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    Exhaust manifold pressure based misfire detection for internal combustion engines
    12.
    发明授权
    Exhaust manifold pressure based misfire detection for internal combustion engines 有权
    用于内燃机的排气歧管压力失火检测

    公开(公告)号：US09316565B2

    公开(公告)日：2016-04-19

    申请号：US13741112

    申请日：2013-01-14

    Applicant: Cummins Inc.

    Inventor： Karthik Kappaganthu ,  David Stroh

    IPC: G01M15/11 ,  G06F17/10

    CPC classification number: G01M15/11 ,  G06F17/10

    Abstract: An engine cylinder misfire detection system is provided that detects changes in exhaust manifold pressure (EMP) fluctuations, compares the EMP fluctuations with diagnostic thresholds determined with other engine characteristic information obtained from engine sensor data, and determines whether a cylinder misfire has occurred. A method of monitoring and detecting EMP fluctuations in combination with one or more sensed engine characteristics is disclosed to determine an engine cylinder misfire in a cycle of an internal combustion engine having at least one cylinder. The actuation approaches of the present invention include one or more processes for a cylinder of an engine associated with a determination of various load variables including fresh air flow, engine type, engine data inputs, and analytical determinants.

    Abstract translation: 提供了一种检测排气歧管压力（EMP）波动变化的发动机气缸失火检测系统，将EMP波动与根据从发动机传感器数据获得的其他发动机特性信息确定的诊断阈值进行比较，并确定是否发生气缸失火。 公开了一种监测和检测EMP波动的方法，结合一个或多个感测到的发动机特性来确定在具有至少一个气缸的内燃机的循环中的发动机气缸失火。 本发明的致动方法包括与确定包括新鲜空气流，发动机类型，发动机数据输入和分析决定因素在内的各种负载变量相关联的发动机气缸的一个或多个过程。

    SYSTEM AND METHOD FOR DETECTING AIR FUEL RATIO IMBALANCE
    14.
    发明申请
    SYSTEM AND METHOD FOR DETECTING AIR FUEL RATIO IMBALANCE 审中-公开
    用于检测空气燃料比率不平等的系统和方法

    公开(公告)号：US20150345416A1

    公开(公告)日：2015-12-03

    申请号：US14290052

    申请日：2014-05-29

    Applicant: Cummins Inc.

    Inventor： Karthik Kappanganthu ,  David Stroh ,  Carlos A. Lana ,  J. Stephen Wills

    IPC: F02D41/00 ,  G01M15/00 ,  F02D41/14

    CPC classification number: F02D41/0085 ,  F02D41/0087 ,  F02D41/009 ,  F02D41/1439 ,  F02D41/1454 ,  G01M15/00

    Abstract: A system and method of detecting fueling imbalance(s) in an internal combustion engine is provided. The method includes receiving data regarding an oxygen content of engine exhaust for the engine operating at a cycle rate. Frequency component analysis is performed comprising a filtering operation on the received oxygen content data. The filtering is done at the cycle rate of the engine or harmonics thereof to obtain filtered oxygen content data. Then, the method/system determines at least one of: 1) one or more angles of the engine at which the filtered oxygen content data exhibits a first amplitude value characteristic relative to amplitude values at other angles; and 2) a shape of the filtered oxygen content data obtained by sampling at pre-defined engine angles. The method/system then identifies a cylinder experiencing a fueling imbalance responsive to the determined at least one of one or more angle(s) and shape of the data.

    Abstract translation: 提供一种检测内燃机中的加油不平衡的系统和方法。 该方法包括接收关于用于以循环速率操作的发动机的发动机排气的氧含量的数据。 执行频率分量分析，其包括对接收的氧含量数据的滤波操作。 以发动机的循环速率或谐波进行过滤以获得过滤的氧含量数据。 然后，方法/系统确定以下至少一个：1）发动机的一个或多个角度，其中经过滤氧的含氧量数据相对于其他角度的振幅值呈现第一振幅值特性; 和2）通过以预定的发动机角度取样获得的经过滤氧含量数据的形状。 方法/系统然后响应于所确定的数据的一个或多个角度和形状中的至少一个来识别遇到加油不平衡的气缸。

    CONTROL SYSTEM FOR A MODEL-BASED KNOCK SUPPRESSION SYSTEM USING A MULTIPLE ACTUATION STRATEGY
    15.
    发明申请
    CONTROL SYSTEM FOR A MODEL-BASED KNOCK SUPPRESSION SYSTEM USING A MULTIPLE ACTUATION STRATEGY 有权
    一种基于模型的KNOCK抑制系统的控制系统，采用多重启动策略

    公开(公告)号：US20150176510A1

    公开(公告)日：2015-06-25

    申请号：US14638159

    申请日：2015-03-04

    Applicant: CUMMINS INC.

    Inventor： David Stroh

    IPC: F02D35/02 ,  F02P5/152

    CPC classification number: F02D35/025 ,  F02D35/02 ,  F02D35/026 ,  F02D35/027 ,  F02D41/0052 ,  F02D2041/141 ,  F02P5/152 ,  Y02T10/46 ,  Y02T10/47

    Abstract: The present invention provides for predicting peak cylinder temperatures above which knock in an engine may become more frequent and then provides one or more actuation approaches to reduce the knock of the engine while maintaining engine performance. The actuation approaches of the present invention include one or more of direct injection, engine gas recirculation, and spark retarding, where the application of one or more the actuation approaches is determined based upon using operational and engine characteristic inputs as well as modeling and estimation values as inputs in a feedforward control methodology.

    Abstract translation: 本发明提供了预测在最高气缸温度下，发动机爆震可能变得更加频繁的高峰值气缸温度，然后提供一种或多种致动方法，以在保持发动机性能的同时减少发动机的撞击。 本发明的致动方法包括直接喷射，发动机气体再循环和火花熄灭中的一种或多种，​​其中基于使用操作和发动机特性输入以及建模和估计值来确定应用一个或多个致动方法 作为前馈控制方法中的输入。

    VARIABLE IGNITION ENERGY MANAGEMENT
    19.
    发明申请
    VARIABLE IGNITION ENERGY MANAGEMENT 有权
    可燃点火能源管理

    公开(公告)号：US20160097367A1

    公开(公告)日：2016-04-07

    申请号：US14506223

    申请日：2014-10-03

    Applicant: Cummins Inc.

    Inventor： Samuel C. Geckler ,  David Stroh ,  Steven J. Kolhouse

    IPC: F02P9/00 ,  F02M25/07 ,  F02D41/00 ,  F02P13/00

    CPC classification number: F02P9/002 ,  F02D41/005 ,  F02D41/0085 ,  F02M26/05 ,  F02M26/43 ,  F02M26/46 ,  F02M26/47 ,  F02P5/045 ,  F02P5/1512 ,  F02P13/00 ,  Y02T10/46 ,  Y02T10/47

    Abstract: A system, method, and engine control module for energy ignition management of a combustion engine. The method may be performed by the system or the engine control module. The method includes determining operating conditions of the combustion engine, setting ignition energy characteristics for a dedicated EGR cylinder and a non-dedicated EGR cylinder based on the operating conditions. The ignition energy characteristics include at least one of magnitude of energy, current, voltage, and ignition energy duration. At least one characteristic of the ignition energy characteristics for the non-dedicated EGR cylinder is different than a corresponding characteristic for the dedicated EGR cylinder. The method also includes energizing ignition aid plugs based on the ignition energy characteristics.

    Abstract translation: 一种用于内燃机能量点火管理的系统，方法和发动机控制模块。 该方法可以由系统或发动机控制模块执行。 该方法包括基于操作条件确定内燃机的操作条件，设定专用EGR气缸和非专用EGR气缸的点火能量特性。 点火能量特征包括能量，电流，电压和点火能量持续时间的至少一个。 非专用EGR气缸的点火能量特性的至少一个特征与专用EGR气缸的相应特性不同。 该方法还包括基于点燃能量特征激发点火助焊剂塞。

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