JP2021102954A - Fuel supply device for vehicle - Google Patents

Abstract

To effectively suppress tilting of a fuel supply device in accompany with inclination and to miniaturize a fuel tank even in a fuel supply device in which a blocking surface of a lid is inclined to a horizontal surface in a blocking state of a tank opening portion by the lid, in a fuel supply device for a vehicle in which a fuel pump is held by a housing in a manner that its axis is substantially in parallel with the blocking surface of the lid.SOLUTION: A blocking surface 80 of a lid 8 is disposed in a state of being inclined to a horizontal surface in view of a projection surface orthogonal to a pump axis Lp in a blocking state of a tank opening portion 7 by the lid 8. A housing 20 supported by the lid 8 and holding a fuel pump P has a communication passage 32 for communicating a pump discharge portion Pco and a fuel outlet pipe 8a of the lid 8, and the communication passage 32 has an inclined passage portion 32v inclined to an upper end side of the blocking surface 80 with respect to a reference line Lx orthogonal to the blocking surface 80 in view of the projection surface orthogonal to the pump axis Lp.SELECTED DRAWING: Figure 1

Description

The present invention has a fuel supply device, particularly a lid having a fuel outlet pipe exposed to the outside of the fuel tank to close the opening of the fuel tank, an suction portion on one side in the axial direction, and a discharge portion on the other side. It comprises a fuel pump and a housing that is supported by a lid and extends into the fuel tank and holds the fuel pump. The housing has a communication passage for communicating between a discharge portion and a fuel outlet pipe, and the lid is a lid. The present invention relates to a fuel supply device for a vehicle having a closed surface that is parallel to the peripheral edge of the opening and is in liquid-tight contact with the peripheral portion of the opening in a closed state of the opening.

The above-mentioned fuel supply device is conventionally known as disclosed in, for example, Patent Document 1, and the fuel pump of the above-mentioned fuel pump is held in the above-mentioned housing so that the axis of the fuel pump thereof is substantially parallel to the above-mentioned closing surface of the lid. As a result, the fuel pump (hence, the housing) long in the axial direction can be arranged almost along the wall surface of the fuel tank, and can be deployed reasonably and compactly even in the relatively narrow internal space of the fuel tank.

Japanese Unexamined Patent Publication No. 2019-19722

In the fuel supply device of Patent Document 1, the communication passage provided in the housing and communicating between the pump discharge portion and the fuel outlet pipe of the lid is in contact with the horizontal closing surface of the lid (hence, the closing surface is liquidtight). , The horizontal bottom wall of the tank around the opening) extends in the direction perpendicular to it, that is, in the vertical direction.

Therefore, if such a communication passage structure is applied as it is to a fuel tank in which the tank bottom wall portion is inclined with respect to the horizontal plane (see, for example, FIG. 5), the communication passage is oblique with respect to the inclined closed surface of the lid. The arrangement is such that it extends upward for a long time, and as a result, the upper end of the fuel supply device tilted with respect to the vertical plane passing through the center of the lid protrudes laterally from the lid to a considerable extent. Therefore, in order to avoid the upper end of the fuel supply device overhanging in the lateral direction, it is necessary to overhang the corresponding outer wall of the fuel tank outward, which is inconvenient for the fuel tank to become large.

The present invention has been proposed in view of the above, and even in a fuel supply device in which the closed surface of the lid is inclined with respect to the horizontal plane in a closed state of the tank opening by the lid, the closed surface of the fuel supply device is laterally arranged. An object of the present invention is to provide a fuel supply device for a vehicle, which can effectively suppress overhang and contribute to the miniaturization of a fuel tank.

In order to achieve the above object, the present invention has a lid having a fuel outlet pipe exposed to the outside of the fuel tank to close the opening of the fuel tank, a suction portion on one side in the axial direction, and a discharge portion on the other side. Each of the fuel pumps is provided with a housing that is supported by the lid and extends into the fuel tank and holds the fuel pump, and the housing is a communication passage that communicates between the discharge portion and the fuel outlet pipe. The lid has a closed surface that is parallel to and in liquid-tight contact with the peripheral edge of the opening in a closed state of the opening by the lid, and the fuel pump has an axis thereof. In a vehicle fuel supply device held in the housing so as to be substantially parallel to the closed surface, the closed surface is a horizontal plane when viewed from a projection plane orthogonal to the axis in a closed state of the opening by the lid. The first feature is that the communication passage is arranged so as to be inclined with respect to the closed surface, and the continuous passage has an inclined passage portion inclined to the upper end side of the closed surface with respect to a reference line orthogonal to the closed surface when viewed from the projected surface. And.

Further, in addition to the first feature, the present invention further includes a filter connected to the suction portion, and the fuel tank has a bottom wall portion parallel to the closing surface or the closing at least around the opening. It has a side wall that is parallel to the surface and faces the center of the vehicle, and the opening is provided in the bottom wall or the side wall, and the filter is from the axis when viewed from the projection surface. The second feature is that the fuel is offset on the lower end side of the closed surface.

Further, in the present invention, in addition to the first or second feature, a pressure regulator that regulates the upper limit of the discharge oil pressure of the fuel pump is held in the housing, and the pressure regulator is said to be via the inclined passage portion. The third feature is that the fuel pump is connected to the discharge portion and is arranged on one side or the other side of the fuel pump in the axial direction of the inclined passage portion when viewed from the projection surface.

Further, in the present invention, in addition to any of the first to third features, the lid has a power feeding coupler that is used for power supply to the fuel pump and extends out of the fuel tank, and the fuel tank has a power supply coupler. , The vehicle body has an intermediate tank portion that straddles the main frame extending in the front-rear direction through the center of the vehicle and a pair of side tank portions that hang integrally from the left and right sides of the intermediate tank portion, and is formed in a substantially saddle shape. The fourth feature is that the opening is provided in the bottom wall portion inclined outwardly downward or the side wall portion on the vehicle center side of any one of the side tank portions.

According to the first feature, the closed surface of the lid is arranged so as to be inclined with respect to the horizontal plane when viewed from the projection plane orthogonal to the pump axis in the closed state of the opening of the fuel tank, and is provided in the housing to provide fuel. The communication passage that communicates between the discharge portion of the pump and the fuel outlet pipe of the lid has an inclined passage portion that is inclined toward the upper end side of the closing surface with respect to the reference line orthogonal to the closing surface when viewed from the projection surface. As a result, even if the closed surface of the lid is inclined with respect to the horizontal plane, the fuel supply device is tilted due to this inclination, that is, the fuel supply device is laterally extended with reference to the position of the lid (thus, the same as the fuel tank). Since the overhang in the direction is effectively suppressed, it is advantageous in reducing the size of the fuel tank, and the fuel supply device can be easily deployed in the small fuel tank.

According to the second feature, the filter connected to the suction portion of the fuel pump is offset from the pump axis to the lower end side of the closed surface when viewed from the projection plane orthogonal to the pump axis. The filter can be displaced to the lower side of the bottom wall or side wall that is inclined downward. As a result, even when the amount of liquid in the tank becomes low, the fuel pump can suck fuel through the filters unevenly distributed on the lower side.

Further, according to the third feature, the pressure regulator held in the housing is connected to the discharge portion via the inclined passage portion, and is one of the fuel pumps in the axial direction of the inclined passage portion when viewed from the projection plane. Since it is arranged on the side or the other side, the pressure regulator and the fuel pump are arranged so as to be aligned in the axial direction of the inclined passage portion, so that the total height of the housing (hence, the fuel supply device) that holds them becomes high. .. However, since the tilting of the fuel supply device, that is, the lateral extension is suppressed based on the first feature described above, even if the fuel tank is miniaturized, the fuel supply device having a high overall height can be easily deployed in the fuel tank. ..

According to the fourth feature, the lid has a power supply coupler that extends out of the fuel tank, and the fuel tank has an intermediate tank portion that straddles the main frame passing through the center of the vehicle body and both left and right sides of the intermediate tank portion. It is formed in a saddle shape with a pair of side tank parts that hang down more integrally, and on one side tank part, on the bottom wall part that is inclined outward and downward or on the side wall part on the vehicle center side. Since the opening is provided, the lid that closes the opening and the fuel outlet pipe and power supply coupler that overhang from the opening are effectively shielded by the outer wall of the fuel tank. As a result, these lids, fuel outlet pipes, and power supply couplers are effectively protected from collisions with other objects, and are also aesthetically concealed by the fuel tank to improve the appearance of the product.

The state in which the fuel supply device according to the embodiment of the present invention is attached to the fuel tank is shown, and (A) is a vertical sectional view of a main part of the fuel tank (a sectional view taken along line 1A-1A of FIG. 1 (B)). ) And (B) are cross-sectional views of the main part of the fuel tank (cross-sectional view taken along line 1B-1B of FIG. 1 (A)). Partial rupture rear view of the fuel supply device as viewed from the rear of the vehicle (enlarged view of partial rupture of the 2 arrow view portion of FIG. 3 arrow view of Fig. 2 Partially broken front view of the fuel supply device as viewed from the front of the vehicle (4 arrow view in FIG. 3) FIG. 2 correspondence diagram showing a comparative example

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

First, in FIGS. 1 to 4, a fuel pump that pressurizes the fuel in the fuel tank T and supplies it to the fuel injection valve of the in-vehicle engine at the bottom of the fuel tank T mounted on a saddle-riding vehicle, for example, a motorcycle. The module FM is installed.

In the present embodiment, the fuel tank T fixed at an appropriate position on the vehicle body is an intermediate tank portion Tm straddling the main frame 6 extending horizontally or backward and downward in the front-rear direction through the center of the vehicle body, and both left and right sides of the intermediate tank portion Tm. It has a pair of side tank portions Ts and Ts' that hang down more integrally, and is formed in a substantially saddle shape. That is, the tank wall surface of the fuel tank T facing the vehicle body space through which the main frame 6 passes is formed in an inverted U shape in cross section.

The bottom wall portion 11 of the left and right side tank portions Ts is provided with an opening 7 formed in an oval shape that is long in the front-rear direction, and the lid 8 of the fuel pump module FM closes the opening 7. It is attached to the bottom wall portion 11. The bottom wall portion 11 is inclined outward and downward with respect to the horizontal plane when viewed in the cross section of the fuel tank T (more specifically, outward and downward with respect to the vertical plane passing through the center of the vehicle in the front-rear direction). (Inclined).

The left and right width of the bottom wall portion 11'of the other side tank portion Ts'is formed to be narrow, and accordingly, the side wall portion 12 facing the vehicle center (and therefore the main frame 6) side is based on the vertical plane. It is inclined outward and downward and extends to the bottom wall portion 11'. As will be described later, the fuel pump module FM may be attached by providing an opening 7 at the lower portion of the inclined side wall portion 12.

The fuel pump module FM is detachably connected to the bottom wall portion 11 to form an oval lid 8 that liquidally closes the opening 7 of the bottom wall portion 11, and is coupled to and supported by the lid 8 to provide a fuel tank. A housing 20 extending in T, an electric pump unit P housed and held in the housing 20, a filter 40 connected to the suction side of the pump unit P, and a pump unit provided in the housing 20. It is provided with a pressure regulator R that regulates the discharge oil pressure of P to a predetermined upper limit or less. Thus, the fuel pump module FM is an example of the fuel supply device of the present invention, and the pump unit P is an example of the fuel pump of the present invention.

The pressure regulator R is normally held in a closed state, and when the discharge oil pressure of the pump unit P exceeds a set value, the pressure regulator R is configured to open the valve at that pressure and return a part of the discharged oil to the fuel tank T. , Its function is the same as that of a conventionally known pressure regulator.

The pump unit P is incorporated in a cylindrical unit case Pc that extends substantially along the bottom wall portion 11 in the front-rear direction of the vehicle, a pump portion (not shown) incorporated in the unit case Pc, and the unit case Pc. A motor unit (not shown) for driving the pump unit is provided. The unit case Pc has a fuel suction portion Pci on one side in the axial direction thereof and a fuel discharge portion Pco on the other side, and the axis Lp of the pump unit P is a bottom wall portion around the opening 7. It is arranged substantially parallel to 11 (hence, the closing surface 80 of the lid 8 described later).

The lid 8 is formed to be larger than the opening 7 of the bottom wall portion 11 and has a flat plate-shaped lid body 8 m that covers the opening 7 from the outside, and a fuel tank that is integrally projected from the lid body 8 m and passes through the opening 7. It is provided with a mounting base portion 8b that projects into the T (particularly the side tank portion Ts), and is fastened to the bottom wall portion 11 by a plurality of bolts 24. Each of the bolts 24 penetrates the lid body 8 m around the mounting base portion 8b and is screwed into the bag nut 11n fixed to the inner surface of the bottom wall portion 11.

The back surface of the lid body 8 m around the mounting base portion 8b is parallel to the peripheral edge portion of the opening 7 in a closed state by the lid 8, and is in liquid-tight contact with the seal member 25. , Consists of the closed surface 80 of the present invention. Then, in the closed state, the closed surface 80 is outwardly lower side with respect to the horizontal plane when viewed from the projection plane (see FIGS. 2 and 4) orthogonal to the axis Lp of the pump unit P, similarly to the bottom wall portion 11 described above. The layout is inclined to.

The seal member 25 is housed and held in a seal groove 80a recessed in the closing surface 80, and the seal groove 80a is recessed in the closing surface 80 so as to bypass the bolt 24.

Further, on the outer surface of the lid body 8 m, the fuel outlet pipe 8a used for taking out the discharged fuel from the pump unit P and the power supply coupler 8c used for supplying power to the pump unit P are both extended to the outside of the fuel tank T. (In this embodiment, the synthetic resin is integrally molded). Although not shown, the fuel outlet pipe 8a can be connected to an external pipe connected to the fuel injection valve of the engine, and the power supply coupler 8c fixes the power supply terminal 29 leading to the motor portion of the pump unit P and electronically connects it. It can be connected to the external wiring connected to the control device.

The housing 20 is attached to and detached from the housing base 21 that is detachably joined to the mounting base portion 8b of the lid 8, the housing main portion 22 that is integrally connected to the housing base 21, and the housing main portion 22. It includes an end block 23 that can be coupled. In this embodiment, snap-fit type engaging structures J1 and J2 are adopted as the coupling structure between the mounting base portion 8b and the housing base 21 and between the housing base 21 and the end block 23, and the engaging structures thereof are adopted. The structures J1 and J2 have, for example, a locking claw provided on one side of each other and a locking hole provided on the other side of each other so as to be engaged with and elastically engaged with the locking claw. Have.

At least one of the snap-fit type engaging structures J1 and J2 may be replaced with another coupling structure (for example, a screwing structure, a crimping coupling structure, an adhesive structure, etc.).

The housing main portion 22 includes a first holding portion 221 that holds the pump unit P in cooperation with the end block 23, a second holding portion 222 that holds the pressure regulator R, both holding portions 221, 222, and a housing. It includes a connecting wall portion 223 that integrally connects the body base portions 21 to each other. The first holding portion 221 includes a front wall portion 221f that supports the front end portion of the pump unit P, and a pair of upper and lower gripping arm portions 221a that extend rearward from the front wall portion 221f and hold the pump unit P from above and below. It has 221b and.

By the way, the fuel outlet pipe 8a of the lid 8 has a pump unit P via a first communication passage 31 passing through the wall of the lid 8 and a second communication passage 32 passing through the walls of the housing base portion 221 and the connecting wall portion 223. It communicates with the discharge part Pco of the above and the pressure receiving part of the pressure regulator R. The inner end, that is, the upstream end of the first passage 31, opens to the end surface of the mounting base portion 8b of the lid 8.

Further, in the second communication passage 32, a vertical passage portion 32v in which a downstream end opens on the lower surface of the housing base 21 and rises linearly upward from the opening, and a discharge portion Pco of the pump unit P communicate with the vertical passage portion 32v. It has a first horizontal passage portion 32h1 to be made to communicate and a second horizontal passage portion 32h2 to communicate the pressure receiving portion of the pressure regulator R with the vertical passage portion 32v, and the downstream end of the vertical passage portion 32v becomes the first communication passage 31. Communicate directly.

As is clear from FIG. 4, the vertical passage portion 32v is defined on the upper end side of the closing surface 80 with respect to the reference line Lx orthogonal to the closing surface 80 of the lid 8 when viewed from the projection plane orthogonal to the axis Lp of the pump unit P. It is inclined and extended by the inclination angle θ of the above, and constitutes the inclined passage portion of the present invention. The inclination angle θ is such that the axis Z of the vertical passage portion 32v as the inclined passage portion is substantially vertically perpendicular to the lid 8 (mounting base portion 8b) when viewed from the projection surface (thus, on the outer wall 100 of the side tank portion Ts). It is set to extend (almost along).

Next, an example of the end block 23 will be described mainly with reference to FIGS. 2 to 4. The end block 23 has a function as an end wall for closing the rear open end of the first holding portion 221 in the housing main portion 22 to prevent the pump unit P from coming out of the first holding portion 221 and housing the filter 40. It also has a function as a filter mounting frame to be supported by the body 20.

That is, the end block 23 has a block main body 23m that covers the rear end of the pump unit P held by the first holding portion 221 as a main part, and the block main body 23m is the first in the upper and lower portions of the front end portion thereof. It has upper and lower insertion holes 23ma and 23mb through which the gripping arm portions 221a and 221b of the holding portion 221 are inserted, respectively, and extends in the front-rear direction. Then, the snap-fit type engaging structure J2 described above is provided between the outer peripheral surface of the block body 23 m and the bifurcated tip (rear end) of each of the gripping arms 221a and 221b.

Further, a mounted portion 40a (see FIG. 2) of the filter 40 is coupled to one side surface of the rear portion of the block body 23 m. The filter 40 is configured by accommodating a filter medium in a flexible outer skin formed of, for example, a net material in a flat bag shape, and an attached portion 40a communicating with the inside of the filter medium is joined to one side surface of the outer skin. The attached portion 40a may be detachably connected to the block main body 23m, or may be detachably connected to the block body 23m.

Further, the block body 23m is from the rear end surface of the block body 23m corresponding to the internal oil passage 23mp that communicates the suction portion Pci of the pump unit P with the fuel outlet of the filter 40 and the rear end bending portion of the internal oil passage 23mp. It is provided with an overhanging bulge portion 23 mc, and the bulge portion 23 mc is joined to the attached portion 40a.

By the way, as is clear from FIGS. 2 and 4, when viewed from the projection plane orthogonal to the axis Lp of the pump unit P, the filter 40 is located on the lower end side of the closed surface 80 of the lid 8 (left side in FIG. 2) with respect to the axis Lp. Is offset to. Further, the pressure regulator R is arranged as an inclined passage portion on one side (upper side in the illustrated example) of the pump unit P in the axial direction of the vertical passage portion 32v. The positional relationship between the pressure regulator R and the pump unit P may be upside down from that of the present embodiment, and the pressure regulator R may be arranged below the pump unit P in the axial direction of the vertical passage portion 32.

Further, the lid 8 is provided with a plurality of connection portions (not shown) leading to the power supply terminal 29 described above. Although not shown, wiring extending from the motor portion of the pump unit P is detachably connected to these connection portions, and wiring extending from the liquid level sensor attached to the lid 8 or the housing 20 is detachably connected as needed. Can be connected.

Next, the operation of the embodiment will be described. In the fuel pump module FM, in the present embodiment, the housing 20 that is supported by the lid 8 and holds the pump unit P communicates between the pump discharge portion Pco and the fuel outlet pipe 8a of the lid 8. The lid 8 has a closed surface 80 that is parallel to the peripheral edge of the opening 7 and is in liquid-tight contact with the seal member 25 in a closed state by the lid 8 of the opening 7 of the fuel tank T. The pump unit P is held in the housing 20 so that the pump axis Lp extends in the front-rear direction and is substantially parallel to the closing surface 80. The closed surface 80 of the lid 8 is inclined outward and downward with respect to the horizontal plane when viewed from a projection surface (particularly see FIG. 4) orthogonal to the pump axis Lp in the closed state, and the housing 20 The second continuous passage 32 inside has a vertical passage portion 32v as an inclined passage portion inclined toward the upper end side of the closing surface 80 with respect to the reference line Lx orthogonal to the closing surface 80 when viewed from the projection plane.

As a result, the closed surface 80 of the lid 8 is tilted with respect to the horizontal plane in the closed state of the opening 7, but the fuel pump module FM is tilted due to the tilt, that is, the fuel pump module FM is tilted with reference to the position of the lid 8. Lateral overhang (and therefore outward overhang of the fuel tank T) is effectively suppressed. Therefore, it is extremely advantageous in reducing the size of the fuel tank T, and the fuel pump module FM can be reasonably deployed in the small fuel tank T.

On the other hand, in the fuel pump module FM "of the comparative example shown in FIG. 5, the second communication passage 32v" is perpendicular to the inclined closed surface 80 of the lid 8 in the direction perpendicular to the direction (that is, the vertical surface Lv passing through the center of the lid 8). The upper end of the fuel supply device FM "inclined with respect to the vertical Lv protrudes laterally from the lid 8 due to the long extension (inclining outward and upward). In order to avoid the upper end of the fuel supply device FM ″ overhanging in the lateral direction, it is necessary to extend the corresponding outer wall 100 ″ of the side tank portion Ts ″ to the outside, and the fuel tank T ″ becomes larger accordingly. That is, if the width of the side tank portion Ts "of the comparative example is W2 and the width of the side tank portion Ts of the present embodiment is W1, then W2> W1.

Further, in the present embodiment, the filter 40 connected to the suction portion Pci of the pump unit P is located on the lower end side of the closed surface 80 with respect to the pump axis Lp when viewed from the projection plane (see FIGS. 2 and 4) orthogonal to the pump axis Lp. Is offset to. As a result, the filter 40 is displaced to the lower side of the bottom wall portion 11 inclined outwardly downward of the fuel tank T, so that even if the amount of fuel oil in the side tank portion Ts is reduced, the pump unit P can suck fuel through the filter 40 which is unevenly distributed on the lower side.

Further, in the present embodiment, the pressure regulator R and the pump unit P held in the housing 20 are arranged so as to be arranged in the axial direction of the vertical passage portion 32v when viewed from the projection surface, so that the housing 20 and thus the fuel Although the overall height of the pump module FM becomes high, in the present embodiment, the fuel tank T is made smaller because the tilting (that is, lateral overhang) of the fuel pump module FM is suppressed based on the above-mentioned tilting arrangement effect of the vertical passage portion 32v. Even if the fuel pump module FM has a high overall height, it can be easily deployed in the fuel tank T.

Further, the fuel tank T of the present embodiment has an intermediate tank portion Tm straddling the main frame 6 passing through the center of the vehicle body, and a pair of side tank portions Ts and Ts' hanging from both the left and right sides of the intermediate tank portion Tm. In addition to being formed in a saddle shape, an opening 7 is provided in the bottom wall portion 11 of one side tank portion Ts that is inclined outward and downward to install the fuel pump module FM. The lid 8 that closes the 7 and the fuel outlet pipe 8a and the power supply coupler 8c that project from the lid 8 are effectively shielded by the outer wall of the fuel tank T, particularly the pair of side tank portions Ts and Ts'. As a result, the lid 8, the fuel outlet pipe 8a, and the power feeding coupler 8c are effectively protected from collisions with other objects, and are also aesthetically concealed by the fuel tank T to improve the aesthetic appearance of the product.

By the way, in the above-described embodiment, the fuel pump module FM is installed by providing the opening 7 in the bottom wall portion 11 inclined to the outer lower side of the side tank portion Ts. On the other hand, although not shown, when the side wall portion 12 of the side tank portion Ts' facing the vehicle center side is inclined outward and downward, an opening 7 is provided in the side wall portion 12. A fuel pump module FM may be installed. Even in that case, the point that the vertical passage portion 32v as the inclined passage portion is inclined in a specific direction with respect to the reference line Lx is the same as that of the above-described embodiment.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes are made without departing from the present invention described in the claims. Is possible.

For example, in the above embodiment, the fuel pump module FM is installed on the inclined bottom wall portion 11 or the side wall portion 12 of the saddle-shaped fuel tank T straddling the main frame 6, but the present invention is not saddle-shaped. A fuel pump module FM as a fuel supply device may be installed on the inclined bottom wall portion or side wall portion of the fuel tank.

Further, in the above embodiment, the lid 8 is directly screwed to the bottom wall portion 11 with a plurality of bolts 24, but a holding piece arranged around the lid 8 and engaging with the outer periphery of the lid 8 is attached to the bottom wall portion. The lid 8 may be fastened to the bottom wall portion 11 by bolting to 11.

FM ... Fuel pump module Lp as a fuel supply device ... Axial line Lx of the pump unit as a fuel pump ... Reference line P ... Pump unit R as a fuel pump ...・ Pressure regulator T ・ ・ ・ ・ ・ Fuel tank Tm ・ ・ ・ ・ Intermediate tank part Ts, Ts ′ ・ ・ Pair of side tank parts 6 ・ ・ ・ Main frame 7 ・ ・ ・ ・ ・ Opening 8 ・ ・・ ・ ・ Lid 8a ・ ・ ・ ・ Fuel outlet pipe 8c ・ ・ ・ ・ Power supply coupler 9 ・ ・ ・ Support case 11 ・ ・ ・ ・ Bottom wall part 12 ・ ・ ・ ・ Side wall part 20 ・ ・ ・ ・ Housing 32・ ・ ・ ・ Second continuous passage 32v as a continuous passage ・ ・ ・ Vertical passage 40 as an inclined passage 40 ・ ・ ・ ・ Filter 80 ・ ・ ・ ・ Closed surface

Claims (4)

A lid (8) having a fuel outlet pipe (8a) exposed to the outside of the fuel tank (T) and closing the opening (7) of the fuel tank (T), and a suction portion (Pci) on one side in the axial direction. A fuel pump (P) having a discharge portion (Pco) on the other side, and a housing (20) supported by the lid (8) and extending into the fuel tank (T) to hold the fuel pump (P). ) And
The housing (20) has a communication passage (32) that communicates between the discharge portion (Pco) and the fuel outlet pipe (8a).
The lid (8) has a closed surface (80) that is parallel to the peripheral edge of the opening (7) and is in liquid-tight contact with the opening (7) in a closed state by the lid (8). And
The fuel pump (P) is a vehicle fuel supply device held in the housing (20) so that its axis (Lp) is substantially parallel to the closed surface (80).
The closed surface (80) is arranged so as to be inclined with respect to the horizontal plane when viewed from the projection plane orthogonal to the axis (Lp) in the closed state of the opening (7) by the lid (8).
The continuous passage (32) has an inclined passage portion (32v) inclined toward the upper end side of the closed surface (80) with respect to a reference line (Lx) orthogonal to the closed surface (80) when viewed from the projected surface. A vehicle fuel supply device characterized by having. A filter (40) connected to the suction unit (Pci) is further provided.
The fuel tank (T) has a bottom wall portion (11) parallel to the closed surface (80) at least around the opening (7), or a vehicle center side parallel to the closed surface (80). It has a side wall portion (12) facing, and the opening (7) is provided in the bottom wall portion (11) or the side wall portion (12).
The vehicle fuel supply according to claim 1, wherein the filter (40) is offset from the axis (Lp) to the lower end side of the closed surface (80) when viewed from the projection surface. apparatus. A pressure regulator (R) that regulates the upper limit of the discharge oil pressure of the fuel pump (P) is held in the housing (20).
The pressure regulator (R) is connected to the discharge portion (Pco) via the inclined passage portion (32v), and the fuel is directed in the axial direction of the inclined passage portion (32v) when viewed from the projection surface. The vehicle fuel supply device according to claim 1 or 2, wherein the pump (P) is arranged on one side or the other side. The lid (8) has a power supply coupler (8c) that is used for power supply to the fuel pump (P) and extends out of the fuel tank (T).
The fuel tank (T) hangs integrally from the intermediate tank portion (Tm) straddling the main frame (6) extending in the front-rear direction through the center of the vehicle body and the left and right sides of the intermediate tank portion (Tm). It has a pair of side tanks (Ts, Ts') and is formed substantially in a saddle shape.
The opening (7) is provided in the bottom wall portion (11) inclined outwardly downward or the side wall portion (12) on the vehicle center side of any one of the side tank portions (Ts, Ts'). The vehicle fuel supply device according to any one of claims 1 to 3, wherein the fuel supply device for a vehicle is characterized in that.

Images