Abstract: A display system for a vehicle includes a display unit mounted to the vehicle and is selectively operable in a first mode as a holographic display and in a second mode as a mirror. Holographic images may include rear view images obtained from a camera or computer generated graphics. Holographic images are displayed at a virtual image plane behind the display to reduce the operator's eyes accommodation.
Abstract: Robotic systems are provided for flexibility in assembly operations. A robotic system includes a suction module having a front side with a face shaped to match a mating component and a rear side with a coupling for a suction line. Openings extend through the face. The suction module defines internal passages connecting the coupling with the at least one opening through the face. An end-effector has a base plate, a mounting plate selectively moveable relative to the base plate, and a clamp. The suction module is selectively mounted to the mounting plate and releasably secured by the clamp. An actuator is mounted to selectively move the mounting plate and the suction module relative to the base plate.
Abstract: A vehicle stalactite passive lubrication system includes a drive unit having an electric motor and a gear. A sump has a sump extension. A lubricant is collected in the sump for gravity flow into the sump extension. A stalactite member is fixed to the drive unit and is positioned above an element to be filled with a fluid, lubricated or cooled. The stalactite member is directed downwardly toward the sump with the lubricant splashed by gear rotation collected on neighboring walls and the stalactite member and directed downwardly by gravity into the sump or target element. The stalactite member includes: a drip edge oriented at an angle to a horizontal plane; and a tip defining an end of the drip edge. The angle is selected to direct the lubricant to discharge off the stalactite member at the tip as a lubricant stream into the sump or target element.
Type:
Grant
Filed:
September 24, 2020
Date of Patent:
May 30, 2023
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Goro Tamai, Robert P. McCleary, Marc R. Yarnall, David J. Varda
Abstract: Evaporative emission purge control systems and methods use a cost factor to incentivize operation of an internal combustion at torques favorable for purge. An evaporative emission control system is configured to collect fuel vapor. A controller determines whether an operating speed of the internal combustion engine is within a target purge region that is bounded by a lower speed threshold and an upper speed threshold of the internal combustion engine. When the operating speed of the internal combustion engine is within the target purge region, the controller applies a cost factor to operating points for the internal combustion engine, and based on the cost factor, the operating points are set to include an operating torque for the internal combustion engine to generate an intake pressure of the internal combustion engine at a level below atmospheric pressure for a purge of the evaporative emission control system.
Type:
Grant
Filed:
July 11, 2022
Date of Patent:
May 30, 2023
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Yiran Hu, Kee Y Kim, Jacob Kyle Lobbestael
Abstract: Methods and systems for flex fuel engines that have both port fuel injection and direct injection. Operating an engine system includes determining a percent of ethanol in a fuel and determining whether the percent of ethanol is greater than a predetermined threshold. When the percent of ethanol is greater than the predetermined threshold, fuel is supplied only through the direct injection injectors. When the percent of ethanol is not greater than the predetermined threshold, fuel is supplied through a combination of the direct injection injectors and port fuel injection injectors.
Abstract: Control of an AC motor includes rotation over an operating speed range with the output from an inverter by operating the inverter at switching frequencies that vary in proportion to rotor speed. The operating speed range is parsed into a plurality of speed regions and the switching frequencies within each operating speed region may correspond to a respective pulse ratio that is different from the respective pulse ratio corresponding to an adjacent speed region.
Type:
Grant
Filed:
October 2, 2020
Date of Patent:
May 30, 2023
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Song He, Brent S. Gagas, Brian A. Welchko, Kerrie M. Spaven
Abstract: An augmented reality head-up display system for displaying graphics upon a windscreen of a vehicle includes one or more image-capturing devices that capture image data of an environment surrounding the vehicle, a graphic projection device for generating images upon the windscreen of the vehicle, and a controller in electronic communication with the one or more image-capturing devices and the graphic projection device. The controller executes instructions to receive object detection data indicating a current position of objects located within the environment surrounding the vehicle. The controller executes instructions to compare the current position of the objects within the environment with a visual location of the objects within the environment determined based on the image data to identify a visually occluded object located within the environment. In response to identifying the visually occluded object, the controller determines a contextual graphic that signifies the visually occluded object.
Type:
Grant
Filed:
March 23, 2022
Date of Patent:
May 30, 2023
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
John P. Weiss, Joseph F. Szczerba, Omer Tsimhoni, Jeffrey Rupert Cooke
Abstract: A method and system for estimating state of charge of a lithium battery cell of a vehicle is provided. The method comprises providing a non-linear function of the lithium battery cell, a normalized lithium surface density and an actual voltage at a current of the lithium battery cell having an internal resistance. The method further comprises determining an actual lithium surface density based on the actual voltage relative to an inverse of the non-linear function. The method further comprises determining a varying parameter based on the actual lithium surface density relative to a first diffusion model. The method further comprises determining a predicted lithium surface density based on the varying parameter relative to a second diffusion model. The method further comprises determining an estimated state of charge of the lithium battery cell when a difference between the predicted and actual lithium surface densities is less than a first threshold.
Abstract: A drive system includes an electric machine that generates a torque. An output shaft rotates bi-directionally and receives the torque. A coupling is disposed between the electric machine and the output shaft. The coupling includes a torque converter that multiplies the torque. One clutch transfers the torque from the electric machine to the torque converter, when the electric machine operates in a first rotational direction. Another clutch transfers the torque from the electric machine to the torque converter, when the electric machine operates in a second rotational direction that is opposite to the first rotational direction. A gearset includes a number of meshing gears and is disposed between the electric machine and the output shaft to transfer the torque to the output shaft.