Method and system for controlling a drive of a vehicle

摘要

#CMT# #/CMT# The method involves setting gear ratios in controller for operation of internal combustion engine and detecting a current driving speed and driving power of vehicle. A transmission stage is selected as a function of instantaneous vehicle speed and requested power. The engine is operated at instantaneous driving stage by increasing or decreasing the torque generated specific speed of vehicle. The operation of engine is changed at adjacent transmission stage, when the upper or lower torque limit value exceeds instantaneous transmission stage. #CMT# : #/CMT# An independent claim is included for drive system for controlling drive of vehicle. #CMT#USE : #/CMT# Method for controlling drive of vehicle (claimed) such as hybrid vehicle. #CMT#ADVANTAGE : #/CMT# The transmission stages can be selected appropriately. The operation of engine is performed in overlap region. Thus the oscillation between two translation stages is avoided if the operation takes place near two adjacent gear ratios. The operations of engine, generator, electric motor and electrical storage device are controlled by the controller, so that optimum efficiency is achieved, thus reducing energy consumption and pollutant emissions of internal combustion engine. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a graph illustrating the relationship between driving speed and driving power of vehicle. (Drawing includes non-English language text).