Title:
ELECTRO-HYDRAULIC STEERING SYSTEM FOR A MOBILE APPLICATION
Document Type and Number:
WIPO Patent Application WO/2013/071041
Kind Code:
A3
Abstract:
A vehicle steering system including a steering device (20), a position sensor (30) that senses the position of the steering device, and an electronic control unit (40) in operative communication with the position sensor and configured to control the capacity of a variable capacity pump (80) based on output of the sensor is described herein. The variable capacity pump may be a variable displacement pump and the system may also include an electric displacement control adapted to control displacement of the variable displacement pump. The electronic control unit may be configured to determine a rate of change of the position of the steering device, and generate a capacity command signal for controlling the capacity of the variable capacity pump based on the determined rate of change.
Inventors:
FRANZONI GERMANO (US)
HARSIA JARMO (US)
CLAAR LESLIE (US)
PERSSON BENGT-GORAN (SE)
HARSIA JARMO (US)
CLAAR LESLIE (US)
PERSSON BENGT-GORAN (SE)
Application Number:
PCT/US2012/064352
Publication Date:
July 04, 2013
Filing Date:
November 09, 2012
Export Citation:
Assignee:
PARKER HANNIFIN CORP (US)
International Classes:
B62D5/065
Domestic Patent References:
| WO2012062500A1 | 2012-05-18 |
Foreign References:
| EP0926042A1 | 1999-06-30 | |||
| DE10027888A1 | 2001-01-18 | |||
| EP0962378A2 | 1999-12-08 | |||
| EP1607308A2 | 2005-12-21 | |||
| JP2007320538A | 2007-12-13 | |||
| DE19919393A1 | 2000-11-02 |
Attorney, Agent or Firm:
BULSON, Don W. (Otto Boisselle & Sklar, LLP,1621 Euclid Ave., 19th Fl, Cleveland Ohio, US)
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