JP2001107807A - Fuel feeding device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively utilize s space by concentrating most of gas fuel pipings and gas fuel feed devices. SOLUTION: In a vehicle on which a plurality of gas containers to store compressed gas fuel is loaded, a vertical power unit is loaded such that it is positioned approximately on the central line in a longitudinal direction of a vehicle. At least one of the containers is disposed between the car body flank part of a vehicle and the vertical power unit and in a state to be deviated to the rear wheel side of a vehicle. A gas fuel piping and an apparatus for feeding gas fuel are situated between the vehicle front side of the gas container and the further rear side of a vehicle than a gas engine being a part of the constituting necessary condition of the vertical power unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel supply apparatus for a vehicle, and more particularly to a fuel supply apparatus for a vehicle that regulates a mounting position of a gas container, a gas fuel pipe, and a gas fuel supply device to effectively use a space. The present invention relates to a fuel supply device.

[0002]

2. Description of the Related Art Some vehicles are equipped with a gas engine using a gaseous fuel such as compressed natural gas (also referred to as "CNG"), a so-called gaseous fuel.

[0003] A gas container (also referred to as a "fuel container" or "cylinder") for storing gas fuel has a rugged structure to withstand a high-pressure state, and is larger than a fuel tank for storing gasoline. Weight.

As a fuel supply device for the vehicle, a pressurized fuel piping structure for a vehicle having a safety system disclosed in Japanese Patent Publication No. Hei 7-108654 and a motor vehicle disclosed in Japanese Patent Application Laid-Open No. 9-291862 and the like are disclosed. There is a piping leak inspection method, an installation structure of a pressurized fuel tank of an automobile disclosed in JP-A-9-300899, and the like.

[0005]

In a conventional vehicle fuel supply system, a main stop valve, a filter and a regulator for shutting off the supply of gaseous fuel from a gas container are mounted on the vehicle body by using separate brackets. I was attached.

As a result, there are the following disadvantages. (1) The assembly state of the main stop valve, filter and regulator becomes complicated. (2) Piping must be performed on the vehicle side, and the posture of the worker at the time of piping is deteriorated, and workability is deteriorated. (3) The bite joint used for the pipe joint of CNG is liable to cause gas leakage, so it is necessary to proceed with great care so as not to cause this leakage, and the workability is poor.

In addition, since the main stop valve, the filter, and the regulator are individually mounted, it is necessary to have a large mounting space, and it is difficult to effectively use the space in the mounting portion, which is disadvantageous in practical use. There is.

[0008]

SUMMARY OF THE INVENTION Therefore, in order to eliminate the above-mentioned inconvenience, the present invention relates to a vehicle equipped with a plurality of gas containers for storing gaseous fuel. At least one of the gas containers is disposed between the vehicle body side portion of the vehicle and the vertically mounted power unit and in a state of being biased toward the rear wheel side of the vehicle. A gas fuel pipe and a gas fuel supply device are arranged between a vehicle front side and a rear side of the vehicle with respect to a gas engine which is a component of the vertical power unit.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION
When mounting a vertical power unit on a vehicle, the power unit is mounted so that it is positioned approximately on the center line in the front-rear direction of the vehicle, and the gas is biased between the side of the vehicle body and the vertical power unit and toward the rear wheel of the vehicle. At least one of the containers is disposed, and a gas fuel pipe and a gas fuel supply device are provided between a vehicle front side of the gas container and a vehicle rear side of a gas engine, which is a part of the vertical power unit. Are arranged to make effective use of space.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

1 to 6 show an embodiment of the present invention. 2 and 3, reference numeral 2 denotes a vehicle equipped with a gas container 24 described below for storing compressed gas fuel.

As shown in FIG. 1, a vertical power unit 4 is mounted on the front side of the vehicle 2 so as to be positioned substantially on the center line C of the vehicle 2 in the front-rear direction.

1 and 2, the vertical power unit 4 comprises a gas engine 6, a transmission 8, a propeller shaft 10 and the like, and as shown in FIGS. The gas engine 6 is disposed below the passenger seat 14 and the transmission 8 is connected to a rear portion of the gas engine 6 on the vehicle, and one end of the propeller shaft 10 is connected to the rear portion of the transmission 8 on the vehicle. The other end of the transmission 8 is disposed so as to be directed to a rear portion of the vehicle.

Reference numeral 16 is a front wheel, 18 is a rear wheel, 20
Is the backseat.

A gas container supporting member (not shown) is provided below the rear seat 20, that is, below the floor panel 22 of the vehicle 2, and is provided below the floor panel 22 of the vehicle 2 via the gas container supporting member. The gas container 24 is fixed by a fixing member (not shown), and an under guard 26 for protecting the fixed gas container 24 is attached to the fixing member.

At this time, the gas container 24 comprises a plurality of, for example, three first to third gas containers 24-1, 24-2,
4-3, and the longitudinal direction of the first and second gas containers 24-1 and 24-2 in the three gas containers 24 is oriented in the width direction of the vehicle 2.

Also, at least one of the gas containers, for example, the third gas container, is disposed between the vehicle body 28 side of the vehicle 2 and the vertical power unit 4 and is biased toward the rear wheel 18 of the vehicle 2.
A gas container 24-3 is provided, and the front side of the third gas container 24-3 and the vertical power unit 4
The gas fuel pipe 30 and the gas fuel supply device 32 are disposed between the gas engine 6 and the rear side of the vehicle with respect to the gas engine 6 which is a part of the constituent requirements.

More specifically, the third gas container 24-
When the third gas container 3 is mounted, the third gas container 24-3 is mounted with the longitudinal direction of the third gas container 24-3 oriented in the front-rear direction of the vehicle 2 as shown in FIGS.

As shown in FIGS. 1 to 6, the gas fuel supply device 32 includes first to third gas containers 24-3.
It comprises a main stop valve 34, a filter 36, and a regulator 38 for shutting off the supply of gaseous fuel from 1, 24-2 and 24-3.

Then, on one side of the vehicle body 28, a gas fuel pipe 30 and a fuel supply device 32, a gas fuel supply door 40, a receptor 42, a manual gas filling valve 44, a check valve 46
A gas refueling device 48 including at least one of the valves is disposed.

At this time, the gas fuel pipe 30 will be described. The gas fuel pipe 30 is connected to a first pipe 30-1 which connects a receptor 42 attached to an inner wall (not shown) of the vehicle body 28 and a gas filling valve 44. , Gas filling valve 4
A third pipe 30-3 connecting the check valve 46 and the branch portion a, a second pipe 30-2 connecting the check valve 4 and the check valve 46,
A fourth pipe 30-4 connecting the first gas container 24-1 to the branch portion a, and a fifth pipe 30-5 connecting the second gas container 24-2 to the middle of the fourth pipe 30-4. A sixth pipe 30-6 for connecting the third gas container 24-3 to the branch portion a, a seventh pipe 30-7 for connecting the branch portion a to the main stop valve 34, and a main stop valve 34. An eighth pipe 30-8 connecting the filter 36 and the filter 36, a ninth pipe 30-9 connecting the filter 36 and the regulator 38, and a regulator 3
And a tenth pipe 30-10 for connecting the fuel gas sensor 8 to the delivery pipe 50 on the gas engine 6 side;
Eleventh pipe 30-1 that communicates with the 0 pipe 30-10
1, a twelfth pipe 30-12 connecting the delivery pipe 50 and the fuel temperature sensor 54, and a thirteenth pipe 30-13 connecting the delivery pipe 50 and the injector 56.

Further, a part of the gas fuel pipe 30 and the gas fuel supply device 32 including the main stop valve 34, the filter 36, and the regulator 38 are connected to a box-shaped mounting bracket 58 having an underguard function, that is, a mounting bracket 58. 58, and the mounting bracket 58 is attached vertically to the power unit 4.
Is attached to the side frame 60 of the vehicle body 28 while approaching the gas engine 6 side.

In other words, the mounting bracket 58 is
And a bracket portion 58-1 for assembling the main stop valve 34, the filter 36, and the regulator 38, as shown in FIG.
The filter 36 is attached to the bracket 58-1.
And a filter guard 58-2 surrounding the filter guard 58-2.

The bracket portion 58-1 is formed in a box shape with a bottom by a thick plate material, and is formed in a state where the front side of the vehicle is closed.

The filter guard 58-2 is formed in a box shape with a bottom from a thin plate material having a smaller thickness than the bracket portion 58-1.

Reference numeral 62 denotes the mounting bracket 58.
An elastic body interposed when the regulator 38 is assembled to the bracket portion 58-1; 64, an engine cooling water pipe for keeping the regulator warm connected to the regulator 38;
1 to 66-4 are first to fourth bite joints.

Next, the operation will be described.

First, the main stop valve 34 and the regulator 3 are provided inside the bracket portion 58-1 of the mounting bracket 58.
8 and a filter 36 is mounted on the outer portion of the bracket portion 58-1. A filter guard 58 is provided to cover other portions except the upper portion of the filter 36.
-2 is fixed to the bracket portion 58-1.

At this time, simultaneously with the above-described assembling work, the eighth to tenth pipes 30-8, 30 of the gas fuel supply pipe 30 for connecting the main stop valve 34, the filter 36, and the regulator 38 are provided.
The piping of -9 and 30-10 is also performed.

That is, the first to fourth bite joints 66-1
The piping connection using ６６66-4 is performed.

After assembling integrally with the mounting bracket 58 to form a module, the mounting bracket 5
8 is attached to the side frame 60 of the vehicle body 28 while approaching the gas engine 6 side of the vertical power unit 4.

Thus, at least one of the gas containers, for example, the third gas container 24 is biased between the vehicle body 24 side of the vehicle 2 and the vertical power unit 4 and toward the rear wheel 18 of the vehicle 2. -3 and the third
A gas fuel pipe 30 and a gas fuel supply device 32 are arranged between the vehicle front side of the gas container 24-3 and the vehicle rear side of the gas engine 6 which is a part of the components of the vertical power unit 4. With the configuration, the third third gas container 24 can be efficiently disposed, the total gas fuel amount that can be stored can be increased, the traveling distance of the vehicle can be increased, and the space can be effectively used by the centralized arrangement. This is practically advantageous.

The gas fuel pipe 30 and the main stop valve 3
4, a fuel supply device 32 including a filter 36 and a regulator 38, and a gas fuel supply device including at least one of a gas fuel supply door 40, a receptor 42, a manual gas filling valve 44, and a check valve 46. By arranging the 48 on one side of the vehicle body 28, more effective use of space can be achieved, which is practically advantageous.

Further, a part of the gas fuel pipe 30 and the gas fuel supply device 32 including the main stop valve 34, the filter 36, and the regulator 38 are modularized by a box-shaped mounting bracket 58 having an underguard function. The mounting bracket 58 is attached to the side frame 60 of the vehicle body 28 while approaching the vertically mounted power unit 4 to the gas engine 6 side, so that a part of the gas fuel pipe 30 and The gas fuel supply device 32 including the main stop valve 34, the filter 36, and the regulator 38 can be modularized by the mounting bracket 58, so that workability is improved, and the first to fourth bite joints 66-1 due to a piping construction error. ~ 66-4
Gas leakage from the body hardly occurs, which is practically advantageous, and can be mounted on the vehicle body 28 after being modularized, so that the number of work steps for the vehicle body 28 can be reduced, and the line workability can be improved.

It should be noted that the present invention is not limited to the above-described embodiment, and various application modifications are possible.

For example, in the embodiment of the present invention, the gas fuel supply device including a part of the gas fuel pipe and the main stop valve, the filter, and the regulator is modularized by the mounting bracket. In addition, it is also possible to adopt a configuration in which a check valve and a gas filling valve are added to make a module.

In this case, almost all of the CNG parts for mounting the vehicle body except the gas container can be integrated into a module, which can contribute to effective use of space and improvement of workability.

Further, in the embodiment of the present invention, a third gas container is disposed between one side of the vehicle body of the vehicle and the vertical power unit and in a state of being biased toward the rear wheel of the vehicle. However, a special configuration in which the fourth gas container is disposed on the other side of the vehicle body corresponding to the mounting position of the third gas container is also possible.

Then, the weight balance of the vehicle can be improved, and the running stability of the vehicle can be improved.
The wear state of the tire can be made substantially uniform, which is practically advantageous.

Further, in the embodiment of the present invention, three gas containers having the same shape are mounted, but a special configuration in which the diameters of the third and subsequent gas containers are different may be employed. .

That is, when a large mounting space is provided, a gas container having a large diameter is mounted. Conversely, when the mounting space is small, a gas container having a small diameter is mounted. When mounting a small gas container, it is possible to mount a plurality of gas containers depending on the mounting space, and it is possible to effectively use the limited mounting space.

[0042]

As described above in detail, according to the present invention, in a vehicle equipped with a plurality of gas containers for storing compressed gas fuel, a vertically installed power unit is positioned substantially on the longitudinal centerline of the vehicle. At least one of the gas containers is disposed between the vehicle body side portion of the vehicle and the vertically placed power unit and in a state of being biased toward the rear wheel of the vehicle. Gas fuel piping and gas fuel supply equipment are arranged between the gas engine, which is a component of the vertical power unit, and the rear side of the vehicle with respect to the gas engine. The possible total gas fuel amount can be increased, the traveling distance of the vehicle can be increased, and the space can be effectively used by the concentrated arrangement, which is practically advantageous.

[Brief description of the drawings]

FIG. 1 is an enlarged plan view of a main part of a vehicle gas fuel supply device according to an embodiment of the present invention, in which a vertical power unit, a gas fuel pipe, a gas fuel supply device, and a gas fuel supply device are centrally arranged. .

FIG. 2 is a schematic view of a vehicle equipped with a gas container as viewed from a left side portion.

FIG. 3 is a schematic plan view of a vehicle equipped with a gas container.

FIG. 4 is a schematic enlarged plan view showing a state in which a part of a gas fuel pipe and a mounting bracket for modularizing a gas fuel supply device are mounted on a side frame of a vehicle body.

FIG. 5 is a schematic enlarged perspective view showing a state in which a part of a gas fuel pipe and a mounting bracket for modularizing a gas fuel supply device are mounted on a side frame of a vehicle body.

FIG. 6 is a block diagram of a gas fuel supply device for a vehicle.

[Explanation of symbols]

 2 Vehicle 4 Vertically placed power unit 6 Gas engine 8 Transmission 10 Propeller shaft 12 Driver's seat 14 Passenger's seat 16 Front wheel 18 Rear wheel 20 Rear seat 22 Floor panel 24 Gas container 24-1 First gas container 24-2 Second gas container 24- 3 Third gas container 26 Under guard 28 Body 30 Gas fuel pipe 32 Gas fuel supply equipment 34 Main stop valve 36 Filter 38 Regulator 40 Gas fuel supply door 42 Receptor 44 Gas filling valve 46 Check valve 48 Gas fuel supply equipment 50 Delivery pipe 52 Fuel pressure sensor 54 Fuel temperature sensor 56 Injector 58 Mounting bracket 58-1 Bracket part 58-2 Filter guard 60 Side frame 64 Regulator cooling engine cooling water piping 66-1 to 66-4 First to fourth bite joints

Claims (4)

[Claims] 1. A vehicle equipped with a plurality of gas containers for storing gaseous fuel, wherein a vertically installed power unit is mounted so as to be substantially positioned on a center line in the front-rear direction of the vehicle. And at least one of the gas containers is disposed so as to be biased toward the rear wheel side of the vehicle, and a gas engine which is a part of a component of the vertical power unit and a vehicle front side of the gas container. A fuel supply device for a vehicle, wherein a gas fuel pipe and a gas fuel supply device are arranged between the fuel supply device and the vehicle rear side. 2. The vehicle fuel supply device according to claim 1, wherein the gas fuel supply device includes a main stop valve, a filter, and a regulator that shut off supply of gas fuel from a gas container. 3. The vehicle includes, on one side of a vehicle body, a gas fuel supply device, a gas fuel supply door, a receptor, and a gas filling valve;
3. The fuel supply device for a vehicle according to claim 1, wherein a gas refueling device including at least one of the check valves is arranged. 4. The vehicle according to claim 1, wherein a gas fuel supply device including a main stop valve, a filter, and a regulator for shutting off gas fuel supply from a part of the gas fuel pipe and the gas container is modularized by a box-shaped mounting bracket. Along with
2. The fuel supply device for a vehicle according to claim 1, wherein the mounting bracket is mounted on a side frame of a vehicle body on a side of the vertically placed power unit.