Patent ID: 7997255
Filing Date: 2011-08-16
Classification: F02D,F02P,Y02T

Abstract:
1. An engine ignition control apparatus for controlling ignition in cylinders of a 4-cycle four cylinder engine using a pair ignition coils, wherein two of the four cylinders having a same phase belong to a first system, and a remaining two cylinders having another same phase belong to a second system, said engine ignition control apparatus comprising: a plurality of ignition maps comprising a first ignition map, a second ignition map, a third ignition map and a fourth ignition map; each of said ignition maps being associated with a respective one of said four cylinders; said pair of ignition coils comprising a first ignition coil and a second ignition coil provided for the respective said first and second systems; a stroke determination unit which determines strokes of the respective cylinders; an ignition map allocation unit which allocates a respective one of said ignition maps to each of said first system and said second system before said stroke determination of respective said cylinders, and which further allocates a respective one of said ignition maps to each of said cylinders after said stroke determination of said cylinders; and an ignition timing calculation unit which calculates ignition timings for the respective cylinders based on the ignition maps allocated to said cylinders.