliary tubing 50c as sound-absorbing material (not shown), sound-absorbing material also can be set.
With reference to Fig. 3 and Fig. 4, the first tubing 50a and auxiliary tubing 50c connect through hole 72c to connect the mode of second partition 72 on fore-and-aft direction.Auxiliary tubing 50c is for example by being fixedly welded on second partition 72.Thus, tail pipe 50(more specifically, the first tubing 50a and auxiliary tubing 50c) be supported in second partition 72.
In this embodiment, the first tubing 50a, auxiliary tubing 50c, fixing tubing 64, the first connecting tube 74 and arranged in parallel to each other the second connecting tube 76.
The front end of the second tubing 50b is connected with the rearward end of the first tubing 50a.In this embodiment, the first tubing 50a is embedded in the second tubing 50b, for example, by being welded and fixed the first tubing 50a and the second tubing 50b.With reference to Fig. 3, the second tubing 50b is from the first tubing 50a rearward extends, to the bending of the oblique rear lower side.The second tubing 50b connects through hole 68h and through hole 68g to connect from front to back and oliquely downward the mode of inner cap 68e and end cap 68d.In the present embodiment, for example, by welding, the outer circumferential face of the second tubing 50b is connected in to end cap 68d, makes in through hole 68g, between the second tubing 50b and end cap 68d, do not form gap.
See figures.1.and.2, in Straddle riding type vehicle 10, the exhaust of motor 14 flows in the outlet pipe 46 of silencing apparatus 44 via connecting pipe 42.With reference to Fig. 3 and Fig. 4, after the exhaust that flows in outlet pipe 46 is cleaned in catalyzer 52, flow in the first expansion chamber X1 from multiple through hole 64a of fixing tubing 64.The exhaust that flows in the first expansion chamber X1 flows in the second expansion chamber X2 by the second connecting tube 76.Between the outer circumferential face of the exhaust that flows in the second expansion chamber X2 by the 4th tubing 62 and the inner peripheral surface of the first connecting tube 74, flow in the 3rd expansion chamber X3.The exhaust that flows in the 3rd expansion chamber X3 is discharged to the outside of main part 68 by tail pipe 50.
The action effect of Straddle riding type vehicle 10 is described below.
In the silencing apparatus 44 of Straddle riding type vehicle 10, catalyzer 52 is arranged on than the first dividing plate 70 position more on the front., can catalyzer 52 be set in the position of close as far as possible motor 14.In this case, can supply with high-temperature exhaust air to catalyzer 52, therefore, can promote efficiently the activate of catalyzer 52.In addition, the outlet pipe 46 that is directed in the first expansion chamber X1 by the exhaust of catalyzer 52 can be passed through to through hole 70a in the mode not contacting with the first dividing plate 70.Thus, though at outlet pipe 46 due to expanding by high-temperature exhaust air soon after catalyzer 52, also can prevent that the impact of this thermal expansion from feeding through to the first dividing plate 70.In addition, outlet pipe 46 is supported by second partition 72.At this, second partition 72 is arranged on the position of more leaning on rear than the first dividing plate 70.In other words, on the circulating direction of the exhaust in outlet pipe 46, second partition 72 is arranged on than the more position of downstream of the first dividing plate 70.Therefore,, in the exhaust of flowing through in outlet pipe 46, near delivery temperature second partition 72 is lower than near the delivery temperature the first dividing plate 70.Therefore,, in outlet pipe 46, near the thermal expansion of the thermal expansion of the part that supported by second partition 72 (fixing the tubing 64 in this embodiment) part (the 4th tubing 62 in this embodiment) than the first dividing plate is little.Therefore,, even if utilize second partition 72 to support outlet pipe 46, second partition 72 also can not be subject to the impact of the thermal expansion of outlet pipe 46 significantly.These results, can fully reduce heat that catalyzer 52 produces to silencing apparatus 44(more specifically, the first dividing plate 70 and second partition 72) impact that causes.In addition, in this silencing apparatus 44, exhaust is flowed from the second expansion chamber X2 to the 3rd expansion chamber X3 via the through hole 70a of the first dividing plate 70.More specifically, in through hole 70a, exhaust is flowed in the space in outlet pipe 46 outsides.In through hole 70a, the circulating direction parallel (almost parallel) of the direction that exhaust is flow through in the space in outlet pipe 46 outsides and the exhaust in outlet pipe 46.Now, utilize the outer circumferential face of the exhaust cooled exhaust pipe 46 that flows through outlet pipe outside, therefore, can reduce the delivery temperature in outlet pipe 46., the delivery temperature in space that flows through outlet pipe 46 outsides is lower than flowing through delivery temperature in outlet pipe 46, therefore, can utilize the outer circumferential face of the exhaust cooled exhaust pipe 46 in the space of flowing through outlet pipe 46 outsides.Thus, flow through in the exhaust in outlet pipe 46, can reduce efficiently near the delivery temperature of second partition 72.
In silencing apparatus 44, outlet pipe 46 comprises the holding part 46a that keeps catalyzer 52 and the fixing part 46b that is fixed on second partition 72, and holding part 46a is can be connected with fixing part 46b in the mode of front and back upward sliding with respect to fixing part 46b.Holding part 46a and fixing part 46b arrange on fore-and-aft direction.By this structure, the heat producing due to catalyzer 52 at holding part 46a expands, holding part 46a can be at front and back upward sliding with respect to fixing part 46b.Thus, can suppress fixing part 46b moves up in front and back due to the impact of the thermal expansion of holding part 46a.Its result, the impact that can suppress the thermal expansion of holding part 46a feeds through to second partition 72.
In silencing apparatus 44, holding part 46a and fixing part 46b connect between the first dividing plate 70 and second partition 72.In this case, can shorten the length of fixing part 46b, therefore, it is easy that the assembling of silencing apparatus 44 becomes.
In silencing apparatus 44, the through hole 70a of the first connecting tube 74 by the first dividing plate 70 and be supported in the first dividing plate 70, outlet pipe 46 in the mode that do not contact with the first connecting tube 74 by the first connecting tube 74.In this case, can flow through exhaust from the second expansion chamber X2 to the 3rd expansion chamber X3 via the first connecting tube 74.Thus, can make the pressure of exhaust change reliably, therefore, the erasure effect of silencing apparatus 44 improves.In addition, because outlet pipe 46 does not contact with the first connecting tube 74, therefore, can prevent that the impact of the thermal expansion of outlet pipe 46 from feeding through to the first dividing plate 70 via the first connecting tube 74.
In silencing apparatus 44, the second expansion chamber X2 in the first expansion chamber X1 at second partition 72 rears and the first dividing plate 70 fronts utilized for the second connecting tube 76 be communicated with.In other words, the second connecting tube 76 was communicated with the first expansion chamber X1 and the second expansion chamber X2 by the 3rd expansion chamber X3.At this, the delivery temperature of the 3rd expansion chamber X3 is lower than the delivery temperature by the second connecting tube 76.Thus, utilize the exhaust that the exhaust of the 3rd expansion chamber X3 can be in cooling the second connecting tube 76.In addition, can flow through exhaust from the first expansion chamber X1 to the second expansion chamber X2 via the second connecting tube 76, therefore, can change reliably the pressure of exhaust.Thus, the erasure effect of silencing apparatus 44 improves.
In silencing apparatus 44, catalyzer 52 is arranged on than the first connecting tube 74, the second connecting tube 76 and tail pipe 50 position more on the front.In other words, for example, from observe silencing apparatus 44 with the rectangular direction of fore-and-aft direction in the situation that (, from side or the above-below direction situation of observing silencing apparatus 44), catalyzer 52 is not overlapping with the first connecting tube 74, the second connecting tube 76 and tail pipe 50.Thus, even for example in the case of using the thick larger catalyzer 52 of catalyzer 52(diameter), also can suppress silencing apparatus 44 chaps.
In the above-described embodiment, the situation that is provided with the second expansion chamber X2 in the front of the first dividing plate 70 and is provided with the 3rd expansion chamber X3 at the rear of the first dividing plate 70 is illustrated, but the position of the second expansion chamber and the 3rd expansion chamber is not limited to above-mentioned example.
Fig. 6 and Fig. 7 are the cross section diagram figure that represents the structure of the major component of the silencing apparatus 44a of another embodiment of the present invention.In addition, Fig. 6 is the figure that observes silencing apparatus 44a from left side, and Fig. 7 is the figure that observes silencing apparatus 44a from top.In Fig. 6 and Fig. 7, " F " represents front, and " R " represents rear.Below, only in silencing apparatus 44a, have with the part of silencing apparatus 44 different structures and describe, for having part with silencing apparatus 44 same structures, description thereof is omitted.
With reference to Fig. 6 and Fig. 7, silencing apparatus 44a and silencing apparatus 44 differences are, have silencing apparatus 48a and replace silencing apparatus 48 and have tail pipe 78 and replace tail pipe 50.In this embodiment, tail pipe 78 is equivalent to third connecting pipe.
Silencing apparatus 48a and silencing apparatus 48 differences are, have the first dividing plate 80 and replace the first dividing plate 70, have and the second connecting tube 82 replaced for the second connecting tube 76.In silencing apparatus 48a, be provided with the second expansion chamber Y2 at the rear of the first dividing plate 80, be provided with the 3rd expansion chamber Y3 in the front of the first dividing plate 80.
Tail pipe 78 is further have the 4th tubing 78a being connected with the front end of the first tubing 50a with tail pipe 50 differences.The 4th tubing 78a forwards extends and connects the first dividing plate 80 from the first tubing 50a.In the present embodiment, the front end of the first tubing 50a is embedded in the rearward end of the 4th tubing 78a, for example, by being welded and fixed the first tubing 50a and the 4th tubing 78a.Tail pipe 78 is supported by the first dividing plate 80, second partition 72 and end cap 68d.
The difference of the first dividing plate 80 and the first dividing plate 70 is do not have through hole 70b and have for passing through the through hole 80a of the 4th tubing 78a.Through hole 80a is arranged at the oblique upper left side of through hole 70a.In the present embodiment, the 4th tubing 78a is can connect through hole 80a in the mode of front and back upward sliding with respect to for example the first dividing plate 80.
The difference of the second connecting tube 82 and the second connecting tube 76 is, the size of the fore-and-aft direction of the second connecting tube 82 is less and the second connecting tube 82 do not connect the first dividing plate 80 than the size of the fore-and-aft direction of the second connecting tube 76.The second connecting tube 82 connected through hole 72b(with reference to Fig. 6 to connect the mode of second partition 72 on fore-and-aft direction), thus the first expansion chamber X1 and the second expansion chamber Y2 are communicated with.In the present embodiment, the second connecting tube 82 is for example by being fixedly welded on second partition 72.
In silencing apparatus 44a, flow into the exhaust of the first expansion chamber X1 from outlet pipe 46 by flowing into the second expansion chamber Y2 the second connecting tube 82.Between the outer circumferential face of the exhaust that has flowed into the second expansion chamber Y2 by the 4th tubing 62 and the inner peripheral surface of the first connecting tube 74, flow into the 3rd expansion chamber Y3.The exhaust that has flowed into the 3rd expansion chamber Y3 is discharged to the outside of main part 68 by tail pipe 78.
By above-mentioned this structure, in silencing apparatus 44a, also the same with silencing apparatus 44, can fully reduce the impact that heat that catalyzer 52 produces causes silencing apparatus 44a, and in outlet pipe 46, can effectively reduce near delivery temperature second partition 72.In addition, same with silencing apparatus 44, the assembling of silencing apparatus 44a becomes easily, and the raising of the erasure effect of silencing apparatus 44a, and can suppress silencing apparatus 44a chap.
In silencing apparatus 44a, be provided with the 3rd expansion chamber Y3 and catalyzer 52 in the front of the first dividing plate 80, be provided with the second expansion chamber Y2 at the rear of the first dividing plate 80., catalyzer 52 is arranged on the circulating direction of exhaust and is positioned at more the 3rd expansion chamber Y3 of downstream than the second expansion chamber Y2.In this case, even if because the heat that catalyzer 52 produces rises, also can preventing the exhaust of this temperature rise, the delivery temperature of the 3rd expansion chamber Y3 flows into the second expansion chamber Y2.Thus, can suppress the temperature rise of the exhaust of the second expansion chamber Y2.Its result, can utilize the exhaust of the second expansion chamber Y2 effectively cooling in the interior mobile exhaust of outlet pipe 46.
In the above-described embodiment, the situation of the through hole 70a that connects the first dividing plate 70 or the first dividing plate 80 the first connecting tube 74 is illustrated, but the position of the first connecting tube is not limited to above-mentioned example.
Fig. 8 is the cross section diagram figure that represents the structure of the major component of the silencing apparatus 44b of another embodiment of the invention.In addition, Fig. 8 is the figure that observes silencing apparatus 44b from left side.In Fig. 8, " F " represents front, and " R " represents rear.Below, only in silencing apparatus 44b, have with the part of silencing apparatus 44a different structure and describe, to having, description thereof is omitted with the part of silencing apparatus 44a same structure.
With reference to Fig. 8, silencing apparatus 44b and silencing apparatus 44a different aspect are to have silencing apparatus 48b and replace silencing apparatus 48a.Silencing apparatus 48b and silencing apparatus 48a different aspect be, has the first dividing plate 84 and replace the first dividing plate 80 and have the first connecting tube 74a and replaced for the first connecting tube 74.In addition, as described later, the position of the first connecting tube 74a of silencing apparatus 48b is different from the position of the first connecting tube 74 of silencing apparatus 48a.In silencing apparatus 48b, be provided with the second expansion chamber Z2 at the rear of the first dividing plate 84, be provided with the 3rd expansion chamber Z3 in the front of the first dividing plate 84 and arrange.
The first dividing plate 84 and the first dividing plate 80 different aspects are further have through hole 70b.Through hole 70b is arranged at the first dividing plate 70(with reference to Fig. 3) through hole 70b(with reference to Fig. 3) identical position.
The first connecting tube 74a and first connecting tube 74 different aspect be, than the diameter of the first connecting tube 74, less and the first connecting tube 74a does not connect in through hole 70a(Fig. 8 and does not illustrate the diameter of the first connecting tube 74a.With reference to Fig. 6.) and connect through hole 70b.,, in silencing apparatus 44b, be provided with the first connecting tube 74a in the position of leaving through hole 70a.In this embodiment, for example by welding, the first connecting tube 74a is fixed on to the first dividing plate 84.Thus, the first connecting tube 74a is supported in the first dividing plate 84.In addition, although omit detailed explanation, same with above-mentioned silencing apparatus 44a, the 4th tubing 62 passes through through hole 70a(with reference to Fig. 6 in the mode not contacting with the first dividing plate 84).
In silencing apparatus 44b, flow into the exhaust of the first expansion chamber X1 from outlet pipe 46 by flowing into the second expansion chamber Z2 the second connecting tube 82.The exhaust that has flowed into the second expansion chamber Z2 by through hole 70a(with reference to Fig. 6) and the first connecting tube 74a flow into the 3rd expansion chamber Z3.The exhaust that has flowed into the 3rd expansion chamber Z3 is discharged to the outside of main part 68 by tail pipe 78.
By above-mentioned that structure, also same with silencing apparatus 44a in silencing apparatus 44b, can fully reduce the impact that heat that catalyzer 52 produces causes silencing apparatus 44b, and in outlet pipe 46, can reduce efficiently near delivery temperature second partition 72.In addition, 44a is same with silencing apparatus, and the assembling of silencing apparatus 44b becomes easily, and the raising of the erasure effect of silencing apparatus 44b, and can suppress silencing apparatus 44b chap.
In silencing apparatus 44b, the second expansion chamber Z2 and the 3rd expansion chamber Z3 via through hole 70a(with reference to Fig. 6) be communicated with, and the second expansion chamber Z2 and the 3rd expansion chamber Z3 are communicated with via the first connecting tube 74a.Therefore,, in silencing apparatus 44b, on the basis of the through hole 70a for by outlet pipe 46, can also flow through exhaust from the second expansion chamber Z2 to the 3rd expansion chamber Z3 via the first connecting tube 74a.,, in the first dividing plate 84, exhaust is had to two positions from the second expansion chamber Z2 to the channel setting of the 3rd expansion chamber Z3.In this case, can utilize cooling first dividing plate 84 of exhaust of the path (through hole 70a and the first connecting tube 74a) that flows through these two positions.The heat affecting that thus, can fully be suppressed at the exhaust of flowing through in outlet pipe 46 feeds through to the first dividing plate 84.
In the above-described embodiment, the situation that connects holding part 46a and fixing part 46b between the first dividing plate and second partition is illustrated, but the link position of holding part and fixing part is not limited to above-mentioned example.
Fig. 9 is the cross section diagram figure that represents the structure of the major component of the silencing apparatus 44c of another mode of execution more of the present invention.In addition, Fig. 9 is the figure that observes silencing apparatus 44c from left side.In Fig. 9, " F " represents front, and " R " represents rear.Below, only in silencing apparatus 44c, have with the part of silencing apparatus 44 different structures and describe, for having part with silencing apparatus 44 same structures, description thereof is omitted.
With reference to Fig. 9, silencing apparatus 44c and silencing apparatus 44 different aspects are to have outlet pipe 86 and replace outlet pipe 46.Outlet pipe 86 is to have holding part 86a and replace holding part 46a and have fixing part 86b replacement fixing part 46b with outlet pipe 46 different aspects.
Holding part 86a and holding part 46a different aspect are to have the 4th tubing 88 and replace the 4th tubing 62.The 4th tubing 88 and the 4th tubing 62 different aspects are, the size of the fore-and-aft direction of the 4th tubing 88 is less than the size of the fore-and-aft direction of the 4th tubing 62.
Fixing part 86b and fixing part 46b different aspect are to have fixing tubing 90 and replace fixing tubing 64.Fix tubing 90 and be with fixing tubing 64 different aspects, the size of the fore-and-aft direction of fixing tubing 90 is larger than the size of the fore-and-aft direction of fixing tubing 64.
In silencing apparatus 44c, holding part 86a(the 4th tubing 88) fix tubing 90 with fixing part 86b() be connected in the front of the first dividing plate 70.In the present embodiment, the rearward end of the 4th tubing 88 is embedded in the front end of fixing tubing 90, makes the 4th tubing 88 can be with respect to fixing tubing 90 at front and back upward sliding.
By this structure, in silencing apparatus 44c, connect holding part 86a and fixing part 86b in the position of fully leaving second partition 72.In this case, the length of fixing part 86b is elongated, therefore, utilizes fixing part 86b also can alleviate the impact of the thermal expansion of holding part 86a.For example, when holding part 86a(the 4th tubing 88) in the direction of footpath when thermal expansion, even if fixing part 86b(fixes tubing 90) front end expand in the direction of footpath due to holding part 86a, in the case of the length of fixing part 86b is grown, also can suppress the rear portion side (second partition 72 sides) of fixing part 86b and expand in the direction of footpath.The impact that thus, can fully suppress the thermal expansion of holding part 86a feeds through to second partition 72.
In addition, in silencing apparatus 44c, same with silencing apparatus 44, can use silencing apparatus 48.Therefore the action effect (action effect of the structure based on beyond outlet pipe 46), obtaining in silencing apparatus 44 also can similarly obtain in silencing apparatus 44c.
In above-mentioned, the silencing apparatus 44c that comprises outlet pipe 86, silencing apparatus 48 and tail pipe 50 is illustrated, but outlet pipe 86 also can be used in the silencing apparatus of other structure.For example, silencing apparatus 44a(is with reference to Fig. 6) in also can use outlet pipe 86 to replace outlet pipe 46, silencing apparatus 44b(is with reference to Fig. 8) in also can use outlet pipe 86 to replace outlet pipe 46.
In the above-described embodiment, the situation that was respectively arranged with for the first connecting tube at the first dividing plate 70,80,84 is illustrated, but also can be provided with for the first connecting tube at the first dividing plate 70,80,84.
In the mode of execution shown in Fig. 6 and Fig. 8, be illustrated being provided with the situation of the second connecting tube 82 at second partition 72, but also can be provided with for the second connecting tube 82 at second partition 72.
In the above-described embodiment, the first dividing plate and second partition are had respectively to the roughly situation of bowl-like shape and be illustrated, but the shape of the first dividing plate and second partition is not limited to above-mentioned example.For example, the first dividing plate also can have circular plate shape, and second partition also can have circular plate shape.
The structure of connecting pipe and outlet pipe is not limited to above-mentioned example, can carry out various design alterations.For example, in the above-described embodiment, the situation that is parts separately to the first tubing 56 of connecting pipe 42 and outlet pipe 46 is illustrated, but connecting pipe and the first tubing also can form as one.In other words, connecting pipe and the first tubing also can be set to parts.In this case, connecting pipe is also contained in outlet pipe.In addition, in the above-described embodiment, the first tubing 56 and the second tubing 58 are illustrated for the situation of parts separately, but the first tubing and the second tubing also can form as one.In other words, the first tubing and the second tubing also can be set to parts.Equally, the 3rd tubing and the 4th tubing also can form as one.
The position relationship of outlet pipe, the first connecting tube, the second connecting tube and tail pipe is not limited to above-mentioned example.For example, in the silencing apparatus of the respective embodiments described above, also can make the position of outlet pipe, the first connecting tube, the second connecting tube and tail pipe reversed left to right, also can turn upside down.
Apply Straddle riding type vehicle of the present invention and be not limited to automotive bicycle.Specifically, the present invention is also applicable to other the Straddle riding type vehicle such as vehicle for driving on uneven ground (ATV:ALL-TERRAIN VEHICLE) and automatic tricycle.In addition, apply automotive bicycle of the present invention and be not limited to the automotive bicycle that motor is fixed on to the type of framework.The automotive bicycle (for example, bicycle) of the type that specifically, the present invention also swings with respect to framework applicable to motor.
Above, the preferred embodiment of the present invention is illustrated, but can be clear and definite, only otherwise depart from the scope of the present invention and aim, can carries out various changes.Scope of the present invention is only limited by the claim of adding.

Claims (10)

1. the silencing apparatus that Straddle riding type vehicle is used, it has the catalyzer that engine exhaust is purified, and this silencing apparatus is characterised in that, comprising:
At the main part of the upwardly extending barrel shape in the front and back of this silencing apparatus;
The first dividing plate and second partition, it is arranged in described main part, will in described main part, be divided into the first expansion chamber, the second expansion chamber and the 3rd expansion chamber;
Outlet pipe, it extends in described main part from front to back in the mode that connects described the first dividing plate and described second partition,
Described the first dividing plate is arranged on than described second partition more on the front,
Be provided with described the first expansion chamber at the rear of described second partition,
In described main part, the space in described second partition front is become described the second expansion chamber and described the 3rd expansion chamber by described the first separator lined,
Described in the ratio of described catalyzer in described main part, the first dividing plate position is more on the front arranged in described outlet pipe,
Described the first dividing plate has the through hole being connected by described outlet pipe,
Described outlet pipe in the mode that do not contact with described the first dividing plate by described through hole and be supported in described second partition,
Described exhaust is flow through after described outlet pipe, described the first expansion chamber, described the second expansion chamber and described the 3rd expansion chamber successively, is discharged to described main part outside.
2. silencing apparatus as claimed in claim 1, is characterized in that:
Described outlet pipe comprises the holding part that keeps described catalyzer and the fixing part that is fixed on described second partition,
Described holding part is being connected with described fixing part in the mode of front and back upward sliding with respect to described fixing part.
3. silencing apparatus as claimed in claim 2, is characterized in that:
Described holding part and described fixing part connect between described the first dividing plate and described second partition.
4. silencing apparatus as claimed in claim 2, is characterized in that:
Described holding part is connected in the front of described the first dividing plate with described fixing part.
5. the silencing apparatus as described in any one in claim 1～4, is characterized in that:
Also comprise the first connecting tube that is communicated with described the second expansion chamber and described the 3rd expansion chamber,
Described the first connecting tube described through hole by described the first dividing plate and be supported in described the first dividing plate,
Described outlet pipe passes through in described the first connecting tube in the mode not contacting with described the first connecting tube.
6. the silencing apparatus as described in any one in claim 1～4, is characterized in that:
Also comprise the first connecting tube that is communicated with described the second expansion chamber and described the 3rd expansion chamber,
Described the first connecting tube is supported in described the first dividing plate in the position of leaving described through hole.
7. the silencing apparatus as described in claim 5 or 6, is characterized in that, also comprises:
Be communicated with the second connecting tube of described the first expansion chamber and described the second expansion chamber; With
Be communicated with the third connecting pipe of described the 3rd expansion chamber and described main part outside,
Described the second expansion chamber is arranged at the front of described the first dividing plate,
Described the 3rd expansion chamber is arranged at the rear of described the first dividing plate,
Connect described the first dividing plate and described second partition the second connecting tube and be supported in described the first dividing plate and described second partition,
Third connecting pipe connects described second partition and is supported in described second partition.
8. the silencing apparatus as described in claim 5 or 6, is characterized in that, also comprises:
Be communicated with the second connecting tube of described the first expansion chamber and described the second expansion chamber; With
Be communicated with the third connecting pipe of described the 3rd expansion chamber and described main part outside,
Described the second expansion chamber is arranged at the rear of described the first dividing plate,
Described the 3rd expansion chamber is arranged at the front of described the first dividing plate,
Described the second connecting tube connect described second partition and be supported in described second partition,
Described third connecting pipe connects described the first dividing plate and described second partition and is supported in described the first dividing plate and described second partition.
9. silencing apparatus as claimed in claim 7 or 8, is characterized in that:
Described catalyzer is arranged on than described the first connecting tube, described the second connecting tube and described third connecting pipe more on the front.
10. a Straddle riding type vehicle, is characterized in that:
Comprise the silencing apparatus described in any one in claim 1～9.
CN201310613294.0A 2012-11-27 2013-11-27 Silencing apparatus and Straddle riding type vehicle Active CN103835786B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012258672A JP2014105617A (en) 2012-11-27 2012-11-27 Muffler and saddle riding type vehicle
JP2012-258672 2012-11-27

Publications (2)

Publication Number Publication Date
CN103835786A true CN103835786A (en) 2014-06-04
CN103835786B CN103835786B (en) 2016-03-02

Family

ID=49724462

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310613294.0A Active CN103835786B (en) 2012-11-27 2013-11-27 Silencing apparatus and Straddle riding type vehicle

Country Status (6)

Country Link
EP (1) EP2735715B1 (en)
JP (1) JP2014105617A (en)
CN (1) CN103835786B (en)
BR (1) BR102013030564B1 (en)
ES (1) ES2546634T3 (en)
PH (1) PH12013000358B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105240089A (en) * 2015-10-29 2016-01-13 浙江吉利汽车研究院有限公司 Automobile silencer
CN107288708A (en) * 2017-08-22 2017-10-24 芜湖恒耀汽车零部件有限公司 A kind of motor vehicle exhaust emission silencer
CN109973174A (en) * 2017-12-27 2019-07-05 铃木株式会社 The exhaust apparatus of engine

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6059749B2 (en) * 2015-02-23 2017-01-11 本田技研工業株式会社 Exhaust muffler
JP6335835B2 (en) 2015-04-23 2018-05-30 本田技研工業株式会社 Exhaust system
JP6651026B2 (en) * 2016-09-30 2020-02-19 本田技研工業株式会社 Exhaust system for internal combustion engine
CN106555657B (en) * 2016-11-30 2019-03-22 湖州益环环保工程有限公司 A kind of muffler
JP6706383B2 (en) * 2017-03-27 2020-06-03 本田技研工業株式会社 Exhaust muffler
JP7061020B2 (en) * 2018-06-05 2022-04-27 カワサキモータース株式会社 Exhaust system for saddle-mounted vehicles
US11421568B2 (en) 2020-01-03 2022-08-23 Tenneco Automotive Operating Company Inc. Muffler with internally supported tuner
WO2022209857A1 (en) * 2021-03-30 2022-10-06 本田技研工業株式会社 Exhaust muffler device and saddle-riding vehicle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579956A1 (en) * 1992-07-24 1994-01-26 Corning Incorporated Catalytic converter for internal combustion engines
JP2007023866A (en) * 2005-07-14 2007-02-01 Honda Motor Co Ltd Muffler structure
EP1939415A1 (en) * 2006-12-20 2008-07-02 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system
CN201301745Y (en) * 2008-09-28 2009-09-02 远勤山 Blowdown muffler
CN201802458U (en) * 2010-09-10 2011-04-20 吉林艾瑞环保技术有限公司 Pressure-stabilizing mixed-flow type exhaust purification muffler

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29512732U1 (en) * 1994-09-30 1995-11-02 Zeuna Staerker Kg Silencer for the exhaust system of an internal combustion engine
TW200942320A (en) * 2008-03-26 2009-10-16 Honda Motor Co Ltd Catalyst apparatus, method for production of catalyst apparatus, and structure retaining catalyst carrier

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579956A1 (en) * 1992-07-24 1994-01-26 Corning Incorporated Catalytic converter for internal combustion engines
JP2007023866A (en) * 2005-07-14 2007-02-01 Honda Motor Co Ltd Muffler structure
EP1939415A1 (en) * 2006-12-20 2008-07-02 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system
CN201301745Y (en) * 2008-09-28 2009-09-02 远勤山 Blowdown muffler
CN201802458U (en) * 2010-09-10 2011-04-20 吉林艾瑞环保技术有限公司 Pressure-stabilizing mixed-flow type exhaust purification muffler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105240089A (en) * 2015-10-29 2016-01-13 浙江吉利汽车研究院有限公司 Automobile silencer
CN105240089B (en) * 2015-10-29 2019-03-01 浙江吉利汽车研究院有限公司 A kind of muffler of automobile
CN107288708A (en) * 2017-08-22 2017-10-24 芜湖恒耀汽车零部件有限公司 A kind of motor vehicle exhaust emission silencer
CN109973174A (en) * 2017-12-27 2019-07-05 铃木株式会社 The exhaust apparatus of engine
CN109973174B (en) * 2017-12-27 2022-08-05 铃木株式会社 Exhaust device of engine

Also Published As

Publication number Publication date
CN103835786B (en) 2016-03-02
EP2735715B1 (en) 2015-08-12
EP2735715A1 (en) 2014-05-28
BR102013030564B1 (en) 2021-09-08
BR102013030564A2 (en) 2014-10-14
PH12013000358A1 (en) 2015-06-01
PH12013000358B1 (en) 2015-06-01
ES2546634T3 (en) 2015-09-25
JP2014105617A (en) 2014-06-09

Similar Documents

Publication Publication Date Title
CN103835786A (en) Muffler and saddle type vehicle
CN103670639B (en) The gas extraction system of motorcycle
JP4700041B2 (en) Motorcycle exhaust system
US9016422B2 (en) Saddle-ride type vehicle
JP6012483B2 (en) Exhaust device for saddle riding type vehicle
US9803522B2 (en) Exhaust structure of straddle-type vehicle, and vehicle incorporating same
JP2009083799A (en) Substructure of vehicle
CN101220762A (en) Vehicle exhaust system structure
CN101936200B (en) Silencer apparatus and autobicycle
KR100864769B1 (en) Structure for arrangement of catalyst for motorcycle
BR102014030109A2 (en) motorcycle exhaust system
CN102536409B (en) Exhaust device of vehicle and straddle-type four-wheeled vehicle provided with the same
JP4428651B2 (en) Exhaust catalyst mounting structure for motorcycles
JP2009248824A (en) Vehicle
CN102536408B (en) Exhaust device of vehicle and straddle-type four-wheeled vehicle provided with the same
JP2010269725A (en) Motorcycle
US8746400B2 (en) Exhaust device of engine
JP2007321595A (en) Motorcycle
JP2008284983A (en) Vehicular lower structure
JP2017149166A (en) Saddle-riding type vehicle
CN1959074B (en) Exhaust device for two-wheel motorcycle
JP6695442B2 (en) Exhaust pipe
JP2008049732A (en) Air cleaner structure
JP6457465B2 (en) Exhaust device for saddle riding type vehicle
JP6130262B2 (en) Motorcycle exhaust system

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