公开(公告)号：US10544773B2

公开(公告)日：2020-01-28

申请号：US15141206

申请日：2016-04-28

Applicant: Caterpillar Inc.

Inventor： William Hoban ,  Morteza Rezaei ,  Ioan Paduret ,  James Siegle

IPC: F02P17/12 ,  F02P17/02

Abstract: An engine ignition system for a spark-ignited engine includes a sparkplug and a control system having primary ignition circuitry, secondary ignition circuitry coupled with electrodes of the sparkplug, and sensing circuitry. A control device determines a timing of spark production based on a pattern of varying of an electrical property in the primary ignition circuitry. An inflection point in a sensed current signal may be detected to determine the timing.

公开(公告)号：US20170314524A1

公开(公告)日：2017-11-02

申请号：US15141206

申请日：2016-04-28

Applicant: Caterpillar Inc.

Inventor： William Hoban ,  Morteza Rezaei ,  Ioan Paduret ,  James Siegle

IPC: F02P17/12 ,  F02P17/02

CPC classification number: F02P17/12 ,  F02N2300/302 ,  F02P3/04 ,  F02P17/02

Abstract: An engine ignition system for a spark-ignited engine includes a sparkplug and a control system having primary ignition circuitry, secondary ignition circuitry coupled with electrodes of the sparkplug, and sensing circuitry. A control device determines a timing of spark production based on a pattern of varying of an electrical property in the primary ignition circuitry. An inflection point in a sensed current signal may be detected to determine the timing.