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    Fast torque response for boosted engines
    195.
    发明授权
    Fast torque response for boosted engines 有权

    公开(公告)号：US11635035B2

    公开(公告)日：2023-04-25

    申请号：US17569308

    申请日：2022-01-05

    Applicant: Tula Technology, Inc.

    Inventor： Elliott A. Ortiz-Soto ,  Shahaboddin Owlia

    IPC: F02D41/00 ,  F02B37/24 ,  F02D41/14 ,  F02D41/18

    Abstract: Engine controllers and control schemes are provided for managing engine state transitions requiring increased compressor pressure ratios in turbocharged engines. In some circumstances, turbo lag can be mitigated by initially transitioning the engine to an intermediate engine state that directly or indirectly increases airflow through the engine and turbocharger relative to what would be possible if the engine were immediately commanded to operate at the target engine state. After reaching a point where the desired torque is actually generated at the intermediate engine state, the operational settings are gradually reduced to the target effective firing density while increasing the operational compressor pressure ratio to the target compressor ratio.

    Motor torque smoothing on combustion engines by approximating a periodic waveform using sinusoids
    197.
    发明授权
    Motor torque smoothing on combustion engines by approximating a periodic waveform using sinusoids 有权

    公开(公告)号：US11421613B2

    公开(公告)日：2022-08-23

    申请号：US17466888

    申请日：2021-09-03

    Applicant: Tula Technology, Inc.

    Inventor： Louis Joseph Serrano ,  Vijay Srinivasan

    IPC: F02D41/00 ,  F02D17/02 ,  F02D41/30

    Abstract: Methods, systems, and devices for operating an internal combustion engine at a firing fraction that is less than a value of 1.0, wherein one or more cylinders of the internal combustion engine are not designated to be fired, determining a smoothing event time period where a particular one of the cylinders that have not been designated to be fired is either skipped or recharged, selecting a periodic disruptive waveform to approximate that is related to a skip or recharge event that is part of the smoothing event time period, determining a first harmonic sinusoid from a group of harmonic sinusoids that reduces the error between an approximated waveform and the disruptive waveform, determining a timeframe for utilizing the first harmonic, and actuating an additional motor to initiate a supplemental quantity of torque during the smoothing event time period based on the disruption quantity of torque.

    SYSTEMS AND METHODS FOR SELECTIVELY ACTIVATING ENGINE CYLINDERS TO MAINTAIN MINIMUM CYLINDER PRESSURE
    198.
    发明申请
    SYSTEMS AND METHODS FOR SELECTIVELY ACTIVATING ENGINE CYLINDERS TO MAINTAIN MINIMUM CYLINDER PRESSURE 有权

    公开(公告)号：US20220205401A1

    公开(公告)日：2022-06-30

    申请号：US17622349

    申请日：2020-07-02

    Applicant: CUMMINS INC. ,  TULA TECHNOLOGY, INC.

    Inventor： J. Steven Kolhouse ,  Aaron William Beinborn ,  Lyle E. Kocher

    IPC: F02D41/00 ,  F02D17/02 ,  F02D41/08

    Abstract: A system for controlling operations of an engine comprises a plurality of cylinders and a controller operatively coupled to each of the plurality of cylinders. The controller is configured to determine an operating condition of the engine, and in response to determining that the operating condition is suitable for activating less then all cylinders of the plurality of cylinders during a cycle of the engine, determine a first firing pattern, and a second firing pattern different from the first firing pattern for activating the plurality of cylinders of the engine. The controller is configured to activate a first set of cylinders of the plurality of cylinders based on the first firing pattern, and subsequent to activating the first set of cylinders, activate a second set of cylinders of the plurality of cylinders different from the first set of cylinders based on the second firing pattern.

    MOTOR TORQUE SMOOTHING FOR RECHARGING EVENTS ON COMBUSTION ENGINES
    199.
    发明申请
    MOTOR TORQUE SMOOTHING FOR RECHARGING EVENTS ON COMBUSTION ENGINES 有权

    公开(公告)号：US20220203959A1

    公开(公告)日：2022-06-30

    申请号：US17531437

    申请日：2021-11-19

    Applicant: Tula Technology, Inc.

    Inventor： Vijay Srinivasan ,  Louis Joseph Serrano

    IPC: B60W20/13 ,  F02D41/00 ,  F02D41/14 ,  F02D13/04 ,  B60W10/08 ,  F02P9/00 ,  B60W20/15 ,  B60W10/06 ,  F02D13/02

    Abstract: Methods, systems, and devices for managing motor torque smoothing for internal combustion engine cylinder recharging events are described herein. An engine controller in a vehicle for managing motor torque smoothing for internal combustion engine cylinder recharging events may be configured to operate the internal combustion engine at a firing fraction that is less than a value of 1.0, wherein one or more cylinders are not designated to be fired, determine a recharge event time period where a particular one of the cylinders that have not been designated to be fired is recharged, identify a disruption quantity of torque during the recharging event time period, and actuate an additional motor to initiate a supplemental quantity of torque during the recharge event time period based on the disruption quantity of torque.

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