CN102235276A - Fuel supplying device and fuel supplying system - Google Patents
Fuel supplying device and fuel supplying system Download PDFInfo
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- CN102235276A CN102235276A CN2010105540351A CN201010554035A CN102235276A CN 102235276 A CN102235276 A CN 102235276A CN 2010105540351 A CN2010105540351 A CN 2010105540351A CN 201010554035 A CN201010554035 A CN 201010554035A CN 102235276 A CN102235276 A CN 102235276A
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- fuel
- pressuring
- pressure regulation
- supplying device
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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
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Abstract
The invention provides a fuel supplying device capable of performing stable fuel supply and preventing reduction of spraying amount. The fuel supply device comprises: a fuel pressurizing device performing pressurization upon fuel in a fuel box and sucked from a fuel sucking channel via a filter, and spraying the fuel from the fuel spraying channel; an electromotor driving the fuel pressurizing device; and a pressure adjusting device adjusting pressure of fuel in the fuel spraying channel to a specified value, and returning the residual fuel to the fuel tank, in the fuel supplying device, the pressure adjusting device is configured in a cylinder, a lining cover separating a fuel drainage channel from the pressure adjusting device and the fuel sucking channel directed toward the fuel pressurizing device is in a tabling with the motor and the cylinder, making a part of the residual fuel returning from the pressure adjusting device to the fuel tank return to the fuel pressurizing device.
Description
Technical field
The present invention relates to a kind of fuel supplying device and fuel supply system, this fuel supplying device and fuel supply system are built-in with the pressure regulation device that the pressure of the fuel in the motor that supplies to small-sized cart etc. is for example adjusted.
Background technique
Because environmental problem such as greenhouse effects of the earth, become strict for the restriction of petrolic fuel consumption and waste gas.In recent years, also limit for the small-sized two small-sized air displacement motors of taking turns etc., under this background, to change the prior mechanical fuel supply system of using vaporizer (carburetor) to the fuel supply system of the motor of four-wheel wagon, cart into, turn to purpose with the low fuel consumptionization of motor and the cleaning of waste gas, require electronic controlization, be that FI (fuel injection) changes.
Main structure to the fuel supply system 1 that comprises existing fuel supplying device 3 describes.In Fig. 5, fuel supply system 1 comprises: fuel tank 102; Suck the fuel supplying device 3 of path 108 and fuel tank 102 bindings by fuel; And be connected with fuel supplying device 3 via fuel feed pipe 104, will supply with Fuelinjection nozzle 5 in the fuel chambers that the fuel that comes be ejected into not shown motor from fuel supplying device 3.
Existing fuel supplying device 3 is by fuel pressuring device 110, motor 111 and pressure regulation device 113 constitute, wherein, above-mentioned fuel pressuring device 110 will be from fuel tank 102 by filter 107 and suck the fuel that path 108 flows into from fuel and be forced into high pressure, then it is sprayed towards fuel feed pipe 104 sides from fuel ejection path 109, above-mentioned motor 111 is used to drive above-mentioned fuel pressuring device 110, above-mentioned pressure regulation device 113 is adjusted to specified value with the fuel pressure that fuel sprays in the path 109, and makes residual fuel turn back to fuel tank 102 from fuel drain passageway 112.
In addition, the fuel supplying device 3 as being built-in with pressure regulation device 113 is made of axial piston pump.In existing apparatus, the fuel drain passageway 112 that makes residual fuel and steam turn back to fuel tank 102 from pressure regulation device 113 is sucked passage side with the fuel of fuel pressuring device 110 separate the vapour locking when preventing high temperature (vapor lock).
Patent documentation 1: the Japan Patent spy opens the 2008-255846 communique
In above-mentioned fuel supplying device 3 in the past, fuel drain passageway 112 is sucked path 108 sides with the fuel of fuel pressuring device 110 to be separated, prevent to suck the steam that in pressure regulation device 113, produces, and the fuel that suppresses fuel pressuring device 110 sucks the fuel temperature rising of path 108 sides, thereby the vapour locking when preventing high temperature, wherein, above-mentioned fuel drain passageway 112 makes remaining fuel and steam 102 return from pressure regulation device 113 towards fuel tank.
Yet, make residual fuel and steam all turn back to the structure of fuel tank 102 by employing from pressure regulation device 113, thereby can prevent to suck the steam that in pressure regulation device 113, produces, yet there is following technical problem: when high temperature, because the steam that in fuel pressuring device 110, produces, the fuel that is arranged on fuel tank 102 and fuel pressuring device 110 sucks the eyelet obstruction of the filter 107 between the path 108, the pressure loss can occur increases, the intake deficiency of fuel, the situation that the ejection flow from fuel ejection path 109 towards the fuel of fuel feed pipe 104 sides reduces.
Summary of the invention
The present invention does for solving the problems of the technologies described above, and its purpose is to provide a kind of fuel supplying device that can carry out stable fuel supply and can prevent the reduction of ejecting fuel flow capacity.
Fuel supplying device involved in the present invention comprises: the fuel in the fuel tank that sucks the path suction by filter from fuel pressurizeed, and with its fuel pressuring device from the ejection of fuel ejection path; Be used to drive the motor of above-mentioned fuel pressuring device; And the fuel pressure in the above-mentioned fuel ejection path adjusted to specified value, and make residual fuel turn back to the pressure regulation device of above-mentioned fuel tank, it is characterized in that, above-mentioned pressure regulation device is configured in the cylinder, to suck lining that path separates with above-mentioned motor and said cylinder tabling from the fuel drain passageway of above-mentioned pressure regulation device and above-mentioned fuel, a part that turns back to the residual fuel of above-mentioned fuel tank from above-mentioned pressure regulation device is turned back in the above-mentioned fuel pressuring device towards above-mentioned fuel pressuring device.
Can obtain to carry out stable fuel supply and can prevent the fuel supplying device that ejecting fuel flow capacity reduces according to fuel supply system involved in the present invention.
Description of drawings
Fig. 1 is the structural drawing of fuel supply system that comprises the fuel supplying device of embodiment of the present invention 1.
Fig. 2 is the plan view that the fuel supplying device partly cut-away with embodiment of the present invention 1 represents.
Fig. 3 is the plan view that the fuel supplying device partly cut-away with embodiment of the present invention 1 represents.
Fig. 4 is the major component sectional view of B-B line of Fig. 3 of the fuel supplying device of embodiment of the present invention 1.
Fig. 5 is the structural drawing that expression comprises the fuel supply system of existing fuel supplying device.
(symbol description)
101 fuel supply systems
102 fuel tanks
103 fuel supplying devices
107 filters
108 fuel suck path
109 fuel ejection path
110 fuel pressuring devices
111 motor
112 fuel drain passageways
113 pressure regulation devices
114 apertures
118 cylinders
119 fuel discharge outlets
128 linings
Embodiment
Below, according to Fig. 1 to Fig. 4 embodiments of the present invention 1 are described.Fig. 1 is the structural drawing of fuel supply system that comprises the fuel supplying device of embodiment of the present invention 1.Fig. 2 is the plan view that the fuel supplying device partly cut-away with embodiment of the present invention 1 represents.Fig. 3 is the plan view that the fuel supplying device partly cut-away with embodiment of the present invention 1 represents.Fig. 4 is the major component sectional view of B-B line of Fig. 3 of the fuel supplying device of embodiment of the present invention 1.
Main structure to the fuel supply system 101 that comprises fuel supplying device 103 describes.In Fig. 1, fuel supply system 101 comprises: fuel tank 102; Suck the fuel supplying device 103 of path 108 and fuel tank 102 bindings by fuel; And be connected with fuel supplying device 103 via fuel feed pipe 104, will supply with Fuelinjection nozzle 105 in the fuel chambers that the fuel that comes be ejected into not shown motor from fuel supplying device 103.
This fuel supplying device 103 is substantially by fuel pressuring device 110, motor 111 and pressure regulation device 113 constitute, wherein, above-mentioned fuel pressuring device 110 will be from fuel tank 102 by filter 107 and suck the fuel that path 108 flows into from fuel and be forced into high pressure, then it is sprayed towards fuel feed pipe 104 sides from fuel ejection path 109, above-mentioned motor 111 is used to drive above-mentioned fuel pressuring device 110, above-mentioned pressure regulation device 113 is adjusted to specified value with the fuel pressure that fuel sprays in the path 109, and makes residual fuel turn back to fuel tank 102 from fuel drain passageway 112.
In addition, the fuel pump apparatus 106 as being built-in with pressure regulation device 113 is made of axial piston pump.
Yet, in embodiments of the present invention 1, adopt following structure: the downstream side of the filter 107 in the fuel suction path of being located between fuel tank 102 and the fuel pressuring device 110 108, the part of the residual fuel of discharging from pressure regulation device 113 is turned back in the fuel pressuring device 110, different with above-mentioned conventional device in this, constitute a part that makes the residual fuel of discharging from pressure regulation device 113 by the constitutional details in the fuel supplying device 103 and turn back to structure in the fuel pressuring device 110, realized the minimizing of part number.
That is, adopt aperture 114 is set, so that the part of the residual fuel of discharging from pressure regulation device 113 turns back to the structure in the fuel pressuring device 110 of fuel supplying device 103.
Then, according to Fig. 2 and Fig. 3 the concrete structure of the fuel supplying device 103 of embodiment of the present invention 1 is described.In resin system main body 115, be built-in with fuel pressuring device 110, pressure regulation device 113 with fuel discharge port 120, fuel inhalation port 116, fuel ejection port one 17.
Be provided with fuel inhalation port 116 roughly cylindraceous, this fuel inhalation port 116 has the fuel that is used to make in the fuel tank 102 and sucks path 108 by filter 107 backs from the fuel that upper side supplies to fuel pressuring device 110.Be provided with fuel ejection port one 17 roughly cylindraceous, this fuel ejection port one 17 has after the fuel that the fuel suction path 108 from fuel inhalation port 116 flows into is forced into high pressure by fuel pressuring device 110, this fuel is ejected into the fuel ejection path 109 of fuel feed pipe 104 sides from bottom side.
Be provided with fuel roughly cylindraceous and discharge port 120, this fuel discharge port 120 has and will be communicated with from the fuel discharge outlet 119 that the residual fuel that pressure regulation device 113 is discharged is discharged, and makes the fuel drain passageway 112 that turns back to fuel tank 102 from the residual fuel of fuel discharge outlet 119.
Be provided with the swash plate 123 of fixed angle on the axle 122 of motor 111 with regulation.Above-mentioned swash plate 123 and piston 124 butts, above-mentioned piston 124 and cylinder 118 are chimeric to be become slidably.
Utilize 127 pairs of fuel pressurizations of plate of suction valve 125, ejection valve 126 and formation fuel pressure boost chamber.Be provided with lining 128, this lining 128 is chimeric with above-mentioned motor 111 and said cylinder 118, becomes from the fuel drain passageway 112 of above-mentioned pressure regulation device 113 and the dividing plate of above-mentioned fuel pressuring device 110.
In addition, fuel suction path 108 fuel interior or Fig. 1 that filter 107 is arranged on above-mentioned fuel inhalation port 116 suck in the path 108, and the fuel that sucks from fuel tank 102 is filtered.
In addition, a part that turns back to the residual fuel of above-mentioned fuel tank 102 from above-mentioned pressure regulation device 113 turns back in the above-mentioned fuel pressuring device 110 by aperture 114, above-mentioned aperture 114 is disposed at the downstream side of filter 107 in above-mentioned fuel pressuring device 110, for example, be disposed at the embedding part of said cylinder 118 and above-mentioned lining 128.
Fuel in the fuel supplying device 103 flows as shown in Figure 3.By the fuel suction path 108 inhalation flow Q1s of above-mentioned filter 107 from above-mentioned fuel inhalation port 116, utilize the needed flow Q2 of 113 pairs of not shown motors of above-mentioned pressure regulation device to carry out the pressure adjustment, then with fuel ejection path 109 ejections of this flow Q2 from above-mentioned fuel ejection port one 17.
By from the residual residual fuel of fuel ejection path 109 ejections of above-mentioned fuel ejection port one 17 via above-mentioned pressure regulation device 113, from the fuel discharge outlet 119 of the being located at cylinder 118 fuel drain passageway 112 by above-mentioned fuel discharge port 120 towards fuel tank 102 discharge flow rate Q3.
In addition, the aperture 114 of regulation is set at the said cylinder 118 and the embedding part of above-mentioned lining 128, a part that makes the residual fuel of discharging from the fuel discharge outlet 119 of being located at cylinder 118 via above-mentioned pressure regulation device 113 is by aperture 114, and in the above-mentioned fuel pressuring device 110 supply flow Q4.
Like this, a part that makes the residual fuel of discharging from fuel discharge outlet 119 is by aperture 114, and towards above-mentioned fuel pressuring device 110 interior supply flow Q4, by this, even if when high temperature, because of the steam that in above-mentioned fuel pressuring device 110, produces, eyelet obstruction of above-mentioned filter 107 etc. and pressure loss when fuel is sucked increases, fuel sucks under the not enough situation, also can be by aperture 114 being located between above-mentioned filter 107 and the above-mentioned fuel pressuring device 110, promptly in above-mentioned fuel pressuring device 110, be connected, thereby can obtain to realize towards the stable fuel supply of above-mentioned fuel pressuring device 110 and can prevent the fuel supplying device that ejecting fuel flow capacity reduces with the downstream side of above-mentioned filter 107.
In addition, as shown in Figure 4, the steam that in above-mentioned fuel pressuring device 110, produces when considering high temperature, the fuel inhalation port 130 of above-mentioned fuel supplying device 103 is disposed near the central authorities of said cylinder 118, from the fuel discharge outlet 119 of the residual fuel of above-mentioned pressure regulation device 113 and steam towards the upper side of above-mentioned cylinder 118, top opening for example, in order to prevent to suck the steam of discharging, above-mentioned aperture 114 is disposed at the lower side of the fuel discharge outlet 119 of above-mentioned pressure regulation device 113 from the fuel discharge outlet 119 of above-mentioned pressure regulation device 113.Piston slide part 129 disposes as illustrated in fig. 4.
Shown in arrow R, the part of the residual fuel of discharging from fuel discharge outlet 119 flows to lower side from the upper side of fuel discharge outlet 119, by turning back in the fuel pressuring device 110 behind the aperture 114.
The sectional area A3 in aperture 114 that can be by regulation adjusts the flow Q4 in the aperture 114 by the regulation that is made of above-mentioned lining 128, thereby carries out the fuel supply of requirement, by this, can suppress the interior fuel temperatures rising of above-mentioned fuel pressuring device 110.
In addition, will set for than big by the pressure loss in aperture 114 by the pressure loss of above-mentioned fuel pressuring device 110 and above-mentioned filter 107, adopt not can be from the aperture 114 settings that suck fuel.
Can will adopt the fuel supplying device of said structure to be applied to fuel supply system.
The present invention is for realizing carrying out stable fuel supply and can preventing that the fuel supplying device that ejecting fuel flow capacity reduces is suitable for.
Claims (11)
1. fuel supplying device comprises:
Fuel in the fuel tank (102) that sucks path (108) suction by filter (107) from fuel is pressurizeed, and it is sprayed the fuel pressuring device (110) of path (109) ejection from fuel;
Be used to drive the motor (111) of described fuel pressuring device (110);
And the fuel pressure in the described fuel ejection path (109) adjusted to specified value, and make residual fuel turn back to the pressure regulation device (113) of described fuel tank (102),
It is characterized in that,
Described pressure regulation device (113) is configured in the cylinder (118), to suck lining (128) that path (108) separates with described motor (111) and described cylinder (118) tabling from the fuel drain passageway (112) of described pressure regulation device (113) and described fuel, a part that turns back to the residual fuel of described fuel tank (102) from described pressure regulation device (113) is turned back in the described fuel pressuring device (110) towards described fuel pressuring device (110).
2. fuel supplying device as claimed in claim 1 is characterized in that,
Described fuel pressuring device (110) is made of axial piston pump.
3. fuel supplying device as claimed in claim 1 is characterized in that,
The fuel passage that the part that turns back to the residual fuel of described fuel tank (102) from described pressure regulation device (113) is turned back in the described fuel pressuring device (10) is connected between described filter (107) and the described fuel pressuring device (110).
4. fuel supplying device as claimed in claim 2 is characterized in that,
The fuel passage that the part that turns back to the residual fuel of described fuel tank (102) from described pressure regulation device (113) is turned back in the described fuel pressuring device (110) is connected between described filter (107) and the described fuel pressuring device (110).
5. as each described fuel supplying device in the claim 1 to 4, it is characterized in that,
The described fuel of described fuel pressuring device (110) sucks path (108) and is configured near described cylinder (118) central authorities, to be opened in the upper side of described cylinder (118) from the fuel discharge outlet (119) that the residual fuel of described pressure regulation device (113) is discharged, in the aperture (114) that the embedding part of described lining (128) and described cylinder (118) disposes regulation.
6. fuel supplying device as claimed in claim 5 is characterized in that,
Described aperture (114) is arranged on the below that described fuel sucks path (108).
7. fuel supplying device as claimed in claim 5 is characterized in that,
Described aperture (114) is arranged at described lining (128).
8. fuel supplying device as claimed in claim 5 is characterized in that,
The pressure loss in the time of will be by described aperture (114) is set for than big by the pressure loss of described fuel tank (102) and described filter (107).
9. fuel supplying device as claimed in claim 5 is characterized in that,
Adjust from described pressure regulation device (113) by the sectional area of described aperture (114) and to turn back to fuel flow rate in the described fuel pressuring device (110).
10. a fuel supply system is characterized in that,
Comprise each described fuel supplying device in the claim 1 to 4.
11. a fuel supply system is characterized in that,
Comprise the described fuel supplying device of claim 5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-101339 | 2010-04-26 | ||
| JP2010101339A JP5208158B2 (en) | 2010-04-26 | 2010-04-26 | Fuel supply device and fuel supply system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102235276A true CN102235276A (en) | 2011-11-09 |
| CN102235276B CN102235276B (en) | 2013-07-17 |
Family
ID=44886282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010554035 Expired - Fee Related CN102235276B (en) | 2010-04-26 | 2010-11-12 | Fuel supplying device and fuel supplying system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5208158B2 (en) |
| CN (1) | CN102235276B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5894823B2 (en) * | 2012-03-19 | 2016-03-30 | 本田技研工業株式会社 | Fuel supply structure for vehicles |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10288109A (en) * | 1997-04-17 | 1998-10-27 | Zexel Corp | Accumulator fuel system, and fuel pressure controlling method |
| US20030209232A1 (en) * | 2002-05-10 | 2003-11-13 | Hou Shou L. | Constant-speed multi-pressure fuel injection system for improved dynamic range in internal combustion engine |
| US20050274361A1 (en) * | 2004-06-14 | 2005-12-15 | Aisan Kogyo Kabushiki Kaisha | Fuel supply device for fuel returnless system |
| US20070221173A1 (en) * | 2006-03-23 | 2007-09-27 | Denso Corporation | Fluid apparatus having pumps and method for controlling the same |
| US20070246020A1 (en) * | 2006-04-19 | 2007-10-25 | Nikki Co., Ltd. | Fuel supply apparatus of engine |
| CN101280741A (en) * | 2007-04-03 | 2008-10-08 | 三菱电机株式会社 | Fuel supply device |
| CN101418756A (en) * | 2007-10-26 | 2009-04-29 | 三菱电机株式会社 | Fuel supply apparatus |
-
2010
- 2010-04-26 JP JP2010101339A patent/JP5208158B2/en not_active Expired - Fee Related
- 2010-11-12 CN CN 201010554035 patent/CN102235276B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10288109A (en) * | 1997-04-17 | 1998-10-27 | Zexel Corp | Accumulator fuel system, and fuel pressure controlling method |
| US20030209232A1 (en) * | 2002-05-10 | 2003-11-13 | Hou Shou L. | Constant-speed multi-pressure fuel injection system for improved dynamic range in internal combustion engine |
| US20050274361A1 (en) * | 2004-06-14 | 2005-12-15 | Aisan Kogyo Kabushiki Kaisha | Fuel supply device for fuel returnless system |
| US20070221173A1 (en) * | 2006-03-23 | 2007-09-27 | Denso Corporation | Fluid apparatus having pumps and method for controlling the same |
| US20070246020A1 (en) * | 2006-04-19 | 2007-10-25 | Nikki Co., Ltd. | Fuel supply apparatus of engine |
| CN101280741A (en) * | 2007-04-03 | 2008-10-08 | 三菱电机株式会社 | Fuel supply device |
| CN101418756A (en) * | 2007-10-26 | 2009-04-29 | 三菱电机株式会社 | Fuel supply apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102235276B (en) | 2013-07-17 |
| JP2011231648A (en) | 2011-11-17 |
| JP5208158B2 (en) | 2013-06-12 |
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