CN1831305A - Motorcycle exhaust system - Google Patents
Motorcycle exhaust system Download PDFInfo
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- CN1831305A CN1831305A CN 200610058526 CN200610058526A CN1831305A CN 1831305 A CN1831305 A CN 1831305A CN 200610058526 CN200610058526 CN 200610058526 CN 200610058526 A CN200610058526 A CN 200610058526A CN 1831305 A CN1831305 A CN 1831305A
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- expansion chamber
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Abstract
The invention relates to an exhaust device which can confirm needed length of exhaust tube, incline angle, and low weight of motorcycle, wherein the exhaust tube (25a) is under the engine (15); the sound absorber (26) has the first sound absorber (29) and the second sound absorber (31), while the first one is connected to the exhaust tube (25a) and between the engine (15) and the back wheel (8), and the second one (31) is connected to the first sound absorber (29) and at the side of back wheel (8); when watching at the front of motorcycle, the left and right sides of first sound absorber (29) are formed with incline parts (29a, 29a) to increase the incline angle; the second sound absorber (31) has incline part (31a), as same incline angle with the incline part (29a) of first sound absorber (29).
Description
Technical field
The present invention relates to have the venting gas appliance that is connected the outlet pipe on the motor and is connected the motorcycle of the silencing apparatus on this outlet pipe.
Background technique
In motorcycle, for the vehicle body center of gravity is set on the alap position, sometimes that weight is big silencing apparatus is configured in the downside of motor.In this case, necessary length in order to ensure exhaust pipe device, for example open in the 2002-303133 communique the Japanese documentation spy and adopt following structure: the side of the silencing apparatus of the outlet pipe that makes a part of cylinder by being disposed at the motor below also extends near the trailing wheel, be connected on the above-mentioned silencing apparatus from the rear then, the exhaust pipe device that makes remaining cylinder by above-mentioned silencing apparatus the top and be connected on the extending portion of above-mentioned exhaust pipe device.
In above-mentioned existing venting gas appliance, adopted the outlet pipe that makes above-mentioned a part of cylinder to pass through the structure of silencing apparatus side.Therefore, silencing apparatus and the outlet pipe configuration sized on the overall width direction becomes big and the tilt angle correspondingly diminishes.
In addition, owing to adopt the structure of the exhaust pipe device of above-mentioned remaining cylinder by the silencing apparatus top, thus need improve the mounting point of motor in order to ensure minimum terrain clearance altitude, thus cause the vehicle body center of gravity to improve.
Summary of the invention
The present invention finishes in view of above situation, and its purpose is to provide a kind of venting gas appliance that can guarantee the motorcycle of necessary outlet pipe length, tilt angle and low center of gravity simultaneously.
The present invention is a kind of venting gas appliance that is connected the outlet pipe on the motor and is connected the motorcycle of the silencing apparatus on this outlet pipe that has, it is characterized in that, described outlet pipe is configured to by the motor downside, described silencing apparatus has first silencing apparatus and second silencing apparatus, wherein, described first silencing apparatus is connected on the described outlet pipe and below the described motor and between the trailing wheel, described second silencing apparatus is connected on described first silencing apparatus and is positioned at the side of described trailing wheel, when from the top view vehicle, left side at described first silencing apparatus, be formed with rake on the right side, this rake is according to tilting by the high more mode in the outside of overall width direction more, and described second silencing apparatus is to extend to rear view of vehicle with the heeling condition of the roughly the same angle of rake of described first silencing apparatus.
According to venting gas appliance of the present invention, because will be connected with first silencing apparatus of outlet pipe is configured between motor below and the trailing wheel, be configured in the side of trailing wheel with being connected second silencing apparatus on this first silencing apparatus, on the left and right side of first silencing apparatus, form rake, and make second silencing apparatus form the angle state roughly the same with the rake of first silencing apparatus, therefore the vehicle body center of gravity can be set on the lower position and can guarantee the tilt angle, thereby can improve riding stability and turn performance simultaneously.In addition, owing to make the downside of outlet pipe, therefore can guarantee necessary outlet pipe length by motor.
Description of drawings
Fig. 1 is the side view of motorcycle with venting gas appliance of first embodiment of the invention;
Fig. 2 is the side view of above-mentioned venting gas appliance;
Fig. 3 is a rear view of observing venting gas appliance from rear view of vehicle;
Fig. 4 is a side view of observing venting gas appliance from vehicular sideview;
Fig. 5 is the sectional view of the outlet pipe of above-mentioned venting gas appliance;
Fig. 6 is the plan view of first silencing apparatus of above-mentioned venting gas appliance;
Fig. 7 is the side view of above-mentioned venting gas appliance;
Fig. 8 is the plan view of above-mentioned venting gas appliance;
Fig. 9 is the stereogram of above-mentioned venting gas appliance;
Figure 10 is the stereogram of above-mentioned first silencing apparatus;
Figure 11 is the side cross-sectional view of above-mentioned first silencing apparatus;
Figure 12 is the cross section plan view of above-mentioned first silencing apparatus;
Figure 13 is the side view of the venting gas appliance of second embodiment of the invention;
Figure 14 is a stereogram of observing above-mentioned venting gas appliance from oblique rear;
Figure 15 is the plan view of above-mentioned venting gas appliance;
Figure 16 is a stereogram of observing above-mentioned venting gas appliance from oblique upper;
Figure 17 is a stereogram of observing above-mentioned venting gas appliance from oblique rear;
Figure 18 is the side cross-sectional view of first silencing apparatus of above-mentioned venting gas appliance;
Figure 19 is the side cross-sectional view of second silencing apparatus of above-mentioned venting gas appliance.
Embodiment
Below, embodiments of the present invention are described with reference to the accompanying drawings.
Fig. 1 to Figure 12 is used to illustrate the venting gas appliance of the motorcycle of first embodiment of the invention.And alleged in the present embodiment all around is meant all around under the state that is sitting on the seat.
In the drawings, the 1st, motorcycle has following brief configuration.Front fork 4 turns to about quilt to pivot freely by the head pipe 3 of vehicle frame 2 front ends of aluminum alloy system and is supporting, and is separately installed with front-wheel 5 and steering handle 6 in the lower end and the upper end of this front fork 4.In addition, postbrachium 7 can be pivoted by the left and right back poppet 2b of above-mentioned vehicle frame 2 with swinging up and down and supported, and in the backend arrangement of this postbrachium 7 trailing wheel 8 is arranged.
Above-mentioned vehicle frame 2 has: from the beginning manage left and right main car frame 2a, 2a that 3 beginnings are extended to the vehicle rear lower side, begin the above-mentioned back arm support 2b that extends to vertical substantially below from the rear end of this left and right main car frame 2a, 2a, and begin to the vehicle seat cross bar 9 that the top extends that retreads from the rearward end of above-mentioned left and right main car frame 2a, 2a.
On above-mentioned left and right main car frame 2a, 2a, fuel tank 10 is installed, seat of honour position 11 and back seat 12 are installed on above-mentioned seat cross bar 9.In addition, the front side of front fork 4 is covered by front shroud 13, the downside of left and right main car frame 2a by car at the bottom of guard shield 14 cover.
Between above-mentioned postbrachium 7 and vehicle frame 2, dispose rear wheel suspension apparatus 17.This rear wheel suspension apparatus 17 has the linkage structure 17b that the upper end portion is connected the vibration damper 17a on the cross pipe (not shown) and links to each other with the underpart of this vibration damper 17a.This linkage structure 17b has the link arm 19 on the lower end 18b that the leg-of-mutton connected element 18 that is connected on the arm support 2b of back and front end be connected this connected element 18.The rearward end of this link arm 19 is connected on the postbrachium 7.In addition, the lower end (with reference to Fig. 1, Fig. 4) that on the rearward end 18a of above-mentioned connected element 18, is connecting above-mentioned vibration damper 17a.
Bottom at above-mentioned left and right back arm support 2b, 2b is fixed with the front end of the foot treadle support 20,20 of the two fork-shapeds that rearward extend. Foot treadle 21,21 is installed on the rearward end of this left and right foot treadle support 20,20.In addition, braking pedal 22 can be installed with swinging up and down, on this braking pedal 22, connect master cylinder 23 in foot treadle 21 inboards of the foot treadle support 20 in left side.
Upside at above-mentioned motor 15 disposes air inlet system, disposes venting gas appliance 25 at its downside.In order to establish the vehicle body center of gravity lower, above-mentioned motor 15 is configured in the downside of main car frame 2a lower surface here.The air-strainer (not shown) that configuration capacity is bigger in the space between consequent motor 15 and fuel tank 10.
Above-mentioned venting gas appliance 25 has and is connected the outlet pipe 25a on the above-mentioned motor 15 and is connected silencing apparatus 26 on this outlet pipe 25a.
Each relief opening (not shown) that above-mentioned outlet pipe 25a is connected above-mentioned motor 15 is gone up and by constituting with lower member: extend downwards from the front side of motor 15 back at the lower direction rear of the food tray 15b of this motor 15 four gas exhaust manifold 27a one 27d crooked and that rearward extend and make two gas exhaust manifold 27a, the 27b in left side and two gas exhaust manifold 27c, the 27d on right side to converge be one left and right a pair of collecting fitting 28a, 28b.The intermediate portion of inboard two gas exhaust manifold 27b, 27c is communicated with by connecting tube 27e.
Above-mentioned left and right collecting fitting 28a, 28b rearward extend along the bottom surface of food tray 15b.In addition, be formed with recess 15c, 15c on the bottom surface of food tray 15b, the top of above-mentioned left and right collecting fitting 28a, 28b is positioned at this recess 15c, 15c (with reference to Fig. 4, Fig. 5).Thus, can in the minimum terrain clearance altitude of guaranteeing left and right collecting fitting 28a, 28b, further motor 15 be configured on the lower position.
Above-mentioned silencing apparatus 26 has first silencing apparatus 29 that is connected on above-mentioned left and right collecting fitting 28a, the 28b and is connected second silencing apparatus 31 on this first silencing apparatus 29 by connecting tube (connecting path) 30.
Above-mentioned first silencing apparatus 29 is left and right halfbody to be engaged with each other and the parts of the approximate cuboid that forms, and it and is configured on the position of foot treadle 21 belows between the food tray 15b and trailing wheel 8 of above-mentioned motor 15.In addition, above-mentioned first silencing apparatus 29 by intersection frame 2b ' suspension strut that left and right mounting bracket 29d, the 29d that forms thereon is used as the above-mentioned back arm support 2b of a vehicle frame part.
Not with the scope of link arm 19 interferences in, make rear side half one 29 ' bloat upward from the above-mentioned connected element 18 of above-mentioned first silencing apparatus 29.Can enlarge the volume of rear side expansion chamber b described later thus.
Above-mentioned second silencing apparatus 31 is parts of near cylindrical, and it is configured in the right side of above-mentioned trailing wheel 8 obliquely upward obliquely, when when vehicular sideview is observed, comprises that the major part of relief opening 31b ' is positioned at the projection plane of trailing wheel 8.In addition, observe from vehicular sideview, second silencing apparatus 31 is configured (with reference to Fig. 1) according to the upper-end surface of relief opening 31b and the much the same high mode in upper-end surface of postbrachium 7.Above-mentioned second silencing apparatus 31 by above-mentioned foot treadle support 20 suspension struts by the assembly department 31d that forms thereon.
And, when from the vehicle top view, be formed with rake 29a, the 29a that is used to increase the tilt angle in the left and right lower edge portion of above-mentioned first silencing apparatus 29.This left and right rake 29a tilts with regard to high more mode according to the outside of leaning on the overall width direction more.In addition, the height and position of first silencing apparatus 29 is set to: the lowermost portion of bottom surface 29b and the line HL roughly consistent (with reference to Fig. 1, Fig. 4) that represents minimum terrain clearance altitude H.
Here, so-called minimum terrain clearance altitude H is meant the minimum position of the vehicle except that tire when under no load condition vehicle being stood and the interval on road surface.This minimum terrain clearance altitude H is set at following height: the limiting altitude that does not contact when current, trailing wheel is in the range state with the road surface, or for carrying vehicle by the ramp limiting altitude that the lowermost portion of vehicle does not contact with the boundary part in saddle and ramp with in its truck of packing into the time.Therefore, on the extreme lower position of the limit that first silencing apparatus 29 of present embodiment does not contact with the road surface when being configured in above-mentioned range etc., can bring the centre of gravityization of vehicle thus.
The cross section of above-mentioned second silencing apparatus 31 forms the approximate del with the left and right hypotenuse 31a of portion, 31a, and configuration in such a way: the 31a of hypotenuse portion on right side forms the heeling condition with the roughly the same angle of the rake 29a of above-mentioned first silencing apparatus 29.Like this, whole component parts of exhaust pipe device 25a, first, second silencing apparatus 29,31 and venting gas appliance described later are configured in the oblique line A at expression tilt angle.
Be divided into second expansion chamber a that is formed at the front side and the first expansion chamber b that is formed at rear side by next door 35 in above-mentioned first silencing apparatus 29.This second, first expansion chamber a, b have roughly the same volume and pass through second connecting tube 44 connection.On the internal surface of this second, first expansion chamber a, b, paste and be provided with glass wool 36,36.The temperature that the gas that can reduce exhaust sound and suppress to discharge by this glass wool 36 causes rises and boom.
On the front wall portion of above-mentioned first silencing apparatus 29, be connected with above-mentioned left and right collecting fitting 28a, 28b.This collecting fitting 28a, 28b were connected on first connecting tube 52, this first connecting tube 52 since the front wall portion 29g of first silencing apparatus 29 by the second expansion chamber a, connect next door 35 and to the first expansion chamber b inner opening.And the rearward end of first connecting tube 52 is tightly connected on above-mentioned next door 35.
On the right side wall portions 29h of the second expansion chamber a of above-mentioned first silencing apparatus 29, be formed with exhaust port 50b, be connected with the upstream port 30a of above-mentioned connecting tube 30 on this exhaust port 50b, the downstream port 30b of this connecting tube 30 is connected with the front wall portion 31g of above-mentioned second silencing apparatus 31.
In above-mentioned connecting tube 30, dispose outlet valve 37.In this outlet valve 37, valve block 37a is fixed on the valve rod 37b, wherein this valve block 37a is used to make the area of passage in this connecting tube 30 to change, this valve rod 37b connects connecting tube 30 diametrically, the center of this valve rod 37b by the above-mentioned left and right hypotenuse 31a of portion, 31a, and be configured to heeling condition according to the mode that the upper end portion is positioned at the outside.
On this valve rod 37b, be connected with driving cable 39 by pulley 38.This driving cable 39 is configured in the top and is connected (with reference to Fig. 2, Fig. 3) on the not shown drive motor along the inner side surface of back arm support 2b.And above-mentioned outlet valve 37 is controlled closing path and open path when running up when the low-speed running, when this low-speed running comprises engine start.
Above-mentioned outlet valve 37 quilt covers 40 cover, and this cover 40 is according to disposing with the continuous mode of second silencing apparatus 31.By this cover 40, first, second silencing apparatus 29,31 forms as one in appearance.
The upstream side of the joint of above-mentioned left and right collecting fitting 28a, 28b and first silencing apparatus 29 partly becomes major diameter part 28a ', the 28b ' that bloats from joint downwards.More particularly, this major diameter part 28a ', 28b ' dispose in such a way: its lateral edge portion is outstanding laterally unlike the rake 29a of above-mentioned first silencing apparatus 29, preferably is positioned at the inboard.Thus, can when being set, major diameter part 28a ', 28b ' guarantee above-mentioned tilt angle.And, in above-mentioned major diameter part 28a ', 28b ', dispose first catalyzer 43.HC when the main purpose of this first catalyzer 43 is the purifying engine starting.
In above-mentioned second connecting tube 44, dispose the second catalyzer 44a, be configured in this second connecting tube 44 on the first expansion chamber b and the boundary portion between the second expansion chamber a in above-mentioned first silencing apparatus 29.With cross section, this second catalyzer 44a is the elliptical shape of wide cut, and it has the upwardly extending major axis (with reference to Figure 12) in overall width side.Above-mentioned second connecting tube 44 connects next door 35 and is communicated with the first expansion chamber b and the second expansion chamber a, and airtight being fixed on this next door 35.
In the first expansion chamber b of above-mentioned first silencing apparatus 29, insert the detection unit 45a of aerobic sensor 45.This lambda sensor 45 is installed on the boss part 29f of the right hand edge portion that is formed at first silencing apparatus, 29 upper wall portion, and is configured according to the mode of inboard the place ahead F of the foot treadle 21 that points to the right side.Be connected the inboard of lead 45b by braking pedal 22 on this lambda sensor 45, be configured, and restraint with this drivings cable 39 and to be fixed on the above-mentioned foot treadle support 20 together along above-mentioned driving cable 39.
The gas of discharging, is purified the back by first catalyzer and flows into the first expansion chamber b by left and right collecting fitting 28a, 28b from each gas exhaust manifold 27a-27d.By the second catalyzer 44a and further purified, flow into the second expansion chamber a from this first expansion chamber b then.Then, flow into second silencing apparatus 31 by connecting tube 30, and discharge from the exhaust port 31b of this second silencing apparatus 31 from this second expansion chamber a.
In addition, owing to make each gas exhaust manifold 27a-27d and left and right collecting fitting 28a, 28b pass through the downside of the food tray 15b of motor 15, so can guarantee necessary outlet pipe length.
In the present embodiment, owing to be configured in first silencing apparatus 29 between above-mentioned food tray 15b and the trailing wheel 8 and be configured in the below of foot treadle 21, so can guarantee above-mentioned tilt angle and effectively utilize idle space ground that first silencing apparatus 29 is configured, and can increase the capacity of second, the first expansion chamber a, b.In addition, owing to make the bottom surface of first silencing apparatus 29 roughly consistent with minimum terrain clearance altitude, so can further reduce the vehicle body center of gravity.
In addition, owing to provide a part necessary muffler volume with first silencing apparatus 29, so can make 31 miniaturizations of second silencing apparatus, can dispose this second silencing apparatus 31 according to the mode that makes the major part that comprises relief opening 31b be positioned at the projection plane of trailing wheel 8, compare from the situation that trailing wheel 8 exposes with silencing apparatus, the design smoothness of trailing wheel can be made, thereby apparent variation can be obtained.In addition, second silencing apparatus 31 can be configured on the lower position, and center of gravity is reduced.
Observe from the overall width direction, roughly the same owing to make the upper end of relief opening 31b of above-mentioned second silencing apparatus 31 with the height of the upper-end surface of postbrachium 7, so can obtain perfect harmony design effect.
In the present embodiment, owing to first silencing apparatus, 29 inside are divided into the second expansion chamber a and the first expansion chamber b by next door 35, and make above-mentioned left and right collecting fitting 28a, 28b by the first connecting tube 52 perforation second expansion chamber a and to the first expansion chamber b inner opening, thereby owing to prolonged outlet pipe in fact by the part in the second expansion chamber a, thereby can guarantee the necessary length of outlet pipe 25a.Therefore, can improve the interior torque of intermediate speed region.
In the present embodiment, because left and right collecting fitting 28a, 28b are connected on the front wall portion 29g of first silencing apparatus 29, the upstream port 30a of connecting tube 30 is connected on the right side wall portions 29h of first silencing apparatus 29, downstream port 30b is connected on the front wall portion 31g of second silencing apparatus 31, therefore can obtains to dispose first, second silencing apparatus 29,31 and outlet pipe 25a well balancedly.
In the present embodiment, owing near the upstream side of first silencing apparatus 29 of left and right collecting fitting 28a, 28b, disposed first catalyzer 43, and disposed the second catalyzer 44a on the boundary portion of the first expansion chamber b of first silencing apparatus 29 and the second expansion chamber a, so purifying engine has just started the gas that discharge the back reliably.In addition, be configured, thereby in wide running region, all can purify the gas of discharge by between first, second catalyzer 43,44a, proper spacing being set.
And, be major diameter part 28a ', 28b ' owing to make the part of first catalyzer 43 of configuration exhaust collecting fitting 28a, 28b, so can suppress the increase of flow path resistance.In addition, because first catalyzer 43 is configured in the upstream side of first silencing apparatus 29, promptly near the motor 15, so the activation of catalyzer 43 can the booster engine starting time.And, because above-mentioned major diameter part 28a ', 28b ' are configured in the oblique line A of tilt angle, so the tilt angle can not narrow down.
In the present embodiment, owing in the first expansion chamber b of first silencing apparatus 29, insert the detection unit 45a that has disposed lambda sensor 45, so can detect oxygen concentration, and detect reliably and can purify all effectively and be included in NOX, the CO that discharges in the gas, near stoichiometry (the Japanese original text: air fuel ratio ス ト イ キ) of HC by the discharge gas behind first catalyzer 43.
In addition, because the mode of lambda sensor 45 according to inboard the place ahead of pointing to right side foot treadle 21 is configured, so passing through the inboard of foot treadle 21 by the lead 45b that makes lambda sensor 45 also disposes along back arm support 2b, the driving cable 38 of outlet valve 37 and the lead of brake lamp switch etc. be can dispose simultaneously, thereby special support, Cord bracket do not needed.
In the present embodiment, be used for outlet valve 37 that the area of passage is changed owing in connecting tube 30, disposed, so by controlling according to the mode of closing path when the low-speed running and when running up, opening path, can improve the output power of motor and can suppress low-speed running simultaneously the noise when travelling, when wherein said low-speed running comprises engine start.
Figure 13 to Figure 19 is used to illustrate the venting gas appliance of the motorcycle of second embodiment of the invention.In these figure, the label identical with Fig. 1 to Figure 12 represented identical or suitable part.
The basic structure of the venting gas appliance 25 of present embodiment and above-mentioned first mode of execution are roughly the same, and it comprises: be connected outlet pipe 25a on the motor 15, be connected this outlet pipe 25a and go up and be configured in motor 15 belows and be installed in as first silencing apparatus 29 on the intersection frame 2b ' of portion of the back arm support 2b of a vehicle frame part and by connecting tube 60,61 and be connected on this first silencing apparatus 29 and be configured in second silencing apparatus 31 on trailing wheel 8 right sides.
Above-mentioned first silencing apparatus 29 has: be the outer wall parts 50 of long approximate rectangular shape, the left and right a pair of exhaust entrance 50a that forms on the fore-and-aft direction on the front wall portion of these outer wall parts 50, be divided into the second expansion chamber a that is formed at the front side in above-mentioned outer wall parts 50 and be formed at the next door 35 of the first expansion chamber b of rear side and an exhaust outlet 50b who is communicated with the above-mentioned second expansion chamber a who forms on the part of the inclined to one side front side of right flank of wall member 50 outside.
Second, the first expansion chamber a, the b of above-mentioned first silencing apparatus 29 was communicated with by second connecting tube 44 that connects next door 35.In addition, the above-mentioned left and right exhaust entrance 50a and the first expansion chamber b were communicated with by left and right a pair of first connecting tube 52,52.On this left and right first connecting tube 52, be connected with above-mentioned left and right collecting fitting 28a, 28b.
Above-mentioned left and right first connecting tube 52,52 is configuration side by side on the overall width direction, and is configured in the bottom in first silencing apparatus 29.Above-mentioned second connecting tube 44 is configured in the upside of first connecting tube 52, and the cross section forms the long long hole shape of overall width direction.Above-mentioned exhaust outlet 50b preferably forms in the downstream of second connecting tube 44 of the second expansion chamber a, and is positioned at the upside of first connecting tube 52.
As shown in figure 19, above-mentioned second silencing apparatus 31 has: the outer cylinder member 55 of near cylindrical, seal the forward and backward lid 56,57 of these outer cylinder member 55 both ends opens, and the inner cylinder member 58 of inserting the punch metal plate system in the above-mentioned outer cylinder member 55 according to the mode that connects forward and backward lid 56,57.The 3rd expansion chamber c is formed by this outer cylinder member 55 and inner cylinder member 58, is filled with not shown quieter materials such as glass wool in the 3rd expansion chamber c.
On the exhaust outlet 50b on the right side wall portions 29h that is formed at above-mentioned first silencing apparatus 29, be connected with first connecting tube 60, on the front cover body 56 of second silencing apparatus 31, be connected with second connecting tube 61 that is communicated with inner cylinder member 58.This first, second connecting tube 60,61 interconnects, and the connecting path of the front wall portion of the sidewall rear portion of formation connection connection first silencing apparatus 29 and second silencing apparatus 31.In addition, on above-mentioned second connecting tube 61, dispose outlet valve 37.
The thermal shield 65 of the car external lateral portion that covers second connecting tube 61 and outlet valve 37 is installed on above-mentioned second silencing apparatus 31.The actuator of this thermal shield 65 protection outlet valves 37 avoids external impacts, and the heat that suppresses second silencing apparatus 31 reaches driver's foot.
On the uper side surface of the outer cylinder member 55 of above-mentioned second silencing apparatus 31 support 66 is installed, this support 66 is fixed on the above-mentioned foot treadle support 20 by vibration damper 67.
Above-mentioned second silencing apparatus 31 is according to being configured along the right side arm 7a of postbrachium 7 and the mode of pressing close to.On the arm 7a of this right side, be formed with the recess 7b that steps down, be used to avoid interfere with second silencing apparatus 31.Between the outer circumferential face of second silencing apparatus 31 and right side arm 7a, form predetermined gap S thus.
Between above-mentioned postbrachium 7 and vehicle frame 2, dispose above-mentioned rear suspension 17.The vibration damper 17a of this rear suspension 17 is configured in the inserting hole 7d, and this inserting hole 7d is formed on the overall width direction central part of the pivot base portion 7c of postbrachium 7.And above-mentioned rear suspension 17 is configured in the top of first silencing apparatus 29.
The below of above-mentioned first silencing apparatus 29 and left and right side by above-mentioned car at the bottom of guard shield 14 cover.On the previous section of guard shield 14 at the bottom of this car, be formed with the front openings 14b that sucks the wind-force that travels.In addition, on the bottom surface sections of guard shield at the bottom of the car 14, be formed with the exhaust port 14a that the wind-force that travels of above-mentioned suction is discharged to the outside.This exhaust port 14a has from the front and back length of the rearward end of front end to the first silencing apparatus 29 of left and right collecting fitting 28a, 28b.
Import to the outer surface that wind-force that travel in the guard shield 14 at the bottom of the car are provided to each gas exhaust manifold 27a-27d, left and right collecting fitting 28a, 28b and first silencing apparatus 29 from above-mentioned front openings 14b, after having cooled off these parts, be discharged to the outside from above-mentioned exhaust port 14a.
In the present embodiment and since with first silencing apparatus 29 be configured in motor 15 ' the below, so can make the vehicle body center of gravity be positioned at lower position, can reduce rotatory inertia, and can easily obtain the weight balancing before and after the vehicle body.
In addition, owing to distinguishing separate configurations first silencing apparatus 29 and second silencing apparatus 31 below the above-mentioned motor 15 and near the right side of trailing wheel 8, can not interfere and can guarantee the necessary capacity of first silencing apparatus 29 with trailing wheel 8.In addition, can increase and front-wheel 5 between the space, and can increase the length of outlet pipe thus, thereby can improve the engine performance when high-powered engine is installed.
In addition, owing to connect the side wall portion of first silencing apparatus 29 and the front wall portion of second silencing apparatus 31, so can first, second silencing apparatus 29,31 of separate configuration and both intervals are increased by first, second connecting tube 60,61.Thus, can avoid interfering, thereby can dispose first, second silencing apparatus 29,31 compactly with motor 15, trailing wheel 8, postbrachium 7 etc.
In the present embodiment, owing to will be configured in the downside of first silencing apparatus, 29 inside left and right first connecting tube 52,52, be configured in the upside of first connecting tube 52 second connecting tube 44, and make the cross section of this second connecting tube 44 be the long long hole shape of overall width direction, so can make the size of the overall width direction of first silencing apparatus 29 become compact, and maximization that can become can avoid shared first silencing apparatus 29 of each cylinder the time.
In the present embodiment, owing to above first silencing apparatus 29, disposed rear suspension 17, dispose rear suspension 17 so can effectively utilize the idle space of compact first silencing apparatus, 29 tops.
In the present embodiment, because the thermal shield 65 that covers the car external lateral portion of connecting tube 61 and outlet valve 37 has been installed on second silencing apparatus 31, be subjected to external force damage so can prevent the actuator of outlet valve 37, and the heat that can suppress second silencing apparatus 31 reaches driver's foot.
In the present embodiment, interfere with second silencing apparatus 31 avoiding owing on postbrachium 7, formed the recess 7b that steps down, thus can make second silencing apparatus 31 correspondingly inboard near disposing to car, thus can further reduce the body dimensions of overall width direction.
In the present embodiment, owing to be formed with the exhaust port 14a that discharges the wind-force that travels to the outside on the guard shield 14 at the bottom of the car below covering first silencing apparatus 29, so can improve the exhaust efficiency that is directed to the wind-force that travels in the guard shield 14 at the bottom of the car, and can further improve the cooling effectiveness of outlet pipe 25a, first silencing apparatus 29.
Claims (23)
1. the venting gas appliance of a motorcycle has outlet pipe that is connected on the motor and the silencing apparatus that is connected on the described outlet pipe, it is characterized in that,
Described outlet pipe is configured to pass through from the downside of motor,
Described silencing apparatus has first silencing apparatus and second silencing apparatus, wherein said first silencing apparatus is connected on the described outlet pipe and below the described motor and between the trailing wheel, described second silencing apparatus is connected on described first silencing apparatus and is positioned at the side of described trailing wheel
During from the vehicle top view, on the left and right side of described first silencing apparatus, be formed with rake, described rake is according to tilting by the high more mode in the outside of overall width direction more, and described second silencing apparatus is to extend to rear view of vehicle with the heeling condition of the roughly the same angle of rake of described first silencing apparatus.
2. the venting gas appliance of motorcycle as claimed in claim 1 is characterized in that, when vehicular sideview was observed, described first silencing apparatus was configured between the food tray and trailing wheel of described motor.
3. the venting gas appliance of motorcycle as claimed in claim 1 or 2 is characterized in that, when vehicular sideview was observed, the bottom surface of described first silencing apparatus was roughly consistent with the minimum terrain clearance altitude of vehicle.
4. the venting gas appliance of motorcycle as claimed in claim 1, it is characterized in that, when when vehicular sideview is observed, described second silencing apparatus is according to extending to the back upper place by the high more mode of rear side more, and disposes according to the mode that relief opening at least partly is positioned at the projection plane of trailing wheel on the overall width direction.
5. the venting gas appliance of motorcycle as claimed in claim 4 is characterized in that, when vehicular sideview is observed, and the much the same height in upper-end surface of the upper-end surface of the relief opening of described second silencing apparatus and the postbrachium that supports described trailing wheel.
6. the venting gas appliance of motorcycle as claimed in claim 1, it is characterized in that, second expansion chamber and rear side expansion chamber that described first silencing apparatus is divided into first expansion chamber that is formed on rear side and is formed on the front side, described outlet pipe connects described second expansion chamber and to the first expansion chamber inner opening, this first expansion chamber and described second expansion chamber were communicated with by connecting tube.
7. the venting gas appliance of motorcycle as claimed in claim 6, it is characterized in that, be connected with the upstream port of the connecting path that is communicated with described second expansion chamber on the side wall portion of described first silencing apparatus, the downstream port of described connecting path is connected with the front wall portion of described second silencing apparatus.
8. as the venting gas appliance of claim 6 or 7 described motorcycles, it is characterized in that, dispose first catalyzer near the upstream side of described first silencing apparatus in described outlet pipe, in the described connecting tube that is communicated with described first expansion chamber and second expansion chamber, dispose second catalyzer.
9. the venting gas appliance of motorcycle as claimed in claim 8 is characterized in that, during from the vehicle top view, the part that disposes described first catalyzer of described outlet pipe is positioned at the inboard at tilt angle.
10. as the venting gas appliance of claim 6 or 7 described motorcycles, it is characterized in that, in first expansion chamber of described first silencing apparatus, insert the detection unit of aerobic sensor.
11. the venting gas appliance of motorcycle as claimed in claim 10 is characterized in that, described lambda sensor disposes according to the mode in inboard the place ahead of pointing to foot treadle.
12. the venting gas appliance of motorcycle as claimed in claim 1, it is characterized in that, described first silencing apparatus is configured in the below of motor and is installed on the vehicle frame, described second silencing apparatus is configured in the side of trailing wheel, and the part of second silencing apparatus, one side of this first silencing apparatus side wall portion and the front wall portion of second silencing apparatus are connected by connecting path and are connected.
13. the venting gas appliance of motorcycle as claimed in claim 1, it is characterized in that, described first silencing apparatus has: first expansion chamber that forms at rear side, form and be connected second expansion chamber on the described exhaust pipe device in the front side, be communicated with described outlet pipe and first connecting tube of described first expansion chamber and second connecting tube that is communicated with described first expansion chamber and second expansion chamber in described second expansion chamber, described second silencing apparatus has the 3rd expansion chamber that is connected on described second expansion chamber.
14. the venting gas appliance of motorcycle as claimed in claim 13 is characterized in that, described first connecting tube is configured in the bottom of described first silencing apparatus, and described second connecting tube is configured in the top of described first silencing apparatus.
15. the venting gas appliance of motorcycle as claimed in claim 14 is characterized in that, the sectional shape of described second connecting tube is the long long hole shape of overall width direction.
16. the venting gas appliance of motorcycle as claimed in claim 1, it is characterized in that, at least two collecting fittings that described outlet pipe has a plurality of gas exhaust manifolds and makes each gas exhaust manifold interflow, described each collecting fitting are connected on described first silencing apparatus and configuration side by side on the overall width direction.
17. the venting gas appliance of motorcycle as claimed in claim 1 is characterized in that, disposes catalyzer in the part near upstream side from the attachment portion of described outlet pipe and described first silencing apparatus of described outlet pipe.
18. the venting gas appliance of motorcycle as claimed in claim 1 is characterized in that, disposes rear suspension above described first silencing apparatus, described rear suspension will support between the postbrachium of trailing wheel and the vehicle frame and couple together.
19. the venting gas appliance of motorcycle as claimed in claim 1, it is characterized in that, described second silencing apparatus is formed with the recess of stepping down along the postbrachium configuration of supporting trailing wheel on described postbrachium, have predetermined interval between the periphery of described step down recess and described second silencing apparatus.
20. the venting gas appliance of motorcycle as claimed in claim 1 is characterized in that, the below of described first silencing apparatus by car at the bottom of guard shield cover, on guard shield at the bottom of the described car, be formed with front openings that sucks the wind-force that travels and the exhaust port of discharging the wind-force that travels.
21. the venting gas appliance of motorcycle as claimed in claim 1 is characterized in that, has the connecting path that connects described first silencing apparatus and second silencing apparatus, disposes the outlet valve that the area of passage is changed in described connecting path.
22. the venting gas appliance of motorcycle as claimed in claim 1 is characterized in that, has the connecting path that connects described first silencing apparatus and second silencing apparatus, disposes the thermal shield in the car outside that covers described connecting path at least on described second silencing apparatus.
23. the venting gas appliance of motorcycle as claimed in claim 22 is characterized in that, disposes the outlet valve that the area of passage is changed in described connecting path, described thermal shield covers described connecting path and covers outlet valve simultaneously.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005069761 | 2005-03-11 | ||
| JP2005069761 | 2005-03-11 | ||
| JP2005161445 | 2005-06-01 | ||
| JP2005316085 | 2005-10-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1831305A true CN1831305A (en) | 2006-09-13 |
| CN100523444C CN100523444C (en) | 2009-08-05 |
Family
ID=36993778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100585260A Active CN100523444C (en) | 2005-03-11 | 2006-03-10 | Motorcycle exhaust system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100523444C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632496A (en) * | 2011-02-08 | 2012-08-15 | 雅马哈发动机株式会社 | Robot |
| CN101544183B (en) * | 2008-03-28 | 2013-04-17 | 雅马哈发动机株式会社 | Muffler fixing bracket and straddle type vehicle including the same |
| CN104675486A (en) * | 2013-11-30 | 2015-06-03 | 王玉森 | Warm air curtain formed by recycling engine exhaust heat and manufacture method |
| CN106762241A (en) * | 2017-01-09 | 2017-05-31 | 浙江吉利控股集团有限公司 | A kind of engine exhaust-gas recirculating system |
| CN107429597A (en) * | 2015-03-24 | 2017-12-01 | 本田技研工业株式会社 | The exhaust apparatus of Straddle-type vehicle |
| CN110925069A (en) * | 2018-08-29 | 2020-03-27 | 铃木株式会社 | Motorcycle with a motorcycle body |
-
2006
- 2006-03-10 CN CNB2006100585260A patent/CN100523444C/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101544183B (en) * | 2008-03-28 | 2013-04-17 | 雅马哈发动机株式会社 | Muffler fixing bracket and straddle type vehicle including the same |
| CN102632496A (en) * | 2011-02-08 | 2012-08-15 | 雅马哈发动机株式会社 | Robot |
| CN104675486A (en) * | 2013-11-30 | 2015-06-03 | 王玉森 | Warm air curtain formed by recycling engine exhaust heat and manufacture method |
| CN107429597A (en) * | 2015-03-24 | 2017-12-01 | 本田技研工业株式会社 | The exhaust apparatus of Straddle-type vehicle |
| CN107429597B (en) * | 2015-03-24 | 2019-07-12 | 本田技研工业株式会社 | Two-wheeled exhaust apparatus |
| CN106762241A (en) * | 2017-01-09 | 2017-05-31 | 浙江吉利控股集团有限公司 | A kind of engine exhaust-gas recirculating system |
| CN110925069A (en) * | 2018-08-29 | 2020-03-27 | 铃木株式会社 | Motorcycle with a motorcycle body |
| CN110925069B (en) * | 2018-08-29 | 2022-05-31 | 铃木株式会社 | Motorcycle with a motorcycle body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100523444C (en) | 2009-08-05 |
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