Method for controlling a hybrid powertrain and hybrid powertrain operating according to such a method

A method for controlling a hybrid powertrain for a vehicle comprising an internal combustion engine, an electrical machine connected to a crankshaft of the internal combustion engine via a transmission, and a control unit, the method comprising:

• acquiring first data comprising data representative of an efficiency of the internal combustion engine (M1), representative of an efficiency of the electrical machine (M2), and representative of an efficiency of the transmission (M3),
• acquiring second data representative of vehicle operating conditions,
• processing, by the control unit, the first and second data, and
• controlling said engine and said electrical machine based on the calculated distribution of torque;
• wherein processing comprises calculating a distribution of torque between the internal combustion engine and the electrical machine and operates according to a strategy of minimizing the equivalent instantaneous consumption defined by the actual fuel consumption of the internal combustion engine and by the equivalent fuel consumption corresponding to the electrical machine power and the equivalent instantaneous consumption is calculated for a plurality of discrete torque values deliverable by the electrical machine at the angular speed and the corresponding torque delivered by the internal combustion engine.

A hybrid powertrain for a vehicle comprising an internal combustion engine, an electrical machine to a crankshaft of the internal combustion engine via a belt transmission and a control unit, the control unit configured for:

• acquiring first data comprising data representative of an efficiency of the internal combustion engine (M1), representative of an efficiency of the electrical machine (M2), and representative of an efficiency of the belt transmission (M3),
• acquiring second data representative of vehicle operating conditions,
• processing the first and second data, wherein said processing comprises calculating a distribution of torque between the internal combustion engine and the electrical machine, and
• controlling the internal combustion engine and the electrical machine based on said calculated distribution of torque.