CN101314390A - Exhaust system of motorcycle - Google Patents
Exhaust system of motorcycle Download PDFInfo
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- CN101314390A CN101314390A CNA2008100987094A CN200810098709A CN101314390A CN 101314390 A CN101314390 A CN 101314390A CN A2008100987094 A CNA2008100987094 A CN A2008100987094A CN 200810098709 A CN200810098709 A CN 200810098709A CN 101314390 A CN101314390 A CN 101314390A
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- silencer
- motorcycle
- exhaust gas
- exhaust system
- stay
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
This invention provides a motorbike exhaust system. An exhaust pipe is connected to an exhaust opening of engine. The longitudinal direction of an exhaust gas catalyst roughly extends the vehicle direction of the motorbike. The longitudinal direction of the muffler extends the forward and backward directions of the motorbike. The front end of the muffle extends to the front side of the motor bike and is overlapped with the exhaust gas catalysis so that the exhaust gas catalysis is covered by the muffle. The motorbike body is the framework structure, including: a head tube; a main framework having roughly quadrate cross section and extending downwards fro the head tube to the rear part; a rear framework connecting to the rear side of the main framework and extending to the right upper side and left upper side of the rear part; a rear framework placed at the lower side of the rear framework of the upper side and extending to the right lower side and left lower side of the lower side; an opening side of a plate assembly with U-shaped cross section is connected to surfaces of two sides of the rear end part of the main framework; and surfaces at two sides of the sealed end side of the plate assembly is connected to the rear framework of the lower side.
Description
Technical field
The present invention relates to dispose the exhaust system for motorcycle of exhaust gas catalyzer.In addition, the present invention relates to be used for the car body frame structure of motor bike, it comprises main frame and a pair of upper left side and upper right side rear frame and a pair of lower-left side and the lower right side rear frame that extend upwardly to the rear portion from main frame.
The application proposes the priority request for the Japanese patent application No.2007-147202 of the Japanese patent application No.2007-151621 of application on June 7th, 2007 and application on June 1st, 2007, incorporates its full content into according to the scope of authority here.
Background technology
Exhaust system for motorcycle is known by the people, wherein, dispose exhaust gas catalyzer and be connected to waste pipe at centre portion and extend to rear side, about 180 ° then to front curve, in the front side further crooked backward 180 °, be connected to silencer in location by feasible path then near silencer.Such exhaust system for motorcycle is open in Japanese Patent No.38441 59.The length that the exhaust system for motorcycle described in Japanese Patent No.3844159 keeps freeing pipe to be realizing the inertia effect of exhaust near the zone of silencer by feasible path, thereby and avoided the increase of vehicle width and height by the rear side that exhaust system is arranged in combustion engine.In addition, the exhaust conversion performance is discharged gas inflow exhaust gas Catalyst and is kept higher exhaust temperature to be improved by making.
In the exhaust system for motorcycle of describing in Japanese Patent No.3844159, thereby silencer is arranged to improve outward appearance at the side of waste gas exhaust gas catalyzer to hide exhaust gas catalyzer with silencer in lateral plan.In this example, because the major axis of silencer and the major axis of exhaust gas catalyzer are arranged in parallel, it is longer that freeing pipe becomes, and increased productive costs.In addition, the degree of freedom of exhaust system layout also is restricted.The some problems that cause are thus also solved.
Disclose the car body frame structure that is used for motor bike in Japanese Patent No.3548173, wherein, main frame comprises: from the beginning pipe (head pipe) extends downward the square cross-sectional plane of being roughly of rear portion; The side at rear portion that joins main frame to can support a pair of right side and the left side pivot plate (pivot plate) that trailing wheel is carried out the back vent of journal rest with freely swinging; Join a pair of upper right side and the upper left side rear frame of rear portion to extend upwardly to the rear portion of main frame to; With the bottom that is arranged in the upside rear frame and join the rear end part of main frame to and the backboard of pivot plate and extend upwardly to a pair of lower right side and the lower-left body side frame at rear portion.
The body shell of in Japanese Patent No.3548173, describing that is used for motor bike, because being engaged to, a pair of upper right side and upper left side rear frame and a pair of lower right side and rear flank, lower-left framework have the high rigidity main frame that is roughly square cross section, main frame must extend up to rear side and have high density, thereby has improved cost to a certain extent.Making thus must the further yield rate that improves main frame.And, in order to reduce cost the back seat treadle being attached in the example of downside rear frame, the diameter of pipe must increase to improve the intensity of downside rear frame.And when driving engine adopts compact design when reducing the driving engine width, the spacing of pivot plate also must narrow down in view of the above.In any example, because the interval of a pair of lower right side and rear flank, lower-left framework narrows down, the width of the rear end part of the main frame to the downside rear frame to be joined must be handled by punching press and narrow, so that the downside rear frame joins main frame to, thereby might cause that productive costs increases.
Summary of the invention
Proposition of the present invention is in order to address these problems, therefore thereby the purpose of embodiments of the invention provides by hide the exhaust system for motorcycle that exhaust gas catalyzer can improve the outward appearance of motor bike and can reduce productive costs by the length that minimizes freeing pipe with silencer on the side-looking direction
In order to realize the purpose of embodiments of the invention, the exhaust system for motorcycle that is disposed comprises: the freeing pipe that is connected to engine exhaust port; Be configured in the path of waste pipe to hold the exhaust gas catalyzer that is used to transform the catalyst of discharging gas; Silencer with the downstream end that is connected to freeing pipe.The characteristics of exhaust system for motorcycle are that exhaust gas catalyzer is arranged to longitudinal direction roughly along the overall width direction of motor bike, silencer is arranged to longitudinal direction roughly along the forward and backward directions of motor bike, and extend forward in motor bike the front portion of silencer, and when observing from the side and exhaust gas catalyzer overlapping.
According to embodiments of the invention, silencer disposes first stay that roughly is arranged on the longitudinal direction middle part and fore second stay is set.First stay is installed to back seat treadle load-carrying element, and second stay is installed to pivot can support back vent with freely swinging.
According to embodiments of the invention, main support almost forms U-shaped in lateral plan, and is arranged to the downside at the waste gas exhaust gas catalyzer when main support is packed up.
According to embodiments of the invention, silencer has the oval cross section of vertical elongation on respect to the vertical direction of the longitudinal direction of silencer.
According to embodiments of the invention, freeing pipe is connected to exhaust opening of engine, and exhaust gas catalyzer is arranged to longitudinal direction roughly along the overall width direction of motor bike, and silencer is arranged to longitudinal direction roughly along the forward and backward directions of motor bike.Therefore, because the front portion of silencer is extended forward in motor bike and be overlapping with exhaust gas catalyzer in lateral plan, silencer can hide exhaust gas catalyzer in the side, and the outward appearance of motor bike can be modified thus.In addition, because the length of freeing pipe can be minimized, the productive costs of exhaust system can be lowered.
According to embodiments of the invention, silencer disposes first stay that roughly is arranged on the longitudinal direction middle part and fore second stay is set.Because first stay is installed to back seat treadle load-carrying element and second stay is installed to the pivot that the support back vent freely swings.Silencer is that the vibration of fulcrum can be suppressed by second stay with first stay on swaying direction.And, because second stay is installed to pivot, can be reduced with the number that is used to install the relevant member of silencer, make productive costs be minimized thus.And, when second stay is elongated, but the assembleability of exhaust system can be improved, this is because second stay can absorb the production tolerance in order to the member that silencer is installed.
According to embodiments of the invention, main support almost forms arc in lateral plan.Because when main support is packed up, it is arranged to the downside at the waste gas exhaust gas catalyzer, exhaust gas catalyzer can be protected in order to avoid when vehicle ', be subjected to damage such as the small grit of upspringing.
According to embodiments of the invention, because silencer forms the oval cross section with vertical elongation on respect to the vertical direction of the longitudinal direction of silencer, silencer can easily hide exhaust gas catalyzer in lateral plan.And because silencer length can be shortened when keeping big capacity, silencer can be formed compactly.
The problem that is proposed above being conceived to, the purpose of embodiments of the invention are to provide motorcycle body framework in order to the rigidity balance of optimizing body shell, reduce production costs and improve the design-calculated degree of freedom.
Realizing embodiments of the invention, the car body frame structure that is used for motor bike comprises: in order to support the head pipe that front-wheel is carried out the front fork of journal rest rotationally; Have and be roughly the main frame that the also downward from the beginning pipe of square cross-sectional plane extends to the rear portion; Pair of engaging to the side at the rear portion of main frame can support right side and the left side pivot plate that trailing wheel is carried out the back vent of journal rest with freely swinging; A pair of upper right side and the upper left side framework that is engaged to the rear side of main frame and extends up to the rear portion; With a pair of lower right side and rear flank, the lower-left framework that is arranged in the downside of upside rear frame and extends up to the rear portion, wherein provide board member with the cross-sectional plane that is roughly U-shaped.The open side of board member is engaged to two side surfaces of the rear end part of main frame, and is engaged to the downside rear frame at two side surfaces of the closed end of board member.
According to embodiments of the invention, board member is narrowing down along the overall width direction near the part that is arranged in the motor bike rear side.
According to embodiments of the invention, the narrowed width of the part of board member also forms curved surface.
According to embodiments of the invention, the backboard that is used for coupling along the overall width direction a pair of right side and left side pivot plate is configured, the front end of a pair of lower right side and rear flank, lower-left framework is engaged to backboard, and the inner width in the bonding part of a pair of lower right side and rear flank, lower-left framework is narrower than the width of main frame.
According to embodiments of the invention, the element that has only requirement to have high rigidity can be used to form has the main frame that is roughly square cross section, and do not require that the element that has with the same high rigidity of main frame can be used to form and has the board member that is roughly square cross section, because have the both side surface that the open side of the board member that is roughly square cross-sectional plane is engaged to the rear end part of main frame, and the distolateral both side surface of the sealing of board member is engaged to the downside rear frame.Therefore, the rigidity balance of body shell can be optimised, but also can improve output by shortening main frame.Make that thus productive costs is lowered.
According to embodiments of the invention, because the part of the board member of narrowed width is formed curved surface, if the downside rear frame is made of pipe, then board member and downside rear frame can adopt soldering or similar technology to be engaged easily and safely.And because board member is to process with the sheet material punch die, it can easily be processed into curved surface by Sheet Metal Forming Technology.
According to embodiments of the invention, a pair of right side and left side pivot plate couple backboard along the overall width direction, a pair of lower right side and lower right side rear frame are engaged to backboard, and the inner width in the bonding part of a pair of lower right side and rear flank, lower-left framework is narrower than the width of main frame.Therefore, a pair of lower right side and rear flank, the lower-left framework with spacing narrower than the width of main frame can be joined to main frame by pivot plate and backboard reliably.Therefore, the rigidity of the rear end part of main frame can be guaranteed, and also can be improved near the rigidity in the zone of pivot plate.In addition, because a pair of lower right side and rear flank, lower-left framework can be arranged freely that the design-calculated degree of freedom also can be enhanced.
Other field of application of the present invention will become apparent according to the detailed description that provides hereinafter.But, be labeled as the preferred embodiments of the present invention though should be understood that the detailed description and the instantiation that provide, only be for illustrative purposes, those skilled in the art are according to describing the variations and modifications that will understand within the spirit and scope of the present invention in detail.
Description of drawings
According to the detailed description and the accompanying drawings given below can be more complete understand the present invention, accompanying drawing only is used for explanation, is not for restriction of the present invention, wherein:
Fig. 1 has been to use the lateral plan of the motor bike of exhaust system for motorcycle of the present invention;
Fig. 2 is the plan view of the main portion of motor bike as shown in fig. 1;
Fig. 3 is the enlarged side view in order to the main portion of explaining exhaust system as shown in fig. 1;
Fig. 4 is the transparent view in order to the main portion of the installing condition of explaining exhaust system;
Fig. 5 is the part sectional view of exhaust system as shown in Figure 2;
Fig. 6 is an exhaust system left view as shown in Figure 5;
Fig. 7 is the part sectional view of silencer as shown in Figure 6;
Fig. 8 is the vertical cross-section of silencer as shown in Figure 6;
Fig. 9 (a) is the viewgraph of cross-section of silencer as shown in Figure 8 to 9 (d);
Fig. 9 (a) is the viewgraph of cross-section along arrow A-A;
Fig. 9 (b) is the viewgraph of cross-section along arrow B-B;
Fig. 9 (c) is the viewgraph of cross-section along arrow C-C;
Fig. 9 (d) is the viewgraph of cross-section along arrow D-D;
Figure 10 is the transparent view of main support;
Figure 11 is the enlarged cross-sectional view in order to the main portion of the modification example of explaining silencer;
Figure 12 is the lateral plan of motor bike that has adopted the car body frame structure of the motor bike that is used for the second embodiment of the present invention;
Figure 13 is the lateral plan of body shell as shown in Figure 12;
Figure 14 is the plan view of body shell as shown in Figure 13;
Figure 15 is the back view of body shell as shown in Figure 13;
Figure 16 is the enlarged perspective of the main portion of body shell;
Figure 17 is the view along the arrow A of Figure 13;
Figure 18 is the front elevation of storage tank as shown in Figure 12;
Figure 19 is the lateral plan of storage tank as shown in Figure 18;
Figure 20 is the plan view of storage tank as shown in Figure 18;
Figure 21 is the back view of storage tank as shown in Figure 18; With
Figure 22 is the enlarged perspective of main portion of second embodiment that is used for the body shell of motor bike of the present invention in order to explanation.
The specific embodiment
Explain the embodiment of exhaust system for motorcycle of the present invention below with reference to the accompanying drawings in detail.Accompanying drawing should be observed according to the arrow of reference character.In the explanation hereinafter, forward and backward, a right and left side and upper and lower direction be cyclist's direction of observation.The front side is labeled as Fr, and rear side is labeled as Rr, and the left side is labeled as L, and the right side is labeled as R, and upside is labeled as U, and downside is labeled as D.
As shown in Fig. 1 and Fig. 2, the motor bike 10 of present embodiment disposes body shell 11.Body shell 11 disposes the head pipe 13 that supports front fork 12 rotationally, from the beginning manages 13 main frames 14 that extend downward the rear portion, a pair of right side and left side pivot plate 15 are engaged with the rear portion of main frame 14 and extend downwards, a pair of upper right side and upper left side rear frame 16 are engaged to the rear portion of main frame 14 and extend upwardly to the rear portion, and a pair of lower right side and rear flank, lower-left framework 17 are arranged at the downside of top rear frame 16 and extend upwardly to the rear portion.Each member 5 of body shell 11 engages by soldering or similar technology.
The end portion of front fork carries out journal rest to front-wheel WF, and handlebar 18 is installed to the upper part of front fork 12.And the font lower shroud 19 that hides the top of front-wheel WF is installed to front fork 12.
The pivot tube 30 of passing a pair of right side and 15 installations of left side pivot plate along the overall width direction is fixed to described a pair of right side and left side pivot plate 15.By passing the pivot 31 that pivot tube 30 is inserted, pivot tube 30 can support the fore-end that trailing wheel WR is carried out the back vent 20 of journal rest with freely swinging.And rear shock absorber (shock) 21 is installed between the rear end of the upside rear frame 16 of body shell 11 and back vent 20.
Arranging the power unit P that constitutes by driving engine E and change-speed box M one at the downside of main frame 14, and this power unit P is by the boatswain chair 22 and pivot plate 15 supports at the middle part that is installed in main frame 14.
Be arranged in admission port 23a on the upper side wall of cylinder head (cylinder head) 23 of driving engine E and couple and be used to adjust the throttle valve body 24 that provides to the flow rate of the gas mixture of driving engine E, and the upstream extremity of throttle valve body 24 connects the airfilter 25 that is used to purify air inlet.And the exhausr port 23b that is arranged on the lower wall of cylinder head 23 couples exhaust system 60.
On the top of trailing wheel WR fuel tank 26 is installed, and is used to hold the small size article and also is arranged to front area at fuel tank 26 such as the storage tank of the helmet.And in the present embodiment, the top of fuel tank 26 and storage tank 27 are hidden by vertical row's vehicle seat 28.Vehicle seat 28 is configured to open and close to refuel in fuel tank 26 and the small size article are put into storage tank 27.
In Fig. 1, side cover 41; Shank guar plate 42; Protecgulum 43; Inner cap 44; Rear side cover 45; Back inner fender 46; Rear mudguard 47; Grab rail 48; Taillight 49; Oil pump cover 50; Brake pedal 51; Main treadle 52; Main support 53; Side stand 54; Back seat treadle load-carrying element 55; Back seat treadle 56; Be provided with chain lid 57.
As shown in Figure 2, exhaust system 60 dispose the exhausr port 23b that is connected to cylinder head 23 freeing pipe 61, be installed in the exhaust Catalyst 62 in the path of freeing pipe 61 and be connected to the silencer 63 of the end portion of freeing pipe 61.
To as shown in Fig. 6, in waste gas exhaust gas catalyzer 62, holding the catalyst 64 that forms by noble metal as Fig. 4 in order to purifying exhaust gas.And, have the installation stay (mounting stay) 65 that is roughly L shaped cross-sectional plane and be fixed to the outer surface of exhaust gas catalyzer 62.The inside face that pivot plate 15 is installed in left side that stay 65 is coupled in the overall width direction by screw thread is installed.In the present embodiment, exhaust gas catalyzer 62 is arranged to longitudinal direction roughly along the overall width direction of motor bike 10.
And as shown in Figure 5, catalyst 64 space in waste gas exhaust gas catalyzer 62 is arranged in the present embodiment, and is connected to freeing pipe 61 comparing exhaust gas catalyzer 62 farther downstreams.Catalyst 64 also can be connected to freeing pipe 61 comparing exhaust gas catalyzer 62 farther upstream sides.
As Fig. 7 to as shown in Fig. 9, silencer 63 is provided with out cylinder member 66, be arranged in the out cylinder member 66 with form double-deck inner cylinder member 67, be installed to the fore-end of out cylinder member 66 preceding cap (front elements) 68, be installed to the rear end part of out cylinder member 66 end cap 69, silencer lid 70 with the outer surface that hides out cylinder member 66 be installed, be provided at predetermined intervals in first dividing plate 71 and the second partition 72 of the inner circumferential surface of inner cylinder member 67.The inside of silencer 63 is divided into three chambers by first and second dividing plates 71,72, comprising: first expansion chamber 81 that is positioned at the front side; Be positioned at second expansion chamber 82 of rear side; And the 3rd expansion chamber 83 between first expansion chamber 81 and second expansion chamber 82.
In addition, silencer 63 is provided with freeing pipe 73, a pair of communicating pipe 74 that is communicated with first and second expansion chambers 81 and 82, a pair of communicating pipe 75 that is communicated with the second and the 3rd expansion chamber 82 and 83 that is communicated with exhaust gas catalyst 62, the tail pipe 76 that is communicated with the 3rd expansion chamber and the outside.Freeing pipe 73 is supported by the stay bearing plate 77 of the inner circumferential surface of first expansion chamber 81 that is arranged on inner cylinder member 67.
And, freeing pipe 73 have the downstream end that is connected to freeing pipe 61 first pipe 84, be connected to the downstream end of first pipe 84 and have a plurality of through hole 85a that are formed in the outer surface second pipe 85, be fixed in second pipe 85 outer surface bulged tube 86 and be connected to the downstream end of second pipe 85 and have the tail pipe 87 that is formed into a plurality of through hole 87a in the outer surface.In this freeing pipe 73, be directed flowing into the discharge gas of first pipe 84 by first pipe, 84 guiding, second pipe 85, the through hole 85a that passes second pipe 85 carries out expanding the first time in bulged tube 86, and through hole 87a and the back stomidium from tail pipe 87 enters first expansion chamber 81 thereafter.At this moment, owing to discharge gas along flowing into respect to the vertical direction of the longitudinal direction of the tail pipe 87 through hole 87a from tail pipe 87, the heat energy and the noise energy of discharging gas are lowered.
In addition, as shown in Fig. 2 and Fig. 3, in the present embodiment, silencer 63 is arranged to longitudinal direction roughly along the forward and backward directions of motor bike 10.In addition, extend to the front portion of motor bike 10 as the preceding cap 68 of the front elements of silencer 63, and in lateral plan, preceding cap 68 and exhaust gas catalyzer overlapping 62.Therefore, because exhaust gas catalyzer 62 is hidden by silencer 63 in the right side view of motor bike 10, the outward appearance of motor bike 10 can be improved.
In the present embodiment, as shown in Figure 3, silencer 63 has second stay 79 that extends forward from the peripheral part of silencer upwardly extending first stay 78 of 63 vertical approximate centre and the past cap 68.First stay 78 couples the end portion that is installed on back seat treadle load-carrying element 55 by screw thread.Second stay 79 couples the right end portion that is installed on pivot 31 by screw thread.As shown in Figure 2, the freeing pipe 61 that extends back from exhausr port 23b is bent towards the left side of vehicle, and is after this bent towards the right side of vehicle.Thereby, be arranged to right side at vehicle as the silencer 63 of heavy element.But, if silencer 63 only has first stay 78, the silencer 63 that then is arranged in the right side of vehicle can be along waving for the swing of fulcrum (yawing) direction around first stay 78, and this is because its weight is big and have the relatively length of length at its longitudinal direction.But in the present embodiment, because silencer 63 has first and second staies 78,79, silencer 63 may can be prevented from the vibration of swaying direction as explained above.In addition,, need can be reduced in order to the part count that silencer is installed because second stay 79 is directly mounted to pivot 31, thereby and productive costs also can be lowered.
And because second stay 79 forms relatively long length, it also can be in the enterprising line bend of thickness of slab direction.Therefore, when silencer 63 is set up, need can absorb by second stay 79, thereby but improve the assembleability of exhaust system 60 in order to the production tolerance of parts that silencer is installed.
And, in the present embodiment, as shown in Fig. 8 and Fig. 9, because out cylinder member 66 and inner cylinder member 67 are the cylindrical component that has the oval cross section of vertical elongation on its vertical direction with respect to longitudinal direction, so the silencer 63 of present embodiment forms the shape that has the oval cross section of vertical elongation on its vertical direction with respect to the longitudinal direction of silencer 63.
In the exhaust system 60 that constitutes as mentioned above, the discharge gas that flows out from the exhausr port 23b of driving engine E is by with freeing pipe 61 guiding exhaust gas catalyzers 62, and transformed by catalyst 64, is directed flowing into silencer 63 thereafter.The discharge gas that is directed flowing into silencer 63 is deflated in pipe 73 guiding first expansion chamber 81.Discharge gas in first expansion chamber 81 is directed flowing into second expansion chamber 82 by a pair of communicating pipe 74, and by a pair of communicating pipe 75 further being guided inflow the 3rd expansion chamber 83.In this process, discharge gas and be inflated and noise reduction, be discharged to the outside from tail pipe 76 then.
At the end portion of a pair of left and right sides pivot plate 15, main support 53 can be installed rotationally.As shown in Figure 10, main support 53 disposes the cylindrical component 91 that is coupled pivot plate 15 by pivot shaft 90 rotationally.A pair of right side and left side leg portion 92 are engaged in the following outer surface of cylindrical component 91 with the chevron shape of roughly brachymemma.Pack up locating part 93 and be installed to the last outer surface of cylindrical component 91.Locating part 94 is provided in the top that the overall width direction couples a pair of right side and left side leg portion 92.Tension member 95 is provided in the centre portion that the overall width direction couples a pair of right side and left side leg portion 92.End portion from leg portion 92 extends back tread bar (tread bar) 96 in the left side of overall width direction.Spring-support plate 97 is pivotally mounted to pivot plate 15 on the right side of overall width direction.Extension spring 98 is at the centre portion of the right side of overall width direction bridge joint spring-support plate 97 and leg portion 92.
In the present embodiment, along in the lateral plan of the lower edge of silencer 63, when main support 53 was packed up, a pair of right side of main support 53 and left side leg portion 92 almost formed the leg portion 92 of dog-leg shape.In addition, main support 53 is arranged to hide the lower surface of exhaust gas catalyzers 62 at the downside of waste gas exhaust gas catalyzer 62 to use main support 53 when main support 53 is packed up.In this example, main support 53 is not interfered with exhaust gas catalyzer 62.
In the example of the main support 53 that constitutes as described above, main support 53 can rotate 90 ° around pivot shaft 90.When support is in collapsed state (in the use), pack up locating part 93 in abutting connection with the locating dowel pin 32 that is installed in the end portion of pivot plate 15, and a pair of right side and left side leg portion 92 are arranged at the downside of waste gas exhaust gas catalyzer 62 and keeping parallelism state roughly.And, when support is in running condition, be used for locating part 94 between used life in abutting connection with the locating dowel pin 32 of pivot plate 15, make main support 53 be maintained at plumbness thus, to allow motor bike 10 supported coming to a complete stop.
According to the exhaust system 60 of the motor bike 10 of present embodiment as explained above, the silencer 63 that exhaust gas catalyzer 62 that the freeing pipe 61, longitudinal direction that it disposes the exhausr port 23b that is connected to driving engine E roughly arranged along the overall width direction of motor bike 10 and longitudinal direction are roughly arranged along the forward and backward directions of motor bike 10.Because the preceding cap 68 of silencer 63 extends to the front side of motor bike 10, and is overlaid in lateral plan on the exhaust gas catalyzer 62, exhaust gas catalyzer 62 can be hidden by silencer 63 in lateral plan.Therefore, the outward appearance of motor bike 10 can be modified.In addition, because the length of freeing pipe 61 can be minimized, the manufacturing cost of exhaust system 60 can be lowered.
And, exhaust system 60 according to the motor bike 10 of present embodiment, because silencer 63 disposes first stay 78 at the middle part that roughly is installed in longitudinal direction and is installed to second stay 79 of preceding cap 68, and first stay 78 is installed to back seat treadle load-carrying element 55, other second stay is installed to pivot 31, and then silencer 63 can be stoped by second stay 79 for the vibration of fulcrum around first stay 78 along swaying direction.And, because second stay 79 is directly mounted to pivot 31, need can be reduced in order to the part count that silencer is installed, and manufacturing cost also can be minimized.In addition,, need can absorb by second stay 79, but improve the assembleability of exhaust system 60 thus in order to the production tolerance of parts that silencer is installed because second stay 79 forms long relatively length.
In addition, the exhaust system 60 according to the motor bike 10 of present embodiment has the main support 53 that almost forms the dog-leg shape in lateral plan.When main support 53 was packed up, main support 53 was arranged to the downside at waste gas exhaust gas catalyzer 62.Therefore, exhaust gas catalyzer 62 can in use be avoided foreign object such as the bump of little grit for exhaust gas catalyzer 62.
And according to the exhaust system 60 of the motor bike 10 of present embodiment, because silencer 63 has the oval cross section of vertical elongation on respect to the vertical direction of the longitudinal direction of silencer 63, exhaust gas catalyzer 62 can be hidden by silencer 63 in lateral plan.In addition, because silencer 63 length can be shortened, can keep its big capacity, silencer 63 can form compact size simultaneously again.
As the modification example of present embodiment, as shown in Figure 11,, be roughly the entire portion that leg-of-mutton waveform element 99 can be formed into the rear end part of second pipe 86 because in embodiment as explained above, tail pipe 87 is not installed to freeing pipe 73.In this example, because from the discharge gas of the end release of waveform element 99, eddy current (shown in the arrow X) produces along different directions, erasure effect can realize by the interference to these eddy current.Therefore, the noise reduction commonality of silencer can be further improved.And, because it is only just enough at the rear end part formation waveform element 99 of second pipe 85, single member in embodiment as explained above no longer needs such as the connection of tail pipe 87, the productive costs of silencer 63 can be lowered, and the forward and backward length of silencer 63 can be shortened.In addition, in this modified embodiment, have the concave surface element 88 that is roughly the bowl-type cross-sectional plane and be formed into second pipe, 85 the relative part of rear end part with first dividing plate 71.Therefore, generation is interfered and form eddy current in concave surface element 88 in discharging gas, and erasure effect can be further improved.
Each embodiment that is used for the car body frame structure of motor bike of the present invention will be elucidated in more detail with reference to the drawing.
To explain the embodiment that is used for the car body frame structure of motor bike of the present invention referring to figs. 12 to Figure 21, the apparent direction of going into of figure is indicated with reference character and arrow.
As shown in Figure 12, the motor bike 110 of present embodiment disposes body shell 111.As at Figure 13 to as shown in Figure 15, body shell 111 disposes in order to support the head pipe 113 that front fork 112 rotates.From the beginning main frame 114 is managed 113 and is extended downward the rear portion, and wherein a pair of right side and left side pivot plate 115 are engaged to the rear portion of main frame 114 and extend downwards.A pair of upper right side and upper left side rear frame 116 are engaged to the rear portion of main frame 114 and extend upwardly to the rear portion.A pair of lower right side and rear flank, lower-left framework 117 are arranged at the downside of upside rear frame 116 and extend upwardly to the rear portion.Each member of body shell 111 adopts soldering or similar technology to engage.
Front-wheel WF carries out journal rest by the end portion of front fork 112, and handlebar 118 is installed to the upper part of front fork 112.And the front fender apron 119 that is used to hide the top of front-wheel WF is installed to front fork 112.
The back vent 120 that trailing wheel WR is carried out journal rest is supported by pivot plate 115 and freely swings, and rear shock absorber 121 is set between the rear end of the upside rear frame 116 of body shell 111 and back vent 120.
At the downside of main frame 114, power unit P is made of driving engine E and change-speed box M one.Power unit P is supported by boatswain chair 122, and pivot plate 115 is set at the centre portion of main frame 114.
The sidewall on the top of the cylinder cover 123 of driving engine E couples and is used to regulate the throttle valve body 124 that provides to the flow rate of the gas mixture of driving engine E.Throttle valve body 124 couples the airfilter 125 that is used to purify air inlet at its upstream extremity.And the sidewall of the bottom of cylinder head 123 couples freeing pipe 126, and the downstream end of freeing pipe 126 connects the silencer 127 in order to the sound level that reduces exhaust.
On the top of trailing wheel WR, fuel tank 128 disposes in order to hold the storage tank 130 of small size article such as the helmet, and it is arranged to the front area at fuel tank 128.And the top of fuel tank 128 and storage tank 130 are hidden by vertical row's vehicle seat 129 in the present embodiment.Vehicle seat 129 is configured and can opens and closes to allow to providing fuel to store the small size article to fuel tank 128 and in storage tank 130.
In Figure 12, and side cover 141 and having of configuration together: shank guar plate 142; Protecgulum 143; Inner cap 144; Rear quarter panel 145; Back inner fender 146; Rear mudguard 147; Grab rail 148; Taillight 149; Oil pump cover 150; Gear shift pedal (change pedal) 51; Main treadle 152; Main support 153; Side stand 154; Back seat treadle fixer 155; Back seat 156; With chain lid 157.
In the body shell 111 of present embodiment, as Figure 13 to as shown in Figure 17, main frame 114 forms by having the pipe component that is roughly square cross section, and a pair of right side and left side pivot plate 115 are engaged to the both side surface at rear portion of this main frame 114 to extend to downside.
In the present embodiment, the both side surface of the rearward end of main frame 114 is engaged to the open side with the board member 161 that is roughly U-shaped cross-section, and is engaged to a pair of lower right side and rear flank, lower-left framework 117 in the distolateral both side surface of the sealing of board member 161.In addition, board member 161 is narrowing down along the overall width direction near the distolateral zone of sealing in the rear side that is arranged in motor bike 110.Bent angle part broad ways on two distolateral surfaces of the sealing of board member 161 narrows down, and forms arc-shaped curved surface 161a respectively.And the radius size of curved surface 161a is substantially equal to the radius that is formed the outer surface of downside rear frame 117 by pipe.Therefore, the arc-shaped curved surface 161a of downside rear frame 117 and board member 161 is fixed and is bonded together.In addition, the upper end face with the board member 161 that is roughly U-shaped cross-section is engaged to top board 162 to close the slit that is formed by board member 161 and main frame 114.Thus, the rigidity of board member 161 can be enhanced.
In the present embodiment, the rear end surface of a pair of right side and left side pivot plate 115 is engaged to backboard 163, and to couple a pair of right side and left side pivot plate 115 along the overall width direction, described a pair of right side and left side pivot plate 115 form has the cross-sectional plane that is roughly U-shaped.And the pivot tube 164 of passing a pair of right side and 115 installations of left side pivot plate along the overall width direction is fixed to a pair of right side and left side pivot plate 115, and pivot tube 164 can support the fore-end of back vent 120 with freely swinging.
And in the present embodiment, a pair of upper right side and upper left side rear frame 116 are engaged to extend to the rear portion between the boatswain chair 122 of the both side surface at the rear portion of main frame 114 and pivot plate 115.In addition, the centre portion of a pair of upper right side and upper left side rear frame 116 and rear end part couple crossbeam 165,166 along the overall width direction.
In the present embodiment, a pair of lower right side and rear flank, lower-left framework 117 are arranged to the downside at a pair of upper right side and upper left side rear frame 116.Thereby its fore-end is engaged to the rear surface of backboard 163 and extends to its rear portion and rear end part and be engaged to the bottom of the centre portion of upside rear frame 116 at upside.In addition, as shown in Figure 17, be engaged to a pair of lower right side of backboard 163 and the inner width W2 of rear flank, lower-left framework 117 and be configured to narrower than the width W 1 of main frame 114.In addition, a pair of lower right side and rear flank, lower-left framework 117 have been strengthened its intensity by be couple to a pair of upper right side and upper left side rear frame 116 respectively via reinforced frame 167.And the outer surface of the centre portion of a pair of lower right side and rear flank, lower-left framework 117 disposes clamper installation component 168 respectively so that back seat treadle clamper 155 to be installed.
Mounting bracket 169,170 is set up in order to fixing storage tank 130 upper surface to the centre portion of the upper surface at the rear portion of main frame 114 and a pair of upper right side and upper left side rear frame 116.
As explained above, the body shell that is used for motor bike according to embodiments of the invention, because the open side with board member 161 of the cross-sectional plane that is roughly U-shaped is engaged to the both side surface of the rear end part of main frame 114, and two distolateral surfaces of the sealing of board member 161 are engaged to downside rear frame 117, the element that only requires to have high rigidity can be used in to form has the main frame 114 of the cross-sectional plane that is roughly U-shaped, and does not require that the element that has with the same high rigidity of main frame 114 can be used to form the board member 161 with the cross-sectional plane that is roughly U-shaped.Therefore, the rigidity balance of body shell 111 can be optimised, and owing to can improve output by shortening main frame 114, productive costs also can be lowered.
The body shell that is used for motor bike according to present embodiment, since board member 161 is approaching more be arranged in that the sealing of rear side of motor bike 110 is distolateral will be narrow more along the overall width direction, therefore can form the shape of optimization according to the spacing of a pair of lower right side to be joined and rear flank, lower-left framework 117.
In addition, the body shell that is used for motor bike according to present embodiment, because curved surface 161a is formed into the part of the narrowed width of board member 161, when even the rear flank framework is constituted with pipe instantly, board member 161 and downside rear frame 117 also can be engaged easily and reliably with welding process or similar technology.In addition, because board member 161 usefulness sheet material punch die moulding, it can easily be processed into curved surface by punch process or similar technology.
And, the body shell that is used for motor bike according to present embodiment, because a pair of right side and left side pivot plate 115 couple backboard 163 in the overall width direction, the front end of a pair of lower right side and rear flank, lower-left framework 117 is engaged to backboard 163, and a pair of lower right side and rear flank, lower-left framework 117 are narrower than the width W 1 of main frame 114 at the inner width W2 of bonding part, and the spacing W2 of a pair of lower right side and rear flank, lower-left framework 117 is narrower to guarantee to join to main frame 114 by pivot plate 115 and backboard 163 than the width W 1 of main frame 114.Therefore, the rigidity of the rear end part of main frame 114 can be implemented, and also can be improved near the rigidity in the zone of pivot plate 115.In addition, because a pair of lower right side and rear flank, lower-left framework 117 can be arranged freely that Design freedom can be improved.
With reference to Figure 22, will explain another embodiment that is used for the body shell of motor bike of the present invention below.Mark with identical or similar reference number with element components identical or similar elements in the above embodiments, be omitted or simplify about its description.
Figure 22 is the transparent view in order to the main portion of another embodiment that explains the body shell that is used for motor bike of the present invention.
As shown in Figure 22, the body shell 190 in the present embodiment does not dispose top board 162 and the backboard 163 in first embodiment, and the fore-end of a pair of lower right side and rear flank, lower-left framework 117 is arrived pivot tube 164 by direct connect.And, be engaged to the top that the circumferential top brace panel 191 on surface is set at pivot tube 164 of going up of the last circumferential surface of inside face, pivot tube 164 of the lower surface of main frame 114, a pair of right side and left side pivot plate 115 and a pair of lower right side and rear flank, lower-left framework 117.In addition, the lower reinforcing plate 192 that is engaged to the inside face of the following circumferential surface of pivot tube 164 and a pair of Thuban flap and left pivot plate 115 is set at the bottom of pivot tube 164.In addition, intensity can the green phase mutual coupling connects main frame 114, pivot plate 115, downside rear frame 117 and pivot tube 164 with upper reinforcing plate 191 and lower reinforcing plate 192 and be reinforced to guarantee the rigidity of body shell 190.
As explained above, the car body frame structure that is used for motor bike according to present embodiment, because the top board 162 and the backboard 163 that use in first embodiment can be removed, and the rigidity of body shell 190 can adopt top brace panel 191 and bottom brace panel 192 to be guaranteed by directly a pair of lower right side and rear flank, lower-left framework 117 being coupled pivot tube 164, the part count of using can be reduced, and productive costs can be further reduced
It is similar that other structure and operating influence and the above embodiments are explained.
By describing the present invention like this, can understand that the present invention can change with several different methods.These variations can not be considered to depart from the spirit and scope of the present invention, and these are for it will be apparent to those skilled in that clear variation should be within the scope of claim.
Claims (20)
1, a kind of exhaust system for motorcycle, it comprises:
Be connected to the freeing pipe of engine exhaust port;
Be arranged in the path of described freeing pipe to hold the exhaust gas catalyzer of the catalyst that is used to transform waste gas; With
Be connected to the silencer of the downstream end of described freeing pipe;
Wherein, described exhaust gas catalyzer is arranged to longitudinal direction almost along the overall width direction of motor bike;
Described silencer is arranged to its longitudinal direction almost along the forward and backward directions of motor bike; And
The front portion of described silencer be arranged in motor bike to extend forward and when observing from the side and exhaust gas catalyzer overlapping.
2, exhaust system for motorcycle as claimed in claim 1, wherein, described silencer has first stay that is arranged in the middle part of longitudinal direction roughly and arranges fore second stay; And
First stay is installed to back seat treadle load-carrying element, and second stay is installed to pivot can support back vent with freely swinging.
3, exhaust system for motorcycle as claimed in claim 1, wherein, main support is observed from the side and is almost formed U-shaped; And main support is arranged to the downside at exhaust gas catalyzer when packing up.
4, exhaust system for motorcycle as claimed in claim 1, wherein, silencer has the oval cross section of edge with respect to the vertical direction vertical elongation of the longitudinal direction of silencer.
5, exhaust system for motorcycle as claimed in claim 1, wherein, described silencer comprises: on the front portion of silencer along vehicle forwards to the preceding cap that extends, described before cap when observing from the side and exhaust gas catalyzer overlapping.
6, exhaust system for motorcycle as claimed in claim 2, wherein, described first stay is installed to the end portion of back seat treadle.
7, exhaust system for motorcycle as claimed in claim 2, wherein, the described second stay work of being installed to is connected in vehicle so that the pivot of trailing wheel to be installed.
8, exhaust system for motorcycle as claimed in claim 3, wherein, in the stowed position, the contiguous exhaust gas catalyzer of main support is arranged, to protect exhaust gas catalyzer between the vehicle used life.
9, exhaust system for motorcycle as claimed in claim 1, wherein, described silencer has the vertically oval cross section of vertical elongation, so that the extra height that is used at sidepiece covering exhaust gas catalyzer to be provided.
10, exhaust system for motorcycle as claimed in claim 1, wherein, described silencer comprises: be connected in exhaust gas catalyzer and be connected in first of bulged tube in far-end work in near-end work and manage; Be connected in bulged tube in near-end work and have second pipe that is used for producing the waveform profiles of eddy current at far-end at waste gas.
11, a kind of exhaust system for motorcycle comprises:
Freeing pipe with near-end and far-end, described near-end is connected to exhaust opening of engine;
Exhaust gas catalyzer with near-end and far-end, the described far-end of described freeing pipe is connected to the near-end of exhaust gas catalyzer; With
Be connected to the silencer of the far-end of freeing pipe;
Described exhaust gas catalyzer is arranged to longitudinal direction almost along the overall width direction of motor bike, and described silencer is arranged to its longitudinal direction almost along the forward and backward directions of motor bike; With
The front portion of described silencer be arranged in motor bike to extend forward and when observing from the side and exhaust gas catalyzer overlapping.
12, exhaust system for motorcycle as claimed in claim 11, wherein, described silencer has first stay that is arranged in the middle part of longitudinal direction roughly and arranges fore second stay; And
First stay is installed to back seat treadle load-carrying element, and second stay is installed to pivot can support back vent with freely swinging.
13, exhaust system for motorcycle as claimed in claim 11 wherein, almost forms U-shaped when main support is observed from the side; And main support is arranged in the downside of exhaust gas catalyzer when being packed up.
14, exhaust system for motorcycle as claimed in claim 11, wherein, described silencer has the oval cross section with respect to the vertical direction vertical elongation of the longitudinal direction of silencer.
15, exhaust system for motorcycle as claimed in claim 11, wherein, described silencer comprises: on the front portion of silencer along vehicle forwards to the preceding cap that extends, described before cap overlapping with respect to exhaust gas catalyzer when observing from the side.
16, exhaust system for motorcycle as claimed in claim 12, wherein, first stay is installed to the end portion of back seat treadle.
17, exhaust system for motorcycle as claimed in claim 12, wherein, the second stay work of being installed to is connected in vehicle so that the pivot of trailing wheel to be installed.
18, exhaust system for motorcycle as claimed in claim 13, wherein, in the stowed position, described main support is arranged by contiguous exhaust gas catalyzer, with protection exhaust gas catalyzer when vehicle uses.
19, exhaust system for motorcycle as claimed in claim 11, wherein, described silencer has the oval cross section in the vertical direction vertical elongation, to be provided for hiding at sidepiece the extra height of exhaust gas catalyzer.
20, exhaust system for motorcycle as claimed in claim 11, wherein, described silencer comprises: be connected in exhaust gas catalyzer and be connected in first of bulged tube in far-end work in near-end work and manage; Be connected to bulged tube in near-end work and have second pipe that is used for producing the waveform profiles of eddy current at far-end at waste gas.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007147202A JP2008296832A (en) | 2007-06-01 | 2007-06-01 | Vehicle body frame structure for motorcycle |
| JP147202/07 | 2007-06-01 | ||
| JP2007151621A JP4911612B2 (en) | 2007-06-07 | 2007-06-07 | Motorcycle exhaust system |
| JP151621/07 | 2007-06-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101314390A true CN101314390A (en) | 2008-12-03 |
| CN101314390B CN101314390B (en) | 2013-12-11 |
Family
ID=40105561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100987094A Expired - Fee Related CN101314390B (en) | 2007-06-01 | 2008-05-30 | Exhaust system of motorcycle |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2008296832A (en) |
| CN (1) | CN101314390B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072657A (en) * | 2011-10-25 | 2013-05-01 | 铃木株式会社 | Body frame structure of motorcycle |
| CN111183276A (en) * | 2017-09-29 | 2020-05-19 | 本田技研工业株式会社 | Exhaust gas sensor mounting structure |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5396126B2 (en) * | 2009-03-31 | 2014-01-22 | 本田技研工業株式会社 | Motorcycle |
| JP5570366B2 (en) * | 2010-09-27 | 2014-08-13 | 本田技研工業株式会社 | Motorcycle |
| JP6682410B2 (en) * | 2016-09-13 | 2020-04-15 | 本田技研工業株式会社 | Cooling water reservoir tank for saddle type vehicles |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449124C (en) * | 2004-12-28 | 2009-01-07 | 本田技研工业株式会社 | Exhaust apparatus of vehicles |
| CN100582452C (en) * | 2005-01-24 | 2010-01-20 | 本田技研工业株式会社 | Exhaust device of vehicle |
-
2007
- 2007-06-01 JP JP2007147202A patent/JP2008296832A/en active Pending
-
2008
- 2008-05-30 CN CN2008100987094A patent/CN101314390B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072657A (en) * | 2011-10-25 | 2013-05-01 | 铃木株式会社 | Body frame structure of motorcycle |
| CN103072657B (en) * | 2011-10-25 | 2015-05-27 | 铃木株式会社 | Body frame structure of motorcycle |
| CN111183276A (en) * | 2017-09-29 | 2020-05-19 | 本田技研工业株式会社 | Exhaust gas sensor mounting structure |
| CN111183276B (en) * | 2017-09-29 | 2022-07-26 | 本田技研工业株式会社 | Exhaust gas sensor mounting structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101314390B (en) | 2013-12-11 |
| JP2008296832A (en) | 2008-12-11 |
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