Inventor
DUAN CHENGWU
CN58 patents
Patents
50 patentsUS10086833B1Oct 2, 2018
Automobile door open hazard warning system and methods
GM GLOBAL TECH OPERATIONS LLC36 citations93
US11603925B1Mar 14, 2023
Hydraulically actuated clutch system and control logic for torque converter assemblies
GM GLOBAL TECH OPERATIONS LLC5 citations75
US11804744B2Oct 31, 2023
Axial flux electric machine including insulated hybrid stator core with soft magnetic composite portions and laminated layers
GM GLOBAL TECH OPERATIONS LLC2 citations73
US11594929B2Feb 28, 2023
Axial flux motor with distributed winding
GM GLOBAL TECH OPERATIONS LLC3 citations73
US11305675B2Apr 19, 2022
Disturbance cancellation and generation seat
GM GLOBAL TECH OPERATIONS LLC2 citations73
US11204084B2Dec 21, 2021
Continuously variable transmission including a layshaft gearset
GM GLOBAL TECH OPERATIONS LLC2 citations73
US10974593B2Apr 13, 2021
Powertrain for an electric vehicle
GM GLOBAL TECH OPERATIONS LLC5 citations73
US10941840B2Mar 9, 2021
Continuously variable transmission with wedge actuation mechanism
GM GLOBAL TECH OPERATIONS LLC3 citations73
US10651740B1May 12, 2020
Buck-boost converter for an electric drive
GM GLOBAL TECH OPERATIONS LLC2 citations73
US10576837B2Mar 3, 2020
Electrical drive unit
GM GLOBAL TECH OPERATIONS LLC3 citations73
US10458490B2Oct 29, 2019
Cycle lock system and method
GM GLOBAL TECH OPERATIONS LLC3 citations73
US10295056B2May 21, 2019
Mode transition control in a CVT with fixed gear functionality
GM GLOBAL TECH OPERATIONS LLC2 citations73
US10267391B2Apr 23, 2019
Continuously variable transmission with wedge actuation mechanism
GM GLOBAL TECH OPERATIONS LLC4 citations73
US10125866B2Nov 13, 2018
Transmission for a powertrain system
GM GLOBAL TECH OPERATIONS LLC2 citations73
US9797321B2Oct 24, 2017
Internal combustion engine with elevated compression ratio and multi-stage boosting including a variable-speed supercharger
GM GLOBAL TECH OPERATIONS LLC4 citations73
US11025116B2Jun 1, 2021
Centrifugal fluid-cooled axial flux motor
GM GLOBAL TECH OPERATIONS LLC4 citations72
US10438422B1Oct 8, 2019
Methods and systems for controlling use of shared machines
GM GLOBAL TECH OPERATIONS LLC5 citations72
US10132391B2Nov 20, 2018
Continuously variable transmission
GM GLOBAL TECH OPERATIONS LLC3 citations72
US12036886B2Jul 16, 2024
Controlling a DC-DC converter for DC charging
GM GLOBAL TECH OPERATIONS LLC2 citations71
US12316203B2May 27, 2025
Axial flux motor assemblies with integrated power electronics and double-sided cooling
GM GLOBAL TECH OPERATIONS LLC0 citations63
US11646611B2May 9, 2023
Locking mechanism for segmented stator core
GM GLOBAL TECH OPERATIONS LLC1 citations63
US11569713B2Jan 31, 2023
Axial flux motor including system for circulating coolant through air gap between stator and rotor
GM GLOBAL TECH OPERATIONS LLC1 citations63
US11254223B2Feb 22, 2022
Operating mode optimization for electric propulsion system with downsized DC-DC converter
GM GLOBAL TECH OPERATIONS LLC1 citations63
US10879754B2Dec 29, 2020
Axial flux motor having an insulated rotor
GM GLOBAL TECH OPERATIONS LLC1 citations63
US10626970B2Apr 21, 2020
Multi-mode transmission including a continuously variable transmission
GM GLOBAL TECH OPERATIONS LLC1 citations63
US10473213B2Nov 12, 2019
Method of controlling clamping of wedge-actuated CVT and powertrain with wedge-actuated CVT
GM GLOBAL TECH OPERATIONS LLC1 citations63
US10473195B2Nov 12, 2019
Continuously-variable transmission
GM GLOBAL TECH OPERATIONS LLC1 citations63
US10473200B2Nov 12, 2019
Continuously variable transmission with wedge actuation mechanism
GM GLOBAL TECH OPERATIONS LLC1 citations63
US12301060B2May 13, 2025
Rotors for electric motors
GM GLOBAL TECH OPERATIONS LLC1 citations62
US11971455B2Apr 30, 2024
State of charge and state of health assessment of a mixed chemistry battery
GM GLOBAL TECH OPERATIONS LLC0 citations62
US11936239B2Mar 19, 2024
Bi-material permanent magnets for electric machines
GM GLOBAL TECH OPERATIONS LLC0 citations62
US11876406B2Jan 16, 2024
Direct contact cooling of axial flux motor stator
GM GLOBAL TECH OPERATIONS LLC0 citations62
US11715999B2Aug 1, 2023
Method of making a laminated stator of an axial flux motor
GM GLOBAL TECH OPERATIONS LLC0 citations62
US11621621B2Apr 4, 2023
Magnets, pole shoes, and slot openings of axial flux motor
GM GLOBAL TECH OPERATIONS LLC1 citations62
US11381123B2Jul 5, 2022
Hybrid stator core component design for axial flux motor
GM GLOBAL TECH OPERATIONS LLC1 citations62
US11205930B2Dec 21, 2021
Axial flux motor assemblies with variable thickness rotors and rotors having interiorly disposed magnets
GM GLOBAL TECH OPERATIONS LLC0 citations62
US12512532B2Dec 30, 2025
Battery pack having an integrated cooling system
GM GLOBAL TECH OPERATIONS LLC0 citations61
US12567772B2Mar 3, 2026
Electrical machine
GM GLOBAL TECH OPERATIONS LLC0 citations59
US12266997B2Apr 1, 2025
Thermal bridge for an electric machine
GM GLOBAL TECH OPERATIONS LLC0 citations59
US12438426B2Oct 7, 2025
Adjustable air gap axial flux motor
GM GLOBAL TECH OPERATIONS LLC0 citations58
US12575064B2Mar 10, 2026
Systems and methods for cooling power electronics using a thermosyphon
GM GLOBAL TECH OPERATIONS LLC0 citations52
US12397680B2Aug 26, 2025
Active and passive heat flux control systems for two-phase immersive cooling for high power density electric vehicle components
GM GLOBAL TECH OPERATIONS LLC0 citations52
US12294280B2May 6, 2025
Integrated axial flux motor assemblies including planetary gearsets
GM GLOBAL TECH OPERATIONS LLC0 citations52
US12246606B2Mar 11, 2025
Multi-function DC-DC converter for battery electric vehicles
GM GLOBAL TECH OPERATIONS LLC0 citations52
US12104682B2Oct 1, 2024
Hydraulic system and control logic for torque converter assemblies
GM GLOBAL TECH OPERATIONS LLC0 citations52
US11898626B2Feb 13, 2024
System and method for bypassing a torque converter in a powertrain
GM GLOBAL TECH OPERATIONS LLC0 citations52
US11863072B2Jan 2, 2024
Efficient bypass switches for DC/DC converter
GM GLOBAL TECH OPERATIONS LLC0 citations52
US11821501B2Nov 21, 2023
System for a power take off mechanism for a powertrain system
GM GLOBAL TECH OPERATIONS LLC0 citations52
US11780421B2Oct 10, 2023
Motor and torque converter clutch control strategy for electric drive unit having motor-driven torque converter
GM GLOBAL TECH OPERATIONS LLC0 citations52
US11703113B2Jul 18, 2023
Electrified propulsion system and apparatus
GM GLOBAL TECH OPERATIONS LLC0 citations52
Showing the top 50 of 58 patents by PatentIndex Score.