Global Patent Index - EP 1216356 B1

EP 1216356 B1 2003-06-04 - METHOD AND DEVICE FOR GENERATING A SWITCHING OR CONTROL SIGNAL

Title (en)

METHOD AND DEVICE FOR GENERATING A SWITCHING OR CONTROL SIGNAL

Title (de)

VERFAHREN UND ZEITSCHALTUNG ZUR ERZEUGUNG EINES SCHALT- ODER STEUERSIGNALS

Title (fr)

PROCEDE ET CIRCUIT DE TEMPORISATION PERMETTANT DE PRODUIRE UN SIGNAL DE COMMUTATION OU DE COMMANDE

Publication

EP 1216356 B1 (DE)

Application

EP 00967808 A

Priority

  • DE 19946994 A
  • EP 0009457 W

Abstract (en)

[origin: DE19946994A1] The invention relates to a method for generating a switching or control signal after a period that can be predetermined. At the beginning of timing a voltage (U) is applied to an inductivity (L) that serves as a time function element. If the current (I) passing through the inductivity (L) exceeds a threshold value that can be predetermined, a current threshold detector (ID) emits the switching or control signal. In an electronic ignition system for internal combustion engines the ignition coil (L, PW, SW) does not only generate an ignition voltage but represents also a time function element for a timer system (UD1, UD2, LS) that cuts off the current (I) passing through the primary winding (PW) of the ignition coil (L) after a period that can be predetermined. The current (I) is cut off on the basis of a differential function dI/dt that is chosen so that the ignition voltage induced at the ignition coil (L) does not suffice to generate an ignition spark on the ignition plugs.

IPC 1-7 (main, further and additional classification)

F02P 3/045; H01H 43/00

IPC 8 full level (invention and additional information)

F02P 3/05 (2006.01); F02P 3/045 (2006.01); F02P 3/055 (2006.01); H03K 17/28 (2006.01); H03K 17/695 (2006.01)

CPC (invention and additional information)

F02P 3/045 (2013.01); F02D 2041/2017 (2013.01); F02D 2041/2031 (2013.01)

Designated contracting state (EPC)

FR GB IT

DOCDB simple family

DE 19946994 A1 20010405; DE 19946994 C2 20010913; EP 1216356 A1 20020626; EP 1216356 B1 20030604; JP 2003510519 A 20030318; US 2002075014 A1 20020620; US 6734676 B2 20040511; WO 0123756 A1 20010405