An engine control device for controlling a multiple-cylinder engine, comprising: a plurality of ignition energy supply units (30a-d), which are provided for every cylinder; wherein each of the plurality of the ignition energy supply units (30a-d) is comprising a first (30a-1, 30b-1, 30c-1, 30d-1) and a second (30a-2, 30b-2, 30c-2, 30d-2) ignition systems; wherein each of the plurality of the ignition energy supply units (30a-d) is configured to overlap a discharge of the second ignition system (30a-2, 30b-2, 30c-2, 30d-2) and a discharge of the first ignition system (30a-1, 30b-1, 30c-1, 30d-1) to be output into an ignition plug; and a control unit which is adapted to transmit a common signal through a common signal line to each of the second ignition systems (30a-2, 30b-2, 30c-2, 30d-2) to control the second ignition system (30a-2, 30b-2, 30c-2, 30d-2), and wherein one side of the common signal line is connected to the control unit, the other side is branched in the middle thereof, and the branched signal lines are each connected to the second ignition wherein each of the plurality of the ignition energy supply units (30a-d) is further configured to receive an ignition signal (101a-d) from the control unit so as to perform the ignition of said ignition plug, wherein the control unit is configured to send one ignition signal (101a-d) per cylinder, wherein each of the first ignition system (30a-1, 30b-1, 30c-1, 30d-1) is connected to the ignition signal (101a-d) of the control unit belonging to the cylinder of said ignition plug to be ignited, characterised in that the second ignition system (30a-2, 30b-2, 30c-2, 30d-2) is connected to an ignition signal (101a-d) of the control unit belonging to another cylinder. a plurality of ignition energy supply units (30a-d), which are provided for every cylinder; wherein each of the plurality of the ignition energy supply units (30a-d) is comprising a first (30a-1, 30b-1, 30c-1, 30d-1) and a second (30a-2, 30b-2, 30c-2, 30d-2) ignition systems; wherein each of the plurality of the ignition energy supply units (30a-d) is configured to overlap a discharge of the second ignition system (30a-2, 30b-2, 30c-2, 30d-2) and a discharge of the first ignition system (30a-1, 30b-1, 30c-1, 30d-1) to be output into an ignition plug; and a control unit which is adapted to transmit a common signal through a common signal line to each of the second ignition systems (30a-2, 30b-2, 30c-2, 30d-2) to control the second ignition system (30a-2, 30b-2, 30c-2, 30d-2), and wherein one side of the common signal line is connected to the control unit, the other side is branched in the middle thereof, and the branched signal lines are each connected to the second ignition wherein each of the plurality of the ignition energy supply units (30a-d) is further configured to receive an ignition signal (101a-d) from the control unit so as to perform the ignition of said ignition plug, wherein the control unit is configured to send one ignition signal (101a-d) per cylinder, wherein each of the first ignition system (30a-1, 30b-1, 30c-1, 30d-1) is connected to the ignition signal (101a-d) of the control unit belonging to the cylinder of said ignition plug to be ignited, characterised in that the second ignition system (30a-2, 30b-2, 30c-2, 30d-2) is connected to an ignition signal (101a-d) of the control unit belonging to another cylinder.