公开(公告)号：US20180202411A1

公开(公告)日：2018-07-19

申请号：US15742795

申请日：2016-07-05

Applicant: ELDOR CORPORATION S.P.A.

Inventor： Stefano SILVA ,  Eugenio CARUGATI ,  Pasquale FORTE ,  Alberto GRIMALDI

IPC: F02P23/04 ,  F02P15/10 ,  F02P3/04 ,  F02P17/12

CPC classification number: F02P23/04 ,  F02D35/021 ,  F02M27/042 ,  F02P3/0442 ,  F02P3/0453 ,  F02P15/10 ,  F02P17/02 ,  F02P17/12 ,  F02P2017/121 ,  F02P2017/125

Abstract: An electronic ignition system for an internal combustion engine comprises an ignition coil (2) provided with at least a primary winding (3) and a secondary winding (4), a switch (6) connected to the primary winding (3) and drivable in an open and/or closed position according to the value of a driving signal, a control unit (7) associated to the switch (6) and configured to drive it in open and/or closed position according to the value of the driving signal (G). Such system also comprises a voltage changing electronic element (8) connected to the electrical connection (5), operatively interposed between the electrical connection (5) and the primary winding (3), and configured to change the voltage value of the primary winding (3) according to the value of a control signal between at least a first (V1) and a second (V2) voltage value. The system also comprises a ionization measuring device (20) around said discharge gap (100a) of the spark plug (100) associated with the secondary winding (4) and arranged to detect a current value in the secondary winding (4) and to send a signal representative of said value to the control unit (7), wherein the control unit (7) is configured to activate said measuring device (20) upon the shutdown of the electric arc or spark.

公开(公告)号：US20210239056A1

公开(公告)日：2021-08-05

申请号：US17052007

申请日：2019-04-23

Applicant: ELDOR CORPORATION S.P.A. ,  FPT INDUSTRIAL S.P.A.

Inventor： Francesco SANARICO ,  Pasquale FORTE ,  Alberto GRIMALDI ,  Roberto PITTATORE

IPC: F02D35/02

Abstract: A method for monitoring an engine cylinder in an internal combustion engine includes, for each engine cycle, detection of the ionisation current generated in the cylinder in a predetermined time interval of a combustion cycle, generation of a signal representing the ionisation current and comparing a maximum value of the signal with a threshold value. Successively, the value of one or more parameters associated with the signal can be changed with respect to an equal number of corresponding reference values when the maximum value of the signal exceeds the threshold value, to reduce the maximum value of the signal in the time interval of a successive combustion cycle. The presence of water in the cylinder can be determined when the maximum value of the signal exceeds the threshold value for a predetermined first number of combustion cycles occurring within a predetermined period of time.