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Investigating the Potential of Two Individually Controlled Injectors per Rotor for a Direct Injection Hydrogen Wankel Engine Technische Universität Darmstadt
- Format:
- Book
- Conference/Event
- Author/Creator:
- Endres, Jonas, author.
- Beidl, Christian, author.
- Herold, Tim, author.
- Lavall, Philipp, author.
- Schmidt, Marvin, author.
- Hofmann, Silas, author.
- Kahl, Jonas, author.
- Conference Name:
- CO2 Reduction for Transportation Systems Conference (2026-06-09 : Turin, Italy)
- Language:
- English
- Subjects (All):
- Rotary engines.
- Combustion and combustion processes.
- Combustion chambers.
- Powertrains.
- Nitrogen oxides.
- Ground support.
- Knock.
- Fuel injection.
- Propellers and rotors.
- Local Subjects:
- Rotary engines.
- Combustion and combustion processes.
- Combustion chambers.
- Powertrains.
- Nitrogen oxides.
- Ground support.
- Knock.
- Fuel injection.
- Propellers and rotors.
- Physical Description:
- 1 online resource
- Place of Publication:
- Warrendale, PA SAE International 2026
- Summary:
- Hydrogen-fueled rotary engines offer a promising zero-emission solution for compact commercial powertrains. This study reports experimental results from the further development of a naturally aspirated, direct-injection hydrogen rotary engine by HTM. Initial applications, such as an airport baggage tractor, demonstrated technical feasibility but revealed pre-ignition that limited maximum torque. To address this, mixture formation was investigated using an experimental setup with two independently controlled injectors feeding a single rotor injection channel. The effects on operating behavior, efficiency, and NOx emissions were evaluated. The dual-injector configuration significantly shortens injection duration and improves spatial distribution of hydrogen within the combustion chamber. Enhanced mixture control suppresses pre-ignition and enables higher mean effective pressure. Systematic variation of injection timing under representative steady-state conditions also shows potential for NOx reduction through differentiated injector operation. In-cylinder pressure analysis and exhaust gas measurements provide detailed insight into combustion characteristics and abnormal events. The dual-injector setup increases torque capability and operational robustness without additional mechanical complexity, supporting the use of hydrogen rotary engines in compact hybrid systems and stationary power applications
- Notes:
- Vendor supplied data
- Access Restriction:
- Restricted for use by site license
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