CN100532798C - Saddle-ride type vehicle with exhaust gas purification function - Google Patents
Saddle-ride type vehicle with exhaust gas purification function Download PDFInfo
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- CN100532798C CN100532798C CNB2006101106314A CN200610110631A CN100532798C CN 100532798 C CN100532798 C CN 100532798C CN B2006101106314 A CNB2006101106314 A CN B2006101106314A CN 200610110631 A CN200610110631 A CN 200610110631A CN 100532798 C CN100532798 C CN 100532798C
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- accommodating part
- vehicle
- catalyst accommodating
- upstream catalyst
- straddle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/04—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for motorcycles
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- 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
The invention provides a vehicle capable of storing a plurality of catalysts in an exhaust pipe to improve a purifying function of exhaust gas while maintaining layout of the vehicle in a satisfactory condition. This saddle riding type vehicle having the exhaust emission control function is provided with an engine (30) fixed to a vehicle body frame (10), the exhaust pipe (50) bent after being extended on a front side from the engine (30) and extended toward a rear part in the direction of advance of the vehicle, and catalyst on the upstream side and catalyst on the downstream side in the exhaust pipe (50). A catalyst storage part (51) on the upstream side for storing the catalyst on the upstream side in the exhaust pipe (50) and a catalyst storage part (52) on the downstream side for storing the catalyst on the downstream side are arranged by being separated from each other. At least a part of the engine (30) is arranged between the catalyst storage part (51) on the upstream side and the catalyst storage part (52) on the downstream side.
Description
Technical field
The present invention relates to a kind of have make the blast air of when internal combustion engine drive, discharging cross the Straddle-type vehicle of catalyzer with the function of purifying exhaust gas, more specifically, relate to the vehicle that a kind of wherein outlet pipe is arranged in motor side or below.
Background technique
In some Straddle-type vehicle such as motorcycle etc., thereby engine suspension or be installed in is fixed on the vehicle body frame on this vehicle body frame.In this class vehicle, the very heavy motor of weight generally is arranged in car body central authorities so that the center of gravity of car body is positioned near its central authorities, thereby improves the operability and the stability of vehicle.Therefore, in motor was fixed on vehicle on the vehicle body frame in this way, motor was positioned at the occupant's who rides in car body central authorities below.In addition, the outlet pipe that is connected with motor generally extends forward in the front portion of motor, and is crooked then to extend to the car body rear by motor below or side.
On the other hand, in some Straddle-type vehicle, accommodate catalyzer in the outlet pipe, this catalyzer is used to reduce HC emissions, NO
X, CO amount with purifying exhaust gas, exhaust is discharged from (for example referring to patent documentation 1) then.In this class vehicle, for improving exhaust emission control function, preferably will the catalyst arrangement that has certain distance on the flow direction of exhaust gases in outlet pipe on a plurality of positions to improve the chance of exhaust contact catalyst in flow process, and preferably with catalyst arrangement in exhaust-gas upstream side, make that temperature flows through catalyzer before descending in the flow process of exhaust in outlet pipe.
(patent documentation 1) JP-A-10-169435
Summary of the invention
But, in above-mentioned motor is fixed on Straddle-type vehicle on the vehicle body frame, a plurality of catalyzer are contained in layout in the outlet pipe that is arranged in motor side or below for vehicle, improve the exhaust emission control function existing problems.
In other words, the flow resistance when crossing catalyzer in order to reduce blast air, the internal diameter of part that requires to hold in the outlet pipe catalyzer is bigger than the internal diameter of other parts in the outlet pipe.But, when outlet pipe is arranged in motor below and catalyzer when being contained in this part, increasing correspondingly with internal diameter, clearance reduces.In addition, when outlet pipe is arranged in motor side and catalyzer when being contained in this part, can worry that the vehicle width around the motor increases, thereby make the occupant's who rides in the motor top the posture of taking produce inconvenience.
In addition, can expect be arranged in the outlet pipe all a plurality of catalyst arrangement away from the position of internal-combustion engine as being arranged in the zone of vehicle rear, but the lowered blast air of temperature is crossed catalyzer in by the flow process of outlet pipe in the case, causes exhaust emission control function to descend.
The present invention proposes in view of the above problems, its purpose is to provide a kind of like this Straddle-type vehicle, wherein motor is fixed on the vehicle body frame, and holds a plurality of catalyzer in the favourable layout that keeps vehicle in outlet pipe, to improve exhaust emission control function.
For addressing the above problem, the invention provides a kind of Straddle-type vehicle with exhaust emission control function, this Straddle-type vehicle comprises: be fixed on the motor on the vehicle body frame; Be connected to described waste pipe, described outlet pipe extends crooked then and extends back on vehicle heading to described motor the place ahead; And be arranged in a plurality of catalyzer in the described outlet pipe, wherein, described outlet pipe comprises upstream catalyst accommodating part that accommodates at least one catalyzer in described a plurality of catalyzer and the downstream catalyst accommodating part that accommodates all the other catalyzer in described a plurality of catalyzer, described downstream catalyst accommodating part is arranged in away from described upstream catalyst accommodating part and in the position in downstream, described upstream catalyst accommodating part, and at least a portion of described motor is arranged between described upstream catalyst accommodating part and the described downstream catalyst accommodating part.This Straddle-type vehicle also is provided with the secondary air supplying pipe of the exhaust feeding secondary air in described outlet pipe, and described secondary air supplying pipe is arranged in the top of the bottom side of described motor, and is connected with the part in vehicle heading the place ahead of the crankcase that is arranged in described motor of described outlet pipe.According to this embodiment, because to the exhaust feeding secondary air, so can further improve exhaust emission control function.In addition, although arranged the secondary air supplying pipe, can keep the favourable layout of vehicle and can not reduce the clearance of vehicle.
Here, the part of motor comprises the side of crankcase, cylinder block and head and this crankcase, the cylinder block and head of motor, projection up and down.This crankcase comprises crankcase that holds gear and the crankcase that only holds bent axle.In addition, the part of motor not only on the straightway that is connected between upstream catalyst accommodating part and the downstream catalyst accommodating part, and can be for example when in the vehicle side view, seeing between upstream catalyst accommodating part and downstream catalyst accommodating part.
According to the present invention, outlet pipe holds a plurality of catalyzer, therefore can improve exhaust emission control function.In addition, even remain unchanged for the cross sectional area that blast air is crossed upstream catalyst accommodating part and downstream catalyst accommodating part formed internal diameter than the big situation of the remaining part of outlet pipe under, also at least a portion with motor is arranged between upstream catalyst accommodating part and the downstream catalyst accommodating part, therefore can suppress that vehicle width increases, clearance reduces and with the interference of other device, thereby can realize the favourable layout of vehicle.
In addition, according to one embodiment of present invention, described outlet pipe is connected with described motor, and extends to the place ahead of described motor, and is crooked then and extend back on vehicle heading below described motor; Described upstream catalyst accommodating part is arranged in lowest positions the place ahead on vehicle heading of described motor; Described downstream catalyst accommodating part is arranged in the rear of described lowest positions on vehicle heading of described motor.Here, the lowest positions of motor is corresponding to the downward projection on the crankcase bottom side that for example is positioned on the motor bottom.According to this embodiment, can in outlet pipe, arrange a plurality of catalyzer and can not reduce the clearance of vehicle.
In addition, according to one embodiment of present invention, described upstream catalyst accommodating part is arranged in crankcase the place ahead on vehicle heading of described motor, and described downstream catalyst accommodating part is arranged in the rear of described crankcase on vehicle heading of described motor.According to this embodiment, can in outlet pipe, arrange a plurality of catalyzer and can not reduce the clearance of vehicle.
In addition, according to this embodiment, described outlet pipe can be connected with described motor, and extends to the place ahead of described motor, and is crooked then and extend back on vehicle heading below the described crankcase of described motor.According to this embodiment, can the arranging exhaust air pipe and can not strengthen vehicle width.
In addition, according to this embodiment, described secondary air supplying pipe can be connected with the downstream side of described upstream catalyst in the described upstream catalyst accommodating part.According to this embodiment,, can keep the favourable layout of vehicle and can not reduce the clearance of vehicle although be furnished with the secondary air supplying pipe.
In addition, according to one embodiment of present invention, the cylinder block of described motor is arranged to the attitude that its top turns forward on vehicle heading.According to this embodiment, can guarantee occupant's the stability of taking posture by the height that reduces the motor top.In addition, by outlet pipe being arranged in the cylinder block below, can avoid the interference of outlet pipe and other device.
In addition, according to this embodiment, described motor can comprise 4 two-stroke engines.According to this embodiment, outlet pipe is connected with the relief opening that is installed to motor top.Therefore, if outlet pipe is arranged in motor below, the part in the outlet pipe that then can extend below from outlet pipe and motor joint to motor, thus can guarantee that enough spatial arrangement upstream catalyst accommodating parts are arranged.
In addition, according to this embodiment, described upstream catalyst accommodating part can be arranged in the rear on vehicle heading foremost of described motor.According to this embodiment, can suppress upstream catalyst accommodating part outstanding to vehicle front, thereby can improve the durability of upstream catalyst accommodating part.
In addition, according to this embodiment, described upstream catalyst accommodating part can be in the attitude that is elongated shape on the flow direction of exhaust gases and is arranged to turn forward on vehicle heading.According to this embodiment, can suppress upstream catalyst accommodating part outstanding to vehicle front, thereby can improve the durability of upstream catalyst accommodating part.
In addition, according to one embodiment of present invention, described upstream catalyst accommodating part comprises tympanic part with at the described catalyzer of this upstream catalyst accommodating part internal support, and the Center Gap that described tympanic part is arranged on its center line and the vehicle-width direction is opened.According to this embodiment, contact such as the water on the road surface that spills backward by front-wheel in can preventing to travel, dust upstream catalyst accommodating part, thus suppress the durability that the upstream catalyst temperature descends and improves the upstream catalyst accommodating part.
In addition, according to this embodiment, the whole tympanic part of described upstream catalyst accommodating part can be arranged on the position of lateral shift at the center on the vehicle-width direction.According to this embodiment, contact such as the water on the road surface that spills backward by front-wheel in can preventing to travel, dust upstream catalyst accommodating part, thus suppress the durability that the upstream catalyst temperature descends and improves the upstream catalyst accommodating part.
In addition, according to one embodiment of present invention, the whole tympanic part of described upstream catalyst accommodating part is arranged in the inboard of at least a portion on vehicle-width direction of the side of described motor.Here, this side of motor comprises the crankcase and the exterior edge face of cylinder block on vehicle-width direction of motor.According to this embodiment, because motor is positioned at the rear of upstream catalyst accommodating part, thus near wind the flowing upstream catalyst accommodating part of having suppressed to travel, thus the temperature that can suppress upstream catalyst descends.
In addition, according to one embodiment of present invention, be provided with the lid that covers Vehicular body front, at least a portion of described lid is arranged in the place ahead on vehicle heading, described upstream catalyst accommodating part.According to this embodiment, because contact upstream catalyst accommodating parts such as the water on the road surface that this lid prevents to be spilt backward by front-wheel, dust, so can suppress the temperature decline of upstream catalyst and improve the durability of upstream catalyst accommodating part.
In addition, according to one embodiment of present invention, the whole tympanic part of described upstream catalyst accommodating part is arranged in the horizontal plane below that comprises the front-wheel axletree.According to this embodiment, front-wheel that has swung up and down in having avoided travelling and the interference between the upstream catalyst accommodating part, thus can improve the durability of upstream catalyst accommodating part.
In addition, according to one embodiment of present invention, described outlet pipe is to extending with the place ahead of the joint of described motor, crooked then and on vehicle heading, arrange backward in the side of the cylinder block of described motor, and described upstream catalyst accommodating part is arranged in described cylinder block the place ahead on vehicle heading of described motor.According to this embodiment, even in order to make cross sectional area that blast air crosses be arranged on all exhaust sections in this vehicle on the motor side all identical and under making that the internal diameter of upstream catalyst accommodating part is than the big situation of the remaining part of outlet pipe, also can suppress the stability of taking posture that vehicle width increases and can guarantee the occupant at outlet pipe.
In addition, according to one embodiment of present invention, described outlet pipe is to extending with the place ahead of the joint of described motor, crooked then and on vehicle heading, arrange backward in the side of the cylinder block of described motor, the crankcase of described motor comprises the rear portion that is positioned at the rear of described cylinder block on vehicle heading, and the described downstream catalyst accommodating part cylinder block that is arranged in described motor is above the described rear portion of rear on the vehicle heading and described crankcase.According to this embodiment, even in order to make cross sectional area that blast air crosses be arranged on all exhaust sections in this vehicle on the motor side all identical and under making that the internal diameter of upstream catalyst accommodating part is than the big situation of the remaining part of outlet pipe, also can suppress the stability of taking posture that vehicle width increases and can guarantee the occupant at outlet pipe.
Description of drawings
Fig. 1 is the side view that motorcycle according to an embodiment of the invention is shown;
Fig. 2 is the front view that this motorcycle is shown;
Fig. 3 illustrates the outlet pipe that is installed on this motorcycle and the perspective view of silencing apparatus;
Fig. 4 is the side view that motorcycle according to another embodiment of the present invention is shown.
Embodiment
Embodiments of the invention are described below with reference to accompanying drawings.
Fig. 1 and Fig. 2 are the views that the Straddle-type vehicle that has exhaust emission control function according to an embodiment of the invention is shown.Fig. 1 illustrates the side view of conduct according to the outward appearance of the motorcycle 1 of a kind of structure of Straddle-type vehicle of the present invention, and Fig. 2 is the front view that motorcycle 1 is shown.Fig. 3 illustrates the perspective view that is installed on the motorcycle 1 with the outlet pipe 50 of purifying exhaust gas.
In Fig. 1 and Fig. 2, the vehicle body frame 10 of motorcycle 1 comprises main frame 11.Main frame 11 from forwards the extending down to (direction the figure shown in the Fr) is oblique of car body, and is provided with head pipe 27 at its front end place in the car body first half.Head pipe 27 has the front fork 5 of suspension with rotating mode journal rest (journal).Front fork 5 is installed to the steering handle 9 that extends in the top on vehicle-width direction, steering handle 9 is equipped with handle 7 at its two ends, left and right sides.Front fork 5 is at its lower end journal rest front-wheel 23.In motion, the vibration that produces in travelling with buffering with front-wheel 23 is flexible of front fork 5.In addition, front mudguard 22 is bearing on the front fork 5 to cover front-wheel 23 from the top.
In addition, vehicle body frame 10 comprises a rail 12, and this rail 12 is connected with the middle part 11a of main frame 11 and extends backward and obliquely on vehicle heading from this middle part 11a.Vehicle seat 13 is provided with present rail 12 tops.In addition, vehicle body frame 10 comprises rear pole 14, and rear pole 14 is connected with the rear end of main frame 11 and extends backward and obliquely on vehicle heading from this rear end.The rear end of rear pole 14 is connected with seat rail 12.
The back arm support 17 that hangs is connected with the rear end of main frame 11 downwards.Motor 30 is arranged in the rear lower side of main frame 11, and this motor 30 is positioned at motorcycle 1 near the centre on the vehicle heading.Motor 30 is suspended on middle part 11b, the 11c of main frame 11, and is fixed on the vehicle body frame 10 by 17 supportings of back arm support.Under the occupant rides in situation on the motorcycle 1, be sitting in vehicle seat 13 and be located substantially on motor 30 tops along the occupant on the front portion of vehicle heading.
Be furnished with radiator 24 in the front lower place of main frame 11.The cooling water that radiator 24 is connected with the cooling water passage of motor 30 to allow cooled engine 30 flows therein, thereby utilizes the air cooling cooling water that travels.Radiator 24 is communicated with (see figure 2) by water supply and sewage pipe 24b with container 24a.Under the situation that cooling water inflow in the cooling water passage of radiator 24 and motor 30 increases or reduces owing to temperature change, radiator 24 temporarily is stored in cooling water among this container 24a or from this container 24a and takes out cooling water.
One end of postbrachium 19 is installed on the arm support 17 of back at pivot 4 places.Postbrachium 19 is at its other end place journal rest trailing wheel 21, and postbrachium 19 can swing up and down around the pivot 4 relative vehicle body frames 10 that are arranged on the arm support 17 of back together with trailing wheel 21.One end of rear suspension 18 is installed on the middle part of postbrachium 19.The other end of rear suspension 18 is installed on the present rail 12, and rear suspension 18 impact that swing is in motion stretched and when travelling with buffering the occupant caused according to postbrachium 19.
Vehicle body frame 10 is covered by car body lid 6 and leg guard 8.Leg guard 8 is installed to the anterior of car body lid 6 and roughly rectangular (see figure 2) to open front and in front view.In addition, the shape of leg guard 8 is shunk gradually to the inside along with extending forward.In addition, Fig. 2 illustrates crestal line 8b, the 8c of leg guard 8.
The relief opening that forms on outlet pipe 50 and the cylinder head 33 is connected.Outlet pipe 50 on vehicle heading from relief opening forward and obliquely extend down, crooked then and on vehicle heading backward and obliquely extend down.In addition, outlet pipe is by further crooked and extend back on vehicle heading below crankcase 31.
The part of outlet pipe 50 at crankcase 31 rears is contained in the silencing apparatus 40 that is arranged in trailing wheel 21 sides.As shown in Figure 3, the inside of silencing apparatus 40 is separated into expansion chamber 43, triple-expansion chamber 45 and second expansion chamber 44 one time from front to back successively by first next door 41 and second next door 42.The downstream-end opening to one of outlet pipe 50 time expansion chamber 43 enters in expansion chamber 43 to allow exhaust.Pipe arrangement 46 provide between expansion chamber 43 and the second expansion chamber 44 and second expansion chamber 44 and triple-expansion chamber 45 between be communicated with.In addition, be furnished with tail pipe 47 in triple-expansion chamber 45, this tail pipe 47 extends through second next door 42, and it is open-ended to silencing apparatus 40 outsides.
As shown in Figure 3, be provided with upstream catalyst accommodating part 51 and the downstream catalyst accommodating part 52 that is arranged in 51 downstreams, upstream catalyst accommodating part in the outlet pipe 50.Upstream catalyst accommodating part 51 comprises the upstream catalyst 51a that mainly carries out reduction.Downstream catalyst accommodating part 52 comprises the downstream catalyst 52a that mainly carries out oxidation.Upstream catalyst 51a and downstream catalyst 52a are made by honeycomb metal, and the side of this honeycomb metal is centered on by cylindric outer wall parts.For reducing the flow resistance of exhaust in catalyzer, the diameter of outer wall parts forms the remaining part greater than outlet pipe 50 respectively.
Upstream catalyst accommodating part 51 comprises and forms the diameter tubular tympanic part 51f bigger than the remaining part of outlet pipe 50.The inner peripheral surface of tympanic part 51f contacts with the outer circumferential face of the outer wall parts of upstream catalyst 51a to keep upstream catalyst 51a.The upstream extremity of tympanic part 51f is connected with the upstream tapered portion 51c that diameter increases gradually along with extending downstream; The downstream of tympanic part 51f is connected with the 51d of downstream tapered portion that diameter reduces gradually along with extending downstream.The downstream side of the 51d of downstream tapered portion is connected with the tubulose downstream tube 51e of portion.The downstream of the 51e of downstream tube portion is connected with tubular bulb portion 53.
Downstream catalyst accommodating part 52 comprises upstream tapered portion 52c that diameter increases gradually along with extending downstream and the 52d of downstream tapered portion that diameter reduces gradually along with extending downstream.The downstream of upstream tapered portion 52c engages with maintenance downstream catalyst 52a with the upstream extremity of the outer wall parts that center on downstream catalyst 52a, and the upstream extremity of the 52d of downstream tapered portion engages to keep downstream catalyst 52a with the downstream of the outer wall parts that center on downstream catalyst 52a.
As shown in Figure 1, upstream catalyst accommodating part 51 is arranged in crankcase 31 the place aheads and cylinder block 32 belows, makes whole upstream catalyst accommodating part 51 be positioned at the rear of the vertical plane of the 33a foremost that comprises cylinder head 33.In addition, the tympanic part 51f and the cylinder block 32 of upstream catalyst accommodating part 51 separate, the parallel to an axis earth tilt of cylinder in the axial and cylinder block 32 of this tympanic part 51f, and this tympanic part 51f is arranged in the below of the horizontal plane of the axletree 23a that comprises front-wheel 23.Therefore, upstream catalyst 51a can be arranged to not to interfere with other device and the front-wheel 23 that swings up and down.In addition, because upstream catalyst 51a is arranged in the upstream of exhaust flow path, so high-temperature exhaust air flows through upstream catalyst 51a, thereby the exhaust emission control function of upstream catalyst 51a improves.
In addition, as shown in Figure 2, the whole tympanic part 51f of upstream catalyst accommodating part 51 is positioned at the side of side end face 31a central authorities on inboard on the vehicle-width direction and vehicle-width direction of crankcase 31.The bottom of leg guard 8 is positioned at the place ahead of upstream catalyst accommodating part 51.Therefore, the water in the time of can preventing to travel on the road surface, dust etc. splash on the upstream catalyst accommodating part 51, thereby the activation temperature that can keep upstream catalyst is to improve its durability.
Downstream catalyst accommodating part 52 separates with upstream catalyst accommodating part 51, and crankcase 31 is between these two catalyzer accommodating parts.That is, downstream catalyst accommodating part 52 is connected with upstream catalyst accommodating part 51 by pipe portion 53.Pipe portion 53 is positioned at crankcase 31 belows and arranges as the bottom side of the crankcase 31 of the lower end surface of motor 30 with the edge.
The diameter of pipe portion 53 is than upstream catalyst 51a and downstream catalyst 52a is little and pipe portion 53 arranges along the bottom side of crankcase 31, keeps the clearance of vehicle thus.Downstream catalyst accommodating part 52 is contained in the silencing apparatus 40 of the side that is arranged in trailing wheel 21, thereby keeps the activation temperature of upstream catalyst 52a easily.
Secondary air supplying pipe 60 to the exhaust supplying secondary air is connected with outlet pipe 50.The downstream side of secondary air supplying pipe 60 (towards a side of outlet pipe 50) is arranged in the top of the bottom side of the place ahead of crankcase 31 and crankcase 31, and the downstream 60a of this secondary air supplying pipe 60 is connected with the part that is arranged in crankcase 31 the place aheads of outlet pipe 50.Particularly, the zone from the downstream of the 51d of downstream tapered portion to the 51e of downstream tube portion of the downstream 60a of secondary air supplying pipe 60 and upstream catalyst accommodating part 51 is connected (see figure 3).Secondary air supplying pipe 60 joint from itself and upstream catalyst accommodating part 51 on vehicle-width direction extends internally, and is crooked then and extend to the vehicle top.Then, the secondary air supplying pipe is further crooked, and the upstream extremity of this secondary air supplying pipe 60 is connected (seeing Fig. 1 and Fig. 2) with the leaf valve assembly 61 that is arranged in motor 30 sides.
In above-mentioned Straddle-type vehicle, because upstream catalyst accommodating part 51 and downstream catalyst accommodating part 52 is arranged to separated from each other and crankcase 31 between them, so can improve exhaust emission control function by when keeping the clearance of vehicle, in outlet pipe 50, holding two catalyzer.
In addition, the invention is not restricted to the foregoing description, but can make various modifications.For example, upstream catalyst accommodating part 51 can be arranged in the place ahead of motor 30, and pipe portion 53 can be arranged in crankcase 31 tops and in the side of cylinder block 32, and downstream catalyst accommodating part 52 can be arranged in crankcase 31 tops.Fig. 4 illustrates the side view according to this embodiment's Straddle-type vehicle.In the figure, represent with same numeral, hereinafter omit its detailed description with parts identical among Fig. 1 to 3.
In Fig. 4, the cylinder block 32 of motorcycle 2 is arranged to the attitude of oblique top rake.In addition, cylinder head 33 is installed on the top of cylinder block 32.Crankcase 31 is installed on the bottom of cylinder block 32.The anterior 31a of crankcase 31 is positioned at the place ahead at the joining portion of crankcase 31 and cylinder block 32.Outlet pipe 50 is connected with the relief opening that is arranged on cylinder head 33 the place aheads, and the upstream catalyst accommodating part 51 of outlet pipe 50 is arranged in and is arranged in cylinder block 32 and cylinder head 33 belows and the space above the anterior 31a of crankcase 31.In addition, upstream catalyst accommodating part 51 is arranged in the inboard on vehicle-width direction of the side of cylinder block 32.Therefore, can arrange upstream catalyst accommodating part 51 and not increase vehicle width.
In addition, downstream catalyst accommodating part 52 is arranged to avoid the vehicle width of motorcycle 2 to increase.Particularly, the rear portion 31b that is installed in the crankcase 31 on the bottom of cylinder block 32 of motorcycle 2 is positioned at the rear at the joining portion of crankcase 31 and cylinder block 32, and the rear portion 31b of crankcase 31 top also is provided with the space.It is adjacent at the superolateral sidewall of vehicle-width direction with cylinder block 32 that the pipe portion 53 of outlet pipe 50 is arranged to.Downstream catalyst accommodating part 52 is connected with the downstream of pipe portion 53, and is arranged in and is arranged in cylinder block 32 rears and the space above the 31b of the rear portion of crankcase 31.Therefore, cylinder block 32 is arranged between downstream catalyst accommodating part 52 and the upstream catalyst accommodating part 51, thereby makes downstream catalyst accommodating part 52 can not increase vehicle width.
In addition, in above-mentioned motorcycle 2, can improve exhaust emission control function by in the favourable layout that keeps vehicle, in outlet pipe 50, holding two catalyzer.
Description of reference numerals
1: motorcycle, 2: motorcycle, 4: pivot, 5: front fork, 6: body cover, 8: leg guard, 9: steering handle, 7: handle, 10: vehicle body frame, 11: main frame, 12: seat rail, 13: vehicle seat, 14: rear pole, 17: rear arm support, 18: rear suspension, 19: postbrachium, 21: trailing wheel, 22: front mudguard, 23: front-wheel, 24: radiator, 27: head tube, 30: engine, 31: crankcase, 32: cylinder block, 33: cylinder head, 35: throttle body, 40: silencer, 41: the first next doors, 42: the second next doors, 43: expanding chambers, 44: second expansion chamber, 45: triple-expansion chamber, 46: pipe arrangement, 47: tail pipe, 50: blast pipe, 51: the upstream catalyst accommodation section, 52: downstream catalyst accommodation section, 53: pipe section, 60: the auxiliary air supply pipe, 61: leaf valve assembly, 63: pipe arrangement, 65: resonator
Claims (16)
1. Straddle-type vehicle with exhaust emission control function comprises:
Be fixed on the motor on the vehicle body frame,
Be connected to described waste pipe, described outlet pipe extends to described motor the place ahead, and is crooked then and extend back on vehicle heading, and
Be arranged in a plurality of catalyzer in the described outlet pipe, and
Wherein, described outlet pipe comprises upstream catalyst accommodating part that accommodates at least one catalyzer in described a plurality of catalyzer and the downstream catalyst accommodating part that accommodates all the other catalyzer in described a plurality of catalyzer, described downstream catalyst accommodating part is arranged in away from described upstream catalyst accommodating part and in the position in downstream, described upstream catalyst accommodating part, and
At least a portion of described motor is arranged between described upstream catalyst accommodating part and the described downstream catalyst accommodating part;
It is characterized in that this Straddle-type vehicle also comprises the secondary air supplying pipe of the exhaust feeding secondary air in described outlet pipe, and
Wherein said secondary air supplying pipe is arranged in the top of the bottom side of described motor, and is connected with the part in vehicle heading the place ahead of the crankcase that is arranged in described motor of described outlet pipe.
2. Straddle-type vehicle according to claim 1 is characterized in that, described outlet pipe is connected with described motor, and extends to the place ahead of described motor, and is crooked then and extend back on vehicle heading below described motor,
Described upstream catalyst accommodating part is arranged in the place ahead of vehicle heading of the lowest positions of described motor, and
Described downstream catalyst accommodating part is arranged in the rear of vehicle heading of the described lowest positions of described motor.
3. Straddle-type vehicle according to claim 1 is characterized in that, described upstream catalyst accommodating part is arranged in the place ahead of vehicle heading of the crankcase of described motor, and
Described downstream catalyst accommodating part is arranged in the rear of vehicle heading of the described crankcase of described motor.
4. Straddle-type vehicle according to claim 3, it is characterized in that, described outlet pipe is connected with described motor, and extends to the place ahead of described motor, and is crooked then and extend back on vehicle heading below the described crankcase of described motor.
5. according to each described Straddle-type vehicle in the claim 1 to 4, it is characterized in that the downstream side of the described upstream catalyst in described secondary air supplying pipe and the described upstream catalyst accommodating part is connected.
6. according to each described Straddle-type vehicle in the claim 1 to 4, it is characterized in that the cylinder block of described motor is arranged to the attitude that its top turns forward on vehicle heading.
7. Straddle-type vehicle according to claim 6 is characterized in that described motor comprises 4 two-stroke engines.
8. Straddle-type vehicle according to claim 6 is characterized in that, described upstream catalyst accommodating part is arranged in the rear of the vehicle heading foremost of described motor.
9. Straddle-type vehicle according to claim 6 is characterized in that, described upstream catalyst accommodating part is in the attitude that is elongated shape on the flow direction of exhaust gases and is arranged to turn forward on vehicle heading.
10. according to each described Straddle-type vehicle in the claim 1 to 4, it is characterized in that described upstream catalyst accommodating part comprises tympanic part with at the described catalyzer of this upstream catalyst accommodating part internal support, and
The Center Gap that described tympanic part is arranged on its center line and the vehicle-width direction is opened.
11. Straddle-type vehicle according to claim 10 is characterized in that, the whole tympanic part of described upstream catalyst accommodating part is arranged on the position of lateral shift at the center on the vehicle-width direction.
12., it is characterized in that the whole tympanic part of described upstream catalyst accommodating part is arranged in the inboard of vehicle-width direction of at least a portion of the side of described motor according to each described Straddle-type vehicle in the claim 1 to 4.
13. according to each described Straddle-type vehicle in the claim 1 to 4, it is characterized in that this Straddle-type vehicle also comprises the lid that covers Vehicular body front, and
At least a portion of wherein said lid is arranged in the place ahead of the vehicle heading of described upstream catalyst accommodating part.
14., it is characterized in that the whole tympanic part of described upstream catalyst accommodating part is arranged in the horizontal plane below that comprises the front-wheel axletree according to each described Straddle-type vehicle in the claim 1 to 4.
15. Straddle-type vehicle according to claim 1 is characterized in that, described outlet pipe is to extending with the place ahead of the joint of described motor, and is crooked then and arrange backward on vehicle heading in the side of the cylinder block of described motor, and
Described upstream catalyst accommodating part is arranged in the place ahead of vehicle heading of the described cylinder block of described motor.
16., it is characterized in that described outlet pipe is to extending with the place ahead of the joint of described motor according to claim 1 or 15 described Straddle-type vehicles, crooked then and on vehicle heading, arrange backward in the side of the cylinder block of described motor,
The crankcase of described motor comprises the rear portion that is positioned at the rear of described cylinder block on vehicle heading, and
Described downstream catalyst accommodating part is arranged in the top at the described rear portion of the rear of vehicle heading of cylinder block of described motor and described crankcase.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP227300/2005 | 2005-08-04 | ||
| JP2005227300A JP2007040250A (en) | 2005-08-04 | 2005-08-04 | Saddle riding type vehicle having exhaust emission control function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1908396A CN1908396A (en) | 2007-02-07 |
| CN100532798C true CN100532798C (en) | 2009-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101106314A Active CN100532798C (en) | 2005-08-04 | 2006-08-04 | Saddle-ride type vehicle with exhaust gas purification function |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2007040250A (en) |
| CN (1) | CN100532798C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009215997A (en) | 2008-03-11 | 2009-09-24 | Yamaha Motor Co Ltd | Saddle riding type vehicle |
| DE602008005145D1 (en) * | 2008-08-29 | 2011-04-07 | Yamaha Motor Res & Dev Europ S R L | An exhaust gas purification device for a motorcycle and a motorcycle equipped with such an exhaust gas purification device |
| JP5362694B2 (en) * | 2010-12-07 | 2013-12-11 | 本田技研工業株式会社 | Saddle riding vehicle |
| JP5778947B2 (en) * | 2011-03-02 | 2015-09-16 | 本田技研工業株式会社 | Exhaust gas purification device for saddle-ride type vehicles |
| JP6375748B2 (en) * | 2014-07-17 | 2018-08-22 | スズキ株式会社 | Arrangement structure of the resonator of the saddle riding type vehicle |
| EP3236037A4 (en) * | 2014-12-19 | 2018-03-28 | Yamaha Hatsudoki Kabushiki Kaisha | Saddle-type vehicle |
| JP6612304B2 (en) * | 2017-11-15 | 2019-11-27 | 本田技研工業株式会社 | Saddle riding vehicle |
| JP6658820B2 (en) * | 2018-08-08 | 2020-03-04 | スズキ株式会社 | Motorcycle |
| CN113646513A (en) * | 2019-03-25 | 2021-11-12 | Tvs电机股份有限公司 | Motor vehicle comprising a combustion engine and an exhaust system |
-
2005
- 2005-08-04 JP JP2005227300A patent/JP2007040250A/en active Pending
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2006
- 2006-08-04 CN CNB2006101106314A patent/CN100532798C/en active Active
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| Publication number | Publication date |
|---|---|
| CN1908396A (en) | 2007-02-07 |
| JP2007040250A (en) | 2007-02-15 |
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