A compression ignition type engine, wherein a first combustion where the amount of the recirculated exhaust gas supplied to the combustion chamber is larger than the amount of recirculated exhaust gas where the amount of production of soot peaks and almost no soot is produced and a second combustion...http://www.google.co.uk/patents/US6131388?utm_source=gb-gplus-sharePatent US6131388 - Compression ignition type engine
