JPH10258776A - Arrangement of under floor equipment for rear engine bus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate wiring, piping and cabling with related instruments wherein a floor is low, a part protruded to a floor surface is in a position for securing a passage width in this case and a weight distribution is proper. SOLUTION: In a front overhang part B1, a door engine air reservoir 18 is disposed in a front end part with a vehicle cross direction as a longitudinal direction, two batteries 14 are disposed back and forth along a side face opposite the side of a landing S1, a brake air reservoir 15 is disposed in its inside with a back and forth direction as a longitudinal direction, a fuel tank 11 is disposed below a floor between front and rear axles 7 and 6 and, in a rear overhang part B2, an air reservoir 17 for an air suspension is disposed in the rear side of the rear wheel 6a of a side opposite the side of a landing S3, and a main air reservoir 16 is disposed in its rear side with a vehicle cross direction as a longitudinal direction. The disposing position of the fuel tank 11 below the floor between the front and rear axles 7 and 6 is set in any selected from the rear side of the front wheel 7a of a side opposite a landing S2, the front side of the rear wheel 6a of a side opposite the landing S2 and the rear side of the rear wheel 7a of a side opposite the landing S2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement structure of an underfloor device of a rear engine bus having a power unit disposed at a rear end of a vehicle body at right angles to a vehicle center line.

[0002]

2. Description of the Related Art Hitherto, opportunities for the elderly and the disabled to participate in society have been increasing, and it has been demanded that buses, which are public transportations, be improved particularly in terms of getting on and off. Therefore, for the purpose of improving the getting on and off, the floor of the passenger cabin has been lowered to lower or eliminate steps for getting on and off. As a result, there is a problem that a part of the passage protrudes from the floor surface, the passage width is reduced, the effective floor area is reduced, or a step is generated.

[0003] Thus, as a result of various studies, the inventor has found that the floor can be lowered and the width of the passage can be ensured by devising the arrangement of various devices.

[0004]

Therefore, according to the present invention, the floor can be lowered, and at this time, the protruding portion to the floor is a position where the passage width can be secured, the weight distribution is appropriate, and It is an object of the present invention to provide an arrangement structure of underfloor equipment of a rear engine bus, which facilitates wiring, piping, and wiring with equipment.

[0005]

According to the present invention, in a layout structure of an underfloor device of a rear engine bus in which a power unit is disposed at a rear end of a vehicle body at right angles to a vehicle center line, a front overhang portion is provided at a front overhang portion. An air reservoir for a door engine is disposed longitudinally in the vehicle width direction, and two batteries are disposed forward and rearward along the side surface opposite to the entrance / exit, and an air reservoir for a brake extends longitudinally in the longitudinal direction inward. A fuel tank is located under the floor between the front and rear axles, and an air reservoir for air suspension is located behind the rear wheel on the rear overhang, opposite the entrance, and a main air reservoir is located behind the reservoir. The width direction is arranged longitudinally.

[0006] In practicing the present invention, the fuel tank below the floor between the front and rear axles, the rear of the front wheel opposite the entrance, the front of the rear wheel opposite the entrance, and the rear of the front wheel on the entrance side. Crabs are arranged.

According to the present invention having the above-described configuration, since the devices are arranged on the sides of the vehicle, a sufficient width of the passage can be ensured even when the floor is lowered. Each device is located near the related devices for easy wiring and piping.
It is easy to handle, and the positions are dispersed and the weight distribution is appropriate. Also, the fuel tank position is
Three locations can be selected from the room layout and weight distribution.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3, the present invention is applied to a so-called non-step without a step for getting on and off, and a vehicle body B is provided with a front axle 7 and a rear axle 6, and an engine room R is provided at a rear end thereof. Is provided. In the engine room R, the engine 2 and
A power unit 1 composed of a transmission 3 and a V-drive device 4 is disposed with its central axis E orthogonal to the vehicle body central axis C, and a rear axle 6 from a V-drive device 4 at the end thereof via a propeller shaft. Being driven. Also,
A radiator 9 is provided above the V-drive device, and an air cleaner 21 is provided above the engine 2 on the opposite side. And, on the left side in the traveling direction of the vehicle body, the entrances S1
In the example shown, S3 is provided at three positions: front, center, and rear.

[0009] On the other hand, various devices are arranged under the floor as follows. First, the front axle 7
In the overhang portion B1, an air reservoir 18 for a door engine is provided at a front end thereof in a longitudinal direction in the vehicle width direction, and two batteries 14 are provided in front and rear along a side surface opposite to the entrance S1. An air reservoir 15 for brakes is disposed inward of the longitudinal direction in the longitudinal direction.

Under the floor between the front and rear axles 7 and 6, a fuel tank 11 is mounted on the rear side of the front wheel 7a opposite the entrance S2.
And the front 11A of the rear wheel 6a on the side opposite to the entrance S2 and the rear 11B of the front wheel 7a on the side of the entrance S2.

[0011] Rear overhang portion B behind rear axle 6
2, an air reservoir 17 for air suspension is provided behind the rear wheel 6a on the opposite side of the entrance S3, and a main air reservoir 16 is provided behind the air reservoir 17 in the vehicle width direction.

In the arrangement of the underfloor devices described above, since each device is disposed on the side of the vehicle, even if the floor is lowered, the central passage P has a sufficient width as shown by hatching in the figure. Can be secured. The air reservoir 18 for the door engine is arranged near a door engine (not shown), the air reservoir 15 for brakes is arranged near a brake valve (not shown), and the air reservoir 17 for suspension is arranged near an air spring (not shown). 16 is also an engine 2 equipped with an air compressor
The equipment such as the air dryer 19 is also provided near the device. The battery 14 is also a position that can be easily approached from the side of the vehicle body, and the wiring and piping of these devices are easy and the handling is excellent.

[0013]

The present invention is configured as described above and has the following effects. (1) Under-floor equipment is arranged so as not to be under the aisle, and a sufficient aisle width can be secured even if the floor is lowered. (2) Each underfloor equipment is arranged near related equipment, so that wiring and piping are easy and handling is easy. And there is no problem of weight distribution. (3) The location of the fuel tank can be selected from three locations based on the layout of the entrance / exit, the cabin layout, and the weight distribution.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a bus according to the present invention.

FIG. 2 is an explanatory view of a passage according to the present invention.

FIG. 3 is a plan view showing an embodiment of an arrangement of underfloor equipment according to the present invention.

[Explanation of symbols]

 B ... body C ... body center axis E ... power unit center axis P ... passages S1 to S3 ... getting on and off 1 ... power unit 2 ... engine 3 ... transmission 4・ ・ ・ V drive device 6 ・ ・ ・ Rear axle 7 ・ ・ ・ Front axle 9 ・ ・ ・ Radiator 11 ・ ・ ・ Fuel tank 14 ・ ・ ・ Battery 15 ・ ・ ・ Air reservoir for brake 16 ・ ・ ・ Main air reservoir 17 ・..Air reservoirs for suspensions 18 ... Air reservoirs for door engines

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yoichi Takada 1-7-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo Inside Fuji Heavy Industries Ltd.

Claims (4)

[Claims] 1. An under-floor equipment arrangement for a rear engine bus having a power unit disposed at a rear end of the vehicle body at right angles to a vehicle center line, wherein a front engine overhang portion has a door engine air reservoir at a front end thereof in a vehicle width direction. Are arranged longitudinally, two batteries are arranged front and rear along the side opposite to the entrance, and a brake air reservoir is arranged longitudinally in the longitudinal direction inward of the two batteries, and between the front and rear axles. A fuel tank is arranged under the floor, and an air reservoir for air suspension is arranged behind the rear wheel on the opposite side of the rear overhang, and a main air reservoir is arranged behind it in the longitudinal direction in the vehicle width direction. The arrangement structure of the under-floor equipment of the rear engine bus. 2. The arrangement structure of under-floor equipment for a rear engine bus according to claim 1, wherein the fuel tank below the floor between the front and rear axles is disposed behind the front wheel on the opposite side of the entrance. 3. The arrangement structure of under-floor equipment for a rear engine bus according to claim 1, wherein the fuel tank below the floor between the front and rear axles is disposed in front of a rear wheel on the side opposite to the entrance. 4. The arrangement structure of underfloor equipment of a rear engine bus according to claim 1, wherein the fuel tank below the floor between the front and rear axles is disposed behind the front wheel on the entrance / exit side.