Hybrid transmission for motor vehicle, has concentric primary shafts, and coupling unit formed between output shaft and idler gear, where idler gear has higher transmission ratio than hollow shaft connected to electric machine

摘要

#CMT# #/CMT# The transmission has two concentric primary shafts, and a secondary shaft (10) connected to wheels of a motor vehicle. A hollow shaft (6) is connected to an electric machine (7), where one of the primary shafts is connected to a flywheel of an engine. An idler gear (4) is engaged with a fixed gear (14) of the secondary shaft. A coupling unit (5) is formed between the primary shafts or between the primary shaft and the idler gear. Another coupling unit (13) is formed between an output shaft and the idler gear, where the idler gear has higher transmission ratio than the hollow shaft. #CMT# : #/CMT# An independent claim is also included for a method for controlling a hybrid transmission. #CMT#USE : #/CMT# Hybrid transmission for a motor vehicle. #CMT#ADVANTAGE : #/CMT# The coupling unit is formed between the output shaft and the idler gear, where the idler gear has higher transmission ratio than the hollow shaft, thus increasing control comfort of the vehicle in hybrid mode. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a longitudinal sectional view of a hybrid transmission. 4 : Idler gear 5, 13 : Coupling units 6 : Hollow shaft 7 : Electric machine 10 : Secondary shaft 14 : Fixed gear.