公开(公告)号：EP1651493A1

公开(公告)日：2006-05-03

申请号：EP04740912.3

申请日：2004-07-12

申请人： WABCO GmbH & CO. OHG

发明人： DETLEFS, Carsten ,  DIEKMEYER, Heinrich ,  LIPPELT, Frank-Dietmar ,  REINHARDT, Joachim ,  STRILKA, Bernd

IPC分类号： B60T17/22 ,  B60T17/02 ,  B60T17/18 ,  B60T13/68

CPC分类号： B60T17/02 ,  B60T13/68 ,  B60T17/18 ,  B60T17/22

摘要： In order to identify malfunctioning of a compressed air consumer circuit in a compressed air system for vehicles, the pressure in the compressed air circuits (26, 28, 30, 32, 34, 36) routinely measured and evaluated in an electronic control unit (84), which compares pressure values and/or detected negative pressure gradients of the compressed air circuits with a threshold value (S) and blocks the corresponding compressed air consumer circuit if the pressure values and/or the negative pressure gradients meet a circuit malfunction criterion. Said circuit malfunction criterion is met when the pressure values and/or the pressure gradients fall short of the corresponding threshold value over a given time that is identical or greater than the time tdyn of a dynamic pressure change or a dynamic pressure drop (t=tdyn).

公开(公告)号：EP1651492A1

公开(公告)日：2006-05-03

申请号：EP04740910.7

申请日：2004-07-12

申请人： WABCO GmbH & CO. OHG

发明人： DETLEFS, Carsten ,  DIEKMEYER, Heinrich ,  LIPPELT, Frank-Dietmar ,  REINHARDT, Joachim ,  STRILKA, Bernd

IPC分类号： B60T17/02 ,  B60G17/00

CPC分类号： B60T17/02

摘要： An electronic compressed air system for vehicles, comprising a compressed air supply part (4) consisting of a compressor (7) and a compressed air consumer part (6) consisting of several compressed air consumer circuits (26, 28, 30, 32, 34, 36, 38) consisting of a pneumatic spring circuit (38) and operational brake circuits (26, 28) consisting of compressed air containers (90, 92) . The compressed air consumer circuits are supplied with compressed air by means of electrovalves (16, 18, 20, 22, 24). The pressure in the compressed air circuits is monitored by pressure sensors (72, 74, 76, 78, 80) whose pressure signals are evaluated by an electronic control unit (84) controlling the electrovalves. The electrovalve (24) of the pneumatic spring surface (38), which is embodied without a compressed air container, is closed in a flowless basic state whereas the electrovalves (16, 18, 20, 22) of the other compressed air consumer circuits (26, 28, 30, 32, 34, 36), particularly the operational brake circuits (26, 28) are open in a flowless basic state. When compressed air is required by the pneumatic spring circuit (38), the electrovalve thereof (24) is shifted into an open position by the electronic control unit (84) by means of data communication in order to establish a connection with the compressed air supply part (4) and/or the operating brake circuits (26,28) or compressed air containers (90,92) in order to refill the pneumatic spring circuit.

公开(公告)号：EP1651488A1

公开(公告)日：2006-05-03

申请号：EP04763168.4

申请日：2004-07-12

申请人： WABCO GmbH & CO. OHG

发明人： DETLEFS, Carsten ,  DIEKMEYER, Heinrich ,  LIPPELT, Frank-Dietmar ,  REINHARDT, Joachim ,  STRILKA, Bernd

IPC分类号： B60T8/88 ,  B60T17/22 ,  F15B19/00

CPC分类号： B60T8/885 ,  B60T17/221 ,  B60T2270/403 ,  F15B19/005

摘要： According to the invention, in order to identify a defect or failure of a compressed air load circuit in a compressed air installation for vehicles, the pressure in the compressed air load circuits (26 - 38) is continuously measured and is evaluated in an electronic control unit (84) that temporarily blocks the compressed air load circuits, measures the pressure values during the blocking time and/or determines the pressure gradients, respectively compares the pressure values and/or the determined pressure gradients with a threshold value, determines defective circuits, and definitively blocks circuits identified as being defective when the threshold value is not reached.

公开(公告)号：EP1651491A1

公开(公告)日：2006-05-03

申请号：EP04740911.5

申请日：2004-07-12

申请人： WABCO GmbH & CO. OHG

发明人： DETLEFS, Carsten ,  DIEKMEYER, Heinrich ,  LIPPELT, Frank-Dietmar ,  REINHARDT, Joachim ,  STRILKA, Bernd

IPC分类号： B60T17/00 ,  B60T11/32

CPC分类号： B60T11/326 ,  B60T13/26 ,  B60T17/00

摘要： The invention relates to a method for refilling operational brake circuits (26, 28) after a large consumption of compressed air. The operational brake circuits are compressed air consumer circuits of a consumer part (6) of a compressed air system for motor vehicles. The operational brake circuits also comprise at least one additional compressed air consumer circuit provided with a compressed air container. The aim of the invention is to continuously determine the actual pressure value in the operational brake circuits and the other compressed air consumer circuits (30, 32, 34, 36) and to compare said values to a lower threshold value. If said values fall below the threshold value, the identified operational brake circuits are blocked as defective and a connection is established between the other compressed air consumer circuits with the compressed air container and the intact operational brake circuits in order to refill said operational brake circuit from the compressed air containers of the at least one other compressed air consumer circuit.