Patent ID: 7650954
Filing Date: 2010-01-26
Classification: B60K,B60L,B60W,Y02T

Abstract:
1. A method for controlling the drive power distribution in a motor vehicle with hybrid drive, comprising the following steps: applying a reference moment of the motor vehicle from the drive power of an internal combustion engine and of at least one electric motor in the motor vehicle; calculating in advance via a control device a delay in a conversion of reference moments to actual moments in the internal combustion engine when the drive power changes due to a load point shift or change in the moment requested by the driver, wherein said step of calculating uses two identical segment models of the internal combustion engine for prediction of torque, said models taking into consideration an air mass stream in an intake pipe of the engine and a throttle valve position of the engine, and said models using a moment desired by the driver or on the basis of a requested load point shift to form output variables for calculation of the reference value of the electric motor to be set during the change in torque, and taking into consideration the balancing of torque differences that are caused by the internal combustion engine; and controlling and regulating the drive power distribution between the internal combustion engine and the electric motor by the control device based on said step of calculating so that torque differences that occur due to the delay of the internal combustion engine are balanced out by the electric motor.