Cooperated control of multi stage injection system for direct injection gasoline engine. - Ikue Kawasumi; Yuji Yasui; Kosuke Higashitani; Hisashi Ito (ACC, 2006)

The Application of Delta-Sigma Modulation to A Continuously Variable Valve Lift Engine. - Yuji Yasui; Kanako Shimojo; Kosuke Higashitani (CCA, 2007)