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    Passive nitric oxide storage catalyst management
    41.
    发明授权
    Passive nitric oxide storage catalyst management 有权

    公开(公告)号：US10947885B2

    公开(公告)日：2021-03-16

    申请号：US16017141

    申请日：2018-06-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

    IPC: F01N9/00 ,  F01N3/08 ,  F02D41/02 ,  F01N3/20

    Abstract: According to one or more embodiments described herein, an exhaust system for treating exhaust gas from an internal combustion engine in a motor vehicle includes a passive NOx absorber (PNA) device, and a model-based controller that controls an amount of NOx stored by the PNA device. Controlling of the amount of NOx stored includes computing a predicted NOx storage level of the PNA device using a prediction model of the PNA device, and in response to the predicted NOx storage level of the PNA device being greater than a predetermined cold-start threshold, raising a temperature of the exhaust gas by changing an operation of the internal combustion engine.

    Deceleration cylinder cut-off (DCCO) methodology with enhanced EGR
    42.
    发明授权
    Deceleration cylinder cut-off (DCCO) methodology with enhanced EGR 有权

    公开(公告)号：US10704504B1

    公开(公告)日：2020-07-07

    申请号：US16385564

    申请日：2019-04-16

    Applicant: GM Global Technology Operations LLC

    Inventor： Michael A. Smith ,  Michael Kaczmar ,  Robert Gallon

    IPC: F02M26/01 ,  F02M26/46 ,  F02D41/12 ,  F02D41/00

    Abstract: A method of operating an engine having an intake manifold, an exhaust manifold, a crankshaft, a plurality of working cylinders each having at least one intake valve and at least one exhaust valve, and an exhaust gas recirculation conduit providing fluid communication between the intake manifold and the exhaust manifold. The method includes: while the engine is operating, in response to a no engine torque request, deactivating a number of the working cylinders such that none of the deactivated working cylinders are fired and no air is pumped through the deactivated working cylinders as the crankshaft rotates, operating at least one of the plurality of working cylinders that is not deactivated to pump air through the non-deactivated working cylinder, and controlling gas flow through the exhaust gas recirculation conduit to circulate air pumped through the non-deactivated working cylinder to the intake manifold.

    Method for controlling an exhaust gas treatment system
    43.
    发明授权
    Method for controlling an exhaust gas treatment system 有权

    公开(公告)号：US10400648B2

    公开(公告)日：2019-09-03

    申请号：US15713999

    申请日：2017-09-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Bryan D. Axe ,  Michael A. Smith

    IPC: F01N3/20

    Abstract: Provided is a method for controlling a vehicle exhaust gas treatment system, wherein the system includes an engine and a selective catalytic reduction device configured to receive exhaust gas from the engine and reductant from an injector. The method comprises determining a need for a reductant injection, determining a need for reductant injector noise abatement, and subsequently conducting one or more reductant injection events during one or more engine combustion events. A vehicle combustion event comprises combustion of fuel within a cylinder of the ICE. Determining a need for reductant injector noise abatement comprises determining if an engine speed is below a threshold, if a speed of the vehicle is below a threshold, if a decibel level of a vehicle audio system is below a threshold, or if a hands-free telephone system is being utilized by a passenger of the vehicle. The engine can be a diesel engine.

    Shutter system for a motor vehicle
    48.
    发明授权
    Shutter system for a motor vehicle 有权

    公开(公告)号：US11208945B1

    公开(公告)日：2021-12-28

    申请号：US17007291

    申请日：2020-08-31

    Applicant: GM Global Technology Operations LLC

    Inventor： Michael A. Smith ,  Richard J. Lopez ,  Rolf B. Karlsson

    IPC: F02M35/10 ,  F01P7/10 ,  F02D41/10 ,  B60K11/04 ,  B60K11/08 ,  F02B29/04 ,  F01P5/06 ,  F01P3/18

    Abstract: A shutter system is provided for a vehicle having an internal combustion engine that receives forced intake air and is cooled by an engine coolant. The vehicle includes a charge air cooler system having an intercooler for cooling the intake air and an engine cooling system. The shutter system includes a shutter positioned downstream of the intercooler and an actuator for moving the shutter between first and second positions. The shutter system further includes a sensor for generating a signal associated with a temperature of the intake air and a processor for comparing the temperature to a threshold. The actuator moves the shutter to the first position in response to receiving the first signal when the temperature is below the threshold. The actuator moves the shutter to the second position in response to receiving the second signal when the temperature is above the threshold.

    SYSTEM AND METHOD FOR CONTROLLING FLUID TEMPERATURE IN A THERMAL SYSTEM
    49.
    发明申请
    SYSTEM AND METHOD FOR CONTROLLING FLUID TEMPERATURE IN A THERMAL SYSTEM 有权

    公开(公告)号：US20210245576A1

    公开(公告)日：2021-08-12

    申请号：US16784799

    申请日：2020-02-07

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Michael A. Smith ,  Eugene V. Gonze ,  Richard J. Lopez

    IPC: B60H1/00

    Abstract: A system for controlling fluid temperature in a thermal system includes a heat source, a heat sink coupled to the heat source, a first heat exchanger and a second heat exchanger, a first expansion valve configured to regulate the flow of coolant between the heat source and the first heat exchanger, a second expansion valve configured to regulate the flow of coolant between the heat source and the second heat exchanger, and a controller. The controller is configured to determine an operating condition of the thermal system and generate a first control signal to control the first and second expansion valves to direct the flow of coolant to the first and second heat exchangers. The first and second expansion valves are arranged in parallel to recover heat rejected from the coolant and distribute the recovered heat to the first and second heat exchangers.

    System and method for a motor vehicle with reduced fuel enrichment after a fuel cutoff event
    50.
    发明授权
    System and method for a motor vehicle with reduced fuel enrichment after a fuel cutoff event 有权

    公开(公告)号：US11085390B2

    公开(公告)日：2021-08-10

    申请号：US16696134

    申请日：2019-11-26

    Applicant: GM Global Technology Operations LLC

    Inventor： Robert Gallon ,  Michael A. Smith ,  Matt Pedigo

    IPC: F02D41/12 ,  F02D41/14 ,  F02D13/02 ,  F02D9/02

    Abstract: A control system for a fuel cutoff system of a motor vehicle includes a fuel cutoff module that generates a fuel cutoff signal for disabling a supply of fuel to an engine, in response to the fuel cutoff module detecting a deceleration fuel cutoff (DFCO) event. The control system further includes an oxygen storage module determining an amount of oxygen accumulated in a catalyst and comparing this amount to an oxygen storage capacity (OSC) of the catalyst, in response to the fuel cutoff module determining the DFCO event. The control system further includes an intake valve timing module generating a phasing signal to actuate a plurality of cam phasers to reduce a flow rate of oxygen to the catalyst, in response to the fuel cutoff module determining the DFCO event and the oxygen storage module determining that the amount of oxygen stored in the catalyst is less than the OSC.

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