TY - GEN A1 - Berg, Heinz Peter A1 - Dückershoff, Roland A1 - Hertrampf, Stefan A1 - Kloshek, Alexander A1 - Himmelberg, Axel T1 - Development of an injector spark plug for the injection and ignition of gaseous fuels in internal combustion engines for use in conventional systems T2 - AIP Conference Proceedings N2 - An injection-ignition-system from an additive manufacturing process is presented with which gaseous fuels can be injected into the combustion chamber of an internal combustion engine under pressures of up to 80 bar and ignited. With the presented system, an improvement of the thermal efficiency can be achieved by a late fuel injection in the compression phase and with post-injection. With such a system, the engine becomes purely air-intake and a better filling level is achieved. Injection and ignition can take place simultaneously with this application. The system is designed with a high pressure stability for all components (200 bar) and can therefore also be used with higher compressions and combustion pressures. The spatial distribution of the fuel in the combustion chamber is achieved by angled fluid ports and also allows additional injections and ignitions in the power stroke and in the relief phase. This can improve thermal efficiency. A built-in annular channel also enables two different fuels to be injected as a mixing chamber. Finally, initial measurement results are shown for the use of hydrogen fuel in a single-cylinder engine. Indexing data and performance data of the engine indicate that the system can represent a significant increase in the efficiency of combustion engines with hydrogen fuel. Furthermore, the system can be used in conventional vehicle systems, whereby only fuel conditioning and control systems need to be adapted. KW - Combustion engine KW - Injection KW - Ilnition KW - Hydrogen Y1 - 2024 U6 - https://doi.org/10.1063/5.0238165 VL - 3626 (2024) SP - 1 EP - 8 PB - AIP Publishing CY - Chiang Mai ER -