Brake system
AssigneeIpgate AG
InventorsHeinz Leiber, Anton Van Zanten, Thomas Leiber
Life of this patent
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Abstract
A brake system may include an actuating device, in particular a brake pedal; a first piston-cylinder unit having two pistons subjecting the brake circuits to a pressure medium via a valve device, wherein one of the pistons can be actuated by the actuation device; a second piston-cylinder unit having an electric motor drive, a transmission at least one piston to supply at least one of the brake circuits with a pressure medium via a valve device; and a motor pump unit with a valve device to supply the brake circuits with a pressure medium. The brake system may also include a hydraulic travel simulator with a pressure or working chamber which is connected to the first piston-cylinder unit.
Claims8
A two-box brake system for use in autonomous driving operation (AD) of a vehicle and/or in an electric or hybrid vehicle, the vehicle having two axles, at least one of the axles being driven by at least one electric drive motor, the two-box brake system comprising:
- an electric brake booster as a part of a first box;
- and
- an electronic stability control (ESP) unit as a part of a second box,
- wherein the electric brake booster is connected to the ESP unit via a first hydraulic line and a second hydraulic line, the first hydraulic line being part of a first hydraulic brake circuit and the second hydraulic line being part of a second hydraulic brake circuit,
- wherein the electric brake booster and the ESP unit are connected to separate respective power supplies, wherein the electric brake booster comprises at least a first brake booster electronic control unit (ECU), wherein the first brake booster ECU is connected to a first power supply, and wherein the ESP unit comprises at least a first ESP ECU, wherein the first ESP ECU is connected to a second power supply, and
- wherein the electric brake booster comprises an at least partially redundant second brake booster ECU, wherein the second brake booster ECU is connected to the second power supply.
A two-box brake system for use in autonomous driving operation (AD) of a vehicle and/or in an electric or hybrid vehicle, the vehicle having two axles, at least one of the axles being driven by at least one electric drive motor, the two-box brake system comprising:
- an electric brake booster as a part of a first box:
- and
- an electronic stability control (ESP) unit as a part of a second box,
- wherein the electric brake booster is connected to the ESP unit via a first hydraulic line and a second hydraulic line, the first hydraulic line being part of a first hydraulic brake circuit and the second hydraulic line being part of a second hydraulic brake circuit,
- wherein the electric brake booster and the ESP unit are connected to separate respective power supplies,
- wherein the electric brake booster comprises a piston-cylinder unit with an electromotive drive, a transmission, and at least one pressure supply piston for supplying pressure medium to the first brake circuit and the second brake circuit, and
- wherein an electronically commutated (EC) motor of the electromotive drive is a 2×3-phase controlled EC motor.
Dependencies are inferred from the claim text.