JP5142091B2 - Vehicle fuel supply system - Google Patents

Description

  The present invention relates to a vehicle fuel supply device, and more particularly to a vehicle fuel supply device that supplies fuel to an engine after fuel in a fuel tank is filtered by a fuel filter.

  In the fuel supply device for a vehicle, a fuel pump for supplying fuel in a fuel tank to the engine side through a fuel supply pipe is provided, and a fuel filter for filtering fuel from the fuel pump is provided in the middle of the fuel supply pipe There is. The fuel filter filters fuel, and a single fuel filter has a considerably large capacity in order to ensure a predetermined life.

Japanese Patent Application Laid-Open No. 2-191862 In the fuel supply device for automobiles according to Patent Document 1, a fuel filter is disposed on the discharge port side of a fuel pump in a fuel tank.

However, in the automobile fuel supply device according to Patent Document 1 described above, since the fuel filter is provided in the fuel tank, the fuel filter is placed in the fuel tank when the fuel filter is replaced, for example. There was a problem that maintenance and inspection of the fuel filter became difficult due to the necessity to put in and out.
In order to solve this problem, it is conceivable to dispose the fuel filter outside the fuel tank, but it is difficult in terms of space to dispose a large fuel filter with the required capacity outside the fuel tank. .

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a vehicle fuel supply device that facilitates maintenance and inspection of a fuel filter and can secure a capacity corresponding to a predetermined life for the fuel filter.

  The present invention provides a fuel supply device for a vehicle in which a fuel pump for supplying fuel in a fuel tank to the engine side through a fuel supply pipe is provided, and a fuel filter for filtering the fuel from the fuel pump is provided in the middle of the fuel supply pipe The fuel supply pipe extends from the fuel pump along the longitudinal side surface of the fuel tank, and at least two fuel filters are provided in parallel on the fuel supply pipe.

  According to the present invention, the fuel filter can be reduced in size and disposed outside the fuel tank to facilitate maintenance and inspection of the fuel filter. Also, by mounting at least two fuel filters, the fuel filter has a predetermined life. The capacity corresponding to can be secured.

FIG. 1 is a partial perspective view of a fuel tank provided with a fuel supply device. (Example) FIG. 2 is a plan view of the rear portion of the vehicle. (Example) FIG. 3 is a right side view of the fuel tank of FIG. (Example) FIG. 4 is a front view of the clamp holding the fuel filter. (Modification)

  The present invention reduces the size of the fuel filter and arranges it around the fuel tank to facilitate maintenance of the fuel filter, and by mounting at least two fuel filters, the fuel filter has a capacity corresponding to a predetermined life. It achieves the purpose of doing.

1 to 3 show an embodiment of the present invention.
1 and 2, reference numeral 1 denotes a vehicle having an engine mounted on the front thereof, and 2 denotes a vehicle body. The vehicle body 2 has a right side frame 3 that extends in the vehicle front-rear direction X, a left side frame 4 that is parallel to the right side frame 3 and extends in the vehicle front-rear direction X, and the right side frame 3 and the left side frame 4 And a rear cross member 5 that extends in the vehicle left-right direction Y. A right rear wheel 6 is disposed on the right side of the right side frame 3, and a left rear wheel 7 is disposed on the left side of the left side frame 4.
A fuel supply device 8 is mounted on the vehicle 1. The fuel supply device 8 includes a fuel tank 9 whose longitudinal direction extends in the vehicle left-right direction Y between the right side frame 3 and the left side frame 4.
As shown in FIGS. 2 and 3, the fuel tank 9 is disposed in the vicinity of the cross member 5 and in front of the cross member 5, and includes an upper surface portion 10, a lower surface portion 11, a front surface portion 12, and a rear surface portion 13. It consists of a right side surface portion 14 and a left side surface portion 15.

An upper portion of a fuel pump 17 that projects the fuel in the fuel tank 9 to the engine side through the fuel supply pipe 16 projects from the right end of the upper surface portion 10 of the fuel tank 9. The main body of the fuel pump 17 is installed in the fuel tank 9.
A supply side rise pipe 18 and a return side rise pipe 19 are erected on the upper portion of the fuel pump 17.
A supply side connector 20 made of resin is attached to the supply side riser pipe 18. The supply-side connector 20 includes a supply-side attachment portion 21 attached to the supply-side riser pipe 18 and a supply-side connection portion 22 at the tip.
A fuel regulator arranged in the fuel tank 9 is connected to the return side riser pipe 19 and a return side connector 23 made of resin is connected to the return side rise pipe 19. The return-side connector 23 includes a return-side attachment portion 24 attached to the return-side riser 19, and a return-side inflow connection portion 25 and a return-side outflow connection portion 26 branched at the tip.

As shown in FIGS. 1 and 2, around the fuel tank 9, a fuel supply pipe 16 from the fuel pump 17 extends along the rear surface portion 13 (longitudinal side surface) of the fuel tank 9, and in this way The routed fuel supply pipe 16 is provided with a first fuel filter 27 and a second fuel filter 28 in parallel as at least two fuel filters.
The first fuel filter 27 and the second fuel filter 28 are efficiently disposed in a limited space around the fuel tank 9, and the rear surface side of the fuel tank 9, that is, the rear surface portion of the fuel tank 9. 13 are attached to the cross member 5 in parallel at the rear of the vehicle.
As described above, the fuel supply pipe 16 and the first and second fuel filters 27 and 28 are efficiently disposed in a limited space around the fuel tank 9 so that the capacity of the fuel tank 9 is not reduced. A fuel filter can be provided on the front panel.
In addition, since the first fuel filter 27 and the second fuel filter 28 are disposed outside the fuel tank 9, the replacement work of the first fuel filter 27 and the second fuel filter 28 and the like can be easily performed and maintained. Inspection can be done easily.
Further, the first fuel filter 27 and the second fuel filter 28 are downsized as compared with a single fuel filter, but the total capacity is configured to have a capacity corresponding to a predetermined life. Thereby, the pressure rise of the fuel by dust capture can be controlled.
Furthermore, the first fuel filter 27 and the second fuel filter 28 can be adjusted to the same capacity or different capacity sizes according to the surrounding space, and each can be configured to have a capacity corresponding to a predetermined life. Good. Thereby, even when one fuel filter of the 1st fuel filter 27 and the 2nd fuel filter 28 fails, it can be made to cope with the other fuel filter.
Note that two or more fuel filters may be provided around the fuel tank 9.

The first fuel filter 27 is disposed on the rear surface side of the right end of the fuel tank 9 and is held by the cross member 5 by the first clamp 29. The first clamp 29 holds the first fixing plate 31 connected to the cross member 5 by the first bolt 30 so as to support the lower portion of the first fuel filter 27 and the upper portion of the first fuel filter 27. The first curved plate 32 is attached to the first fixed plate 31.
Thus, since the first fuel filter 27 is installed on the first clamp 29 fixed to the cross member 5 on the rear surface side of the fuel tank 9, the first fuel filter 27 can be handled easily and the first The fuel filter 27 can be protected from stepping stones.
The second fuel filter 28 is disposed on the rear side of the center side of the fuel tank 9 and is held by the cross member 5 by the second clamp 33. The second clamp 33 has a second fixing plate 35 connected to the cross member 5 by a second bolt 34 so as to support the lower portion of the second fuel filter 28, and a second fixing plate 35 so as to hold the upper portion of the second fuel filter 28. 2 and a second curved plate 36 attached to the fixed plate 35.
As described above, since the second fuel filter 28 is installed on the second clamp 33 fixed to the cross member 5 on the rear surface side of the fuel tank 9, the second fuel filter 28 can be handled easily and the second The fuel filter 28 can be protected from stepping stones.
The first and second fuel filters 27 and 28 are easily installed on the cross member 5 in the vehicle left-right direction Y.

The first fuel filter 27 includes a first inlet portion 37 and a first outlet portion 38.
A resin-made first inlet side connector 39 having a branching portion that branches the fuel supply pipe 16 in two directions into the first fuel filter 27 side and the second fuel filter 28 side is attached to the first inlet portion 37. The first inlet-side connector 39 includes a first inlet-side attachment portion 40 attached to the first inlet portion 37, a first inlet-side inflow connection portion 41 and a first inlet-side outflow connection portion 42 branched at the tip. .
A resin-made first outlet side connector 43 having a joining portion for joining the fuel supply pipes 16 branched to the first fuel filter 27 side and the second fuel filter 28 side is attached to the first outlet portion 38. The first outlet-side connector 43 includes a first outlet-side attachment portion 44 attached to the first outlet portion 38, and a first outlet-side inflow connection portion 45 and a first outlet-side outflow connection portion 46 branched at the tip. .

The second fuel filter 28 includes a second inlet portion 47 and a second outlet portion 48.
A resin-made second inlet side connector 49 is attached to the second inlet portion 47. The second inlet side connector 49 includes a second inlet side attachment portion 50 attached to the second inlet portion 47 and a second inlet side connection portion 51 at the tip.
A second outlet-side connector 52 made of resin is attached to the second outlet portion 48. The second outlet side connector 52 includes a second outlet side attachment portion 53 attached to the second outlet portion 48 and a second outlet side connection portion 54 at the tip.

The fuel supply pipe 16 is connected to the fuel pump 17, the first fuel filter 27, and the second fuel filter 28.
The fuel supply pipe 16 is a plastic hollow member that can be bent, and is composed of divided first to fifth fuel supply pipes 16A to 16E, which will be described later, and is arranged around the fuel tank 9, that is, The fuel tank 9 is routed along the rear surface side (longitudinal side surface) of the fuel tank 9 around the fuel pump 17 on the upper surface 10 of the fuel tank 9 and at a position lower than the upper portion of the fuel pump 17.

That is, the upper surface portion of the fuel tank 9 is connected to the supply side connection portion 22 of the supply side connector 20 of the fuel pump 17 and the first inlet side inflow connection portion 41 of the first inlet side connector 39 attached to the first fuel filter 27. A first fuel supply pipe 16A that is routed to 10 and extends rearward of the vehicle is connected.
The first inlet side outflow connection portion 42 of the first inlet side connector 39 attached to the first fuel filter 27 and the second inlet side connection portion 51 of the second inlet side connector 49 attached to the second fuel filter 28 include: A second fuel supply pipe 16B extending toward the vehicle center side along the rear surface portion 13 of the fuel tank 9 is connected.
The second outlet side connection portion 54 of the second outlet side connector 52 attached to the second fuel filter 28 and the first outlet side inflow connection portion 45 of the first outlet side connector 43 attached to the first fuel filter 27 include: A third fuel supply pipe 16C extending to the right of the vehicle along the rear surface portion 13 of the fuel tank 9 is connected.
A fuel tank is provided between the first outlet side outflow connection portion 46 of the first outlet side connector 43 attached to the first fuel filter 27 and the return side inflow connection portion 25 of the return side connector 23 attached to the return side riser pipe 19. 9 is connected to a fourth fuel supply pipe 16D that is routed to the right end of the upper surface portion 10 and extends forward of the vehicle.
As shown in FIG. 3, the return side outflow connection portion 26 of the return side connector 23 attached to the return side riser pipe 19 extends forward and downward in the vehicle at the right end of the fuel tank 9, and sends fuel to the engine side. A fifth fuel supply pipe 16E that leads is connected.
Intermediate portions of the second fuel supply pipe 16 </ b> B and the third fuel supply pipe 16 </ b> C are integrally held on the rear surface portion 13 of the fuel tank 9 by a holding member 55. The holding member 55 holds the second fuel supply pipe 16B and the third fuel supply pipe 16C and prevents their swinging.
Here, the flow of fuel will be described.
The fuel discharged from the fuel pump 17 reaches the first inlet-side connector 39 through the first fuel supply pipe 16A, branches off at the first inlet-side connector 39, and the first fuel filter 27, the second fuel filter 28, and the like. Flow into.
The fuel flowing out after being filtered by the first and second fuel filters 27, 28 flows to the first outlet side connector 43, joins at the first outlet side connector 43, and then returns to the fuel pump 17. It flows to the connector 23.
Further, part of the fuel that has flowed to the return side connector 23 returns to the fuel tank via the return side riser pipe 19 for fuel pressure adjustment, while the other part is supplied to the engine via the fifth fuel supply pipe 16E. Is done.

The connectors 20, 23, 39, 43, 49, 52 are integrally fixed to the first to fifth fuel supply pipes 16 </ b> A to 16 </ b> D in advance, and the fuel pump 17 and the first and second fuel filters 27. , 28 with one touch.
Further, the connectors 23, 39, and 43 are integrally provided with a branching portion or a merging portion of the fuel supply pipe 16, thereby integrating the fuel supply pipes 16A and 16B and the fuel supply pipes 16C, 16D, and 16E, respectively. And the workability of connecting the fuel supply pipe 16 is improved.
Further, before the fuel tank 9 is mounted on the vehicle 1, the first and second filters 27 and 28 are connected in advance to the fuel pump 17 attached to the fuel tank 9 via the first to fifth fuel supply pipes 16 </ b> A to 16 </ b> D. Then, after the fuel tank 9 is mounted on the vehicle 1, the first to fifth fuel supply pipes 16 </ b> A to 16 </ b> D are slightly bent to attach the first and second filters 27 and 28 to the cross member 5. The filter assembly work is completed.
Therefore, the wiring work can be facilitated, the fuel supply pipe can be simplified and the space can be saved, and the first to fifth fuel supply pipes 16A to 16D can be easily handled. Maintenance and inspection of the fuel filters 27 and 28 can be facilitated, and the first to fifth fuel supply pipes 16A to 16D can be easily branched.

  In the present invention, as shown in FIG. 4, the clamp 57 that holds the fuel filter 56 includes a one-side spring plate 58 and an other-side spring plate 59 that are curved and elastically deformable. The clamp 57 is attached to the cross member 5, and the one-side spring plate 56 and the other-side spring plate 57 are elastically deformed, so that the fuel filter 56 can be attached and detached with a one-touch type. As a result, the fuel filter 56 can be easily attached and detached, and the maintenance and inspection of the fuel filter 56 is further facilitated.

  The fuel supply apparatus according to the present invention can be applied to various vehicles.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 8 Fuel supply apparatus 9 Fuel tank 16 Fuel supply pipe 16A 1st fuel supply pipe 16B 2nd fuel supply pipe 16C 3rd fuel supply pipe 16D 4th fuel supply pipe 16E 5th fuel supply pipe 17 Fuel pump 20 Supply Side connector 23 return side connector 27 first fuel filter 28 second fuel filter 29 first clamp 33 second clamp 39 first inlet side connector 43 first outlet side connector 49 second inlet side connector 52 second outlet side connector

Claims (3)

  In the fuel supply apparatus for a vehicle, provided with a fuel pump for supplying fuel in the fuel tank to the engine side through a fuel supply pipe, and provided with a fuel filter for filtering fuel from the fuel pump in the middle of the fuel supply pipe, the fuel A fuel supply apparatus for a vehicle, wherein the fuel supply pipe extending from the pump extends along a longitudinal side surface of the fuel tank, and at least two fuel filters are provided in parallel on the fuel supply pipe.   The vehicle fuel supply device according to claim 1, wherein the two fuel filters are attached to a cross member of a vehicle body adjacent to the fuel tank.   2. The fuel supply pipe according to claim 1, wherein the fuel supply pipe is connected to the fuel filter via a resin connector, and a branch portion and a merging portion of the fuel supply pipe are integrally formed in the connector. Vehicle fuel supply device.

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