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    ENGINE AND COOLANT SYSTEM CONTROL SYSTEMS AND METHODS
    2.
    发明申请
    ENGINE AND COOLANT SYSTEM CONTROL SYSTEMS AND METHODS 审中-公开

    公开(公告)号：US20190383187A1

    公开(公告)日：2019-12-19

    申请号：US16009355

    申请日：2018-06-15

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Douglas C. Sarsen ,  Thomas LaRose, JR. ,  Nicholas Girardi

    IPC: F01N3/20 ,  F02M31/16 ,  F02M31/20 ,  F02M37/00

    Abstract: A coolant control system of a vehicle includes a coolant pump that pumps coolant to a second radiator that is different than a first radiator that receives coolant from an engine of the vehicle. A diesel exhaust fluid (DEF) injector injects a DEF into an exhaust system and receives coolant output from the second radiator. A fuel heat exchanger transfers heat between coolant and fuel flowing therethrough. An engine control module is configured to determine a temperature of the DEF injector, control a duty cycle of the coolant pump, determine a vaporized condition of the coolant based on a DEF injector temperature, optionally further, in response to determining a vaporized condition of the coolant, implement a vapor purge by oscillating the duty cycle of the coolant pump, and optionally further identify a low-coolant condition of the coolant control system based on the vapor purges implemented during a time period.

    Engine and coolant system control systems and methods
    4.
    发明授权
    Engine and coolant system control systems and methods 有权

    公开(公告)号：US10794253B2

    公开(公告)日：2020-10-06

    申请号：US16009355

    申请日：2018-06-15

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Douglas C. Sarsen ,  Thomas LaRose, Jr. ,  Nicholas Girardi

    IPC: F01N3/20 ,  F02M31/16 ,  F02M31/20 ,  F02M37/00

    Abstract: A coolant control system of a vehicle includes a coolant pump that pumps coolant to a second radiator that is different than a first radiator that receives coolant from an engine of the vehicle. A diesel exhaust fluid (DEF) injector injects a DEF into an exhaust system and receives coolant output from the second radiator. A fuel heat exchanger transfers heat between coolant and fuel flowing therethrough. An engine control module is configured to determine a temperature of the DEF injector, control a duty cycle of the coolant pump, determine a vaporized condition of the coolant based on a DEF injector temperature, optionally further, in response to determining a vaporized condition of the coolant, implement a vapor purge by oscillating the duty cycle of the coolant pump, and optionally further identify a low-coolant condition of the coolant control system based on the vapor purges implemented during a time period.

    Closed loop temperature control system for turbocharger compressor outlet temperature
    5.
    发明授权
    Closed loop temperature control system for turbocharger compressor outlet temperature 有权

    公开(公告)号：US11060525B2

    公开(公告)日：2021-07-13

    申请号：US16684781

    申请日：2019-11-15

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： John Maley ,  Douglas C. Sarsen ,  Casey S. Anderson ,  Joshua D. Cowgill

    IPC: F04D27/00 ,  F02D23/00 ,  F02D41/00 ,  F02D41/22 ,  F02D41/14

    Abstract: A control system for a turbocharger of a vehicle includes an enable module, an error module, a reduction module, and a boost module. The enable module is configured to: enable reduction in a boost pressure setpoint of a compressor of the turbocharger based on whether a fault exists, load on an engine, and a compressor outlet temperature; and generate an enable signal indicating whether reduction in the boost pressure setpoint is enabled. The error module configured to determine a difference between the compressor outlet temperature and a predetermined limit. The reduction control module is configured to, in response to the enable signal indicating reduction in the boost pressure setpoint is enabled, reduce the boost pressure setpoint based on the difference. The boost module is configured to adjust boost pressure output of the compressor based on the boost pressure setpoint.

    ENGINE AND COOLANT SYSTEM CONTROL SYSTEMS AND METHODS
    6.
    发明申请
    ENGINE AND COOLANT SYSTEM CONTROL SYSTEMS AND METHODS 审中-公开

    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.

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