Patent ID: 6986335
Filing Date: 2006-01-17
Classification: B60K,B60W,Y02T

Abstract:
1. A method for operating an internal combustion engine ( 10 ) installed in a motor vehicle having controlled intake and exhaust valves and that is coupled in fixed fashion with an electrical machine ( 16 ) charging an electrical energy accumulator, in particular a battery ( 21 ), wherein, in order to enable the electrical machine to perform recuperation on overrun or during braking operation of the internal combustion engine ( 10 ), the drag power or braking power of said internal combustion engine is regulated via intervention in the valve actuation process so that a braking or deceleration behavior of the motor vehicle is obtained that is familiar to the driver of the motor vehicle, wherein the valve actuation process and a regulation of the generator and motor operation of the electrical machine ( 16 ) are carried out as a function of the state of change, preferably of at least four levels of the state of charge, of the energy accumulator ( 21 ), wherein the valve actuation process and the regulation of the electrical machine ( 16 ) are coupled with a braking management system of the motor vehicle, and wherein the valve actuation process and the regulation of the generator or motor operation of the electrical machine ( 16 ) are carried out as a function of engine speed, accelerator-pedal travel and brake pressure.