公开(公告)号：US20140188369A1

公开(公告)日：2014-07-03

申请号：US14097852

申请日：2013-12-05

Applicant: STMicroelectronics S.r.I.

Inventor： GiovanniLuca TORRISI ,  CalogeroAndrea TRECARICHI

IPC: F02P9/00

CPC classification number: F02P9/00 ,  F02P3/051 ,  F02P3/0552 ,  F02P17/12 ,  F02P2017/121

Abstract: A control apparatus of an engine ignition spark plug includes a switch having a control terminal and an output terminal connected to an external transformer. The switch assumes a closed state for supplying energy to the transformer, and an open state for the transformer to supply energy to the spark plug. A measuring module measures a time duration where, in the open state, a voltage at the output terminal of the switch decreases from a first value to a second value. A detecting module detects an operating condition of the spark plug based on comparing the measured time duration to a time threshold, and to generate a detecting signal based on the comparing.

Abstract translation: 发动机点火火花塞的控制装置包括具有连接到外部变压器的控制端子和输出端子的开关。 开关处于向变压器供电的关闭状态，以及变压器向火花塞供电的打开状态。 测量模块测量在开启状态下开关输出端的电压从第一值降至第二值的持续时间。 检测模块基于将测量的持续时间与时间阈值进行比较来检测火花塞的运行状况，并且基于该比较产生检测信号。