Spark producing system's e.g. ignition system, malfunction detecting device for motor vehicle, has determination unit determining electromagnetic signature component of ignition system and sensor sensing signature characteristics of system

摘要

The device (24) has a determination unit for determining an electromagnetic signature component of a spark producing system e.g. ignition system (1), and comprising a sensor (14) i.e. wire, for sensing electromagnetic signature characteristics of the system. The sensor is connected to a wiring harness (4) of the system by galvanic, capacitive or inductive coupling. The determination unit has parts (15, 16) for determining the electromagnetic signature component of the system based on a signal provided by the sensor. A processing unit (13) processes the signals received by the sensor. An independent claim is also included for a method for producing a malfunction of a spark ignition system.