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1. (WO2018220308) LOW-COST METHOD FOR CONTROLLING A TORQUE TRANSMISSION DEVICE, PARTICULARLY FOR AN ELECTRIC OR HYBRID VEHICLE

Pub. No.:    WO/2018/220308    International Application No.:    PCT/FR2018/051157
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Sat May 12 01:59:59 CEST 2018
IPC: F16H 61/02
F16H 59/52
F16H 59/54
Applicants: RENAULT S.A.S
Inventors: FERREIRA DE ARAUJO, Manoela
MARSILIA, Marco
Title: LOW-COST METHOD FOR CONTROLLING A TORQUE TRANSMISSION DEVICE, PARTICULARLY FOR AN ELECTRIC OR HYBRID VEHICLE
Abstract:
The invention relates to a method for controlling a torque transmission device for an electric or hybrid vehicle, capable of transmitting the torque from the electrical machine of the vehicle to the drive wheels of the vehicle in accordance with a plurality of transmission ratios. All the ratios allow the maximum speed of the vehicle to be attained. The method comprises a step of detecting a favourable driving situation, during which a change of transmission ratio can be performed without interrupting the torque. If such a situation is detected, a step determines the optimum transmission ratio, said step including predicting the evolution of the power requirement taking into account the driving conditions. If the determined optimum ratio is different from the currently engaged ratio, a step engages the optimum transmission ratio. Application: electric or hybrid vehicles.