Global Patent Index - EP 1021665 A1

EP 1021665 A1 20000726 - METHOD AND DEVICE FOR CONTROLLING THE SUPPLY OF AN AUTOMATIC TRANSMISSION HYDRAULIC ACTUATORS

Title (en)

METHOD AND DEVICE FOR CONTROLLING THE SUPPLY OF AN AUTOMATIC TRANSMISSION HYDRAULIC ACTUATORS

Title (de)

VERFAHREN UND VORRICHTUNG ZUR STEUERUNG DES VERSORGUNGSDRUCKES FÜR DIE HYDRAULISCH BETÄTIGTEN STELLGLIEDER EINES AUTOMATIKGETRIEBES

Title (fr)

PROCEDE ET DISPOSITIF DE CONTROLE DE L'ALIMENTATION DES RECEPTEURS HYDRAULIQUES D'UNE TRANSMISSION AUTOMATIQUE

Publication

EP 1021665 A1 20000726 (FR)

Application

EP 98949039 A 19981012

Priority

  • FR 9802180 W 19981012
  • FR 9712661 A 19971010

Abstract (en)

[origin: FR2769677A1] The hydraulic feed for changing up or changing down gears is obtained by emptying the first operator and filling a second operator which control the clutches (E1,E2,E3) or the band brakes (F1,F2,F3,F4). The gear change can be found in one of the following conditions: a) emptying or empty without any particular control, b) in phase with active control for its filling in changing up under the pressure PL, c) in phase with active control for its emptying in changing up or refilling in changing down under a second pressure P2.

IPC 1-7

F16H 61/06

IPC 8 full level

F16H 61/06 (2006.01); F16H 61/00 (2006.01)

CPC (source: EP)

F16H 61/061 (2013.01); F16H 61/0021 (2013.01); F16H 2061/0253 (2013.01)

Citation (search report)

See references of WO 9919644A1

Designated contracting state (EPC)

DE ES GB IT

DOCDB simple family (publication)

FR 2769677 A1 19990416; FR 2769677 B1 19991203; EP 1021665 A1 20000726; WO 9919644 A1 19990422

DOCDB simple family (application)

FR 9712661 A 19971010; EP 98949039 A 19981012; FR 9802180 W 19981012