To improve thermal efficiency of SI engines, increase of compression ratio or turbo boosting causes abnormal combustion such as preignition and knocking. These phenomena have been analyzed in both experimental and theoretical methods. Also, some ideas to control them will be briefly introduced.
Dr. Yasuo Moriyoshi took his PhD from Tokyo Institute of Technology in 1990 and entered Chiba University. He is now a full professor and also the head of Center for Power Source Research for Next-Generation Mobility at Chiba University.
He has been engaged in internal combustion engine research, such as in-cylinder gas motion, fuel spray, stratified charge combustion, cycle-to-cycle variation, HCCI, combustion control, ignition system, abnormal combustion and boosting system. Also, his current interest is real driving emissions.
He has established a venture company of "SERC" in 2011 to make engine research, such as consortia on highly boosted gasoline engines and co-generation natural gas engines.
He is the fellow of SAE, JSAE and JSME.