Abstract: A transmission includes a housing defining an actuator cavity, a plurality of clutches disposed within the housing and configured to be engaged in various combinations to generate gear ratios corresponding to forward speeds of the transmission, and an actuator assembly configured to selectively engage one clutch of the plurality of clutches, the actuator assembly including a piston slidingly disposed within the actuator cavity. An anti-rotation assembly is configured to prevent rotation of the piston within the actuator cavity, the anti-rotation assembly including a stop and a projection. The projection is coupled to and extends outwardly from an interior surface of the piston, and the stop is grounded to the housing and includes a bore configured to receive a distal end of the projection to thereby prevent rotation of the projection and piston.

Abstract: A biometric authentication system and related method includes an activation component, a camera and a controller. The activation component can be configured to receive an input from a prospective user of the vehicle and activate the biometric authentication system based on the input satisfying the input criteria. The camera can be configured to acquire an image of the prospective user subsequent to activation of the biometric authentication system. The controller can be configured to (i) store an image of the at least one preauthorized user of the vehicle, (ii) compare an acquired image of the prospective user with an image of the at least one preauthorized user; and (iii) unlock a door of the vehicle based on the image of the prospective user successfully matching an image of at least one preauthorized user.

Abstract: Proprioceptive torque distribution control systems and methods for an electrified vehicle having a multi-motor electrified powertrain including two or more electric motors involve an accelerometer sensor system configured to measure accelerations of the electrified vehicle relative to three perpendicular axes, and a controller configured to determine four relative degrees of contact by four wheels of the electrified vehicle with a ground surface, respectively, based on the measured accelerations and travel of a suspension of the electrified vehicle, and control a distribution of a total amount of drive torque generated by the multi-motor electrified powertrain between the four wheels of the electrified vehicle based on their respective four relative degrees of contact with the ground surface to thereby improve performance and stability of the electrified vehicle.

Abstract: An adaptive feedforward control method for an electrified powertrain including a torque converter includes determining a desired input speed for a torque converter based on the set of operating parameters of the electrified powertrain, determining minimum and maximum torques for an impeller of the torque converter based on the set of operating parameters of the electrified powertrain, determining a raw feedforward torque for the torque converter impeller based on the desired input speed for the torque converter and a speed of a turbine of the torque converter, determining a final feedforward torque for the torque converter impeller based on the raw feedforward torque for the torque converter impeller and the minimum and maximum torques for the torque converter impeller, and controlling an electric motor of the electrified powertrain based on the final feedforward torque for the torque converter impeller.

Abstract: High voltage battery contactor welding prevention techniques for an electrified vehicle include, in response to a request to perform a high voltage connection procedure, utilizing a supervisory controller to monitor a voltage of the low voltage battery system to determine whether a low voltage battery system of the vehicle has a voltage level sufficient to open/hold the set of contactors during the high voltage connection procedure, when the low voltage battery system has sufficient voltage, commanding by the supervisory controller to a sub-controller to perform the high voltage connection procedure, and when the low voltage battery system does not have sufficient voltage, displaying a low voltage indicator for a user to recharge the low voltage battery system before the high voltage connection procedure can occur.

Abstract: Speed control techniques include, based on a set of target speed inputs indicative a target speed for an electric motor, determining a set of profiling inputs including (i) the target speed and (ii) a set of desired acceleration calibrations, performing jerk-based profiling based on the set of profiling inputs to determine at least one of an open-loop acceleration command and a profiled target speed, determining a closed-loop torque adjustment based on the profiled target speed and a measured speed of the electric motor, determining an electric motor torque command based on the open-loop acceleration command and the closed-loop torque adjustment, and controlling the electric motor based on the respective electric motor torque command to improve vehicle responsiveness in reaching the target speed.

Abstract: An electrified vehicle includes a vehicle door, an electronic door latch system configured to selectively open the vehicle door, and an electrified powertrain configured to generate drive torque. A high voltage battery system for powering the electrified powertrain includes one or more battery contactors to selectively enable the high voltage battery system. A controller is configured to control operation of the vehicle and is in communication with the electronic door latch system. Upon receiving a door open request from the electronic door latch system, the controller activates the one or more battery contactors to enable the high voltage battery system only when the door open request is initiated from an outside of the vehicle.

Abstract: An internal combustion engine includes a cylinder head with an exhaust manifold configured to supply exhaust gas through a main exhaust outlet to a main exhaust aftertreatment system having a main catalytic converter, a bypass passage in fluid communication with the exhaust manifold via a bypass port, a bypass catalytic converter disposed within the bypass passage, and a dual-acting valve assembly configured to move between a first position that seals the bypass port, and a second position that seals the main exhaust outlet. During cold start, long idle, and/or low main catalytic converter temperature conditions, the dual-active valve assembly is moved to the second position to direct exhaust flow through the bypass passage and the bypass catalytic converter to reduce emissions.

Abstract: A simulated shift system for a battery electric vehicle (BEV) includes a set of sensors configured to monitor a set of parameters indicative of driver input by a driver of the BEV and a controller configured to control an electric drive module (EDM) of the BEV, the EDM comprising a gear system connected to an electric motor and being configured to output drive torque to a driveline of the BEV, receive the monitored set of parameters, and, based on the monitored set of parameters, selectively control the EDM to adjust drive torque output therefrom to simulate transmission shift operations of a predetermined conventional automotive automatic transmission having four or more speeds.

Abstract: Over-the-air (OTA) update control techniques for a vehicle include determining a set of available communication protocols from a plurality of different communication protocols wherein the set of available communication protocols are those of the plurality of different communication protocols that the controller is configured for receiving OTA update data from the remote update server via the communication transceiver, for each of the set of available communication protocols, determining a desirability score, wherein each desirability score indicates a level of desirability of the available communication protocol for transferring the OTA update data, selecting the communication protocol having a highest desirability score from the set of available communication protocols, controlling receiving of the OTA update data from the remote update server via communication transceiver and the selected communication protocol, and updating software or firmware executable by the controller using the received OTA update dat

Abstract: A control system for an engine comprising a turbocharger includes, a cold light off catalyst (CLOC), a CLOC valve, and a controller. The CLOC is positioned in a bypass passage around a turbine of the turbocharger. The CLOC valve selectively routes exhaust flow from the engine between the turbine and the CLOC. The controller is configured to command the CLOC valve to operate in a CLOC mode whereby exhaust flow is routed to the CLOC; determine, based on operation in the CLOC mode, a position of the CLOC valve; determine, based on the position of the CLOC valve, an available torque of the engine; and set a maximum available engine torque based on the determined available torque of the engine.

Abstract: A switchable battery disconnect unit (BDU) system for an electrified vehicle includes a switchable BDU for a high voltage battery system of the electrified vehicle, the switchable BDU including one or more protection devices that each include both a contactor and an integrated circuit breaker, and a controller configured to control the switchable BDU to switch between 400 Volts (400V) and 800V direct current (DC) modes for powering an electrified powertrain of the electrified vehicle and for recharging the high voltage battery system and monitor and reset the protection device in response to an actuation of the integrated circuit breaker, wherein the protection device does not include a replaceable thermal fuse.

Abstract: An electric drive module (EDM) configured to generate and transfer drive torque to a driveline for propulsion of an electric vehicle. The EDM includes a gearbox assembly, an electric motor having a rotor and a stator, and a thermal management system. The thermal management system includes a fluid circuit configured to supply a fluid to the gearbox assembly, the rotor, and the stator, and a pump configured to direct the fluid through the fluid circuit. A valve is disposed on the fluid circuit and configured to selectively move between (i) a closed position where the fluid is not supplied to the stator, and (ii) an open position where the fluid is supplied to the stator for cooling thereof.

Abstract: An electric machine configured to generate and transfer drive torque to a driveline for propulsion of an electric vehicle includes a gearbox assembly, an electric motor having a rotor and a stator having end windings, and a thermal management system. The thermal management system includes a first end plate disposed at an axial end of the rotor. The first end plate has a central hub and an overhang. The overhang includes an outwardly extending radial rim and a lip. The radial rim includes an outer surface, an inner surface, and at least two passages defined therethrough. The first end plate facilitates cooling of the electric motor by directing fluid (i) off of the outer surface of the radial rim and onto an inner diameter of the end windings, and (ii) through the at least two passages and onto the inner diameter of the end windings.

Abstract: Multi-loss torque control systems and methods for an electric motor of an electrified vehicle include determining a torque command for the electric motor from a set of sensors, determining a speed loss for the electric motor based on an actual speed and a desired heat energy loss for the electric motor from the set of sensors, generating current commands for the electric motor based on its determined torque command and speed loss, controlling the electric motor using the generated current commands, capturing heat energy lost by the electric motor using a heat exchanger system, and using the captured heat energy in the heat exchanger system to heat a component of the electrified vehicle.

Abstract: A system and method of controlling a powertrain to protect a high voltage cable by determining a temperature characteristic for a busbar, determining a temperature characteristic adjacent to a component, and determining a current through the high voltage cable. Thereafter, the method reduces an operating characteristic of the powertrain based on the temperature characteristic for the busbar, the temperature characteristic adjacent to the component, and the current.

Abstract: Vehicle perception techniques include applying a 3D DNN to a set of inputs to generate 3D detection results including a set of 3D objects, transforming the set of 3D objects onto a set of images as a first set of 2D bounding boxes, applying a 2D DNN to the set of images to generate 2D detection results including a second set of 2D bounding boxes, calculating mean average precision (mAP) values based on a comparison between the first and second sets of 2D bounding boxes, identifying a set or corner cases based on the calculated mAP values, and re-training or updating the 3D DNN using the identified set of corner cases, wherein a performance of the 3D DNN is thereby increased without the use of expensive additional manually and/or automatically annotated training datasets.

Abstract: An engine system includes an engine including intake and exhaust camshafts, a transmission, a turbocharger including a compressor and a turbine, a surge valve to selectively bypass the compressor, a main exhaust aftertreatment system with a main catalytic converter, and a light-off catalyst bypass system with a bypass valve configured to selectively provide exhaust gas to a bypass passage and a bypass catalytic converter. An emissions control system includes a controller configured to monitor a temperature of the main catalytic converter to determine if the temperature is below a light-off temperature, move the bypass valve to an open position to provide exhaust gas flow through the bypass passage and bypass catalytic converter when the main catalytic converter is below the predetermined light-off temperature, and move the surge valve to an open position to enable intake air to bypass the compressor to minimize pressure loss during a cold catalyst mode.