公开(公告)号：US5387870A

公开(公告)日：1995-02-07

申请号：US2165

申请日：1993-01-08

申请人： Benjamin P. Knapp ,  Robert Trenary ,  James T. Walters ,  Clarence B. Allgor ,  David T. Bach

发明人： Benjamin P. Knapp ,  Robert Trenary ,  James T. Walters ,  Clarence B. Allgor ,  David T. Bach

IPC分类号： F02P17/08 ,  F02P17/10 ,  F02P17/12 ,  G01M15/00 ,  F02P17/00

CPC分类号： F02P17/08 ,  F02P17/10 ,  F02P17/12

摘要： The invention is a method and apparatus for extracting and analyzing features in real time from primary or secondary ignition waveforms, including engine probes, sampling device, and a processor that extracts from the waveform features such as peak firing height, firing line duration, firing line slope, firing line noise, post firing line duration, primary oscillations, and dwell interval duration and compares them against fixed thresholds and running averages to detect anomalies. Anomalies are reported as they occur allowing diagnosis of transient events as well as steady conditions. Waveforms with or without anomalies may be stored and retrieved as needed.

摘要翻译： 本发明是一种用于从主要或次要点火波形实时提取和分析特征的方法和装置，包括发动机探针，采样装置和从波形特征提取的处理器，例如峰值点火高度，点火线持续时间，点火线 斜坡，点火线噪声，点火线持续时间，主振荡和停留间隔持续时间，并将其与固定阈值和运行平均值进行比较，以检测异常。 报告异常情况，允许诊断瞬态事件以及稳定状态。 有或没有异常的波形可以根据需要进行存储和检索。