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EP-4737168-A1 - WORK VEHICLE

EP4737168A1EP 4737168 A1EP4737168 A1EP 4737168A1EP-4737168-A1

Abstract

The present disclosure relates to a work vehicle. A work vehicle of the present disclosure includes: a vehicle body; an electric motor and a fuel cell module each installed on the vehicle body; a hood covering the fuel cell module; a hydrogen pipe through which hydrogen is supplied into the hood; and a hydrogen sensor configured to detect hydrogen. The hydrogen sensor is fixed to an outer surface of the fuel cell module.

Inventors

  • MINAMIDE, YUKI
  • OHNISHI, Teppei
  • NAKAMURA, KIMIHIRO
  • HATAKENAKA, Yusuke

Assignees

  • Kubota Corporation

Dates

Publication Date
20260506
Application Date
20240501

Claims (6)

  1. A work vehicle comprising: a vehicle body; an electric motor and a fuel cell module each installed on the vehicle body; a hood covering the fuel cell module; a hydrogen pipe through which hydrogen is supplied into the hood; and a hydrogen sensor configured to detect hydrogen, wherein the hydrogen sensor is fixed to an outer surface of the fuel cell module.
  2. The work vehicle according to claim 1, wherein the hydrogen sensor is fixed to an upper side of the outer surface of the fuel cell module.
  3. The work vehicle according to claim 2, wherein the hydrogen sensor is fixed to the upper side of the outer surface with a bracket supporting the hydrogen sensor.
  4. The work vehicle according to claim 3, further comprising a hinge supporting the hood so that the hood is openable and closable, wherein the hinge is fixed to the bracket.
  5. The work vehicle according to claim 4, wherein the hinge is disposed on an upper side of the fuel cell module.
  6. The work vehicle according to claim 1 or 2, wherein the fuel cell module further includes a connection port to which the hydrogen pipe is connected, the connection port being located in the outer surface, and the hydrogen sensor is fixed to the outer surface at a position above the connection port.

Description

TECHNICAL FIELD The present disclosure relates to a work vehicle. BACKGROUND ART A work vehicle including an electric motor and a battery has conventionally been known (see Patent Literature 1). In the work vehicle disclosed in Patent Literature 1, the battery is disposed in a hood. The work vehicle disclosed in Patent Literature 1 is a tractor. CITATION LIST [PATENT LITERATURE] PATENT LITERATURE 1: Japanese Laid-Open Patent Publication No. 2022-060655 SUMMARY OF THE INVENTION A work vehicle according to an aspect of the present disclosure includes: a vehicle body; an electric motor and a fuel cell module each installed on the vehicle body; a hood covering the fuel cell module; a hydrogen pipe through which hydrogen is supplied into the hood; and a hydrogen sensor configured to detect hydrogen, and the hydrogen sensor is fixed to an outer surface of the fuel cell module. According to the present disclosure, it is possible to easily dispose a hydrogen sensor near a fuel cell module in a hood. It is therefore possible to detect leakage of hydrogen in a hood of a work vehicle including a fuel cell module and an electric motor. BRIEF DESCRIPTION OF DRAWINGS [FIG. 1] FIG. 1 is a perspective view illustrating a work vehicle according to an embodiment of the present disclosure.[FIG. 2] FIG. 2 is a front view illustrating the work vehicle according to the embodiment of the present disclosure.[FIG. 3] FIG. 3 is a rear view illustrating the work vehicle according to the embodiment of the present disclosure.[FIG. 4] FIG. 4 is a right side view illustrating the work vehicle according to the embodiment of the present disclosure.[FIG. 5] FIG. 5 is a left side view illustrating the work vehicle according to the embodiment of the present disclosure.[FIG. 6] FIG. 6 is a plan view illustrating the work vehicle according to the embodiment of the present disclosure.[FIG. 7] FIG. 7 is a bottom view illustrating the work vehicle according to the embodiment of the present disclosure.[FIG. 8] FIG. 8 is a partially exploded perspective view illustrating the work vehicle of the present disclosure.[FIG. 9] FIG. 9 is a left side view of the work vehicle from which some components are removed.[FIG. 10] FIG. 10 is an explanatory view of a layout of hydrogen supply pipes in the work vehicle.[FIG. 11] FIG. 11 is an explanatory view of an arrangement of a hydrogen sensor and a hinge near a fuel cell.[FIG. 12] FIG. 12 is a plan view illustrating a positional relationship between the hydrogen sensor and each of a hood and a cover.[FIG. 13] FIG. 13 is a perspective view illustrating the positional relationship between the hydrogen sensor and each of the hood and the cover.[FIG. 14] FIG. 14 is a partially enlarged left side view illustrating the positional relationship between the hydrogen sensor and each of the hood and the cover.[FIG. 15] FIG. 15 is an explanatory view of the hydrogen sensor, a bracket, and the hinge.[FIG. 16] FIG. 16 is an explanatory view of a state in which the hinge supports the hood. DETAILED DESCRIPTION <Problems to be solved by the invention> Consideration has recently been given to work vehicles that travel in such a manner that an electric motor is driven using electric power generated from hydrogen as fuel by a fuel cell module. It has been considered for such work vehicles to place a fuel cell module in a space in a hood where an engine has conventionally been placed. It has been desired for such work vehicles to detect leakage of hydrogen in a hood. An object of the present disclosure is to enable detection of leakage of hydrogen in a hood of a work vehicle including a fuel cell module and an electric motor. <Advantageous effect of the invention> According to a work vehicle of the present disclosure, it is possible to easily dispose a hydrogen sensor near a fuel cell module in a hood. It is therefore possible to detect leakage of hydrogen in a hood of a work vehicle including a fuel cell module and an electric motor. <Outline of embodiments of the present disclosure> An outline of below-listed embodiments of the present disclosure is described. (1) A work vehicle according to the present embodiment includes: a vehicle body; an electric motor and a fuel cell module each installed on the vehicle body; a hood covering the fuel cell module; a hydrogen pipe through which hydrogen is supplied into the hood; and a hydrogen sensor configured to detect hydrogen, and the hydrogen sensor is fixed to an outer surface of the fuel cell module. According to the work vehicle of the present embodiment, it is possible to easily dispose the hydrogen sensor near the fuel cell module in the hood. It is therefore possible to detect leakage of hydrogen in the hood of the work vehicle including the fuel cell module and the electric motor. (2) Preferably, in the work vehicle of the present embodiment, the hydrogen sensor is fixed to an upper side of the outer surface of the fuel cell module. This enables the hydrogen sensor to reliably d