Gearbox e.g. automatically-controlled manual gearbox, speed ratio changing method for hybrid motor vehicle, involves controlling machine in turning back phase to produce additional torque on primary shaft which compensates own inertia

摘要

#CMT# #/CMT# The method involves controlling an electrical traction machine (12) in an turning back phase for producing a additional torque on a primary shaft (8) which compensates own inertia using a control unit (20) associated to sensors, where the electrical traction machine is inserted in series between a clutch (6) and an automatically-controlled manual gearbox (9). The additional torque is provided by a specific relation having parameters such as height which is the sum of moment of inertia of mechanical parts connected to the machine, where the mechanical parts are in rotation. #CMT#USE : #/CMT# Method for changing a speed ratio in a gearbox e.g. automatically-controlled manual gearbox, of a hybrid motor vehicle (claimed). Can also be used for electrical front-wheel-drive vehicle. #CMT#ADVANTAGE : #/CMT# The method optimizes the change of the speed ratio in a simple and cost effective manner and while assuring the unlocking of a blocking ring in all cases during the turning back phase in spite of the high inertia of the electrical traction machine and without adding or modifying the mechanical parts. The method enables to know which side of the ring meets a sleeve. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a block diagram of a traction chain of a hybrid motor vehicle. '(Drawing includes non-English language text)' 1 : Heat engine 6 : Clutch 8 : Primary shaft 9 : Automatically-controlled manual gearbox 10 : Wheels 12 : Electrical traction machine 20 : Control unit.