Method for changing the pressure medium in an electrohydraulic braking system
AssigneeContinental Teves AG & Co. oHG
InventorsMartin Baechle, Axel Wagner, Michael Hitzel
Life of this patent
Estimating the term…
Abstract
The invention solves the problem of supplying fresh fluid, in particular in electrohydraulic brake systems, to all areas of the conduit systems that are not reached in a conventional brake fluid change. Therefore, the invention provides that a change of the pressure fluid be assisted by a hydraulic pump, during which change among others pressure fluid is delivered by means of the pump out of the pressure fluid reservoir through the inlet valves and out of the system through opened wheel bleeder connections.
Claims7
-6. (canceled)
A method for changing the pressure fluid of an electrohydraulic brake system, comprising a pedal-operated master brake cylinder and a brake circuit controlled by the master brake cylinder pressure, including a pump the intake side of which, by means of an intake conduit, is in communication with a pressure fluid reservoir, and a high-pressure accumulator as well as inlet and outlet valves for the wheel brakes connected to the brake circuit, with an inlet valve controlling the connection of the related wheel brake to the high-pressure accumulator, and an outlet valve controlling the connection of the related wheel brake to the pressure fluid reservoir by means of a non-pressurized return conduit, and with the master brake cylinder being connected to the brake circuit by means of a cut-off valve inserted downstream of the inlet valves, comprising at least the following steps:
- 1. conventional change of the pressure fluid by repeated manual application of the brake pedal.
- 2. activating the pump and delivering pressure fluid out of the reservoir.
- 3. connecting the inlet and outlet valves and the cut-off valve such that pressure fluid is fed from the high-pressure accumulator either to the wheel bleeder connections or into the pressure fluid reservoir.
Dependencies are inferred from the claim text.