Development of Elemental Technologies using Ethanol-Containing Fuel for Gasoline Engine

Tomohiro Nakayama･Ryo Iwashita･Takahiro Seino･Yuuki Itou･Masami Shiki･Shohei Matsuoka･Kenu Takahashi (SUBARU)

This paper describes the results of actual verification of fuel characteristics such as power output and exhaust gas emissions, as well as reliability using ethanol-containing fuel (E30 or higher), as well as issues and countermeasures.

Multi-Cylinder Demonstration of a Pre-Chamber Lean-Burn Gasoline Combustion System using Real-Time Fuel Reforming

Makoto Kaneko (Chiba University)･Takuya Kondo･Katsuki Hayashi (Futaba Industrial)･Tatsuya Kuboyama (Chiba University)･Toshio Yamada (Sustainable Engine Research Center)･Yasuo Moriyoshi (Chiba University)･Takashi Yoshida (IHI)

In the two preceding reports, we demonstrated low NOx emissions and highly efficient combustion in a single-cylinder engine using a high-pressure storage tank containing the same composition as the experimentally verified reformed gas and mechanical supercharging.
In this study, we conducted a feasibility study on a four-cylinder system using real-time fuel reforming with high controllability achieved through improved warm-up heating using halogen lamps. Through a 1D simulation study, we confirmed that this can be achieved even with a small single-stage turbocharger.

Research on Small Two-Stroke Opposed Piston Power Unit

Akira Iijima･Yoshiaki Yamazaki･Jinru Liu･Shumpei Fukushima･Yusuke Otaki･Ikumi Okawara･Sou Watanabe (Nihon University)

Internal combustion engines for electric powertrains are required to have high power density, high thermal efficiency, and low vibration and noise characteristics. As an engine that can achieve such characteristics, we focused on the two-stroke opposed piston engine. In this study, a small two-stroke opposed piston engine have prototyped and investigated its basic combustion characteristics.