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1.发明申请METHOD AND PROCESSING SYSTEM OF SENSED IONIZATION CURRENT DATA FOR REAL TIME ESTIMATION OF COMBUSTION CHAMBER PRESSURE IN A SPARK IGNITION ENGINE 有权感应电流电流数据的方法和处理系统，用于实时估计火花点火发动机的燃烧室压力公开(公告)号：US20140336956A1
公开(公告)日：2014-11-13
申请号：US14272980
申请日：2014-05-08
Applicant: STMicroelectronics S.r.l.
Inventor： DavideGiuseppe Patti , Mario Paparo
CPC classification number: F02P17/12 , F02D35/021 , F02D35/024 , F02D41/22 , F02D41/2422 , F02D41/2425 , G01M15/042 , G01M15/09 , Y02T10/40
Abstract: The pressure in the combustion chamber of an electronically controlled spark plug ignition engine may be estimated in real time mode without specific sensors by processing sensed ionization current data to calculate features of the current waveform proven to be correlated to the pressure inside the engine cylinders and correlating them on the basis of a look up table of time invariant correlation coefficients generated through a calibration campaign of tests on a test engine purposely equipped with sensors. A mathematical model of the electrical and physical spark plug ignition system and combustion chamber of the engine is refined during calibration by iteratively testing the interactive performance of correlation coefficients of related terms of a mathematical expression of the model and comparing the expressed pressure value with the real pressure value as measured by a sensor.
Abstract translation: 电子控制的火花塞点火发动机的燃烧室中的压力可以通过处理感测的电离电流数据而实时模式估计，而不需要特定的传感器来计算被证实与发动机气缸内的压力相关的电流波形的特征， 它们基于通过针对具有传感器的测试引擎上的测试的校准活动产生的时间不变相关系数的查找表。 在校准期间，通过迭代测试模型的数学表达式的相关项的相关系数的交互性能，并将表达的压力值与实际值进行比较，来对发动机的电火花塞点火系统和燃烧室的数学模型进行精细化 由传感器测量的压力值。
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公开(公告)号：US09752548B2
公开(公告)日：2017-09-05
申请号：US14272980
申请日：2014-05-08
Applicant: STMicroelectronics S.r.l.
Inventor： DavideGiuseppe Patti , Mario Paparo
CPC classification number: F02P17/12 , F02D35/021 , F02D35/024 , F02D41/22 , F02D41/2422 , F02D41/2425 , G01M15/042 , G01M15/09 , Y02T10/40
Abstract: The pressure in the combustion chamber of an electronically controlled spark plug ignition engine may be estimated in real time mode without specific sensors by processing sensed ionization current data to calculate features of the current waveform proven to be correlated to the pressure inside the engine cylinders and correlating them on the basis of a look up table of time invariant correlation coefficients generated through a calibration campaign of tests on a test engine purposely equipped with sensors. A mathematical model of the electrical and physical spark plug ignition system and combustion chamber of the engine is refined during calibration by iteratively testing the interactive performance of correlation coefficients of related terms of a mathematical expression of the model and comparing the expressed pressure value with the real pressure value as measured by a sensor.
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