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:
Apr. 30, 2024
Filed:
Aug. 10, 2021
Wabco Europe Bvba, Brussels, BE;
Michael Haverkamp, Hannover, DE;
Lars Volker, Seelze, DE;
ZF CV Systems Europe BV, Brussels, BE;
Abstract
The invention relates to an electronically controllable secondary brake system (), operated by pressure medium, useable as both as a parking brake system and an auxiliary brake system, with spring brake cylinders () arranged on wheel brakes of at least one vehicle axle (), with a directly or indirectly electronically controllable brake control valve (). The brake force of the spring brake cylinder () can be reduced by a feed of pressure medium and can be increased by a discharge of pressure medium, and with an electronic brake control unit () for controlling the brake control valve () dependent on the current value of a brake value signal (SBW). The brake control valve () is configured as a 3/3-way proportional valve with a pressure medium inlet, a pressure medium outlet, and a working connector, which is connected via a working line () to the spring brake cylinders.