| US 7,461,906 B2 | ||
| Method for changing the pressure medium in an electrohydraulic braking system | ||
| Martin Baechle, Glashütten 1 (Germany); Axel Wagner, Schlüchtern (Germany); and Michael Hitzel, Rödermark (Germany) | ||
| Assigned to Continental Teves Ag & Co. oHG, Frankfurt (Germany) | ||
| Appl. No. 10/524,460 PCT Filed Aug. 13, 2003, PCT No. PCT/EP03/08986 § 371(c)(1), (2), (4) Date Oct. 18, 2005, PCT Pub. No. WO2004/016489, PCT Pub. Date Feb. 26, 2004. |
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| Claims priority of application No. 102 37 183 (DE), filed on Aug. 14, 2002; application No. 103 09 479 (DE), filed on Mar. 05, 2003; and application No. 103 16 648 (DE), filed on Apr. 11, 2003. | ||
| Prior Publication US 2006/0152072 A1, Jul. 13, 2006 | ||
| Int. Cl. B60T 13/18 (2006.01) | ||
| U.S. Cl. 303—11 | 6 Claims |
| 1. 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 in a first configuration such that pressure fluid is fed from
the high-pressure accumulator to wheel bleeder connections and;
4. connecting the inlet and outlet valves and the cut-off valve in a second configuration such that pressure fluid is fed
from the high-pressure accumulator into the pressure fluid reservoir.
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