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公开(公告)号：US20220212565A1
公开(公告)日：2022-07-07
申请号：US17142459
申请日：2021-01-06
Applicant: GM Global Technology Operations LLC
Inventor： Jun-mo Kang , Insu Chang
IPC: B60L58/21 , G01R31/387 , G01R31/367
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.
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Patent Agency Ranking
32.发明授权公开(公告)号：US11370435B2
公开(公告)日：2022-06-28
申请号：US16559738
申请日：2019-09-04
Inventor： Junfeng Zhao , Chen-Fang Chang , Bharatkumar Hegde , Insu Chang , Ragunathan Rajkumar
Abstract: A method for controlling automated driving operations of a vehicle includes determining vehicle origin and destination data, and generating a graphical representation of a road network with multiple candidate routes between the vehicle's origin and destination. Road-level data, including speed, turn angle, and/or gradient data, is received for each candidate route, and respective total energy uses are estimated for the vehicle to traverse across the candidate routes. Multiple candidate driving strategies, each having respective speed and acceleration profiles, are determined for the candidate route with the lowest estimated total energy use. An optimal candidate driving strategy is selected through a cost evaluation of the associated speed and acceleration profiles and forward movement simulations of the vehicle over a prediction horizon. Command signals are transmitted to the vehicle's steering and/or powertrain systems to execute control operations based on the optimal driving strategy and the candidate route with the lowest energy use.
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公开(公告)号：US11365672B2
公开(公告)日：2022-06-21
申请号：US16707290
申请日：2019-12-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Insu Chang , Min Sun , David E. Edwards
Abstract: An internal combustion engine includes an engine block, a combustion cylinder including a cylinder wall, engine oil and engine coolant. Control of the internal combustion engine includes estimating the cylinder wall temperature in a temperature state estimator, comparing the estimated cylinder wall temperature to a predetermined temperature threshold, and circulating the engine coolant in the engine when the estimated cylinder wall temperature exceeds the predetermined temperature threshold.
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公开(公告)号：US20210172369A1
公开(公告)日：2021-06-10
申请号：US16707290
申请日：2019-12-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Insu Chang , Min Sun , David E. Edwards
Abstract: An internal combustion engine includes an engine block, a combustion cylinder including a cylinder wall, engine oil and engine coolant. Control of the internal combustion engine includes estimating the cylinder wall temperature in a temperature state estimator, comparing the estimated cylinder wall temperature to a predetermined temperature threshold, and circulating the engine coolant in the engine when the estimated cylinder wall temperature exceeds the predetermined temperature threshold.
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公开(公告)号：US20210061063A1
公开(公告)日：2021-03-04
申请号：US16551064
申请日：2019-08-26
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Min Sun , Yiran Hu , David E. Edwards , Jun Chen , Insu Chang , Steven P. Moorman
IPC: B60H1/00
Abstract: Systems and methods are provided for management of a thermal system. A system for thermal management includes a thermal system with fluid conduits. A sensor is disposed to monitor an input parameter state of the thermal system. An actuator is configured to vary a flow in the fluid conduits. A controller is configured to receive a signal representative of the input parameter state; process an actuator state through a flow model of the thermal system to obtain an existing flow in the fluid conduits; process the existing flow through a thermal model of the thermal system to determine an input that reduces an error between a desired parameter state and the input parameter state; process the input through an inverse flow model to convert the input to a desired actuator state; and position the actuator in the desired actuator state.
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36.发明授权公开(公告)号：US10760523B1
公开(公告)日：2020-09-01
申请号：US16443310
申请日：2019-06-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jun-mo Kang , Hanho Yun , Insu Chang
Abstract: A system and method for controlling operation of an internal combustion engine having at least one fuel injector. A controller is configured to selectively command the at least one fuel injector to deliver a primary fuel injection of a first fuel quantity and a secondary fuel injection of a second fuel quantity. The first fuel quantity is above a predefined threshold and the second fuel quantity is at or below the predefined threshold. The controller is configured to command a primary pulse width and a secondary pulse width, based in part on a respective desired fuel injection mass and respective initialized values of fuel injector slope. Operation of the fuel injectors is controlled based in part on a converged primary fuel injector slope and a converged secondary fuel injector slope determined at partially from a comparison of a calculated fuel mass and an estimated fuel mass.
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