Method and apparatus for detecting spark failure based on the number of crankshaft revolutions
    1.
    发明授权
    Method and apparatus for detecting spark failure based on the number of crankshaft revolutions 失效
    基于曲轴转数检测火花故障的方法和装置

    公开(公告)号:US06577945B2

    公开(公告)日:2003-06-10

    申请号:US09820322

    申请日:2001-03-29

    IPC分类号: F02D4100

    CPC分类号: G01M15/11

    摘要: A novel method and a suitable device for the cylinder-specific determination of spark failures on a reciprocating engine through a classifying unit based on measurement data that contain information about the number of crankshaft revolutions. For this process, the measurement data are subjected to a pre-processing procedure in the classifying unit and classified through a classification process, wherein within the framework of the pre-processing procedure the data are subjected to a principal axis transformation (HAT). Due to the utilization of this resource-saving method for detecting spark failures on reciprocating engines in accordance with the invention, the processing requirements for once cycle are less than 5 Kflops, despite a measurement vector v length of 240. Due to the fact that the invented device requires only a single measurement data recorder, e.g. in the form of a simple gear ring that is attached to the crankshaft and coupled to a motion sensor, even the mechanical design can be produced inexpensively and it can be decoupled from thermal or other negative influences of the environment in a simple manner.

    摘要翻译: 基于包含关于曲轴转数的信息的测量数据,通过分级单元,用于气缸特定确定往复式发动机上的火花故障的新颖方法和合适的装置。 对于该处理,测量数据在分类单元中进行预处理过程,并通过分类处理分类,其中在预处理过程的框架内,对数据进行主轴变换(HAT)。 由于根据本发明利用这种用于检测往复式发动机上的火花故障的资源节省方法,尽管测量矢量v的长度为240,但是一次循环的处理要求小于5Kflops。由于以下事实: 本发明的设备仅需要一个测量数据记录器,例如 以简单的齿轮环的形式,其附接到曲轴并且联接到运动传感器,即使机械设计可以廉价地生产,并且可以以简单的方式与环境的热或其他负面影响分离。

    Regulation of true running for diesel engines
    3.
    发明授权
    Regulation of true running for diesel engines 失效
    柴油机真正运行规范

    公开(公告)号:US06820593B2

    公开(公告)日:2004-11-23

    申请号:US10169611

    申请日:2002-10-22

    IPC分类号: F02M700

    摘要: Contributions of individual cylinders of the internal-combustion engine to the rotational acceleration are determined by the rotational speed course of the crankshaft by individually cutting off the cylinders successively. From the thus obtained rotational speed course curves, a pulse response spectrum {right arrow over (I)} of an operating cycle is formed at least for the harmonic of the 0.5th order. In normal operation, the rotational speed course of the crankshaft is then continuously recorded above the angle of each operating cycle. By a Fourier transformation, Fourier coefficients are determined as a resultant {right arrow over (R)} at least of the harmonic of the 0.5th order. Correction factors for the injection quantities are obtained for equalization of the individual cylinders with respect to their rotational speed fractions. The components of the resultant {right arrow over (R)} situated in the direction of the pulse response vectors are multiplied with the pulse responses {right arrow over (I)} and are combined by addition.

    摘要翻译: 内燃机的各个气缸对旋转加速度的贡献由曲轴的旋转速度进行依次分别切断。 从这样得到的转速轨迹曲线中,脉冲响应谱(至少对于第0.5阶谐波形成操作周期的I的箭头),在正常操作中,曲轴的转速过程连续 记录在每个操作周期的角度之上,通过傅里叶变换,确定傅里叶系数作为结果(右箭头(R至少为0.5次的谐波),获得用于均衡的注入量的校正因子 单个圆柱体相对于它们的转速分数。所得到的{向右箭头(R)位于脉冲响应矢量的方向上的分量与脉冲响应相乘{向右箭头(I并通过加法组合)。