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公开(公告)号:WO2013115712A1
公开(公告)日:2013-08-08
申请号:PCT/SE2013/050067
申请日:2013-01-30
Applicant: SENFUSION AB
Inventor: ÄNGEBY, Jakob
CPC classification number: F02P5/151 , F02D35/021 , F02D41/0085 , F02D41/1497 , F02D41/221 , F02D41/263 , F02P5/1512 , F02P5/1514 , F02P2017/125 , G01L23/221 , G01M15/00 , G01M15/11 , Y02T10/46
Abstract: A method for extracting characterizing features from an ion current trace retrieved from spark plugs of cylinders of an internal combustion engine, comprises the steps of: i. dividing the ion current signal into crank angle subintervals; ii. calculating a measure of ion current in each crank angle subinterval; and iii. Performing a calculation on the measure of ion currents from different subintervals such that the result of the calculation is dimension free. Further it relates to a method of monitoring combustion processes where a plurality of ion current signals from a number of spark plugs (4A, 4B) are retrieved and used in combination.
Abstract translation: 一种从内燃机汽缸的火花塞取出的离子电流迹线提取特征特征的方法,包括以下步骤: 将离子电流信号分成曲柄角子区间; II。 计算每个曲柄角次间隔中离子电流的测量值; 和iii。 对来自不同子间隔的离子电流的测量进行计算,使得计算结果是无尺寸的。 此外,本发明涉及一种监测燃烧过程的方法,其中来自多个火花塞(4A,4B)的多个离子电流信号被组合使用。