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. 14, 1995
Filed:
Mar. 30, 1994
Karl-Heinz Willmann, Freiberg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A hydraulic braking system having an apparatus for anti-lock control and for generating a differential lock by brake engagement, has a structurally simplified control unit, without any reduction in function. In its brake circuit II for driven vehicle wheels, the braking system with TT brake circuit distribution has valve assemblies associated with the wheel brakes and having an inlet valve and at least one outlet valve for brake pressure modulation. On the master cylinder side, a blocking valve is disposed in a brake line leading to the wheel brakes. A high-pressure pump with a charging valve in a suction line is capable of pumping brake fluid into the brake line. During the duration of the differential lock by brake engagement, the high-pressure pump is driven, in the phase for pressure buildup, the charging valve and the inlet valve of the wheel brake of the vehicle wheel to be slowed down assume the open position, and the inlet valve of the wheel brake of the other vehicle wheel and the blocking valve assume the blocking position, in the phase for pressure holding, the charging valve, the inlet valve of the wheel brake of the other vehicle wheel, and the blocking valve are switched into the blocking position, in the phase for pressure reduction, the charging valve and the inlet valve of the wheel brake of the other vehicle wheel are in the blocking position and the blocking valve is in the open position, in all phases of the brake pressure modulation, the at least one outlet valve remains in the blocking position. Such a hydraulic braking system is suitable in particular for motor vehicles.