The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 12, 2002
Filed:
Nov. 24, 1999
Alan Leslie Harris, Conventry, GB;
Karl-Friedrich Wörsdorfer, 55257 Budenheim, DE;
Other;
Abstract
An electro-hydraulic braking system of the type capable of operating in a braking-by-wire mode wherein hydraulic pressure is applied to braking devices at the vehicle wheels in proportion to the driver's braking demand as sensed electronically at a brake pedal, in a push-through mode wherein hydraulic pressure is applied to the braking devices at the vehicle wheels by way of a master cylinder coupled mechanically to the brake pedal and in an ABS mode in which the braking pressures at the individual wheels are controlled in dependence, inter alia, on the detected rotational behavior of the vehicle wheels, and which includes a hydraulic travel simulator which is connected hydraulically to the master cylinder by way of an electrically controlled isolation valve for providing improved feel for the driver through the brake pedal in the push-through operating mode. In order to ensure that the brake pedal cannot be pushed beyond a position corresponding to a wheel-locking pressure, and thereby make it easier for the driver to modulate the brake pressure and avoid excessive deceleration if the road adhesion improves, the travel simulator isolation valve is arranged to be closed when the ABS mode is active.