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US 9,428,159 B2Granted
Fail-safe parking brake for motor vehicles
AssigneeContinental Teves AG & Co. oHG
InventorsAndreas Heise, Kai Schade
Life of this patent
Estimating the term…
Abstract
An electronic controller for a brake system of a motor vehicle, having at least one interface to a control element, in particular a parking brake control switch, and at least two drive circuits for electric parking brake actuators. The electronic controller at least two independent arithmetic units, which are directly connected to each other via a data bus. A motor vehicle equipped with a controller according to the invention requires no transmission lock in an automatic gearbox.
Claims17
A brake system for a motor vehicle, comprising:
- a service brake on all wheels of the motor vehicle and electric parking brake actuators on at least two wheels;
- an electronic controller configured to control the service brakes and the electric parking brake actuators,
- a parking brake control switch,
- first and second drive circuits for first and second electric parking brake actuators,
- at least a first and a second independent arithmetic unit, which are directly connected to each other by means of a data bus, and the first and the second arithmetic units connected with and controlling the first and second drive circuits,
- the first and the second independent arithmetic units are implemented at least partly in redundant form, and
- the first and the second arithmetic units are in the form of a redundant core microcontroller with two processor cores working in lockstep mode, wherein the first and the second arithmetic units are entirely comprised within the electronic controller.
4 more elements
Dependencies are inferred from the claim text.