Drive unit for hybrid motor vehicle has controller that only causes up shift based on rising vehicle speed at constant power demand only if demanded power can be covered by main power component

摘要

The device has a main drive device (2), especially an internal combustion engine, an auxiliary drive device (4), especially an electrical machine, and a controller (20) for determining a gear ratio and initiating a shift process for an automatic gearbox (6). The controller causes an up shift based on a rising vehicle speed at constant power demand only if the demanded power can be covered by the main power component.