公开(公告)号：US11885253B1

公开(公告)日：2024-01-30

申请号：US17987070

申请日：2022-11-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrew A. Raftopoulos ,  Pratap S. Murthy ,  Vijay A. Ramappan

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

CPC classification number: F01N9/00 ,  F01N3/2086 ,  F01N2430/00 ,  F01N2900/1626 ,  F02D41/0255 ,  F02D2200/0802

Abstract: A method of controlling light-off of a catalytic converter in an exhaust system of an internal combustion engine (ICE) includes identifying a start of the ICE requiring a light-off of the catalytic converter. The method also includes regulating an exhaust-flow control valve to increase exhaust gas backpressure in the exhaust system in response to the identified start of the ICE. The method additionally includes regulating combustion inside the ICE to increase enthalpy of the ICE. The method also includes detecting light-off of the catalytic converter. The method additionally includes regulating the exhaust-flow control valve to decrease the exhaust gas backpressure in the exhaust system in response to the catalytic converter light-off. Furthermore, the method includes regulating combustion inside the ICE to decrease ICE enthalpy in response to the catalytic converter light-off. The method may be embodied in an algorithm programmed in an electronic controller of a motor vehicle.

公开(公告)号：US20220268197A1

公开(公告)日：2022-08-25

申请号：US17184886

申请日：2021-02-25

Applicant: GM Global Technology Operations LLC

Inventor： Michael A. Smith ,  Robert Gallon ,  Andrew A. Raftopoulos ,  Eugene V. Gonze ,  Bryan K. Pryor ,  Sergio Quelhas

IPC: F01P3/06 ,  F01M11/00

Abstract: A method for thermal management of a motor vehicle engine includes one or more of the following: determining a current lube oil temperature; determining a lube oil temperature for optimal friction; turning on piston cooling jets based on the current lube oil temperature and the lube oil temperature for optimal friction; and turning off the piston cooling jets.

公开(公告)号：US11415040B1

公开(公告)日：2022-08-16

申请号：US17184886

申请日：2021-02-25

Applicant: GM Global Technology Operations LLC

Inventor： Michael A. Smith ,  Robert Gallon ,  Andrew A. Raftopoulos ,  Eugene V. Gonze ,  Bryan K. Pryor ,  Sergio Quelhas

IPC: F01P3/06 ,  F01M11/00 ,  F01P3/08 ,  F01P3/00

Abstract: A method for thermal management of a motor vehicle engine includes one or more of the following: determining a current lube oil temperature; determining a lube oil temperature for optimal friction; turning on piston cooling jets based on the current lube oil temperature and the lube oil temperature for optimal friction; and turning off the piston cooling jets.

公开(公告)号：US11313291B2

公开(公告)日：2022-04-26

申请号：US16983375

申请日：2020-08-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrew A. Raftopoulos ,  Michael A. Smith ,  Christopher E. Whitney ,  Nathan M. Picot ,  Craig E. Slepicka ,  Robert Gallon ,  Darrell W. Burleigh ,  Vijay A. Ramappan

IPC: F02D41/00 ,  F02M25/08 ,  F02D41/14 ,  F02D9/02 ,  F02D13/02 ,  F02M26/05 ,  F02D41/12 ,  F02B29/04

Abstract: An engine system includes: a first throttle valve; a turbocharger compressor disposed downstream of the first throttle valve; a charge air cooler disposed downstream of the turbocharger compressor; a second throttle valve located downstream of the turbocharger compressor; a purge inlet located downstream of the first throttle valve and configured to introduce fuel vapor from a fuel tank into intake air; and an engine control module configured to: maintain the first throttle valve in a fully open position; and selectively close the first throttle valve relative to the fully open position in response to receipt of a request to at least one of: purge fuel vapor from the fuel tank; and at least one of decrease and prevent icing of the charge air cooler.

公开(公告)号：US11156179B1

公开(公告)日：2021-10-26

申请号：US17038420

申请日：2020-09-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrew A. Raftopoulos ,  Michael A. Smith ,  Robert Gallon ,  Pratap S. Murthy ,  Scott T. Feldmann

IPC: F02D41/12 ,  F01L1/04 ,  F02D41/38 ,  F02D13/02 ,  F02D41/14 ,  F01L5/00 ,  F01L1/047

Abstract: A system includes a fuel control module and a valve control module. The fuel control module controls a fuel injector to stop fuel delivery to each cylinder of an engine in a vehicle when the vehicle is decelerating. The valve control module controls a valve actuator to actuate intake and exhaust valves of each cylinder of the engine between open and closed positions when fuel delivery to each cylinder of the engine is stopped. The valve control module controls the valve actuator to adjust an amount of airflow through each cylinder of the engine to a minimum amount when fuel delivery to each cylinder of the engine is initially stopped. The valve control module controls the valve actuator to adjust the amount of airflow through each cylinder of the engine to an amount greater than the minimum amount before fuel delivery to each cylinder of the engine is restarted.