A method for controlling a vehicle power train that includes a heat engine connected to the transmission of the vehicle by a clutch controlled between an open position and a closed position of the transmission by a computer of the transmission exchanging information with a computer of the heat engine. The method includes sending, in order to shut down the engine before the clutch is opened when the vehicle is in motion, the kinematic chain being closed and the injection interrupted, a message from the computer of the transmission to the computer of the engine at a first moment in time so as to synchronize an opening of the clutch and the closure of an air flap of the engine at a second moment in time subsequent to the first moment.

A powertrain assembly has multiple torque actuators. The assembly includes a first controller configured to control a first torque actuator and a second controller configured to control a second torque actuator. The first controller is configured to receive a signal from an input sensor and convert the signal into a torque demand. The second controller is configured to receive the torque demand from the first controller and determine respective optimal torque allocations for the first and second torque actuators based on the torque demand and a plurality of optimization factors. The first controller includes a processor and tangible, non-transitory memory on which is recorded instructions for executing a method of controlling the multiple torque actuators across the at least two controllers via a dynamic look-up table. The dynamic look-up table is populated by a plurality of stored torque production allocation values based on a respective plurality of torque requests.

A hybrid vehicle includes two drive sources and two clutches, and is switchable between a neutral mode and a parallel mode during vehicle traveling. The two drive sources are both disconnected from drive wheels in the neutral mode, and are both connected to the drive wheels in the parallel mode. A control method for the hybrid vehicle includes implementing at least one of a first switching control and a second switching control. The first switching control includes, upon switching from the neutral mode to the parallel mode, implementing two synchronization controls on rotational speeds before and after the two clutches, concurrently during at least a partial period. The second switching control includes, upon switching from the parallel mode to the neutral mode, implementing two controls to cause transmitted torques of the two clutches to respectively approach zero, concurrently during at least a partial period.

A method and system for blending between torque maps of a source propulsion of a vehicle. The method and system are particularly applicable to automatic selection of an alternative torque map in response to a change of vehicle operating condition, for example, a change of terrain. Blending may substantially avoid a step change in response of the source of propulsion as accelerator position is changed.

A motor vehicle having: a prime mover; first and second groups of wheels; and a driveline operable by a controller to connect a torque transmission path from the prime mover to the wheels. The driveline connects the second group to the torque transmission path by an auxiliary portion including first and second releasable torque transmitting devices and a prop shaft. The controller operates the auxiliary portion to switch the driveline between first and second modes such that in the first mode the prop shaft is disconnected from both the torque transmission path and second group of wheels. The driveline transitions from the first mode to the second mode responsive to a value of a vehicle operating parameter, and when a transition to the second mode is made the vehicle is operable not to transition back to the first mode from the second mode before a disconnect delay period has expired.

A method and system for blending between different torque maps of a vehicle in a smooth and progressive manner. Blending is delayed if the vehicle driver cannot detect that blending is taking place, for example, when the difference between a source map and target map is below a predetermined threshold.

A method for controlling a vehicle power train that includes a heat engine connected to the transmission of the vehicle by a clutch controlled between an open position and a closed position of the transmission by a computer of the transmission exchanging information with a computer of the heat engine. The method includes sending, in order to shut down the engine before the clutch is opened when the vehicle is in motion, the kinematic chain being closed and the injection interrupted, a message from the computer of the transmission to the computer of the engine at a first moment in time so as to synchronize an opening of the clutch and the closure of an air flap of the engine at a second moment in time subsequent to the first moment.

A method and system is disclosed for blending between torque maps of a source of propulsion of a vehicle. Embodiments of the present invention are particularly applicable to automatic selection of an alternative torque map in response to a change of vehicle operating condition, for example a change of terrain. Blending according to embodiments of the present invention may substantially avoid a step change in response of the source of propulsion as accelerator position is changed.

A control unit for a hybrid motor vehicle with a combustion engine, the motor vehicle including: an electric network; a catalytic converter including an electric heating system connected to the electric network; a battery electrically connected to the electric network; an electric machine electrically connected to the electric network. The electronic control unit being configured for: activating the generator mode of the electric machine; electrically connecting the heating system to the electric power supply network at a first time, defined after a first predetermined delay with respect to the activation time of the generator mode; and activating the motor mode of the electric machine, at a second time, defined after the first time; disconnecting the heating system from the electric network at a disconnection time, defined after the second time.

A vehicle travel control device executes trajectory following control to make the vehicle follow a target trajectory. A delay time represents control delay of the trajectory following control. A delay compensation time is at least a part of the delay time. The trajectory following control includes: displacement estimation processing that estimates a displacement of the vehicle in the delay compensation time; and delay compensation processing that corrects a deviation between the vehicle and the target trajectory based on the estimated displacement to compensate the control delay. The displacement estimation processing is effective in an effective period and ineffective in an ineffective period. When the ineffective period is included in the delay time of the trajectory following control, the displacement estimation processing is executed in a temporary mode by using sensor-detected information in the effective period without using the sensor-detected information in the ineffective period.