METHOD OF CONTROLLING A HYBRID POWERTRAIN OF A MOTOR VEHICLE

    公开(公告)号:US20210291804A1

    公开(公告)日:2021-09-23

    申请号:US17260777

    申请日:2019-07-09

    摘要: Disclosed is a method for controlling a hybrid vehicle power train, including a thermal drive chain and an electric drive chain, the electric drive chain including a traction battery, a voltage modulator, an inverter, first and second electrical machines. The voltage modulator is designed to modulate a supply voltage of an electric current from the traction battery to the first and second electrical machines. The method includes: a step of analytically calculating an optimal supply voltage using a mathematical expression that corresponds to the resolution of an equation expressed as ∂ P b ⁢ a ⁢ t ∂ U e = 0 , where Ue is the supply voltage, Pbat is the electrical power supplied by the traction battery, and where the electrical power supplied by the traction battery is expressed as a quadratic function of the supply voltage; and a step of controlling the voltage modulator in such a way that it outputs the optimal supply voltage.

    Method for calculating a control setpoint of a hybrid powertrain of a motor vehicle

    公开(公告)号:US11097715B2

    公开(公告)日:2021-08-24

    申请号:US16489086

    申请日:2018-02-22

    IPC分类号: B60W20/11 B60W10/08 B60W40/10

    摘要: Disclosed is a method for calculating a control setpoint of a hybrid powertrain of a motor vehicle, the hybrid powertrain including an electric motor and an internal combustion engine (ICE) that is equipped with a gearbox and that is supplied with fuel. The method includes: acquiring a value relative to a power requested at the vehicle's drive wheels; and determining the contribution of the electric motor and the ICE in order to satisfy the request for power at the drive wheels. The determination step involves calculating a triplet of three values, one value relating to the electromechanical power that the electric motor must provide, one value relating to the thermomechanical power that the ICE must provide and one value relating to the ratio that needs to be engaged in the gearbox, this triplet minimising the fuel consumption of the ICE and the current consumption of the electric motor.