Study on control algorithm of dual fuel engine system with fuel produced from biomass

2014 Fiscal Year Final Research Report

• Project/Area Number: 24760157
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Thermal engineering
• Research Institution: The University of Tokyo
• Principal Investigator: YAMASAKI Yudai 東京大学, 工学(系)研究科(研究院), 准教授 (60376514)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: エンジン / バイオマス

Outline of Final Research Achievements

Aiming to develop control system of dual fuel engine (DFE) with fuels produced from biomass, first, a prediction model of the combustion of DFE is developed by modifying the previous work. The model shows agreement with experiments changing H2 content in gas fuel. Next, influences of liquid fuel injection conditions, the ratio of gas fuel to liquid fuel, and gas fuel compositions on ignition and combustion are investigated in experiment. Retarded liquid fuel injection is required for higher H2 content fuel to achieve higher thermal efficiency. Finally, effects of ozone addition to pre-mixture are investigated for increasing freedom of control and for understanding the reaction mechanism. Ozone influences on auto-ignition and combustion of pre-mixture but does not influence on flame propagation initiated from diesel fuel injection. It is clarified by calculation with elementary reactions that pre-mixture added ozone produce H2O2 before ignition and H2O2 accelerate ignition.

Free Research Field

内燃機関