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    DYNAMIC CHARGE COMPRESSION IGNITION ENGINE WITH MULTIPLE AFTERTREATMENT SYSTEMS
    31.
    发明申请
    DYNAMIC CHARGE COMPRESSION IGNITION ENGINE WITH MULTIPLE AFTERTREATMENT SYSTEMS 审中-公开

    公开(公告)号：US20190003443A1

    公开(公告)日：2019-01-03

    申请号：US16022017

    申请日：2018-06-28

    Applicant: Tula Technology, Inc.

    Inventor： Elliot A. ORTIZ-SOTO ,  Matthew A. YOUNKINS

    IPC: F02P5/04 ,  F02P5/15 ,  F02D41/00 ,  F02D13/02

    Abstract: Methods, devices, controllers, and algorithms are described for operating an internal combustion engine wherein at least some firing opportunities utilize low temperature gasoline combustion (LTGC). Other firing opportunities may be skipped or utilize some other type of combustion, such as spark ignition. The nature of any particular firing opportunity is dynamically determined during engine operation, often on a firing opportunity by firing opportunity basis. Firings that utilize LTGC produce little, if any, nitrous oxides in the exhaust stream and thus, in some implementations, may require no aftertreatment system to remove them from the exhaust stream.

    SYSTEM FOR MANAGING CATALYTIC CONVERTER TEMPERATURE
    36.
    发明申请
    SYSTEM FOR MANAGING CATALYTIC CONVERTER TEMPERATURE 有权
    管理催化转换温度的系统

    公开(公告)号：US20150136082A1

    公开(公告)日：2015-05-21

    申请号：US14548138

    申请日：2014-11-19

    Applicant: Tula Technology Inc.

    Inventor： Matthew A. YOUNKINS ,  Ram SUBRAMANIAN ,  Leo BRETON

    IPC: F02D41/14 ,  F02D41/02 ,  F02D37/02 ,  F02P5/15 ,  F02D41/26

    CPC classification number: F02D41/0087 ,  F02D41/025 ,  F02D41/0255 ,  F02D41/06 ,  F02D41/1446 ,  F02D41/1454 ,  F02D41/263 ,  F02D2041/0265 ,  F02D2200/0802 ,  F02D2200/0804 ,  Y02T10/26

    Abstract: Various methods and arrangements for controlling catalytic converter temperature are described. In one aspect, an engine controller includes a catalytic monitor and a firing timing determination unit. The catalytic monitor obtains data relating to a temperature of a catalytic converter. Based at least partly on this data, the firing timing determination unit generates a firing sequence for operating the engine in a skip fire manner. Another aspect of the invention relates to an engine exhaust system that can help expedite the heating of a catalytic converter.

    Abstract translation: 描述用于控制催化转化器温度的各种方法和装置。 一方面，发动机控制器包括催化监视器和点火定时确定单元。 催化监测器获得与催化转化器的温度有关的数据。 至少部分地基于该数据，发射定时确定单元以跳火方式产生用于操作发动机的点火顺序。 本发明的另一方面涉及一种能有助于加速催化转化器的发动机排气系统。

    MISFIRE DETECTION SYSTEM
    37.
    发明申请
    MISFIRE DETECTION SYSTEM 有权
    MISFIRE检测系统

    公开(公告)号：US20140261317A1

    公开(公告)日：2014-09-18

    申请号：US14207109

    申请日：2014-03-12

    Applicant: Tula Technology Inc.

    Inventor： Charles H. LOUCKS ,  Joel D. VAN ESS ,  Siamak HASHEMI ,  Louis J. SERRANO ,  Mohammad R. PIRJABERI ,  Shikui Kevin CHEN ,  Matthew A. YOUNKINS ,  Mark A. SHOST ,  Mark A. WILCUTTS

    IPC: F02D35/02

    CPC classification number: F02D41/0087 ,  F02D19/0623 ,  F02D41/22 ,  F02D41/3058 ,  F02D2200/025 ,  F02D2200/1004 ,  F02D2200/101 ,  F02D2200/1012 ,  F02D2200/1015 ,  F02D2250/14 ,  G01M15/11

    Abstract: A variety of methods and arrangements for detecting misfire in a skip fire engine control system are described. In one aspect, a window is assigned to a target firing opportunity for a target working chamber. A change in an engine parameter is measured during the window. A determination is made as to whether a firing opportunity before the target firing opportunity is a skip or a fire and/or whether a firing opportunity after the target firing opportunity is a skip or a fire. Based at least in part on this skip/fire determination, a determination is made as to whether the target working chamber has misfired. In various embodiments, if the target working chamber is identified as persistently misfiring, the firing sequence is modified so that the target working chamber is deactivated and excluded from the firing sequence. In still other embodiments, a torque model is used to detect engine-related problems.

    Abstract translation: 描述了用于检测跳火消防车控制系统中的失火的各种方法和装置。 在一个方面，将窗口分配给目标工作室的目标发射机会。 在窗口期间测量发动机参数的变化。 确定目标射击机会之前的射击机会是否是跳跃或火灾，和/或目标射击机会之后的射击机会是否是跳跃或火灾。 至少部分地基于该跳过/确定，确定目标工作室是否失火。 在各种实施例中，如果目标工作室被识别为持续地失火，则对燃烧序列进行修改，使得目标工作室被停用并从烧制序列中排除。 在其他实施例中，使用扭矩模型来检测发动机相关问题。

    MULTI-LEVEL FIRING ENGINE CONTROL
    39.
    发明申请
    MULTI-LEVEL FIRING ENGINE CONTROL 审中-公开

    公开(公告)号：US20200232404A1

    公开(公告)日：2020-07-23

    申请号：US16783495

    申请日：2020-02-06

    Applicant: Tula Technology, Inc.

    Inventor： Matthew A. YOUNKINS ,  Louis J. SERRANO

    IPC: F02D41/00 ,  F02D41/04 ,  F02D13/06 ,  F02D13/02 ,  F02D17/02 ,  F02D41/10 ,  F02D41/12 ,  F02P5/145 ,  F01L1/047 ,  F02D41/26 ,  F02P5/15 ,  F02D11/02

    Abstract: In various aspects, internal combustion engines, engine controllers and methods of controlling engines are described. The engine includes a camshaft and a two cylinder sets. Cylinders in the first are deactivatable and cylinders in the second set may be fired at high or low output levels. The air charge for each fired working cycle is set based on whether a high or low torque output is selected. In some implementations, the camshaft is axially shiftable between first and second positions. First cam lobes are configured to cause their associated cylinders to intake a large air charge during intake strokes that occur when the camshaft is in the first position. Second cam lobes for cylinders in the second set cause their associated cylinders to intake a smaller air charge when the camshaft is in the second position. Second cam lobes for cylinders in the first set deactivate their associated cylinders.

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