Patent ID: 7836988
Filing Date: 2010-11-23
Classification: B60K,B60L,B60W,F16D,Y02T

Abstract:
1. A method of operating a parallel hybrid drive train ( 1 ) of a vehicle having an internal combustion engine ( 2 ), an electric engine ( 3 ) and a drive train output ( 5 ), wherein the electric engine ( 3 ) is situated in a power flow path between the drive train output ( 5 ) and the internal combustion engine ( 2 ), a first shifting element ( 8 ) is located between the electric engine ( 3 ) and the output ( 5 ), and a second shifting element ( 7 ) is located between the internal combustion engine ( 2 ) and the electric engine ( 3 ), and operation of the internal combustion engine ( 2 ), the electric engine ( 3 ), the first shifting element ( 8 ) and the second shifting element ( 7 ) are controlled according to nominal standard operating parameters, which are adjusted to compensate for changes of operation over a service life of the internal combustion engine ( 2 ), the electric engine ( 3 ), the first shifting element ( 8 ) and the second shifting element ( 7 ), the method comprising the steps of: (A) measuring actual operating parameters of at least two of the internal combustion engine ( (B) determining divergences between measured operating parameters of at least two of the internal combustion engine ( (C) adjusting the nominal standard operating parameters according to the measured operating parameters to reduce at least one divergence between the nominal standard operating parameters and the measured operating parameters, and (D) controlling the at least two the internal combustion engine (