Patent ID: 9592821
Date: 2017-03-14
CPC Classifications: B60K,B60W,B60Y,F02D,Y02T,Y10S

Claim:
1. A drive system for a vehicle, wherein the drive system comprises a combustion engine with an output shaft, a gear box with an input shaft, an electric machine which comprises a stator and a rotor, and a planetary gear which comprises a sun wheel, a ring wheel and a planet wheel holder, wherein the output shaft of the combustion engine is connected to a first of the components of the planetary gear such that rotation of the output shaft leads to rotation of the first component, the input shaft of the gear box is connected to a second of the components of the planetary gear such that rotation of the input shaft leads to rotation of the second component, and the rotor of the electric machine is connected to a third of the components of the planetary gear such that rotation of the rotor leads to rotation of the third component; the drive system comprises a control unit which has access to information concerning the moment of the electric machine for driving the vehicle based on knowledge of the electric energy led to or from the electric machine, and the control unit calculates the moment of the combustion engine for driving the vehicle at at least a first operation occasion when there is a known relation between the moment of the electric machine and the moment of the combustion engine based on knowledge of the moment of the electric machine, wherein the control unit is configured to compare the calculated moment of the combustion engine with a demanded moment of the combustion engine at the first operation occasion, and wherein the control unit is configured to store information concerning a deviation between the calculated moment of the combustion engine and the demanded moment of the combustion engine at the first operation occasion and to use the stored information for controlling the combustion engine at a second operation occasion.