Influence of Valve-Seat Angles to Operation Values and Emissions of Medium-Speed Diesel Engines
Pubblicato online: 19 mar 2023
Pagine: 173 - 179
Ricevuto: 14 set 2022
Accettato: 11 dic 2022
DOI: https://doi.org/10.2478/ama-2023-0019
Parole chiave
© 2023 Leander Marquardt et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
For the development of gas exchange for large diesel engines, a compromise has to be found between efficient valve-flow and the time between overhauls. On the one hand, large effective flow areas, especially during valve-overlap, are demanded. On the other hand, there are limitations of cylinder bore regarding the maximum diameter of inlet and outlet valves and the minimum distance (dead space) between valves and piston, as well as wear-related smaller seat angles. For large medium-speed diesel engines, a valve-seat angle of