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51.发明申请公开(公告)号：US20220289044A1
公开(公告)日：2022-09-15
申请号：US17201536
申请日：2021-03-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Aubrey W. Downs, JR. , Christopher L. Jones , James M. Faucett , Yiran Hu , Ruixing Long , Brent S. Gagas , Wei Wang
Abstract: Presented are control systems for operating dual-independent drive unit (DIDU) powertrains, methods for making/operating such systems, and electric-drive vehicles with fault management and mitigation for DIDU axles. A method of operating a motor vehicle with a DIDU axle includes monitoring first and second drive units (DU) that are independently operable to drive respective road wheels via respective axle shafts of the DIDU axle. A vehicle controller receives an indication of a fault condition in the first DU from a fault sensing module and responsively determines a fault type for the fault condition. The controller ascertains the vehicle's current speed and determines a respective torque limit for each of the DIDU drive units based on the fault type and current vehicle speed. Torque output of the first DU is concomitantly constrained to a first torque limit while torque output of the second DU is constrained to a second torque limit.
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52.发明申请公开(公告)号：US20220258723A1
公开(公告)日：2022-08-18
申请号：US17175903
申请日：2021-02-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yiran Hu , Ruixing Long , Kevin J. Storch , Robert C. Gibson , Bharath Pattipati , Paul G. Otanez
Abstract: A motor vehicle includes first and second drive axles coupled to respective sets of road wheels, torque actuators inclusive of rotary electric machines configured to transmit respective output torques to the drive axles, and a main controller in communication with the torque actuators. The controller receives vehicle inputs indicative of a total longitudinal and lateral motion request. In response, the controller calculates a total longitudinal torque request and/or a total longitudinal speed request, a yaw rate request, and a lateral velocity request, then determines, using a cost optimization function, a torque vector for allocating the total longitudinal torque request and/or speed request, the yaw rate request, and the lateral velocity request to the drive axles within predetermined constraints. The controller also transmits a closed-loop control signal to each torque actuator or local controllers thereof to apply the torque vector via the drive axles.
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公开(公告)号：US20220227237A1
公开(公告)日：2022-07-21
申请号：US17153244
申请日：2021-01-20
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Paul G. Otanez , Yiran Hu , Nathaniel S. Michaluk , Krunal P. Patel , Adam J. Heisel , Kevin J. Storch , Jacob M. Knueven , Matthew Yard
Abstract: A method of operating a vehicle includes a vehicle controller receiving an operator-input vehicle control command with an associated torque request, and identifying any propulsion actuator constraints that limit a brake torque capacity available from the vehicle powertrain. Using the propulsion actuator constraint(s) and torque request, the controller determines a propulsion brake torque distribution for the vehicle's road wheels and a maximum brake torque capacity for the powertrain actuator(s). A first brake torque request is determined using the propulsion brake torque distribution and a vehicle control mode of the powertrain system, and a second brake torque request is determined using the maximum brake torque capacity and the vehicle control mode. A friction brake torque command is determined by arbitrating between the first and second brake torque requests. The vehicle controller transmits the friction brake torque command to the friction brake system and a powertrain brake command to the powertrain actuator(s).
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公开(公告)号：US11192561B2
公开(公告)日：2021-12-07
申请号：US16418658
申请日：2019-05-21
Applicant: GM Global Technology Operations LLC
Inventor： Jun Chen , Ruixing Long , Yiran Hu
Abstract: A method for controlling an actuator system of a motor vehicle includes utilizing a model predictive control (MPC) module with an MPC solver to determine optimal positions of one or more actuators of the actuator system. The method further includes receiving a plurality of actuator system parameters, and triggering the MPC solver to generate one or more control commands from plurality of actuator system parameters. The method further includes applying a cost function to reduce a steady-state tracking error in the one or more control commands from the MPC solver and applying the one or more control commands to alter positions of the one or more actuators, and applying a penalty term to the steady-state predictions of positions of the plurality of actuators to limit a difference between a steady-state prediction of the actuator system and a solution from the MPC solver.
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55.发明申请公开(公告)号：US20210095630A1
公开(公告)日：2021-04-01
申请号：US16589579
申请日：2019-10-01
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yiran Hu , David E. Edwards , Min Sun , Michael J. Paratore, JR. , Jun Chen , Eugene V. Gonze , Sergio Quelhas
Abstract: A method includes: (a) determining an engine speed of an internal combustion engine, wherein the internal combustion engine has an engine wall, and the engine wall has a wall temperature; (b) determining an engine load of the internal combustion engine; (c) determining a wall-reference temperature as a function of the engine load and the engine speed of the internal combustion engine; and (d) adjusting, using a cooling system, a volumetric flow rate of a coolant flowing through the internal combustion engine to maintain the wall temperature at the wall-reference temperature.
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Patent Agency Ranking
公开(公告)号：US10676088B2
公开(公告)日：2020-06-09
申请号：US16003223
申请日：2018-06-08
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yiran Hu , Junfeng Zhao , Steven E. Muldoon , Chen-Fang Chang
IPC: B60W30/14
Abstract: A system and method are provided for operating a powertrain control system. The method includes receiving data measured from a plurality of sensors, the measured data relating to distance dependent speed values, and receiving information from one or more vehicle modules, the vehicle module information relating to distance independent speed values. The method further includes building a speed trajectory profile for a horizon window that includes a plurality of speed change regions represented by at least some distance dependent speed values or at least some distance independent speed values, and creating a synthesized speed profile for the horizon window by processing the speed trajectory profile. The synthesized speed profile optimizes efficiency of the powertrain control system at each of the plurality of speed change regions.
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公开(公告)号：US10458349B2
公开(公告)日：2019-10-29
申请号：US15840781
申请日：2017-12-13
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yiran Hu , Chen-fang Chang , Scott J. Chynoweth , Douglas R Verner , Feilong Liu
Abstract: A method of start/stop engine control based on vehicle location and driving situation includes identifying the location and driving situation of a host vehicle, and classifying the location and the driving situation of the host vehicle based on the identified location and driving situation. The engine start/stop control is based on at least one of the location classification and driving situation classification.
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公开(公告)号：US20190271608A1
公开(公告)日：2019-09-05
申请号：US15909093
申请日：2018-03-01
Applicant: GM Global Technology Operations LLC
Inventor： Yue-Yun Wang , Yiran Hu
Abstract: A method of estimating a compressor inlet pressure for a turbocharger includes: measuring an ambient temperature of air flowing into the compressor; measuring a flow rate of the air into the compressor; measuring a boost pressure of the air from the compressor to an engine; determining a speed of a turbine of the turbocharger; defining a pressure ratio as the ratio of the boost pressure to the compressor inlet pressure; defining a function as the function of the compressor flow rate, the ambient temperature, the compressor inlet pressure and the turbine speed; and equating the pressure ratio and the function and recursively solving for the compressor inlet pressure.
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59.发明授权公开(公告)号：US10273928B1
公开(公告)日：2019-04-30
申请号：US15796019
申请日：2017-10-27
Applicant: GM Global Technology Operations LLC
Inventor： Junfeng Zhao , Jun-mo Kang , Yiran Hu
Abstract: Disclosed are model-based combustion timing systems and control logic for engine assemblies, methods for making/operating such engine assemblies, and motor vehicles with spark-ignited engine assemblies implementing model-based combustion timing. A method for controlling torque output of an engine assembly includes receiving a requested torque demand for the engine, and determining a current fuel command and valve timing for the engine's power cylinder(s). A first math model is used to determine a desired CA50 based on the requested torque demand, a power cylinder indicated mean effective pressure (IMEP), an expander cylinder IMEP, and the current fuel command/valve timing. A second math model is used to determine a maximum brake torque (MBT) CA50 based on power cylinder and expander cylinder IMEPs, and current fuel command/valve timing. An engine control unit determines a final spark timing based on a correlation between the desired CA50 and MBT CA50, modified by a spark timing gain.
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公开(公告)号：US10215576B2
公开(公告)日：2019-02-26
申请号：US15247243
申请日：2016-08-25
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jun-mo Kang , Yiran Hu , Steven E. Muldoon , Chen-fang Chang , Dongxu Li , Junfeng Zhao
Abstract: A method for generating energy-optimized travel routes with a vehicle navigation system includes generating candidate travel routes between a route origin and one or more route destinations, and then dividing each candidate travel route into a plurality of route segments. The method includes estimating expected travel speeds along each segment using cloud information and calculating an expected energy efficiency over each of the candidate travel routes using one or more vehicle-specific energy efficiency models. The travel routes are displayed via the navigation system, including a trace of the energy-optimized travel routes and an expected or relative energy efficiency along the energy-optimized travel routes. A vehicle includes the navigation system and a powertrain. A powertrain controller may control vehicle speed over a selected route to maintain an optimally energy-efficient speed.
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