Gm Global Technolgoy Operations, Inc.

Ronald O Grover, Jr

Muhammad Hussain Alvi

Paul M Najt

Chandra S Namuduri

Alireza Fatemi

Hanho Yun

SeungHwan Keum

Farzad Samie

Mei Cai

Thomas W Nehl

Mahmoud H Abd Elhamid

Brian A Welchko

Rashmi Prasad

Taeyoung Han

Anthony M Coppola

Tang-Wei Kuo

Anne M Dailly

Chih-Hung Yen

Erik B Golm

Kushal Narayanaswamy

Ming Liu

Herman K Phlegm

Alok Warey

Seongchan Pack

Xiaofeng Yang

Cherian A Idicheria

Balakrishna Chinta

Tito R Huffman

Jian Gao

Elana M Chapman

Hugh W Miller

John O Waldman

A rechargeable energy storage system (RES S) including a thermal runaway propagation (TRP) mitigation system includes a housing having at least one outlet, a plurality of energy storage cells arranged in the housing, and at least one duct extending along the plurality of energy storage cells. The at least one duct is fluidically connected to the at least one outlet. A gas delivery system including a gas generation system is operable to deliver an amount of inert gas into the housing to purge gases from one or more of the plurality of energy storage cells through the at least one outlet.

Thermal runaway mitigation system for a rechargeable energy storage system arranged in a vehicle

A power control system for an electric vehicle includes a power inverter comprising a switch module including a plurality of power switches, a controller board, and a gate driver board in communication with the controller board and configured to drive gates of the plurality of switches. A first housing is made of polymer composite, encloses the power inverter, defines a first cooling cavity in thermal communication with a first surface of the switch module, and encapsulates a portion of at least one of the switch module, the controller board and the gate driver board.

Enhanced integration of power inverters using polymer composite encapsulation

A cooling system for a drivetrain of an electric vehicle includes a coolant circuit directing a flow of coolant through a first inverter and a second inverter of the drivetrain, and an adjustable flow valve positioned along the coolant circuit to selectably alter proportions of the flow of coolant directed through each of the first inverter and the second inverter. A method of operating a cooling system for a first inverter and a second inverter of a vehicle drivetrain includes commanding a speed and torque of each of the first and second inverter, and estimating losses and temperature of each of the first inverter and the second inverter as a result of the commanded speed and torque. A valve position of an adjustable flow valve operably connected to the first inverter and the second inverter is selected, and a change of the valve position is commanded.

Active coolant flow control in multi-inverter systems

A method for early detection of a stochastic preignition (SPI) in an internal combustion engine includes monitoring sensor data from a sensor that is coupled to the internal combustion engine of a vehicle, determining whether a SPI event will occur using the sensor data and a Hankel Alternative View of Koopman (HAVOK) model, and commanding the vehicle to take a corrective action before the SPI event occurs to prevent the SPI event from happening in response to determining that the SPI event will occur.

Early warning system for stochastic preignition

A rotor for an electric machine includes a heat pipe cooling system. A rotor core has a number of cavities internal to the rotor core. The cavities are surrounded by a wall defined by the rotor core. A magnetic element disposed in the at least one cavity leaving a void in the at least one cavity between the magnetic element and the wall. A heat pipe evaporator is disposed in the void and conforms to the available space, contacting the magnetic element and the wall to remove heat from the rotor core.

Electric motor rotor with conformal heat pipes

An electronic solid-state switch assembly includes a base plate and a heat exchanger; an electrically insulating layer and a direct bonded substrate affixed to the base plate; a first terminal and a second terminal; a plurality of power transistors; a plurality of gate drivers; a communication interface, a current sensor, and a snubber circuit; and a controller. The plurality of gate drivers are operatively coupled to the plurality of power transistors. The plurality of power transistors are arranged in parallel on the direct bonded substrate between the first terminal and the second terminal. The plurality of power transistors are electrically connected to the first terminal and to the second terminal. The controller is in communication with the plurality of gate drivers, the current sensor, and the communication interface. The controller is configured to control, via the plurality of gate drivers, the plurality of power transistors.

Solid-state multi-switch device

An inverter assembly for a motor vehicle includes a housing with an inlet end for receiving a flow of coolant and an outlet end for discharging the flow of coolant. The assembly further includes a first plurality of power transistors conducting and switching an electrical current and generating a first amount of heat. The assembly further includes a second plurality of power transistors conducting and switching the electrical current and generating a second amount of heat that is less than the first amount of heat. A heat sink includes a plate with a first section adjacent to the first plurality of power transistors and a second section adjacent to the second plurality of power transistors. The heat sink further includes a first plurality of fins for drawing the first amount of heat from the first section and a guide vane directing the flow of coolant toward the first plurality of fins.

Heat sink for an electronic device of a motor vehicle and method of manufacturing same

An internal combustion engine includes a combustion chamber formed by cooperation of a cylinder bore formed in a cylinder block, a cylinder head and a piston. A combustion ignition device is disposed in the combustion chamber and includes a nozzle defining a pre-chamber, a barrier discharge plasma igniter, including a tip portion disposed in the pre-chamber and a plurality of apertures disposed in the nozzle. The pre-chamber is in fluidic communication with the combustion chamber via the plurality of apertures. A controller is in communication with the engine and the barrier discharge plasma igniter.

Combustion ignition device for an internal combustion engine

A bi-fuel vehicle has an Internal Combustion Engine (ICE) to provide motive power to the vehicle by combustion of a liquid fuel and gas-phase fuel. The vehicle has a dual fuel tank including a liquid fuel tank to receive liquid fuel, contain the liquid fuel, and supply the liquid fuel for combustion in the ICE. The vehicle has a pressurizable gas-phase fuel tank defined by a wall. A gas-phase fuel is permeable through the wall. The pressurizable gas-phase fuel tank is to receive the gas-phase fuel, contain the gas-phase fuel, and supply the gas-phase fuel for combustion in the ICE. A shell envelops the pressurizable gas-phase fuel tank and defines an interior space of the liquid fuel tank. The wall is in fluid communication with the interior space. The interior space is to receive the permeated gas-phase fuel.

Bi-fuel vehicle

A method for controlling a vehicle employing a powertrain system and a braking system coupled to vehicle wheels includes interrupting vehicle creep operation upon detect absence of a qualified operator in a driver's seat when the vehicle is in a propulsion state.

Method and apparatus for vehicle creep interruption

A piston for an internal combustion engine is located within a cylinder of the engine. The piston includes a dish-shaped depression in a surface of the piston exposed to a combustion chamber of the cylinder providing a recess from a nominal top of the piston. The depression includes a depression boundary located at the nominal top of the piston and proximate to an outer diameter of the piston, an apex, and inclined walls connecting the apex to the depression boundary.

Piston for robust auto-ignition

A direct injection engine includes a fuel injector receiving a flow of pressurized fuel. The fuel injector provides fuel injections directly into a combustion chamber of the engine. The fuel injector includes a first fuel injector nozzle opening directing with a first narrow injection angle a first portion of a fuel injection mass at a spark gap of a spark plug. The fuel injector further includes a second fuel injector nozzle opening dispersing with a second wider injection angle a second portion of the fuel injection mass within the combustion chamber.

Growing community of inventors

Northville, MI, United States of America

Ronald O Grover, Jr