Global Patent Index - EP 2569193 A1

EP 2569193 A1 20130320 - METHOD FOR ADJUSTING THE PLAY IN A HYDRAULIC BRAKE SYSTEM, IN PARTICULAR FOR A MOTOR VEHICLE

Title (en)

METHOD FOR ADJUSTING THE PLAY IN A HYDRAULIC BRAKE SYSTEM, IN PARTICULAR FOR A MOTOR VEHICLE

Title (de)

VERFAHREN ZUR LÜFTSPIELEINSTELLUNG EINER HYDRAULISCHEN BREMSANLAGE; INSBESONDERE FÜR EIN KRAFTFAHRZEUG

Title (fr)

PROCÉDÉ D'AJUSTEMENT DU JEU D'UN SYSTÈME DE FREINAGE HYDRAULIQUE, EN PARTICULIER POUR UN VÉHICULE À MOTEUR

Publication

EP 2569193 A1 20130320 (DE)

Application

EP 11720749 A 20110511

Priority

  • DE 102010028909 A 20100512
  • EP 2011057602 W 20110511

Abstract (en)

[origin: WO2011141507A1] The invention relates to a method for adjusting the brake play of a hydraulic brake system (1). According to the invention, the following method steps are carried out: a) detecting a first rotational position of a pump part by means of a position sensor associated with the hydraulic pump (3), b) generating a negative pressure, which causes a piston reset, in the pressure chamber of the wheel brake by taking in a volume of the brake medium that is determined by a predefined target rotational angle of a pump part from the pressure chamber via a suction-side hydraulic connection to the pressure chamber in that the predefined target rotational angle of the pump part effects a rotation of the pump part into a second rotational position by controlling the electric motor (4) during stepper motor operation by means of a PWM signal as the controlled variable, wherein the second rotational position is detected by means of the position sensor, and the controlled variable is determined depending on the deviation of the actual rotational angle determined based on the second rotational position from the target rotational angle.

IPC 8 full level

B60T 8/40 (2006.01); B60T 8/48 (2006.01)

CPC (source: EP US)

B60T 8/404 (2013.01 - EP); B60T 8/4872 (2013.01 - EP); F16D 65/72 (2013.01 - US)

Citation (search report)

See references of WO 2011141507A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

DE 102010028909 A1 20111117; CN 102883927 A 20130116; EP 2569193 A1 20130320; KR 20130067278 A 20130621; US 2013140115 A1 20130606; WO 2011141507 A1 20111117

DOCDB simple family (application)

DE 102010028909 A 20100512; CN 201180023541 A 20110511; EP 11720749 A 20110511; EP 2011057602 W 20110511; KR 20127032540 A 20110511; US 201113697427 A 20110511