Peugeot Citroen Automobiles Sa

Peugeot Citroen Automobiles Societe Anonyme

Vincent Mulot

Yvan Le Neindre

Carlos Junca

Remy Delplace

Olivier Mechin

Nicolas Thauvin

Joseph Krasznai

Patrick Lagonotte

Rémy Delplace

Armand Pierre Antoine Boatas

The invention relates to a braking method for a hybrid vehicle () comprising a drivetrain () controlled by a drivetrain computer (), and a hydraulic braking system () controlled by a braking computer (). In this method, as soon as the drivetrain computer () detects that the electrical braking torque is decreasing, this drivetrain computer () informs the hydraulic braking computer () of the value of the reduction in electric braking torque. The braking computer () then operates the hydraulic braking system () in such a way that the hydraulic braking torque applied to the wheels () by the brakes () compensates for this reduction in electric braking torque.

Braking method for hybrid vehicles compensating for an electric braking torque

The method includes, during a first step () determining in real time the fuel consumption gain of the thermal engine by defining the difference between the consumption of the thermal engine in operation and the consumption of the thermal engine when stopped independently from other energy sources outside the thermal engine, the equivalent consumption being calculated from a predetermined coefficient corresponding to the ratio between a consumption difference and an engine power difference for a given engine speed; during a second step (), deciding to switch on or switch off the thermal engine according to a criterion and to the consumption gain, the criterion depending on the recovery level of the electric energy recovering means and being determined in order to increase the use of the electric energy storage means and to switch off the thermal engine as often as possible.

Method for controlling energy in the traction chain of a hybrid vehicle and hybrid vehicle

Growing community of inventors

Paris, France

Vincent Mulot