Title:
BRAKE SYSTEM WITH FLOATING PISTON-MASTER BRAKE CYLINDER UNIT WITH A NEW TYPE OF MUX CONTROL (MUX 2.0), HAVING AT LEAST ONE OUTLET VALVE, AND METHOD FOR CONTROLLING PRESSURE
Document Type and Number:
WIPO Patent Application WO/2016/146222
Kind Code:
A3
Abstract:
The invention relates to a brake system for motor vehicles, comprising: a master brake cylinder (HZE) and a floating piston (SK) arranged therein, which has a first and a second pressure chamber (DR1, DR2) sealingly separated from each other, the first pressure chamber (DR1) being hydraulically connected to a first brake circuit (BK I) and the second pressure chamber (DR2) to a second brake circuit (BK II); a pressure medium storage container (6) under atmospheric pressure; wheel brakes (RB1-RB4); an electrically controllable pressure supply device (DE) for the pressure buildup and pressure relief in the wheel brakes (RB1-4); and a valve block having a normally open inlet valve/switching valve (SV1, SV2, SV3, SV4) for each wheel brake (RB1-4) and having at least one outlet valve (AV1-4); and each wheel brake (RB1-4) can be hydraulically connected to a pressure chamber (DR1, DR2) of the master brake cylinder (HZE) via the switching valve (SV1, SV2, SV3, SV4) associated therewith and is or can be hydraulically connected to the pressure supply unit (DE) either directly or via separating valves (TV1, TV2), each brake circuit (BK I, BK II) being hydraulically connected to the pressure supply unit (DE) or being hydraulically connectible to the pressure supply unit (DE) via at least one controllable valve (TV1, TV2, TV2b). The brake system is characterized in that, at least during normal brake booster operation, pressure is applied to both pressure chambers (DR1, DR2) both during pressure buildup as well as during pressure relief in at least one wheel brake (RB1, RB2, RB3, RB4), said pressure corresponding to the pressure produced by the pressure supply unit (DE), and is further characterized in that in braking situations in which the pressure must change in at least one wheel brake in a highly dynamic fashion, in particular during ABS/ESP operation, at the same time the pressure in at least one wheel brake (RB1, RB2, RB3, RB4) changes by way of the volume control of the pressure supply unit (DE) and pressure is relieved via at least one outlet valve (AV) in at least one other wheel brake, in particular at the same time.
Inventors:
LEIBER HEINZ (DE)
LEIBER THOMAS (DE)
KÖGLSPERGER CHRISTIAN (DE)
LEIBER THOMAS (DE)
KÖGLSPERGER CHRISTIAN (DE)
Application Number:
PCT/EP2015/081401
Publication Date:
April 13, 2017
Filing Date:
December 30, 2015
Export Citation:
Assignee:
IPGATE AG (CH)
International Classes:
B60T13/68; B60T8/40; B60T13/74
Foreign References:
| DE102012002791A1 | 2013-08-22 | |||
| US20150069828A1 | 2015-03-12 | |||
| DE102011077329A1 | 2012-01-26 | |||
| US20140333124A1 | 2014-11-13 | |||
| DE102011118365A1 | 2013-05-16 |
Attorney, Agent or Firm:
LENZING GERBER STUTE PARTNERSCHAFTSGESELLSCHAFT VON PATENTANWÄLTEN M. B. B. (DE)
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