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    Hybrid vehicle with cylinder deactivation
    41.
    发明授权
    Hybrid vehicle with cylinder deactivation 有权
    混合动力汽车停用汽缸

    公开(公告)号：US08892330B2

    公开(公告)日：2014-11-18

    申请号：US13654217

    申请日：2012-10-17

    Applicant: Tula Technology, Inc.

    Inventor： Ronald D. Yuille ,  Mark A. Shost ,  Louis J. Serrano ,  John W. Parsels ,  Matthew A. Younkins

    IPC: G06F17/00 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  B60K6/485

    CPC classification number: B60W20/50 ,  B60K6/485 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  B60W20/16 ,  B60W2510/244 ,  B60W2710/0666 ,  B60W2710/083 ,  Y02T10/6226 ,  Y02T10/6286 ,  Y02T10/92

    Abstract: A variety of methods and arrangements for operating an internal combustion engine and one or more motor/generators in a hybrid vehicle are described. Generally, the engine is operated in a variable displacement or skip fire mode. Depending on the state of charge of an energy storage device and/or other factors, the engine is operated to generate more or less than a desired level of torque. The one or more motor/generators are used to add or subtract torque so that the motor/generator(s) and the engine collectively deliver the desired level of torque. In some embodiments, the engine may be run with a substantially open throttle to reduce pumping losses and improve fuel efficiency.

    Abstract translation: 描述了用于操作混合动力车辆中的内燃机和一个或多个电动机/发电机的各种方法和装置。 通常，发动机以可变排量或跳火模式操作。 根据能量存储装置的充电状态和/或其他因素，发动机被操作以产生大于或小于期望的扭矩水平。 一个或多个电动机/发电机用于增加或减少转矩，使得电动机/发电机和发动机共同提供所需的扭矩水平。 在一些实施例中，发动机可以以基本上打开的节气门运行，以减少泵送损失并提高燃料效率。

    Skip fire engine control
    42.
    发明授权
    Skip fire engine control 有权
    跳过消防车控制

    公开(公告)号：US08651091B2

    公开(公告)日：2014-02-18

    申请号：US13945289

    申请日：2013-07-18

    Applicant: Tula Technology, Inc.

    Inventor： Adya S. Tripathi ,  Christopher W. Chandler ,  Christopher C. Hand ,  Joshua P. Switkes ,  Mark A. Wilcutts ,  Matthew A. Younkins

    IPC: F02D17/02 ,  F02D41/00

    CPC classification number: F02D17/02 ,  F02D41/0087 ,  F02D41/047

    Abstract: A variety of methods and arrangements for controlling the operation of an internal combustion engine in a skip fire variable displacement mode are described. Generally, an engine is controlled to operate in a skip fire variable displacement mode. In one aspect, the spark timing associated with each fired working cycle is based at least in part on the firing history of the fired working chamber.

    Abstract translation: 描述了用于在跳火可变位移模式中控制内燃机的操作的各种方法和装置。 通常，发动机被控制为以跳火可变排量模式操作。 在一个方面，与每个燃烧的工作循环相关联的火花正时至少部分地基于燃烧的工作室的击发历史。

    INTERNAL COMBUSTION ENGINE CONTROL FOR IMPROVED FUEL EFFICIENCY
    45.
    发明申请
    INTERNAL COMBUSTION ENGINE CONTROL FOR IMPROVED FUEL EFFICIENCY 有权

    公开(公告)号：US20100037857A1

    公开(公告)日：2010-02-18

    申请号：US12615232

    申请日：2009-11-09

    Applicant: Adya S. TRIPATHI ,  Chester J. SILVESTRI

    Inventor： Adya S. TRIPATHI ,  Chester J. SILVESTRI

    IPC: F02P5/04 ,  F02D43/00

    CPC classification number: F02D41/0087 ,  F02D37/02 ,  F02D41/1401 ,  F02D41/266 ,  F02D2200/602 ,  F02D2250/18 ,  F02D2400/02 ,  F02P5/1512 ,  Y02T10/46

    Abstract: A variety of methods and arrangements for improving the fuel efficiency of internal combustion engines are described. Generally, an engine is controlled to operate in a skip fire variable displacement mode. Feedback control is used to dynamically determine the working cycles to be skipped to provide a desired engine output. In some embodiments a substantially optimized amount of air and fuel is delivered to the working chambers during active working cycles so that the fired working chambers can operate at efficiencies close to their optimal efficiency. In some embodiments, the appropriate firing pattern is determined at least in part using predictive adaptive control. By way of example, sigma delta controllers work well for this purpose. In some implementations, the feedback includes feedback indicative of at least one of actual and requested working cycle firings. In some embodiments, the appropriate firings are determined on a firing opportunity by firing opportunity basis. Additionally, in some embodiments, an indicia of the current rotational speed of the engine is used as a clock input for a controller used to selectively cause the skipped working cycles to be skipped.

    Systems and methods for aftertreatment system thermal mangement using cylinder deactivation and/or intake-air throttling
    46.
    发明授权
    Systems and methods for aftertreatment system thermal mangement using cylinder deactivation and/or intake-air throttling 有权

    公开(公告)号：US12196144B2

    公开(公告)日：2025-01-14

    申请号：US18497688

    申请日：2023-10-30

    Applicant: Cummins Inc. ,  Tula Technology, Inc.

    Inventor： Kunpeng Wang ,  Ke Wang ,  Yuan Zoe ,  Zhou Cao

    IPC: F02D41/02 ,  F01N3/20 ,  F02D41/00 ,  F02D41/18 ,  F02D41/14

    Abstract: Systems and methods for aftertreatment system thermal management using cylinder deactivation and/or intake-air throttling are disclosed. Systems and methods for thermal management of an aftertreatment system are provided herein. A controller coupled to an engine and an exhaust aftertreatment system is configured to: receive a first temperature value associated with the exhaust aftertreatment system and a second temperature value associated with the engine; determine, based on comparing the first temperature value to a first threshold, a thermal management mode including a first thermal management mode or a second thermal management mode; determine, responsive to determining the thermal management mode and based on comparing the second temperature value to a second threshold, an operating mode for the thermal management mode including at least one of a first operating mode or a second operating mode; and initiate the at least one of the first or the second operating mode.

    Exhaust valve failure diagnostics and management
    48.
    发明授权
    Exhaust valve failure diagnostics and management 有权

    公开(公告)号：US11959432B2

    公开(公告)日：2024-04-16

    申请号：US18180362

    申请日：2023-03-08

    Applicant: Tula Technology, Inc.

    Inventor： Robert C. Wang ,  Louis J. Serrano ,  Shikui Kevin Chen

    IPC: F02D41/22 ,  F02D13/02 ,  F02D13/06 ,  F02D41/00

    CPC classification number: F02D41/221 ,  F02D13/0242 ,  F02D13/06 ,  F02D41/0087 ,  F02D41/009 ,  F02D2200/0406

    Abstract: A method of operating an engine is provided. An exhaust valve actuation fault is detected for a first exhaust valve associated with a first cylinder during a first working cycle. In response to the detection of the exhaust valve actuation fault, fueling to at least the first cylinder is cut off. Actuation of the first exhaust valve is attempted in second working cycles that follow the first working cycle, wherein the second working cycles are not fueled. Whether or not the first exhaust valve actuated properly during the second working cycles is determined. Operation of the first cylinder is resumed when it is determined that the first exhaust valve actuated properly. Operation of the first cylinder is not resumed when it is determined that the first exhaust valve did not actuate properly.

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