Vacuum-boosted braking system having redundancy
AssigneeContinental Automotive Technologies GmbH
InventorsThorsten Ullrich, Tibor Toth, Martin Kraft, Manfred Liebl, Bernd Zielke, Stefan Daffner, Andreea Cenuse
Life of this patent
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Abstract
A hydraulic braking system has a vacuum brake booster, an ESC system with a hydraulic pump for generating braking force in a wheel-specific manner in a plurality of wheel brakes, an ESC control device for driving the hydraulic pump and a hydraulic pressure sensor for determining a hydraulic pressure in the hydraulic braking system. For electrified vehicles, an electric vacuum pump is provided for supplying the vacuum brake booster, wherein the ESC control device is designed to drive the electric vacuum pump logically and electrically.
Claims14
A hydraulic braking system comprising:
- a vacuum brake booster;
- an electronic stability control (ESC) system with a hydraulic pump for generating braking force in a wheel-specific manner in a plurality of wheel brakes;
- an ESC control device for driving the hydraulic pump;
- a hydraulic pressure sensor for determining a hydraulic pressure in the hydraulic braking system;
- an electric vacuum pump for supplying the vacuum brake booster;
- a vacuum sensor which is connected to the ESC control device;
- and
- wherein the ESC control device is designed to drive the electric vacuum pump logically and electrically;
- is designed to determine a run-out point of the vacuum brake booster from data from the vacuum sensor, is designed to identify exhaustion of the vacuum brake booster when hydraulic pressure is greater than the run-out point, and is designed to carry out brake boosting with the hydraulic pump in the event of exhaustion.
Dependencies are inferred from the claim text.