Electronic traction control system
US6408972B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Nov 17, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/461
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An electronic traction control system for a vehicle having multiple hydraulically driven wheels includes a pump, a plurality of hydraulic drive motors each fluidly connected to the pump for driving one of the wheels, a corresponding plurality of speed sensors for generating a motor speed signal for each of the motors, and an electronic flow control valve. The electronic flow control valve includes a microcontroller electrically connected to the speed sensors for receiving and comparing the motor speed signals and a plurality of normally open anti-slip valves each electrically connected to the microcontroller for receiving a flow command signal therefrom based upon comparison of the motor speed signals. Each anti-slip valve fluidly connects to a drive motor between the drive motor and the pump. This electronic traction control system provides a method of controlling motor speed without changing the displacement of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.