CN103237723B - The exhaust gear of Straddle-type vehicle - Google Patents
The exhaust gear of Straddle-type vehicle Download PDFInfo
- Publication number
- CN103237723B CN103237723B CN201180058153.6A CN201180058153A CN103237723B CN 103237723 B CN103237723 B CN 103237723B CN 201180058153 A CN201180058153 A CN 201180058153A CN 103237723 B CN103237723 B CN 103237723B
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- Prior art keywords
- freeing pipe
- discharge chamber
- pipe
- straddle
- type vehicle
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Classifications
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- 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
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- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
- F01N13/141—Double-walled exhaust pipes or housings
- F01N13/143—Double-walled exhaust pipes or housings with air filling the space between both walls
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- 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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
-
- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/06—Tubes being formed by assembly of stamped or otherwise deformed sheet-metal
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The feature of the exhaust gear of this Straddle-type vehicle is, possess the freeing pipe extended from driving engine, the exhaust muffler be connected with the head end of described freeing pipe, described freeing pipe has the curve that its bearing of trend is changed, the discharge chamber of tubulose is set in the mode comprising the periphery at the position of described curve of surrounding described freeing pipe, the bearing of trend that described discharge chamber is included in described freeing pipe is divided into multiple dividing bodies.
Description
Technical field
The present invention relates to the exhaust gear of the Straddle-type vehicles such as motor bike.
No. 2010-273624, Japan's Patent that the application filed an application in Japan based on December 8th, 2010 and CLAIM OF PRIORITY, and its content is incorporated herein.
Background technology
At present, in above-mentioned exhaust gear, the known exhaust gear being provided with Helmholtz resonator, this Helmholtz resonator is filled with sound-absorbing material (such as with reference to patent documentation 1) in the mode of the periphery surrounding freeing pipe.
[patent documentation 1] Japan's utility model registration No. 3159285 publication
But in the freeing pipe formed suitably bending, other components expecting to arrange as described above in the periphery at the position comprising this curve tubulose carry out efficiency and form the such structure of discharge chamber well.
Summary of the invention
Therefore, the object of the invention is to, in the exhaust gear of Straddle-type vehicle, other components that easily can arrange tubulose in the periphery of the freeing pipe with curve carry out efficiency and form discharge chamber well.
In the present invention, in order to solve above-mentioned problem, and have employed following means.
(1) exhaust gear of the Straddle-type vehicle of a mode of the present invention possesses the freeing pipe extended from driving engine, the exhaust muffler be connected with the head end of described freeing pipe, described freeing pipe has the curve that its bearing of trend is changed, the discharge chamber of tubulose is set in the mode comprising the periphery at the position of described curve of surrounding described freeing pipe, the bearing of trend that described discharge chamber is included in described freeing pipe is divided into multiple dividing bodies.
It should be noted that, described Straddle-type vehicle comprises and strides across vehicle body and the rolling stock of riding, not only comprise motor bike (comprising bicycle and the scooter-type vehicle of band primary mover), also comprise the vehicle of three-wheel (except the vehicle of two-wheeled after previous round, a vehicle of taking turns after also comprising front two-wheeled) or four-wheel.
(2) on the basis of above-mentioned (1) mode, can also be configured to, described freeing pipe possesses multiple intercommunicating pore that peripheral space between described discharge chamber and freeing pipe is communicated with the inner space of described freeing pipe.
(3) on the basis of above-mentioned (1) or (2) mode, can also be configured to, described each dividing body of described discharge chamber is made up of the steel pipe of one respectively, and described each dividing body is welded to each other and combines and form described discharge chamber under described freeing pipe is through state wherein.
(4) on the basis of the middle either type in above-mentioned (1) to (3), can also be configured to, the exhaust gear of described Straddle-type vehicle also possesses heat preservation structural component, and discharge chamber described in the ratio that this heat preservation structural component surrounds described freeing pipe keeps the heat be vented by the periphery at the position of described engine side.
(5) on the basis of above-mentioned (4) mode, can also be configured to, described heat preservation structural component is formed as two segmenting structures split along the bearing of trend of described freeing pipe.
(6) on the basis of the middle either type in above-mentioned (1) to (5), can also be configured to, described discharge chamber is configured in the side of the cylinder of described driving engine and the top of crankcase.
(7) on the basis of the middle either type in above-mentioned (1) to (6), can also be configured to, the cutting part that described freeing pipe is split in their extension direction is arranged on the position surrounded by described discharge chamber.
[invention effect]
According to above-mentioned (1) mode, when the periphery comprising the position of curve of freeing pipe arranges the discharge chamber of tubulose, by this discharge chamber is also split on the bearing of trend of freeing pipe (length direction of discharge chamber), thus the discharge chamber of tubulose easily can be set in the periphery comprising the position of curve of freeing pipe, the layout freedom of exhaust gear can be improved thus.
According to above-mentioned (2) mode, discharge chamber also can be utilized as exhaust bypass road, the engine performance of low speed in can improving.In addition, because the periphery at freeing pipe is provided with discharge chamber, the temperature be therefore vented not easily reduces, can the activate in promoting catalyst portion.
According to above-mentioned (3) mode, can improve the capacity rating of group's body joined integrally for the discharge chamber of freeing pipe and tubulose, wherein, the periphery that comprise the position of curve of this discharge chamber to this freeing pipe surrounds.
According to above-mentioned (4) mode, without the need to using the warm materials such as glass wool, just can promote the activate of the catalysing area be arranged on exhaust gear, thus realize cost reduction.
According to above-mentioned (5) mode, after discharge chamber is assembled in freeing pipe, also easily heat preservation structural component can be assembled.
According to above-mentioned (6) mode, around driving engine, discharge chamber can be configured compactly.
According to above-mentioned (7) mode, the outward appearance of exhaust gear can be made good, and the capacity rating of this freeing pipe can be improved simultaneously by the segmentation of freeing pipe.
Accompanying drawing explanation
Fig. 1 is the right side view of the motor bike in embodiments of the present invention.
Fig. 2 is the main portion enlarged drawing of Fig. 1.
Fig. 3 is the front view of the driving engine of above-mentioned motor bike etc.
Fig. 4 is the right side view of the exhaust pipe assembly of above-mentioned motor bike.
Fig. 5 is the upward view of above-mentioned exhaust pipe assembly.
Fig. 6 is the VI-VI cutaway view of Fig. 5.
Fig. 7 is the VII-VII cutaway view of Fig. 5.
Detailed description of the invention
Below, with reference to accompanying drawing, embodiments of the present invention are described.It should be noted that, as recorded without special, in the following description, waiting direction identical with the direction of vehicle illustrated by following all around.Further, in the figure used in the following description, suitable position shows the arrow FR representing vehicle front, the arrow LH representing vehicle left, represents the arrow UP of vehicle up direction.
In the motor bike (Straddle-type vehicle) 1 of the cross-country type shown in Fig. 1, its front-wheel 2 axle is supported on the bottom of front fork 3.The top of front fork 3 is supported by the pivot as to turn to by the head tube 6 of vehicle frame 5 front end via deflecting bar 4.Bogie car is installed 4a on the top of deflecting bar 4.
Welding etc. is joined integrally to be formed by being utilized by multiple steel for vehicle frame 5, has: described head tube 6; From the top of this head tube 6 at the single main frame 7 of vehicle body left and right middle position to tiltedly rear extension; From the rearward end of this main frame 7 branch and more sharply to tilt than main frame 7 to the rear frame 8 of the pair of right and left of tiltedly rear extension to the left and right; From the bottom of head tube 6 vehicle body left and right middle position more sharply to tilt than main frame 7 the single descending framework 9 to tiltedly rear extension.
In addition, vehicle frame 5 has: branch and the underframe 11 of the pair of right and left rearward bending after extending to oblique rear and substantially horizontally extend to the left and right from the bottom of descending framework 9; Be erected at the rearward end of main frame 7 and the single gusset framework 12 up and down between pars intermedia of descending framework 9; The seat frame 13 of the pair of right and left rearward extended from the upper end of left and right rear frame 8 low early and high afterly; From the bottom of left and right rear frame 8 towards the front and back pars intermedia of left and right seat frame 13 to the bearer frame 14 of the pair of right and left of tiltedly rear extension.
The bottom of left and right rear frame 8 is connected respectively integratedly with the curve 8a of the rearward end of left and right underframe 11 via pair of right and left.The pivot cradle 15 of pair of right and left is had in inner circumferential side (front side) welded joint of the portion 8a that bends right and left.The leading section of swing arm 21 can be supported on a pivot on left and right pivot cradle 15 with swinging up and down via pivot 15a.Trailing wheel 22 axle as drive wheel is supported on the rearward end of swing arm 21.The inner side of the annular shape formed at main frame 7, left and right rear frame 8, descending framework 9 and left and right underframe 11 is equipped with the driving engine as primary mover (combustion engine) 30 of motor bike 1.
It should be noted that, in figure, symbol 23 represents the rear damper element be erected between main frame 7 rear end and swing arm 21, symbol 24 represents the seat being bearing in seating passengers on left and right seat frame 13, and symbol 25 represents the Fuel Tank be bearing in the front of seat 24 on main frame 7.
In the lump with reference to Fig. 2,3, driving engine 30 is air cooling singlecylinderengine, is formed as the horizontal layout (all not shown) making the rotation axis of bent axle along left and right directions.Driving engine 30 has erects in the front upper of crankcase 31 basic structure arranged with roughly upright posture (attitude relative to vertical is inclined slightly before) by cylinder 32.Driving engine 30 is single cylinder of small-size light-weight, and by making cylinder 32 roughly uprightly shorten anterior-posterior length, thus become the structure being suitable for cross-country motorcycle.It should be noted that, in figure symbol C1 represent cylinder 32 along the cylinder-bore axis erecting direction.
Cylinder 32 has cylinder main body 33, cylinder head 34 and cylinder-cover jacket 35 in turn from crankcase 31 side.Be connected with intake system part (carburettor or throttle gate district) 36 at the rear portion (suction side) of cylinder head 34, be connected with the freeing pipe 41 of the exhaust gear that the present application relates in the front portion (exhaust side) of cylinder head 34.Multiple radiating gill 37 is formed in the periphery of cylinder main body 33 and cylinder head 34.
Being fitted together in cylinder main body 33 is provided with along the reciprocating piston of cylinder-bore axis C1, the crank motion of this piston is converted into the rotary motion of bent axle, and this rotary motion power is transmitted (all not shown) to trailing wheel 22 from the rear left of crankcase 31 via chain type transmission mechanism.
Crankcase 31 has: with the division plane B orthogonal with left and right directions for boundary and left and right segmentation left and right case halfbody 31a, 31b; The left case cover 31c that the left surface orthogonal with left and right directions of left case halfbody 31a is installed; The right case cover 31d that orthogonal with the left and right directions right flank of right case halfbody 31b is installed.Described division plane B is biased to the right relative to vehicle body left and right longitudinal plane of symmetry CL.It should be noted that, in figure, symbol R represents the right side of crankcase 31 (right case cover 31d).
The recoil main shaft 38 of kick starter is given prominence to the right at the rear right of crankcase 31, the base end part 39a of the recoil arm 39 that is fixedly clamped at the outshot of this recoil main shaft 38.Recoil arm 39 is supported as rotating by base end part 39a, thus metamorphosis can be made to become the receiving state configured substantially in parallel with the right side R of crankcase 31 and the using state of stretching out to the right from right side R.
The exhaust port outlet 34a pointing to oblique right front is provided with on the right side of the front surface of cylinder head 34.What this exhaust port outlet 34a was connected with freeing pipe 41 from its pointing direction (oblique right front) exports the coaxial base end part of 34a with exhaust port.
The exhaust gear of motor bike 1 possesses: based on the exhaust pipe assembly 40 of the freeing pipe 41 extended from exhaust port outlet 34a; The exhaust muffler (silencer) 48 be connected with the head end of freeing pipe 41.
In the lump with reference to Fig. 4,5, freeing pipe 41 passes through round steel pipe (comprising stainless steel tube) bending forming to be that regulation shape forms.It should be noted that, in figure, symbol E represents the central axis along bearing of trend (length direction) of freeing pipe 41.
Freeing pipe 41 extends from exhaust port outlet 34a to oblique right front, towards right abaft and slightly below is bending (following immediately, this curve is called the first curve 42), afterwards in the right side side of cylinder 32 and the top of crankcase 31 (right case cover 31d) towards relative to fore-and-aft direction slightly by inside overall width direction and the linearly extension slightly by inclined upward (following, this line part is called the first line part 43).It should be noted that, in figure, symbol 9a represents the recess guaranteeing to be formed on the right side of the pars intermedia up and down of descending framework 9 with the gap of the first curve 42.
In addition, freeing pipe 41 is (following slightly by lateral bend in overall width direction towards oblique lower rear after the right side square tube of cylinder 32, this curve is called the second curve 44), tilt and linearly extension (following, this line part to be called the second line part 45) slightly by inside overall width direction towards oblique lower rear at the rear upper of crankcase 31 (right case cover 31d) afterwards.Second line part 45 is by inside the overall width direction that is in the pars intermedia up and down of the recoil arm 39 of receiving state.
And, under side-looking is observed, freeing pipe 41 bends (following in the front position of closelying follow of the right corner plate 16 of vehicle frame 5 towards rear, this curve is called the 3rd curve 46), the linearly extension along fore-and-aft direction towards rear inside the overall width direction of the pars intermedia up and down of right back framework 8 and the leading section of right corner plate 16 afterwards (following, this line part to be called the 3rd line part 47).3rd line part 47 forms the rearward end (cephalic par) of freeing pipe 41.
Right corner plate 16 is in the tabular orthogonal with overall width direction, and band shape long before and after being formed as under side-looking is observed, the solder bond of pars intermedia up and down of its front end and right back framework 8, rear end is combined with the lower weld of right bearer frame 14.
The exhaust muffler 48 low early and high after ground tilted configuration of tubular is in the upper right of trailing wheel 22.
Exhaust muffler 48 is multiple-stage expansion, will be vented and discharge from rear end while the exhaust gas pressure of the exhaust imported from its front end is decayed.Exhaust ingress pipe 49 extends towards oblique inferoanterior side-looking is observed from the leading section of exhaust muffler 48.Exhaust ingress pipe 49 becomes bending toward the front immediately following front position of right corner plate 16 under side-looking is observed, and the linearly extension toward the front along fore-and-aft direction inside the overall width direction of right corner plate 16.In the leading section of this exhaust ingress pipe 49, insert the rearward end of freeing pipe 41, in this condition by clamping component 49a by exhaust ingress pipe 49 and freeing pipe 41 one and can install and remove fastening, be connected.
Be provided with coaxial with it in the front portion of exhaust ingress pipe 49 and there is the catalysing area 49b of the profile of the cylindrical shape in slightly large footpath.This catalysing area 49b promotes temperature by the reaction being heated to regulation, carries out the purification of the exhaust by its inside.The front portion of exhaust ingress pipe 49 is fastening by the bolt 49c screwed togather outside overall width direction is supported on right corner plate 16.
Here, with reference to Fig. 2,4,5,6, the discharge chamber 51 of the cylindrical extension coaxial with above-mentioned position is installed in the periphery from the leading section of the first line part 43 to the position of the leading section of the second line part 45 of freeing pipe 41.Discharge chamber 51 is vacated predetermined distance and surrounds the periphery of freeing pipe 41, and make the first intercommunicating pore 57 of being formed at the lower end position of the leading section of the first line part 43 and the second intercommunicating pore 58 of being formed at the lower end position of the leading section of the second line part 45 to peripheral space 59 opening formed in the periphery of freeing pipe 41.
Exhaust flows in discharge chamber 51 from the first intercommunicating pore 57 of discharge chamber 51 upstream side, and returns from second intercommunicating pore 58 in discharge chamber 51 downstream to freeing pipe 41.That is, discharge chamber 51 as freeing pipe 41 by pass line and play a role.
The front and back end of peripheral space 59 is closed, this peripheral space 59 is communicated with by each intercommunicating pore 57,58 with the inner space of freeing pipe 41, a part for exhaust thus in freeing pipe 41 flows into peripheral space 59, thus the soundproof effect that the expansion obtaining exhaust is played, and by the bypass effect between each intercommunicating pore 57,58, exhaust performance is improved, and then improve the output of driving engine 30.
Discharge chamber 51 is split into following three parts: the first pipe portion 52 surrounding the periphery (comprising the first intercommunicating pore 57 around) the front and back pars intermedia from the leading section of the first line part 43 to this first line part 43; Surround the second pipe portion 53 of the periphery the leading section from the front and back pars intermedia of the first line part 43 to the second curve 44; Surround the 3rd pipe portion 54 of the periphery (comprising the second intercommunicating pore 58 around) the leading section from the leading section of the second curve 44 to the second line part 45.
First and second pipe portion 52,53 is made up of the round steel pipe of the linearity of the central axis 43a along the first line part 43.
In the lump with reference to Fig. 6, the front and back end in the first pipe portion 52 is by cut along the mode of the orthogonal plane orthogonal with the central axis 43a of the first line part 43.The leading section in the first pipe portion 52 becomes the front tapered portion 52a of more past front side more undergauge, and the head end edge of this front tapered portion 52a connects with the periphery of freeing pipe 41, and their solder bond integratedly on complete cycle.
The front end in the second pipe portion 53 is by cut along the mode of the orthogonal plane orthogonal with the central axis 43a of the first line part 43.On the other hand, the rear end in the second pipe portion 53 is by cut along the mode of the orthogonal plane (plane relative to the orthogonal plane orthogonal with the central axis 43a of the first line part 43 tilts) orthogonal with the central axis 44a of the second line part 45.The rearward end 52b in the first pipe portion 52 is embedded in the leading section 53a inner circumferential in the second pipe portion 53, and their solder bond integratedly on complete cycle.
3rd pipe portion 54 is made up of the round steel pipe being formed as cone shape, and its front end is cut by the mode of the rear end along the second pipe portion 53, and on the other hand, rear end is by cut along the mode of the orthogonal plane orthogonal with the central axis 44a of the second line part 45.3rd pipe portion 54 with from its front end towards rear end lentamente the mode of undergauge formed.The rearward end 53b in the second pipe portion 53 is embedded in the leading section 54a periphery in the 3rd pipe portion 54, and their solder bond integratedly on complete cycle.The rearward end in the 3rd pipe portion 54 is formed as the rear tapered portion 54b of more past rear side more undergauge, and the head end edge of this rear tapered portion 54b connects with the periphery of freeing pipe 41, and their solder bond integratedly on complete cycle.
In the present embodiment, the position of freeing pipe 41 in the second pipe portion 53 of the front and back pars intermedia through the first line part 43, is divided into two parts in the longitudinal direction.At this cutting part 41a place, the rearward end of freeing pipe 41 front portion is embedded in the leading section inner circumferential at freeing pipe 41 rear portion, and their solder bond integratedly on complete cycle.By being covered by discharge chamber 51 by such cutting part 41a, the aesthetic appearance that can realize exhaust gear thus improves.It should be noted that, the structure formed before and after freeing pipe 41 can certainly be configured to.
In the lump with reference to Fig. 7, be provided with the heat preservation structural component 61 of circular tube shaped in the front of discharge chamber 51, this heat preservation structural component 61 is vacated predetermined distance and surrounds the periphery of the latter half of the first curve 42.Heat preservation structural component 61 suppresses the temperature of exhaust to reduce and easily catalysing area 49b is heated to reaction and promotes temperature, and it is coaxial and bend along the latter half of the first curve 42 and arrange with the latter half of the first curve 42.It should be noted that, heat preservation structural component 61 only forms the peripheral space 64 of insulation in the periphery of the latter half of the first curve 42, but also can be formed as the structure being filled with thermal insulation material in this peripheral space 64.
Heat preservation structural component 61 is divided into upper these two parts of lower semi-body 62,63 by along the inner peripheral of the first curve 42 and the division plane of outer peripheral edges.Upper lower semi-body 62,63 is such as independently Steel Sheet product, and end edge portion 62a, 63a along described division plane of upper lower semi-body 62,63 overlap each other diametrically, and in the total length of heat preservation structural component 61 solder bond integratedly.Thus, the heat preservation structural component 61 along the bending circular tube shaped of the first curve 42 is formed.
Heat preservation structural component 61 is in more by the conical by its shape of driving engine 30 side more gently undergauge, and the ora terminalis of the end 61a of driving engine 30 side of heat preservation structural component 61 connects with the periphery of freeing pipe 41, and their solder bond integratedly on complete cycle.In addition, the end 61b of discharge chamber 51 side of heat preservation structural component 61 is in the diameter roughly the same with discharge chamber 51, and the ora terminalis of this end 61b connects with the front tapered portion 52a of discharge chamber 51, and their solder bond integratedly on complete cycle.
Here, also can be formed as the structure (structure that peripheral space 59 that the peripheral space 64 that make heat preservation structural component 61 be formed and discharge chamber 51 formed be communicated with) of heat preservation structural component 61 as a part for discharge chamber 51.
It should be noted that, in figure, symbol 66 represents that the rearward end at freeing pipe 41 fixedly advises the stop collar of the insertion of having directional exhaust ingress pipe 49, symbol 67 represents to be fixed and to the Inserting Tube that inserts in exhaust port outlet 34a at the leading section of freeing pipe 41, symbol 68 represents with the leading section movable fit of freeing pipe 41 and is fastened to exhaust port and exports around 34a, thus Inserting Tube 67 is remained on the fastening rib in exhaust port outlet 34a, symbol 69 represent from top and overall width direction outer side covers freeing pipe 41 from the protective cover between latter half to the second line part 45 of the first curve 42, symbol 69a and 69b has been expressed as and freeing pipe 41 has been fixed in the front and back of protective cover 69 and protective cover bracket and rear defence shroud bracket before being weldingly fixed on the コ shape on the periphery of freeing pipe 41.By being installed on freeing pipe 41 by above-mentioned each parts, discharge chamber 51 and heat preservation structural component 61, form described exhaust pipe assembly 40 thus.
Then, the manufacture of exhaust pipe assembly 40, the order of assembling are described.
First, regulation round steel pipe on to implement bending machining to form freeing pipe 41 along the mode of described central axis E.It should be noted that, when freeing pipe 41 is partition type, after respectively bending machining is carried out to each dividing body, their solder bond are integrated.
Then, this freeing pipe 41 sequentially installs the 3rd pipe portion of pipe portion 54, second 53 and the first pipe portion 52 from the first curve 42 side, first, by the rear tapered portion 54b solder bond in the 3rd pipe portion 54 on freeing pipe 41.Afterwards, the rearward end 53b in solder bond second pipe portion 53 on the leading section 54a in the 3rd pipe portion 54, the rearward end 52b in solder bond first pipe portion 52 on the leading section 53a in the second pipe portion 53, and by tapered portion 52a solder bond before the first pipe portion 52 on freeing pipe 41.
Afterwards, upper lower semi-body 62,63 is arranged on this first curve 42 in the mode sandwiching the first curve 42, and end edge portion 62a, 63a of upper lower semi-body 62,63 are welded to one another combination, thus shape all-in-one-piece heat preservation structural component 61.By heat preservation structural component 61 is formed as two segmenting structures, on the first curve 42 of ratio of curvature comparatively large (degree of crook is large), also heat preservation structural component 61 can be easily installed thus.The end 61a of driving engine 30 side of this heat preservation structural component 61 and freeing pipe 41 solder bond, the end 61b of discharge chamber 51 side of heat preservation structural component 61 and the front tapered portion 52a solder bond in the first pipe portion 52.
Before or after heat preservation structural component 61 is installed on freeing pipe 41, at the leading section movable fit fastening rib 68 of freeing pipe 41, and at freeing pipe 41 front end solder bond Inserting Tube 67.In addition, stop collar 66 is welded and fixed at the base end part (leading section) of the rearward end (the 3rd line part 47) of freeing pipe 41.
Rear defence shroud bracket 69b is in the second line part 45 solder bond of arbitrary moment and freeing pipe 41.In addition, front protective cover bracket 69a the first pipe portion 52 is installed on before or after freeing pipe 41 with the first pipe portion 52 solder bond.The front and back end of fastening fixed blade guard 69 on above-mentioned front and back protective cover bracket 69a, 69b.
By more than, complete the manufacture of the exhaust pipe assembly 40 possessing discharge chamber 51 grade in the periphery of freeing pipe 41, assembling.
As discussed above, the exhaust gear of the Straddle-type vehicle in above-mentioned embodiment is used for motor bike 1, possesses the freeing pipe 41 extended from driving engine 30, the exhaust muffler 48 be connected with the head end of described freeing pipe 41, wherein, described freeing pipe 41 has multiple curves 42 that its bearing of trend is changed, 44, 46, the exhaust gear of described Straddle-type vehicle possesses and comprises described each curve 42 to described freeing pipe 41, 44, at least one (curve 44) in 46 carries out the discharge chamber 51 of the tubulose surrounded in the periphery at interior position, described discharge chamber 51 is divided into multiple part on the bearing of trend of described freeing pipe 41.
According to this structure, when the periphery comprising the position of curve 44 of freeing pipe 41 arranges the discharge chamber 51 of tubulose, by discharge chamber 51 is also above split at the bearing of trend (length direction of discharge chamber 51) of freeing pipe 41, the discharge chamber 51 of tubulose easily can be set thus on the periphery comprising the position of curve 44 of freeing pipe 41, the layout freedom of exhaust gear can be improved thus.
In addition, in the exhaust gear of above-mentioned Straddle-type vehicle, described freeing pipe 41 arranges multiple intercommunicating pores 57,58 that the peripheral space 59 between described discharge chamber 51 and freeing pipe 41 is communicated with the inner space of this freeing pipe 41, discharge chamber 51 also can be utilized as exhaust bypass road thus.
In addition, in the exhaust gear of above-mentioned Straddle-type vehicle, the dividing body (each pipe portion 52,53,54) of described discharge chamber 51 is made up of the steel pipe of one respectively, and each pipe portion 52,53,54 is welded to each other combination and forms described discharge chamber 51 under described freeing pipe 41 is through state wherein, can improve the capacity rating of group's body (exhaust pipe assembly 40) joined integrally for the discharge chamber 51 of freeing pipe 41 and tubulose thus, wherein, the periphery that comprise the position of curve 42,44,46 of this discharge chamber 51 to this freeing pipe 41 surrounds.
In addition, the exhaust gear of above-mentioned Straddle-type vehicle possesses heat preservation structural component 61, this heat preservation structural component 61 leans on the periphery at the position of driving engine 30 side to surround the heat keeping exhaust to discharge chamber described in the ratio of described freeing pipe 41 51, can promote the activate of the catalysing area 49b be arranged on exhaust gear thus.
In addition, in the exhaust gear of above-mentioned Straddle-type vehicle, described heat preservation structural component 61 is two segmenting structures split along the bearing of trend of described freeing pipe 41, still can easily assemble heat preservation structural component 61 thus after discharge chamber 51 is assembled in freeing pipe 41.
In addition, in the exhaust gear of above-mentioned Straddle-type vehicle, the cutting part 41a that described freeing pipe 41 is split in their extension direction is arranged on the position surrounded by described discharge chamber 51, the outward appearance of exhaust gear can be made thus good, and the capacity rating of freeing pipe 41 can be improved simultaneously by the segmentation of freeing pipe 41.
In addition, in the exhaust gear of above-mentioned Straddle-type vehicle, described discharge chamber 51 is configured in the side of the cylinder 32 of described driving engine 30 and the top of crankcase 31, can configure discharge chamber 51 compactly thus around driving engine 30.
It should be noted that, the present invention is not limited to above-mentioned embodiment, such as not only go for motor bike (comprising bicycle and the scooter-type vehicle of band primary mover), the Straddle-type vehicle of three-wheel (except the vehicle of two-wheeled after previous round, a vehicle of taking turns after also comprising front two-wheeled) or four-wheel can also be applicable to.
Further, the structure in above-mentioned embodiment is an example of the present invention, certainly can carry out various change without departing from the spirit and scope of the invention.
[industrial applicibility]
According to the present invention, in the exhaust gear of Straddle-type vehicle, other components of tubulose easily can be set in the periphery of the freeing pipe with curve, thus efficiency forms discharge chamber well.
[nomenclature]
1 motor bike (Straddle-type vehicle)
30 driving engines
31 crankcases
32 cylinders
41 freeing pipes
41a cutting part
48 exhaust mufflers
42 first curves
44 second curves
46 the 3rd curves
51 discharge chambers
52 first pipe portions (dividing body)
53 second pipe portions (dividing body)
54 the 3rd pipe portions (dividing body)
57 first intercommunicating pores
58 second intercommunicating pores
59 peripheral space
61 heat preservation structural components
Claims (7)
1. an exhaust gear for Straddle-type vehicle, is characterized in that, possesses:
From the freeing pipe that driving engine extends; And
The exhaust muffler be connected with the head end of described freeing pipe,
Described freeing pipe has the first line part, the curve after described first line part, the bearing of trend of described freeing pipe being changed, the second line part after described curve,
The discharge chamber of tubulose is set in the mode comprising the periphery at the position of described curve of surrounding described freeing pipe,
The pipe portion of the periphery the pipe portion that described discharge chamber is split into the periphery surrounded leading section from the front and back pars intermedia of described first line part to described curve and the leading section surrounding from the leading section of described curve to described second line part, the bearing of trend being included in described freeing pipe is divided into multiple dividing bodies.
2. the exhaust gear of Straddle-type vehicle according to claim 1, is characterized in that,
Described freeing pipe possesses multiple intercommunicating pore that peripheral space between described discharge chamber and freeing pipe is communicated with the inner space of described freeing pipe.
3. the exhaust gear of Straddle-type vehicle according to claim 1, is characterized in that,
Described each dividing body of described discharge chamber is made up of the steel pipe of one respectively, and described each dividing body is welded to each other and combines and form described discharge chamber under described freeing pipe is through state wherein.
4. the exhaust gear of Straddle-type vehicle according to claim 1, is characterized in that,
The exhaust gear of described Straddle-type vehicle also possesses heat preservation structural component, and discharge chamber described in the ratio that this heat preservation structural component surrounds described freeing pipe keeps the heat be vented by the periphery at the position of described engine side.
5. the exhaust gear of Straddle-type vehicle according to claim 4, is characterized in that,
Described heat preservation structural component is formed as two segmenting structures split along the bearing of trend of described freeing pipe.
6. the exhaust gear of Straddle-type vehicle according to claim 1, is characterized in that,
Described discharge chamber is configured in the side of the cylinder of described driving engine and the top of crankcase.
7. the exhaust gear of Straddle-type vehicle according to claim 1, is characterized in that,
The cutting part that described freeing pipe is split in their extension direction is arranged on the position surrounded by described discharge chamber.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010273624 | 2010-12-08 | ||
| JP2010-273624 | 2010-12-08 | ||
| PCT/JP2011/077047 WO2012077500A1 (en) | 2010-12-08 | 2011-11-24 | Exhaust device for saddled vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103237723A CN103237723A (en) | 2013-08-07 |
| CN103237723B true CN103237723B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180058153.6A Active CN103237723B (en) | 2010-12-08 | 2011-11-24 | The exhaust gear of Straddle-type vehicle |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JP5513630B2 (en) |
| CN (1) | CN103237723B (en) |
| AR (1) | AR084008A1 (en) |
| BR (1) | BR112013016545B1 (en) |
| CO (1) | CO6741163A2 (en) |
| PE (1) | PE20140787A1 (en) |
| WO (1) | WO2012077500A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5913410B2 (en) * | 2014-03-20 | 2016-04-27 | 本田技研工業株式会社 | Exhaust pipe structure of motorcycle |
| JP2017150310A (en) * | 2014-07-04 | 2017-08-31 | ヤマハ発動機株式会社 | Engine unit and ride type vehicle |
| JP2017150312A (en) * | 2014-07-04 | 2017-08-31 | ヤマハ発動機株式会社 | Engine unit and vehicle |
| JP2016023574A (en) * | 2014-07-18 | 2016-02-08 | スズキ株式会社 | Exhaust pipe for saddle-riding type vehicle |
| JP6524700B2 (en) * | 2015-02-24 | 2019-06-05 | スズキ株式会社 | Internal combustion engine exhaust system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2594469Y (en) * | 2003-01-13 | 2003-12-24 | 重庆力帆实业（集团）有限公司 | Motorcycle noise silencer |
| JP3159285U (en) * | 2008-04-30 | 2010-05-13 | ヤマハ発動機株式会社 | Exhaust device for saddle riding type vehicle and saddle riding type vehicle |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08260956A (en) * | 1995-03-23 | 1996-10-08 | Suzuki Motor Corp | Assembly structure of silencer in two-cycle engine |
| JPH09303144A (en) * | 1996-05-16 | 1997-11-25 | Honda Motor Co Ltd | Spark ignition type two-cycle engine |
| JP3410937B2 (en) * | 1997-09-03 | 2003-05-26 | 本田技研工業株式会社 | Muffler device for two-cycle engine |
| JP2007292049A (en) * | 2006-03-29 | 2007-11-08 | Yamaha Motor Co Ltd | Exhaust apparatus for straddle-type vehicle and straddle-type vehicle |
-
2011
- 2011-11-24 CN CN201180058153.6A patent/CN103237723B/en active Active
- 2011-11-24 BR BR112013016545-6A patent/BR112013016545B1/en active IP Right Grant
- 2011-11-24 JP JP2012547780A patent/JP5513630B2/en active Active
- 2011-11-24 WO PCT/JP2011/077047 patent/WO2012077500A1/en active Application Filing
- 2011-11-24 PE PE2013001274A patent/PE20140787A1/en active IP Right Grant
- 2011-11-25 AR ARP110104412A patent/AR084008A1/en active IP Right Grant
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2594469Y (en) * | 2003-01-13 | 2003-12-24 | 重庆力帆实业（集团）有限公司 | Motorcycle noise silencer |
| JP3159285U (en) * | 2008-04-30 | 2010-05-13 | ヤマハ発動機株式会社 | Exhaust device for saddle riding type vehicle and saddle riding type vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CO6741163A2 (en) | 2013-08-30 |
| PE20140787A1 (en) | 2014-06-12 |
| CN103237723A (en) | 2013-08-07 |
| JPWO2012077500A1 (en) | 2014-05-19 |
| WO2012077500A1 (en) | 2012-06-14 |
| BR112013016545A2 (en) | 2016-09-27 |
| AR084008A1 (en) | 2013-04-17 |
| JP5513630B2 (en) | 2014-06-04 |
| BR112013016545B1 (en) | 2021-04-27 |
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