METHOD FOR CONTROLLING AN ENGINE AND AN ELECTRONIC CLUTCH DURING A FIRST PHASE OF GEAR RATIO CHANGING IN A MECHANICAL GEARBOX

摘要

The present invention relates to a method for controlling a power train comprising a heat engine (1) cooperating with first control means capable of controlling the output torque Csortie of said engine (1 ), an electronic clutch (3) engaging with second control means capable of controlling the disengagement and the transmittable torque Ctransmissible of the clutch (3) and a gearbox (4), the input torque Centrée of which is derived from the values of Csortie and Ctransmissible, such that, during a clutch (3) disengagement phase, Csortie and Ctransmissible are controlled such that Centrée progressively decreases as a function of time, over an assigned time period T, to a predetermined target value Cfinal of Centrée according to the formula: (I), with K being a positive nonzero constant depending on the value of Centrée at the beginning of said phase, on Cfinal and on T.