公开(公告)号：US10995688B2

公开(公告)日：2021-05-04

申请号：US16431199

申请日：2019-06-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jun Chen ,  David E. Edwards ,  Yiran Hu ,  Min Sun ,  Adam J. Heinzen ,  Michael A. Smith

IPC: F02D41/14 ,  G01K13/02 ,  G01F7/00 ,  F02D43/04 ,  F01P7/16

Abstract: Systems and methods are provided for determining a temperature of a thermal system that includes fluid conduits. A sensor monitors a current state of the temperature. A controller receives a signal from the sensor that is representative of the current state; determines a flow in the fluid conduits; determines a noise covariance of the thermal system; processes a thermal model of the thermal system; predicts a next-step state of the parameter at a time after the current state; and corrects the next-step state based, at least in-part, on the noise covariance resulting in a corrected next-step state.

公开(公告)号：US20210040877A1

公开(公告)日：2021-02-11

申请号：US16531754

申请日：2019-08-05

Applicant: GM Global Technology Operations LLC

Inventor： Michael A. Smith ,  Scott K. Wilson ,  Eugene V. Gonze ,  James B. Hicks ,  Sergio Quelhas ,  Anthony J. Corsetti

IPC: F01P5/12 ,  F04D15/00 ,  F01P7/16

Abstract: The present disclosure provides an engine cooling system for controlling the temperature of an engine of a motor vehicle. The system includes an engine cooling circuit for circulating a coolant to transfer heat from the engine to an airflow. An electric water pump is configured to circulate the coolant through the circuit at a maximum electric pump flow rate, and a mechanical water pump is configured to circulate the coolant through the circuit at a maximum mechanical pump flow rate that is higher than the maximum electric pump flow rate. The circuit further includes a selector valve configured to fluidly connect one of the electric water pump and the mechanical water pump to the engine. An engine control module generates a valve signal for actuating the selector valve to fluidly connect one of the electric water pump and the mechanical water pump to the engine.

公开(公告)号：US10914273B2

公开(公告)日：2021-02-09

申请号：US16354690

申请日：2019-03-15

Applicant: GM Global Technology Operations LLC

Inventor： Michael A. Smith ,  Robert J. Gallon ,  Michael P. Kaczmar ,  Martino A. Casetti ,  Eric M. Hall

IPC: F02M26/43 ,  F02D41/00 ,  F02B37/16 ,  F02D41/14 ,  F02M26/05 ,  F02M26/47 ,  F02B37/24

Abstract: An engine includes an air intake system, an exhaust system, a single-cylinder-sourced EGR system, an exhaust sensor that is disposed to monitor exhaust gas from the single one of the cylinders, and a diverter valve. A controller includes an instruction set that executable to determine operation of the engine in a fuel cut-off mode, discontinue fuel flow to the single one of the cylinders, divert exhaust gas from the single one of the cylinders to the air intake system, determine an airflow, temperature, and an equivalence ratio of the diverted exhaust gas from the single one of the cylinders, determine a mass flowrate of oxygen in the diverted exhaust gas, integrate the mass flowrate of oxygen in the diverted exhaust gas, and discontinue the diverting of the exhaust gas from the single one of the cylinders when the integrated mass flowrate of oxygen is greater than a threshold value.

公开(公告)号：US10895192B1

公开(公告)日：2021-01-19

申请号：US16531754

申请日：2019-08-05

Applicant: GM Global Technology Operations LLC

Inventor： Michael A. Smith ,  Scott K. Wilson ,  Eugene V. Gonze ,  James B. Hicks ,  Sergio Quelhas ,  Anthony J. Corsetti

IPC: F02P5/12 ,  F01P5/12 ,  F04D15/00 ,  F01P7/16 ,  F01P7/14 ,  F01P3/02

Abstract: The present disclosure provides an engine cooling system for controlling the temperature of an engine of a motor vehicle. The system includes an engine cooling circuit for circulating a coolant to transfer heat from the engine to an airflow. An electric water pump is configured to circulate the coolant through the circuit at a maximum electric pump flow rate, and a mechanical water pump is configured to circulate the coolant through the circuit at a maximum mechanical pump flow rate that is higher than the maximum electric pump flow rate. The circuit further includes a selector valve configured to fluidly connect one of the electric water pump and the mechanical water pump to the engine. An engine control module generates a valve signal for actuating the selector valve to fluidly connect one of the electric water pump and the mechanical water pump to the engine.

公开(公告)号：US10859045B1

公开(公告)日：2020-12-08

申请号：US16672673

申请日：2019-11-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michael A. Smith ,  Robert Gallon ,  Richard J. Lopez ,  Daniel R. Tylutki

IPC: F02M31/04 ,  F02M35/16 ,  F02M26/35 ,  F01P5/10 ,  F01P3/18 ,  F02M31/10

Abstract: Systems and methods are provided for avoiding intake air condensation. A thermal management system includes a propulsion system with an internal combustion engine and an electric machine. A power electronics system delivers power to the electric machine. A fluid circuit is configured to cool the power electronics system. Intake air of the internal combustion engine is circulated through an intake air heat exchanger. A controller operates the fluid circuit to collect heat from the power electronics system and to selectively deliver the heat to the intake air heat exchanger.

公开(公告)号：US10365258B2

公开(公告)日：2019-07-30

申请号：US15675019

申请日：2017-08-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michael A. Smith ,  Christopher L. Whitt ,  Yong Miao

IPC: G01N33/00 ,  F01N11/00 ,  F01N3/10

Abstract: A method for determining the hydrocarbon (HC) oxidation performance of an oxidation catalyst device (OC) includes communicating gas to the OC inlet over a time frame, measuring the NOx content of the OC outlet gas using a NOx sensor over the time frame, wherein the temperature of the OC increases over the time frame, and correlating an increased NOx measurement over the time frame to an increased OC HC oxidation performance. The NOx sensor can be operated in a low temperature mode during the time frame. The method can further include determining the temperature of the OC over the time frame and correlating the HC oxidation performance to the OC temperature, and/or correlating a maximum NOx concentration measured during the time frame to the OC temperature measured at the same time. HC slip through the OC can be identified when the measured NOx content of the OC outlet gas decreases.

公开(公告)号：US20190211740A1

公开(公告)日：2019-07-11

申请号：US15868298

申请日：2018-01-11

Applicant: GM Global Technology Operations LLC

Inventor： Thomas LAROSE, JR. ,  Nicholas Girardi ,  Douglas C. Sarsen ,  Michael A. Smith

IPC: F01P7/16 ,  F01P3/20 ,  F01P5/12 ,  F01P7/04 ,  F01N5/02

Abstract: A coolant control system of a vehicle includes a coolant pump that pumps coolant to a heat exchanger. A diesel exhaust fluid (DEF) injector injects a DEF into an exhaust system and receives coolant output from the heat exchanger. A fuel heat exchanger transfers heat between coolant and fuel flowing through the fuel heat exchanger. An engine control module is configured to determine a first requested speed for DEF injector cooling, determine a second requested speed for fuel cooling, and based on at least one of the first and second requested speeds, selectively increase at least one of: opening of a valve that controls a flow rate of fuel flowing from the fuel rail to the fuel tank, a flow rate of fuel from fuel injectors of an engine to the fuel tank, and a target speed of the coolant pump.

公开(公告)号：US20190085747A1

公开(公告)日：2019-03-21

申请号：US15711304

申请日：2017-09-21

Applicant: GM Global Technology Operations LLC

Inventor： Michael A. Smith ,  Christopher L. Whitt ,  Sarah Funk ,  Shouxian Ren

IPC: F01N3/22 ,  F01N3/08

CPC classification number: F01N3/22 ,  F01N3/08 ,  F01N3/0864 ,  F01N9/00 ,  F01N2370/04 ,  F01N2430/00 ,  F01N2430/06 ,  F01N2570/16 ,  F01N2900/1624 ,  F02D11/105 ,  F02D41/0295 ,  F02D2041/1412 ,  F02D2200/0814 ,  F02D2250/18

Abstract: Technical solutions are described for limiting exposure of components of an emissions control system to rich exhaust conditions. An example an emissions control system includes an oxygen storage component; and a controller that limits exposure of the oxygen storage component to rich exhaust conditions. The limiting includes determining an air-to-fuel equivalence ratio in exhaust gas in response to an engine receiving a request to generate torque, the request including a displacement of a pedal; determining an amount of oxygen in the exhaust gas based on the air-to-fuel equivalence ratio; determining an oxygen level stored by the oxygen storage component; and if the oxygen level is above a predetermined threshold, lowering a torque generation rate of the engine, which specifies amount of torque generated per unit displacement of the pedal.

公开(公告)号：US20180320617A1

公开(公告)日：2018-11-08

申请号：US15585589

申请日：2017-05-03

Applicant: GM Global Technology Operations LLC

Inventor： Sami Ahmed ,  Michael A. Smith ,  Michelangelo Ardanese ,  Daniel J. Shepard

IPC: F02D41/02 ,  F01P3/02 ,  F01N3/20 ,  F01N3/035 ,  F01N11/00

CPC classification number: F02D41/0245 ,  F01N3/035 ,  F01N3/2066 ,  F01N11/002 ,  F01P3/02 ,  F01P2003/021 ,  F01P2037/00

Abstract: An automotive vehicle includes an internal combustion engine that outputs exhaust gas from a cylinder, and an active thermal management system. The active thermal management system flows coolant around the cylinder thereby varying an exhaust temperature of the exhaust gas. An electronic engine controller controls the internal combustion engine and the active thermal management system. The engine controller generates a control signal to selectively operate the active thermal management system in a normal mode, a thermal increase mode, and a thermal decrease mode. The normal mode flows the coolant at a first coolant temperature. The thermal increase mode flows the coolant at a second coolant temperature greater than the first coolant temperature thereby increasing the exhaust temperature of the exhaust gas. The thermal decrease mode flows the coolant at a third coolant temperature less than the first coolant temperature thereby decreasing the exhaust temperature of the exhaust gas.