CN101837811B - Fuel supply device of motorcycle - Google Patents
Fuel supply device of motorcycle Download PDFInfo
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- CN101837811B CN101837811B CN 201010161417 CN201010161417A CN101837811B CN 101837811 B CN101837811 B CN 101837811B CN 201010161417 CN201010161417 CN 201010161417 CN 201010161417 A CN201010161417 A CN 201010161417A CN 101837811 B CN101837811 B CN 101837811B
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Abstract
The present invention provides a fuel supply device of a motorcycle, which an engine which is provided with an approximately frontward inclined pressure cylinder assembly is equipped to the lower part of a bent beam part of body frame. An air intake device is connected with an air intake opening which is formed at the top surface of the pressure cylinder assembly through an air intake channel. Through the extension of the air intake channel from the air intake opening to the upside, the air intake channel is bent to the front side of the body and simultaneously gets close to the bent beam part, the air intake device is configured to the front upper side of the pressure cylinder assembly. A fuel spraying device is provided at the bent peripheral part and middle part of the air intake channel. In the front view of the vehicle, the fuel spraying device is equipped to incline backwards in a direction opposite from the bending direction of the air intake channel. Furthermore, in the top view of the vehicle, the bent beam part and the fuel spraying device are juxtaposed in the width direction of the vehicle.
Description
Technical field
The present invention relates to a kind of fuel supply system of motor bike, it utilizes extraction pump type fuel injection apparatus to supply fuel to be suspended in the driving engine of downside of camber beam part of camber beam (underbone) type vehicle body frame.
Background technology
In recent years, as the fuel supply system of motor bike, the fuel supply system of fuel injection type has replaced the fuel supply system of traditional carburetor type and has obtained generally using widely.The fuel supply system of this fuel injection type comprises petrolift and pressure regulator; Wherein petrolift supplies the fuel to fuel injection valve (eductor) from Fuel Tank, and pressure regulator is regulated and turned back in the Fuel Tank by the fuel pressure of petrolift supercharging and with too much fuel.
Usually, in motor bike, because the needs of arrangement of parts, petrolift and pressure regulator are often integrated, so that be arranged in the Fuel Tank.Yet for to the fuel pressure boost in the Fuel Tank and supply fuel in the fuel injection valve, petrolift needs sizable driving voltage.Therefore, in motor scooter that battery is not installed etc., be difficult to adopt aforesaid petrolift to be installed in the fuel supply system in the Fuel Tank.
So, a kind of fuel supply system that utilizes the fuel injection apparatus of extraction pump type is provided, for example, in that kind described in the open No.2001-221137 (patent documentation 1) of Japanese Patent.In the fuel injection apparatus of extraction pump type, by the plunger piston type petrolift and the whole setting of fuel injection valve of solenoid-driven.
This petrolift also has the function of pressure regulator, and is connected on it to the fuel return line the Fuel Tank from superfluous (too much) fuel of fuel injection valve circulation.
Because in petrolift, can produce steam (, bubble) during to fuel pressure boost, this steam turns back in the Fuel Tank through fuel return line.Therefore, can prevent that bubble is included in the injected fuel, and fuel can accurately spray according to required amount.
In the fuel injection apparatus of aforesaid extraction pump type, because petrolift becomes whole with fuel injection valve, so the fuel feeding of the negative pressure enforcement of deadweight through fuel and petrolift generation from the fuel outlet of Fuel Tank to fuel injection valve.
And, since will be used to increase fuel pressure with the plunger pump of burner oil as petrolift, so the negative pressure that sucks fuel from the fuel outlet of Fuel Tank almost can not realize.Therefore, be necessary at lower position fuel injection apparatus to be set, facilitate the use fuel gravity fueling with respect to Fuel Tank.
In the fuel injection apparatus of aforesaid extraction pump type; Because the size compared on short transverse is bigger in the traditional spraying equipment that only is made up of eductor; Be installed under the situation in the driving engine on the vehicle body frame that hangs and be installed to camber beam-type at fuel injection apparatus; Space between the camber beam partial sum driving engine of vehicle body frame is narrower, does not have leeway, space.
As disclosing described in the No.2000-249028 (patent documentation 2) at Japanese Patent; Can't must fuel injection apparatus be installed in the position that fuel injection apparatus can not interfere with avoiding; The shape of the camber beam part of while Car Body Considering framework; Perhaps as disclosing described in the No.2006-57566 (patent documentation 3) at Japanese Patent; Must be with the mode attaching fuel injection apparatus that turns forward, be bent to form the air inlet pipe of the free air diffuser of the front portion of leading to car body and sidepiece simultaneously consumingly.
Yet; In patent documentation 2 in the disclosed fuel supply system; Fuel injection apparatus just in time is arranged in the camber beam part below of vehicle body frame; And in birds-eye view, camber beam part, free air diffuser and fuel injection apparatus are all overlapping each other, must fuel injection apparatus be arranged on the mid point front side of the bent intermediate part of camber beam part.Therefore, the installation site of fuel injection apparatus is suppressed, and must partly be provided with camber beam higher, in the narrow space between camber beam partial sum driving engine fuel injection apparatus to be set.Therefore, can produce motor bike, be difficult to ride up on the motor bike easily across the part problem of higher.
And in the disclosed fuel supply system, the air inlet pipe that is equivalent to free air diffuser bends to the front portion and the sidepiece of car body largely in patent documentation 3, and free air diffuser is not straight, and the length of free air diffuser is longer.Therefore, produce the problem that intake efficiency reduces and be difficult to the engine power characteristic that keeps good.
On the other hand, the steam that in fuel injection apparatus, produces turns back in the Fuel Tank through fuel return line.In order to prevent that steam from residing in the fuel return line, thereby exhaust steam reliably must make the end of approaching Fuel Tank in the fuel return line be higher than the end of approaching fuel injection apparatus.
Consider this situation; For example; The open No.2004-360481 (patent documentation 4) of Japanese Patent discloses an example of fuel supply system, and this fuel supply system utilizes fuel pump deliver line and fuel return line to connect the part between the fuel injection apparatus of Fuel Tank and driving engine linearly, and this Fuel Tank is installed on the rear portion of car body; In fuel return line, height reduces towards engine side.
Disclosed fuel supply system is configured in the patent documentation 4, makes that all fuel turns back in the Fuel Tank in the fuel return line.Yet,, in fuel pump deliver line, possibly produce the phenomenon of lack of fuel because fuel pump deliver line has very long length.
And; Because the connecting bridge of fuel pump deliver line and the connecting bridge of fuel return line are arranged to closer to each other in Fuel Tank; May cause fuel pump deliver line directly to absorb the situation that turns back to the steam the Fuel Tank from fuel return line, the effect of removing the steam in the fuel pump deliver line can reduce.
And, particularly in motor scooter, because becoming can store the high capacity storage tank and the Fuel Tank of the helmet etc., the car body layout is installed under the vehicle seat, in any case driving engine all can be departed from the position of Fuel Tank along longitudinal direction of car.In addition, fuel pump deliver line and fuel return line are arranged to walk around storage tank.Therefore, total length is elongated.For fuel pump deliver line and fuel return line are shortened, the capacity of storage tank must dwindle.
Summary of the invention
Consider situation about occurring in the above-mentioned prior art and visualize the present invention; The object of the present invention is to provide a kind of fuel supply system of motor bike; Wherein the fuel injection apparatus of extraction pump type is installed in the driving engine; This engine installation is on the vehicle body frame of camber beam-type, and it can have intake efficiency and the combustion efficiency of having improved, and can not increase the size between camber beam part and the driving engine.
Another object of the present invention is to provide a kind of fuel supply system of motor bike, and it can guarantee high-capacity storage tank, and the fuel in the fueling case reliably, and reliably the steam that produces of circulating fuel spraying equipment in Fuel Tank.
To achieve these goals, according to the present invention, a kind of fuel supply system of motor bike is provided; Wherein have the engine suspension of the pressure cylinder assembly that approximate horizontal leans forward and the bottom of the camber beam part that is installed in vehicle body frame, air intake apparatus is connected to via free air diffuser on the admission port that is formed on pressure cylinder assembly end face, through with free air diffuser after admission port extends to upside; Free air diffuser is crooked, approaching to the camber beam part simultaneously to the front side of car body; And air intake apparatus is arranged on the front upper side of pressure cylinder assembly, fuel injection apparatus is installed in the peripheral part and the pars intermedia of the bending of this free air diffuser, in the front elevation of vehicle; Free air diffuser and fuel injection apparatus are with respect to the imaginary centres face tilt of the car body side to the vehicle-width direction; In the lateral plan of vehicle, fuel injection apparatus is mounted on the direction opposite with the bending direction of free air diffuser towards rear-inclined, and; In the birds-eye view of vehicle, camber beam partial sum fuel injection apparatus is arranged side by side on vehicle-width direction.
In a preferred embodiment of foregoing invention, preferably, in the lateral plan of vehicle, the top at least and the camber beam of fuel injection apparatus are overlapped.
Fuel injection apparatus can be arranged on the rear side surface of free air diffuser, in the front elevation of vehicle, overlaps each other with free air diffuser.Can be designed to, in the front elevation of vehicle, at the lopsidedness opposite with the cam chain box, this cam chain box is arranged on a side of pressure cylinder assembly on vehicle-width direction for free air diffuser and fuel injection apparatus.
More preferably; In the front elevation of vehicle, light-up plug is arranged on a side opposite with the cam chain box on vehicle-width direction, and wherein this cam chain box is arranged on a side of pressure cylinder assembly; And free air diffuser and fuel injection apparatus are at the lopsidedness identical with the cam chain box.
Fuel injection apparatus can have the structure that petrolift and fuel injection valve at least are integrated into one.
Fuel supply system according to motor bike of the present invention with above-mentioned characteristic; Can the fuel injection apparatus of extraction pump type be installed in and hang and be installed in the driving engine on the camber beam-type vehicle body frame; Avoid the interference between fuel injection apparatus and the camber beam part simultaneously; And can not increase the size between camber beam part and the driving engine, and keep the length of free air diffuser short and be shaped as the long-radius curve shape.And, can also realize the improvement of intake efficiency and combustion efficiency, also can realize protection to fuel injection apparatus, if the rider partly lowers camber beam, can also realize easier driving.
In conjunction with accompanying drawing, characteristic of the present invention and Geng Duo characteristic will become clearer from the following description.
Description of drawings
In the accompanying drawings:
Fig. 1 is vehicle body frame and the driving engine left view of using according to the motor bike of fuel supply system of the present invention on every side;
Fig. 2 is the front elevation that the arrow II from Fig. 1 sees, illustrates according to the first embodiment of the present invention;
Fig. 3 is the birds-eye view that the arrow III from Fig. 1 sees;
Fig. 4 is a front elevation, shows second embodiment according to fuel supply system of the present invention;
Fig. 5 is a right elevation, member or the element relevant with them among the vehicle body frame that shows motor bike and driving engine and the embodiment;
Fig. 6 is the birds-eye view of motor bike shown in Figure 5;
Fig. 7 is the vertical sectional view along the line VII-VII intercepting of Fig. 5;
Fig. 8 is a right elevation, shows member or the element relevant with them in the fuel supply system of vehicle body frame and driving engine and another embodiment of motor bike; With
Fig. 9 is the birds-eye view of motor bike shown in Figure 8.
The specific embodiment
The preferred embodiments of the present invention will combine accompanying drawing to describe following.And, it should be noted that " go up ", " among this paper descended ", " right, " left side " etc. term be according to the common standing state use of the diagram of accompanying drawing or motor bike.
Referring to Fig. 1 to 3; The vehicle body frame 2 of motor bike 1 is a camber beam-type; Wherein thick camber beam pipe 4 extends to the back downside from the head pipe 3 of the place ahead head of being positioned at vehicle body frame; Engine holding frame 5 and 6 is separately positioned on the pars intermedia and the rear portion of camber beam pipe 4, and a pair of right side, left side seat pipe 7 pars intermedias from camber beam pipe 4 extend to the back upside.
And, for example being provided with cam chain box 21 in the left side of cylinder cap 17, the cam chain (not shown) of rotation drive cam shaft is packed into wherein.Be attached to the opposition side that light-up plug 22 on the cylinder cap 17 is arranged on cam chain box 21 to be exposed to mode in the combustion chamber 18.
On admission port 19, be combined with throttle body 26 and air filter 27 corresponding to air intake apparatus through air inlet pipe 25 (like free air diffuser).Air inlet pipe 25 forms, and in the lateral plan of car body, extends upward and bend to the front side of car body from admission port 19, and is approaching to camber beam pipe 4 simultaneously.
And fuel injection apparatus 28 is installed on the air inlet pipe 25.Fuel injection apparatus 28 is the extraction pump type, and wherein petrolift, fuel injection valve and pressure regulator are integrated into one unit.
And; As shown in Figure 2; In the front elevation of vehicle, air inlet pipe 25 and fuel injection apparatus 28 on vehicle-width direction with respect to the imaginary centres face C of car body with the angle tilt of about 20 to 30 degree to a side, that is to say; For example, tilt on vehicle-width direction a side (just right side) opposite with the cam chain box in the left side that is arranged on pressure cylinder assembly 14 21.
In the front elevation of vehicle, fuel injection apparatus 28 is arranged on the rear side of air inlet pipe 25 with overlapping mode.In the case, car body imaginary centres face C is the surface at the center of center and pressure cylinder assembly 14 (combustion chamber 18) through camber beam pipe 4.
Therefore, fuel injection apparatus 28 is arranged on the right side of camber beam part, makes in the birds-eye view of vehicle; As shown in Figure 3; Camber beam partial sum fuel injection apparatus 28 is arranged side by side on vehicle-width direction, and the top at least and the camber beam of fuel injection apparatus 28 overlap, and is as depicted in figs. 1 and 2.
In the fuel supply system 30 of as above constructing; When driving engine 12 startings; Ambient air is purified and is sucked through entrance negative pressure by air filter 27; Air inlet requirement in response to chaufeur in throttle body 26 is adjusted to the flow corresponding to throttle opening by the throttle gate (not shown), makes charge flow cross air inlet pipe 25.
Fuel with engine speed and throttle opening coupling on amount sprays to admission port 19 from fuel injection apparatus 28 simultaneously.In air inlet, the air fuel mixture that therefore produces is inhaled in the pressure cylinder assembly 14, promptly in the combustion chamber 18 in admission port 19 place's fuel mix.
According to this fuel supply system 30, in the front elevation of vehicle, air inlet pipe 25 and fuel injection apparatus 28 on vehicle-width direction with respect to car body imaginary centres face C to lopsidedness.
In addition, camber beam pipe 4 is arranged to fuel injection apparatus 28, and they are arranged side by side on vehicle-width direction in the birds-eye view of vehicle, and the top at least of fuel injection apparatus 28 is arranged to, and is overlapping with camber beam pipe 4 in the lateral plan of vehicle.
Therefore, can avoid the interference between fuel injection apparatus 28 and the camber beam pipe 4, and can not increase camber beam pipe 4 and driving engine 12 is the gap between the pressure cylinder assembly 14.
Therefore, can improve the alerting ability that the fuel injection apparatus 28 of extraction pump type is installed in the topological design in the driving engine 12 significantly, wherein this driving engine 12 hangs and is installed on the camber beam-type vehicle body frame 2.
Through make air inlet pipe 25 length and shape shortens and form air inlet pipe 25 with the curve shape that relaxes, can also reduce intake air restriction, thereby improve intake efficiency and combustion efficiency significantly.
And in the front elevation (referring to Fig. 2) of vehicle, air inlet pipe 25 is orientated roughly tangential direction with respect to combustion chamber 18, thus can produce whirlpool or eddy current in the air fuel mixture in being drawn into combustion chamber 18, thus help to improve combustion efficiency.
And air inlet pipe 25 and the lopsidedness of fuel injection apparatus 28 to vehicle-width direction simultaneously, comprise that the air intake apparatus of throttle body 26 and air filter 27 is arranged in the front upper part zone away from pressure cylinder assembly 14.Therefore, the position of camber beam pipe 4 can further reduce, and when chaufeur rides over 1 last time of motor bike, can ride on easily on camber beam pipe 4.
And; Because fuel injection apparatus 28 is arranged to, and is overlapping with air inlet pipe 25 in the front elevation of vehicle, and is arranged on the rear section of air inlet pipe 25; Thereby when vehicle was advanced, combustion jet equipment 28 can be protected and avoid from the infringement of the sudden stone of front wheel side, muddy water etc.
And, because air filter 27 is arranged on the place ahead of fuel injection apparatus 28, when vehicle is advanced, can prevent the collision of fuel injection apparatus 28 and obstacle effectively.
Fig. 4 is the front elevation that illustrates according to second embodiment of fuel supply system of the present invention.This fuel supply system 32 on more following, have with first embodiment in the identical substantially structure of fuel supply system 30; Promptly; In the front elevation of vehicle; With respect to the cam chain box 21 of a side that is arranged on pressure cylinder assembly 14, the opposition side on the vehicle-width direction of standdle carrier body imaginary centres face C is provided with light-up plug 22.
Yet in this second embodiment, air inlet pipe 25 is arranged to fuel injection apparatus 28, to the lopsidedness identical with cam chain box 21.Other component part or element be identical substantially with first embodiment basically, thereby omitted their explanation at this.
In the structure of this embodiment, aspect the leaning angle that increases air inlet pipe 25 and fuel injection apparatus 28, there is restriction.Yet the air fuel mixture stream that flows through air inlet pipe 25 can be directed to light-up plug 22.Therefore, can improve ignitability, thereby increase combustion efficiency, this helps saving fuel consumption.
Another embodiment of the present invention will describe to Fig. 9 referring to Fig. 5 below.
Referring to Fig. 5, another preferred embodiment will be described, wherein the vehicle body frame 102 of motor bike 101 is camber beam-types, and is configured to a thick camber beam pipe 104 and extends to the back downside from the head pipe 103 that is positioned at the place ahead head. Engine holding frame 105 and 106 is separately positioned on the pars intermedia and the rear portion of camber beam pipe 104, and a pair of right side, left side seat pipe 107 pars intermedias from camber beam pipe 104 extend to the back upside.
And right, left side seat pipe 107 links together through the bridge member 108 that on vehicle-width direction, extends, and the pars intermedia of bridge member 108 and rear side engine holding frame 106 utilize standpipe 109 to link together.In addition, the rearward end of seat pipe 107 is connected to each other through the bridge member 110 that on vehicle-width direction, extends.
Driving engine 112 is installed to the preceding downside of the vehicle body frame 102 of suspension from then on, and driving engine 112 is by constituting such as the air-cooled single cylinder engine of four stroke.
The pressure cylinder assembly 114 of driving engine 112 is attached on the front surface of engine shell 113, is level basically but turn forward, and the front upper part of engine shell 113 and rear portion fastening respectively be installed on the engine holding frame 105 and 106 of vehicle body frame 102.
Admission port 115 is arranged on the end face of pressure cylinder assembly 114, and throttle body 117 is connected on the admission port 115 through the air inlet pipe (free air diffuser) 116 that bends to the front side, and air filter 118 is connected to the front portion of throttle body 117.
On the other hand, storage tank 123 is provided with the motorcycle body parallel longitudinal with the place, upper back of Fuel Tank 124 at vehicle body frame 102.Storage tank 123 has container shapes, and has the upper end of opening and formed by for example resin material, but also can be formed by steel plate etc.Thereby storage tank 123 is fixed between the right side, the left side seat pipe 107 with Fuel Tank 124 and is maintained between them.
The saddle (not shown) is installed in the top of storage tank to be opened and closed 123 and Fuel Tank 124, and can be near the oil filling port 125 of storage tank 123 and Fuel Tank 124 through opening this saddle.
And fuel supply system 130 comprises fuel filter 128, throttle body 117, fuel injection apparatus 121, Fuel Tank 124, and comprises fuel pump deliver line 132, fuel return line 141 and recirculating line 149, and these will be described below.
Fuel pump deliver line 132 is equivalent to supply the fuel to through fuel filter 128 from Fuel Tank 124 fuel pipeline of fuel injection apparatus 121; And be provided with the top hose 133 and bottom hose 134 that form rubber tube, be arranged to always keep descending with easy grade towards fuel injection apparatus 121 from Fuel Tank 124.In the case, for example, these flexible pipes 133 and 134 can be formed by other material, for example metal, resin etc.
As shown in Figure 6; Top hose 133 has following structure: the one of which end is connected on the fuel outlet 136 of adaptor union shape of the left front bottom that for example is formed on Fuel Tank 124; And the other end is connected on the filter inlet 137 of adaptor union shape, and this inlet 137 is formed on the upstream (right part) of fuel filter 128.Therefore, in birds-eye view, top hose 133 is provided with towards right front portion from left rearward diagonally.
And; Bottom hose 134 has following structure: its end is connected on the filter outlet 138 of the downstream end (left part) that is formed on fuel filter 128; And its centre portion extends towards the right side from the left side on vehicle-width direction in the place ahead of storage tank 123; And after striding across camber beam pipe 104; Extend in the zone that was positioned at camber beam pipe 104 belows of vehicle body frame 102 along the direction parallel with longitudinal direction of car to the previous dynasty, and the other end is connected in the fuel inlet 139 of the sidepiece that is formed on fuel injection apparatus 121.
The position of fuel outlet 136 fully is higher than fuel inlet 139.
Preceding flexible pipe 142 has following structure: its end is connected on the bypass outlet 145 at the top that is formed on fuel injection apparatus 121, and the other end is connected to trident branching portion 146, rear portion, the right side setting of these trident branching portion 146 contiguous storage tanks 123.
This backflow fuel inlet 147 is arranged on the bypass outlet 145 abundant high positions than fuel injection apparatus 121.
This trident branching portion 146 is arranged on than on the high position of fuel filter 128, and recirculating line 149 also is connected on the trident branching portion 146.The other end of recirculating line 149 is connected on the reflux tube joint 150, and this reflux tube joint 150 is near the upstream-side-end (right part) of fuel filter 128 is arranged on filter inlet 137.
Therefore; Recirculating line 149 forms from trident branching portion 146 branches, and is higher than fuel filter 128 and always keeps descending and being connected on the fuel filter 128 thereby this trident branching portion 146 is formed on pars intermedia and the position of fuel return line 141.
As stated, fuel return line 141 (preceding flexible pipe 142 and rear hose 143), trident branching portion 146 and recirculating line 149 are concentrated a side (right side) that is arranged on storage tank 123 on vehicle-width direction.In other words, member 141,146 and 149 is arranged on a side opposite with fuel pump deliver line 132, and storage tank 123 is between them.
In addition, the upstream of fuel filter 128 (being a side of filter inlet 137 and reflux tube joint 150 existence) is pointed to the side (being the right side) that fuel return line 141 is set.
And the bottom hose 134 of fuel feed line 132 and the preceding flexible pipe 142 of fuel return line 141 are arranged to the both sides through storage tank 123.Through flexible pipe 134 and 142 both centre portions are remained on hose retainer 152 and 153; Can prevent that they are lax; This hose retainer 152 and 153 is attached to the left side of storage tank 123 and the bottom of right lateral surface respectively; Section-drawing as along the line VII-VII intercepting of Fig. 5 is just shown in Figure 7, thereby keeps following posture: flexible pipe 134 and 142 both always keep rising gently towards rear side from the front side.
In the fuel supply system 130 of structure as stated; When driving engine 112 startings; Fuel in the Fuel Tank 124 enters into fuel filter 128 from the top hose 133 of fuel outlet 136 through fuel pump deliver line 132; After being filtered by fuel filter 128, fuel supplies to the fuel inlet 139 of fuel injection apparatus 121 through bottom hose 134 then.
Because fuel inlet 139 is present in than fuel outlet 136 abundant low positions; And be arranged to that fuel pump deliver line 132 always keeps from Fuel Tank 124 (fuel outlet 136) thereby descend be connected to fuel inlet 139; So fuel can utilize its deadweight to flow to fuel inlet 139 from fuel outlet 136 at an easy rate; And fuel can supply to extraction pump type fuel injection apparatus 121 reliably, prevents fuel shortage in fuel pump deliver line 132 simultaneously.
And, thereby too much fuel comes out to arrive trident branching portion 146 through the preceding flexible pipe 142 of fuel return line 141 from bypass outlet 145 in the fuel injection apparatus 121.
At rear hose 143 with from the recirculating line 149 that trident branching portion 146 extends forward; Because rear hose 143 rises and opposite recirculating line 149 is arranged to always keep descend towards fuel filter 128 towards backflow fuel inlet 147; So the too much fuel that arrives trident branching portion 146 by means of run by gravity to recirculating line 149; Through fuel filter 128 and once more through bottom hose 134, thereby supply in the fuel injection apparatus 121.Therefore, fuel recirculation efficiently.
On the other hand, steam (bubble) meeting that when the petrolift of fuel injection apparatus 121 pressurizes to fuel, produces enters the Fuel Tank 124 from backflow fuel inlet 147 from preceding flexible pipe 142, trident branching portion 146 and the rear hose 143 of the bypass outlet 145 process fuel return pipelines 141 of fuel injection apparatus 121.
And; The position that backflow fuel inlet 147 exists fully is higher than bypass outlet 145, and the fuel return line 141 (preceding flexible pipe 142 and rear hose 143) that connects backflow fuel inlet 147 and bypass outlet 145 is arranged to always keep rise and be connected to Fuel Tank 124 from fuel injection apparatus 121.Therefore, the steam of discharging from bypass outlet 145 can arrive backflow fuel inlet 147 easily, and can not reside in the fuel return line 141.
And; Fuel return line 141 (rear hose 143) is arranged on vehicle-width direction and fuel pump deliver line 132 (top hose 133) and the opposite side of Fuel Tank 124 bonded assembly connecting bridges (fuel outlet 136) with Fuel Tank 124 bonded assembly connecting bridges (backflow fuel inlet 147); Be inhaled into once more the fuel pump deliver line 132 so can prevent the steam that turns back to Fuel Tank 124 from fuel return line 141, the recirculation characteristic of steam improves.
On the other hand, the steam that comes out from fuel filter 128 is recycled to the Fuel Tank 124 through recirculating line 149.Because the lower end of recirculating line 149 is connected to the upstream of fuel filter 128, so can return steam to Fuel Tank 124 from fuel filter 128 rapidly and reliably.
In addition, in the fuel supply system 130 of said embodiment, pipeline component 141,146 and 149 is arranged on a side opposite with the fuel pump deliver line on storage tank 123 opposites 132.The upstream-side-end of fuel filter 128 is pointed to the side that fuel return line 141 (142 and 143) are set.
Fuel return line 141 (142 and 143), trident branching portion 146 and recirculating line 149 are all concentrated the right side that is arranged on storage tank 123.Therefore, can each pipeline component be set as far as possible directly, thereby prevent that steam from residing in each pipeline component, improve steam recirculation characteristic with shortest distance.
And; In this fuel supply system 130, because long fuel filter 128 near the downside setting of storage tank 123, is orientated the Width of vehicle simultaneously; So fuel filter 128 can be arranged on the optimum position, guarantee the big storage space of storage tank 123 simultaneously.
In addition; The bottom hose 134 of fuel pump deliver line 132 extends along vehicle-width direction in the place ahead of storage tank 123; And after crossing over camber beam pipe 104, along extending forward, thereby be connected to fuel injection apparatus 121 with the direction of the parallel longitudinal of vehicle body frame 102.
Therefore, bottom hose 134 can be through not being positioned at the part between camber beam pipe 4 and the driving engine 112 (pressure cylinder assembly 114).Therefore, can prevent to flow through the fuel quilt heat of highly warmed-up pressure cylinder assembly 114 of bottom hose 134.
Fig. 8 is vehicle body frame and driving engine on every side the right elevation of application according to the motor bike of another embodiment of fuel supply system of the present invention, and Fig. 9 is its birds-eye view.
In this second embodiment, because Fig. 8 is identical with the previous embodiment shown in Fig. 5 and 6 with all members shown in 9 and operation thereof, thus mark identical Reference numeral, and omitted explanation to them at this.
In this embodiment, fuel filter 128 is arranged on the place ahead of the bottom of storage tank 123.Therefore, compare with the situation of first embodiment, the top hose 133 of fuel pump deliver line 132 is longer, and bottom hose 134 is shorter, and recirculating line 149 is longer.
As stated, through fuel filter 128 being arranged on the place ahead of the bottom of storage tank 123, can effectively utilize the car body volume inside.
It should be noted that to the invention is not restricted to embodiment described here, in the scope that does not break away from additional claim, can carry out many other variation and modifications.
Claims (1)
1. the fuel supply system of a motor bike; Wherein have the engine suspension of the pressure cylinder assembly that approximate horizontal leans forward and the bottom of the camber beam part that is installed in vehicle body frame; Air intake apparatus is connected to via free air diffuser on the admission port that is formed on pressure cylinder assembly end face, through with free air diffuser after admission port extends to upside, free air diffuser is crooked, approaching to the camber beam part simultaneously to the front side of car body; And air intake apparatus is arranged on the front upper side of pressure cylinder assembly; Fuel injection apparatus is installed in the peripheral part and the pars intermedia of the bending of this free air diffuser, it is characterized in that, in the front elevation of vehicle; Free air diffuser and fuel injection apparatus are with respect to the imaginary centres face tilt of the car body side to the vehicle-width direction; In the lateral plan of vehicle, fuel injection apparatus is mounted on the direction opposite with the bending direction of free air diffuser towards rear-inclined, and fuel injection apparatus is arranged in the front elevation of vehicle overlapping with free air diffuser.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-355687 | 2006-12-28 | ||
| JP2006355687A JP4888114B2 (en) | 2006-12-28 | 2006-12-28 | Motorcycle fuel supply system |
| JP2007-018217 | 2007-01-29 | ||
| JP2007018217A JP4821634B2 (en) | 2007-01-29 | 2007-01-29 | Motorcycle fuel supply system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007103057590A Division CN101209737B (en) | 2006-12-28 | 2007-12-28 | Fuel feeding device for motorcycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101837811A CN101837811A (en) | 2010-09-22 |
| CN101837811B true CN101837811B (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010161417 Expired - Fee Related CN101837811B (en) | 2006-12-28 | 2007-12-28 | Fuel supply device of motorcycle |
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| Country | Link |
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| CN (1) | CN101837811B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6221492B2 (en) * | 2013-08-12 | 2017-11-01 | スズキ株式会社 | Motorcycle fuel tank support structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1265449A (en) * | 1999-03-02 | 2000-09-06 | 本田技研工业株式会社 | Fuel injector for motorcycle |
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2007
- 2007-12-28 CN CN 201010161417 patent/CN101837811B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1265449A (en) * | 1999-03-02 | 2000-09-06 | 本田技研工业株式会社 | Fuel injector for motorcycle |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-37165A 2002.02.06 |
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| Publication number | Publication date |
|---|---|
| CN101837811A (en) | 2010-09-22 |
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