Invention Grant
- Patent Title: Work vehicle
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Application No.: US17638290Application Date: 2021-03-12
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Publication No.: US12129627B2Publication Date: 2024-10-29
- Inventor: Shinichiro Tanaka , Hiroyasu Kodera
- Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
- Current Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: MATTINGLY & MALUR, PC
- Priority: JP 20058338 2020.03.27
- International Application: PCT/JP2021/010140 2021.03.12
- International Announcement: WO2021/193155A 2021.09.30
- Date entered country: 2022-02-25
- Main IPC: E02F9/20
- IPC: E02F9/20 ; B60T7/04 ; B60T8/32 ; B60T8/36 ; B60T8/58 ; B60T8/94 ; B60T13/68 ; E02F3/28 ; E02F9/26 ; B60T13/14

Abstract:
Provided is a work vehicle capable of satisfying a user's demand to brake performance in a flexible manner. A wheel loader 1 comprises a controller 5 storing a plurality of control characteristics each of which is set such that a brake valve control pressure Pi of a solenoid proportional valve 45 increases as a pedal angle θ of a brake pedal 43 increases, and under the condition where a pedal angle θ is equal to or less than a predetermined pedal angle θ, an increase rate of the brake valve control pressure Pi with respect to the pedal angle θ varies. In a case where the pedal angle θ detected by a potentiometer 33 is equal to or less than the predetermined pedal angle θth, the controller 5, calculates the brake valve control pressure Pi based on the selected one control characteristic.
Public/Granted literature
- US20220333347A1 WORK VEHICLE Public/Granted day:2022-10-20
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