Patent ID: 6766243
Filing Date: 2004-07-20
Classification: F02D,F02P

Abstract:
A device for ignition of an internal combustion engine comprising:a central control unit; and at least one peripheral unit, each peripheral unit allocated to a respective cylinder of the internal combustion engine and including a first comparator, a second comparator and a third comparator, each comparator configured to generate diagnostic signals, the first comparator configured to determine whether a primary current has exceeded a preselectable first threshold, the second comparator configured to determine whether a primary voltage has exceeded a preselectable second threshold, the third comparator configured to determine whether the primary voltage has dropped below a preselectable third threshold; wherein the central control unit is configured to transmit digital activation signals to the peripheral units to trigger the peripheral units to cause ignition of the respective cylinder; and wherein the peripheral units are configured to determine measured values representing states in the peripheral units and to transmit digital diagnostic signals to the central control unit as a function of the measured values; and wherein the central control unit is configured to determine at least one first time difference between the activation signals and the diagnostic signals for analysis of the diagnostic signals and to determine at least one second time difference between the diagnostic signals for analysis of the diagnostic signals.