EP 3935291 A1 20220112 - METHOD FOR OPERATING AN ELECTRIC VEHICLE POWERTRAIN WITH A CONTINUOUSLY VARIABLE TRANSMISSION
Title (en)
METHOD FOR OPERATING AN ELECTRIC VEHICLE POWERTRAIN WITH A CONTINUOUSLY VARIABLE TRANSMISSION
Title (de)
VERFAHREN ZUM BETREIBEN EINES ANTRIEBSSTRANGS EINES ELEKTRISCHEN FAHRZEUGS MIT EINEM STUFENLOSEN GETRIEBE
Title (fr)
PROCÉDÉ D'ACTIONNEMENT D'UN GROUPE MOTOPROPULSEUR DE VÉHICULE ÉLECTRIQUE COMPRENANT UNE TRANSMISSION À VARIATION CONTINUE
Publication
Application
Priority
- EP 19020107 A 20190306
- EP 2019025436 W 20191205
Abstract (en)
[origin: WO2020177931A1] The invention relates to a hydraulically actuated continuously variable transmission (9) for or in a hybrid or a pure electric vehicle, comprising a primary hydraulically adjustable pulley (93) with a primary hydraulic cylinder (202), a secondary hydraulically adjustable pulley (94) with a secondary hydraulic cylinder (203), a flexible drive element (95) that is wrapped around and in friction contact with those pulleys (93, 94) and an electro-hydraulic control system for controlling a hydraulic pressure in at least said hydraulic cylinders (202, 203). According to the invention, the transmission is provided with two electrically driven pumps (201, 205), whereof a first pump (201) is capable of supplying hydraulic fluid to at least one of the said hydraulic cylinders (202, 203) via a first hydraulic line (204) and whereof a second pump (205) is capable of supplying hydraulic fluid to the said friction contact (216) between the flexible drive element (95) and the pulleys (93, 94) via a second hydraulic line (206).
IPC 8 full level
F16H 61/662 (2006.01); F16H 61/00 (2006.01); F16H 61/66 (2006.01)
CPC (source: EP)
B60K 6/48 (2013.01); B60K 6/543 (2013.01); F16H 57/0435 (2013.01); F16H 57/0441 (2013.01); F16H 57/0489 (2013.01); F16H 61/0025 (2013.01); F16H 61/0031 (2013.01); F16H 61/66 (2013.01); B60K 2006/4808 (2013.01); B60Y 2200/90 (2013.01); B60Y 2200/91 (2013.01); F16H 2061/0015 (2013.01); F16H 2061/0037 (2013.01); Y02T 10/62 (2013.01)
Citation (search report)
See references of WO 2020177833A1
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)
WO 2020177931 A1 20200910; CN 113544413 A 20211022; CN 113646200 A 20211112; EP 3935291 A1 20220112; JP 2022525003 A 20220511; WO 2020177833 A1 20200910
DOCDB simple family (application)
EP 2020025117 W 20200306; CN 201980093683 A 20191205; CN 202080019148 A 20200306; EP 19827624 A 20191205; EP 2019025436 W 20191205; JP 2021552678 A 20200306