日本におけるWell-to-Wheelでの水素・合成燃料・バイオ燃料の温室効果ガス排出量予測

富永　諒・高須賀　蓮・越川　翔生・松村　恵理子・千田　二郎（同志社大学）

運輸部門での温室効果ガス（GHG）排出削減の手段として水素，合成燃料およびバイオ燃料などのカーボンニュートラル（CN）燃料が挙げられる．本研究の目的は日本においてWell-to-WheelでのCN燃料の有用性を評価することである．本報では，CN燃料についてGHG排出量を算出，比較した結果を報告する．

Tailored Cooling and Charge Motion Concept for Spark Ignited Hydrogen Combustion Engine to Achieve Highest Efficiency and Power Density

Lukas Virnich･Dieter Van Der Put (FEV)･Tsuyoshi Horiba (FEV Japan)

Within the development of H2 ICE the occurrence of uncontrolled combustion phenomena (pre-ignition and knocking) is the limiting factor for the performance of hydrogen engines. In this context, the homogeneity of the air/fuel mixture, the avoidance of hot zones in the combustion chamber, the appropriate layout of the ignition system and the lubrication oil formulation are decisive factors for avoiding combustion problems. Therefore, FEV has tailored the existing cooling system for a heavy-duty cylinder head for a hydrogen ICE with direct injection (DI) to ensure efficient and precise cooling of the combustion chamber in combination with an optimized port design.

Future Truck 2030+
-A Modular Software System Concept for Commercial Vehicle Applications-

Hubertus Ulmer･Joerg Mickeleit･Robert Mollik･Chris-Kilian Mueller･Thaddaeus Delebinski (IAV)

The automotive industry is changing. Especially BEV propulsion systems are emerging, while hydrogen or alternative fuel solutions are still niche applications. Worldwide, the change drives as well as the legal and infrastructure requirements are different. Therefore, a modular approach is necessary for finding tailored propulsion systems that fit to individual markets.
The proposed paper will show IAVs view on the market situations EU and JP to 2030 and beyond. A holistic model-based system simulation shows, which propulsion systems fit best for future truck applications in EU and JP. And IAVs modular, scalable propulsion system architecture for a major truck application.

Aerodynamic Design of Commercial Vehicles
-A Lever for Reducing Carbon Emissions and Increasing Operation Range-

Hubertus Ulmer･Stefan Reetz･Armando Estrada･Thaddaeus Delebinski (IAV)

The automotive industry is facing a demand for lowering CO₂ emission. For Commercial Vehicles, the drivers are not solely legislation, but also fleet operators in terms of Total Cost of Ownership. Especially for ZEVs, an increase of operation range is important.
The proposed paper will show IAVs Future Truck model. A long-haul truck application that meets 2030 and beyond requirements for a modern, aerodynamic optimized truck design. The design was found, using experimental results from wind tunnel and on-road tests as well as initial CFD calculations. The paper will demonstrate, how aerodynamic measures lead a to corresponding CO₂ reduction.