A control apparatus is configured to enhance turbulence in the cylinder produced by the fuel spray, and to improve combustion stability (promote flame propagation) in an ATDC designed to reduce HC and/or achieve early activation of the catalyst. Ignition timing is set to compression top dead center or...http://www.google.de/patents/US20050161020?utm_source=gb-gplus-sharePatent US20050161020 - Direct fuel injection/spark ignition engine control device
