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:
Mar. 05, 1996
Filed:
May. 04, 1995
Reinhard Resch, Stuttgart, DE;
Mercedes-Benz AG, , DE;
Abstract
A hydraulic dual-circuit brake system for a road vehicle, with front-axle/rear-axle brake-circuit division, is equipped with an anti-lock system working on the recirculation principle, a device for driving-dynamics control and a device for the automatic initiation of full braking when the driver actuates the brake pedal at a speed .phi. which is higher than a relevant threshold value .phi..sub.s. A pedal-position sensor and a pressure sensor which generates electrical output signals characteristic of the brake pressure fed into the front-axle brake circuit provide control of the brake-pressure control unit into the brake-pressure supply mode both by the pedal-controlled pressure loading of a drive-pressure space of its brake booster and by the valve-controlled pressure loading of the drive-pressure space of the brake booster. The valve-controlled pressure loading is capable of being initiated automatically by output signals from an electronic control unit. For a supplementary or sole supply of brake pressure to the front-axle brake circuit, an auxiliary cylinder can, by valve control, be loaded with and relieved again of the outlet pressure of an auxiliary-pressure source and is a pressure intensifier. Thereby, brake fluid can be displaced into the front-axle brake circuit both during normal braking and during automatically controlled braking. The brake-fluid quantity can be controlled in a predeterminable monotonic correlation from a comparative processing of the output signals of the pedal-position sensor with the output signals of the pressure sensor.