公开(公告)号：US10995726B2

公开(公告)日：2021-05-04

申请号：US15940366

申请日：2018-03-29

申请人： Woodward, Inc.

发明人： David C. Petruska ,  Sai Venkataramanan ,  Suraj Nair ,  Mark Notarfrancesco ,  Monte Wegner ,  Andy Vlietstra

IPC分类号： F02P17/12 ,  F02P17/10 ,  F02P3/045 ,  F02P3/08 ,  F02P3/05 ,  F02P5/15 ,  F02P9/00 ,  F02P15/08 ,  F02P17/02 ,  F02P3/01 ,  F02P11/06

摘要： The subject matter of this specification can be embodied in, among other things, a method that includes receiving a collection of measurements of electric current amplitude in a primary winding of an engine ignition system having the primary winding and a spark plug, identifying an ignition start time, identifying an inflection point based on the plurality of measurements, determining an inflection point time representative of a time at which the identified inflection point occurred, determining a spark start time based on an amount of time between the ignition start time and the inflection point time, and providing a signal indicative of the spark start time.

公开(公告)号：US20190301423A1

公开(公告)日：2019-10-03

申请号：US15940366

申请日：2018-03-29

申请人： Woodward, Inc.

发明人： David C. Petruska ,  Sai Venkataramanan ,  Suraj Nair ,  Mark Notarfrancesco ,  Monte Wegner ,  Andy Vlietstra

IPC分类号： F02P17/12 ,  F02P17/10 ,  F02P3/045 ,  F02P3/08 ,  F02P5/15 ,  F02P3/05

摘要： The subject matter of this specification can be embodied in, among other things, a method that includes receiving a collection of measurements of electric current amplitude in a primary winding of an engine ignition system having the primary winding and a spark plug, identifying an ignition start time, identifying an inflection point based on the plurality of measurements, determining an inflection point time representative of a time at which the identified inflection point occurred, determining a spark start time based on an amount of time between the ignition start time and the inflection point time, and providing a signal indicative of the spark start time.