Abstract:
A method compensates for wheel torque interruption for a change in braking ratio in a vehicle with an electric traction unit linked to wheels by a gearbox that transmits, to the wheels, the braking torque of the electric traction unit in the deceleration phase over at least two transmission ratios, and a mechanical braking system acting on the wheels independently of the electric traction unit. The method includes defining a setpoint for mechanical braking torque at the wheels, depending on the control type of the electric traction unit, and the date of the downshift ratio change request to the gearbox. The mechanical braking torque setpoint is equal to the difference between an anticipated torque request to the electric traction unit and the estimation of the torque at the wheel, before the date of the end of the shift at the gearbox, if the electric traction unit is torque-controlled.
Abstract:
A method temporarily extends the autonomy of an electric vehicle including a traction battery having a nominal usable energy capacity that is less than its maximum actual energy capacity. The method includes an additional usable capacity release step so as to temporarily increase the autonomy of the vehicle.
Abstract:
A method manages a kilometer range of an electric-traction vehicle supplied with power by an electric battery including a usable capacity and a reserve. When the vehicle indicates a remaining range that is equal to a number of guaranteed kilometers, the method displays a range that decreases linearly over time, regardless of the coming driving conditions for the vehicle.
Abstract:
In order to control the disengagement limit position of a movable dog relative to a fixed dog of a motor vehicle transmission, the following steps are implemented: acquiring position values of the movable dog; detecting an abutment position of the movable dog against the fixed dog for a predefined period; and calculating the limit position from the position value of the movable dog in abutment against the fixed dog.
Abstract:
A system for monitoring torque supplied by a motor of a motor vehicle, for example an electric or hybrid vehicle. The system includes a mechanism determining a driver's request for torque, a mechanism estimating torque produced by a propulsion unit, a mechanism filtering the driver torque request which is connected at an input to a mechanism determining consistency between the torque request and the torque produced including a mechanism determining consistency of positive torque and a mechanism determining consistency of negative torque each including a mechanism determining phases of quasi-static variation of the request and a mechanism detecting torque anomalies which can construct an acceptable torque template and determine that a torque anomaly has occurred as a function of the torque estimate, the torque request, and the acceptable torque template.