Abstract: Bearing impedance in a rotary electric machine may be estimated by isolating bearings from a frame with a dielectric pad, determining a pad capacitance, supporting the rotor by an inner race of the bearing, operating the rotary electric machine, measuring bearing inner race and outer race voltages, measuring current bypassing the dielectric pad, and estimating bearing capacitance and resistance based upon the pad capacitance, the measured and the measured current.

Abstract: A system for implementing a secure boot event includes a system on a chip (SoC). The SoC includes key hashes stored within one-time programmable memory. Each of the key hashes is configured for use with one of a plurality of candidate authentication key sets. The SoC further includes firmware stored within RAM. The firmware includes a secondary bootloader, a plurality of public keys, and corresponding signatures. The public keys and corresponding signatures are configured for use with one of the key sets. The SoC further includes a primary bootloader utilizing fuses stored within the programmable memory. The fuses activate a selected key hash based upon an ecosystem in which the system is to operate. The selected hash and a corresponding public key and signature define an active authentication key set. During the event, the primary bootloader utilizes the active authentication key set to authenticate a downloaded update to the firmware.

Abstract: A rotor for a reluctance machine includes a rotor body having cavities defined by inner surfaces of the rotor body, a filler disposed within the cavities, and an adhesive coating that covalently bonds the filler to the inner surfaces of the rotor body. The adhesive coating exhibits a composite structure including a continuous matrix component and a discontinuous organic component dispersed throughout the matrix component, wherein the matrix component comprises an inorganic siloxane network and the organic component comprises a plurality of organic groups bonded to the inorganic siloxane network. The adhesive coating is formed on the inner surfaces of the rotor body by depositing a precursor composition on the inner surfaces of a rotor body and exposing the precursor composition to a plasma. The precursor composition comprises an organofunctional silane or a hydrolysate thereof.

Abstract: An immersion cooling system for a battery system includes a battery enclosure and G battery cell groups arranged in the battery enclosure. Each of the G battery cell groups include C battery cells, where G and C are integers greater than one. A plurality of dividers are arranged between each of the G battery cell groups. A gas manifold removes vent gases from each of the G battery cell groups.

Abstract: A distributed learning system of a vehicle includes: a control module configured to: control a plant of the vehicle using a policy; send signals to a learning module including information on an impact of the control on the plant; and selectively control the plant using exploratory control; and the learning module, where the learning module is separate from the control module and is configured to selectively update the policy based on (a) the signals from the control module, (b) state parameters resulting from the control of the plant using the policy, and (c) performance feedback determined based on the control of the plant using the policy and the selective control of the plant using exploratory control, where the control module is configured to receive the exploratory control from the learning module.

Abstract: In exemplary embodiments, methods and systems are provided that include one or more underbody cameras and a processor for a vehicle. The underbody cameras are configured to obtain camera images under the vehicle. The processor is coupled to the one or more underbody cameras, and is configured to at least facilitate: performing image processing for the camera images; and determining a ride height, a measure of weight on the vehicle, or both, based on the camera images from the one or more underbody cameras and the processing thereof via the processor.

Abstract: A fastener for attaching a first part and a second part includes a body comprising a first body portion, a second body portion, a flange arranged between the first body portion and the second body portion and extending radially outwardly from the body. A bore extends in an axial direction through the body and including an inner surface with threads. A plurality of splines extend radially outwardly from the second body portion and is configured to prevent rotation when the second body portion is inserted into an opening in the first part. An opening to the bore at the second body portion defines a concentric edge and an inclined plane extending from the concentric edge.

Abstract: Methods and systems are provided for displaying a scene for a vehicle towing a trailer. A method includes: determining, by the processor, an angle of the trailer relative to the vehicle; determining, by the processor, a simulated trailer based on the angle of the trailer; determining, by the processor, a projection matrix based on the simulated trailer; generating, by the processor, scene data based on image data from a camera of the vehicle and image data from a camera of the trailer using the projection matrix; and generating, by the processor, display data to display the scene to an occupant of the vehicle based on the scene data.

Abstract: A battery system includes a multi-cell rechargeable energy storage system (RESS) and an electronic controller configured to process RESS cell data. The controller is programmed with a battery cell open circuit voltage (OCV) versus state of charge (SOC) data table used to calculate a peak OCV movement for a representative battery cell at predetermined capacity and maximum discharge/charge rate. The controller is configured to acquire voltage data for one of the cells during active RESS cycling. The controller is also configured to pass the acquired voltage data through a first-order lag filter algorithm to generate an overpredicted OCV for the subject cell. The controller is additionally configured to determine an overpredicted SOC value for the subject cell in the data table using an OCV value from the overpredicted OCV. Furthermore, the controller is configured to regulate the RESS using the determined overpredicted SOC value for the subject cell.

Abstract: Presented are thermal management systems with passive quenching sacks for cooling battery assemblies, methods for making/using such systems, and vehicles equipped with such systems. A passive thermal management (PTM) system is presented for cooling a battery assembly, such as a traction battery pack with a battery case containing stacked battery cells. The PTM system includes a fluid container that mounts inside the battery assembly, interposed between the battery case and battery cells. The fluid container stows therein a dielectric coolant fluid and has multiple fluid ports that fluidly connect to the battery cells to dispense thereto the coolant fluid. Thermomechanical plugs, such as wax, film, or smart-material barriers, seal the fluid container ports and passively open (e.g., melt, bend, disintegrate, expand, etc.) at a predefined temperature to thereby unseal the fluid ports such that the coolant fluid is fed from the fluid container into the battery cells.

Abstract: A system for detection and reporting of data signal interference includes a plurality of vehicles. Each vehicle includes a global navigation satellite system (GNSS) receiver receiving a GNSS signal, a cellular modem configured for sending and receiving data over a wireless communication network, and a computerized detection and reporting controller. The controller includes programming to monitor the GNSS signal, analyze the GNSS signal to identify a presence of radio frequency (RF) interference, and generate a report of an RF interference event to a remote server device based upon the presence of the interference. The system further includes the server device including programming to monitor the report of the interference event from each of the vehicles, identify a threshold RF interference event based upon the report of the RF interference event from each of the plurality of vehicles, and command a remedial action based upon the threshold RF interference event.

Abstract: A method of retrieving a lost item from a compartment to an owner of the lost item is provided. The method comprises detecting the lost item in the compartment to define an item image of the lost item relative to the compartment, updating an inventory list of lost objects, and identifying at least one potential user of the lost item. The method further comprises providing notification to the at least one potential user and providing viewable access of the item image. The method further comprises verifying ownership of the lost item to define the owner of the lost item, determining a preferred pickup location for the owner, storing the lost item at the preferred location defining a stored item, and confirming identity of the owner for retrieval of the stored item at the preferred location. The method further comprises allowing access to the stored item from the preferred location.

Abstract: A method is designed to provide platooning information using a multi-focal plane augmented reality display of a host vehicle. The method includes receiving platooning data from at least one of a plurality of remote vehicles. Each of the plurality of remote vehicle is part of a platoon. The platooning data includes locations, trajectories, and headways of each of the plurality of remote vehicles. The method further includes determining whether the platoon is within a predetermined distance from the host vehicle using the platooning data. Further, the method includes transmitting a command signal to the multi-focal plane augmented reality display of the host vehicle to display a virtual image on the multi-focal plane augmented reality display. The virtual image is indicative of a platooning action related to the platoon that is within the predetermined distance from the host vehicle.

Abstract: A door check system of a vehicle includes a door check assembly having a check body securable to a door of the vehicle, a check link extending through a check body opening of the check body and an adjustment mechanism positioned at a body of the vehicle. The adjustment mechanism includes a housing defining a housing opening, and an adjustment slide positioned in the housing opening and slidable moveable therein. The adjustment slide is secured to the check link. An adjustment feature is secured to the adjustment slide and extends through an adjustment slot in the housing. Moving the adjustment feature along the adjustment slot moves the adjustment slide in the housing opening to change an effective length of the check link.

Abstract: A fluidic coolant system for a fuel cell stack that includes a fluidic pump, a heat exchanger, and an ion exchange filter housing assembly is described. A fluidic outlet of the heat exchanger is fluidly coupled to the fluidic pump, and a fluidic inlet of the heat exchanger is fluidly coupled to the fuel cell stack. The fluidic pump is arranged to supply coolant from the heat exchanger to the fuel cell stack and the ion exchange filter housing assembly.