公开(公告)号：US12221919B1

公开(公告)日：2025-02-11

申请号：US18526012

申请日：2023-12-01

Applicant: FCA US LLC

Inventor： Jeongyong Choi ,  Michael Barkey ,  William Attard ,  Filip Vucak

IPC: F02B37/18 ,  F01N3/28

Abstract: A control system for an engine comprising a turbocharger includes a cold light off catalyst (CLOC), a main catalyst, a CLOC valve, and a controller. The CLOC is positioned in a bypass passage around a turbine of the turbocharger. The main catalyst is disposed downstream of the turbine and the CLOC. The CLOC valve selectively routes exhaust flow from the engine between the turbine and the CLOC. The controller determines whether a temperature of the main catalyst is less than a threshold; commands a CLOC mode wherein the CLOC valve routes at least some exhaust to the CLOC based on the temperature being less than the threshold; determines whether a boost is requested at the engine; determines whether a full turbine input is needed to satisfy the requested boost; and disables the CLOC mode based on a determination that a full turbine input is needed.

公开(公告)号：US12044163B1

公开(公告)日：2024-07-23

申请号：US18526048

申请日：2023-12-01

Applicant: FCA US LLC

Inventor： Jeongyong Choi ,  Michael Barkey ,  William Attard ,  Filip Vucak

IPC: F02B37/18 ,  F02D41/00 ,  F02D41/04 ,  F01N3/10

CPC classification number: F02B37/183 ,  F02D41/0007 ,  F02D41/04 ,  F01N3/105 ,  F01N2430/06 ,  F02D2200/0402

Abstract: A control system for an engine comprising a turbocharger includes a throttle valve, a cold light off catalyst (CLOC), a CLOC valve, and a controller. The CLOC is positioned in a bypass passage around a turbine of the turbocharger. The CLOC valve selectively routes exhaust flow from the engine between the turbine and the CLOC. The controller is configured to command the CLOC valve to a first position whereby exhaust flow is routed to the CLOC in a CLOC mode; determine, based on operation in the CLOC mode, a pressure drop within the turbocharger; and command the actuator to move resulting in increased airflow into the engine while in the CLOC mode.

公开(公告)号：US12085012B1

公开(公告)日：2024-09-10

申请号：US18526025

申请日：2023-12-01

Applicant: FCA US LLC

Inventor： Michael Barkey ,  Filip Vucak ,  Jeongyong Choi

IPC: F02B37/18 ,  F02D41/00

CPC classification number: F02B37/183 ,  F02D41/0007 ,  F05D2220/40

Abstract: A control system for an engine comprising a turbocharger includes a cold light off catalyst (CLOC), a main catalyst, a CLOC valve, a first and second oxygen sensor, and a controller. The CLOC is positioned in a bypass passage around a turbine of the turbocharger. The CLOC valve selectively routes exhaust flow from the engine between the turbine and the CLOC. The first oxygen sensor is disposed between the CLOC valve and the CLOC. The second oxygen sensor is disposed between the CLOC and the main catalyst. A position of the CLOC valve is determined and a priority is assigned to one of the first and second signals of the oxygen sensors based on the position of the CLOC valve. An engine out lambda is determined based on the first and second signals and assigned priority. An engine parameter is commanded.

公开(公告)号：US12037936B1

公开(公告)日：2024-07-16

申请号：US18526081

申请日：2023-12-01

Applicant: FCA US LLC

Inventor： William Attard ,  Filip Vucak ,  Michael Barkey ,  Jeongyong Choi

IPC: F02B37/18 ,  F01M1/16 ,  F02B39/14 ,  F02D41/00 ,  F01N3/10

CPC classification number: F02B37/183 ,  F01M1/16 ,  F02B39/14 ,  F02D41/0007 ,  F01N3/105 ,  F01N2430/06

Abstract: A control system for an engine comprising a turbocharger includes a cold light off catalyst (CLOC), a CLOC valve, an oil control valve and a controller. The CLOC is positioned in a bypass passage around a turbine of the turbocharger. The CLOC valve selectively routes exhaust flow from the engine between the turbine and the CLOC. The oil control valve regulates lubrication oil from the engine to the turbocharger. The controller is configured to command the CLOC valve to a first position whereby exhaust flow is routed to the CLOC in a CLOC mode; determine, based on operation in the CLOC mode, a pressure of the turbine of the turbocharger; compare the determined pressure to a pressure threshold; determine a target position of the oil control valve to mitigate oil leakage from the turbocharger during CLOC operation; and command the oil control valve to the target position.