Abstract
During the development of two- and four-stroke medium-speed diesel engines at Sulzer it was realized that a minimized movement of air before and during combustion improves some of the performance characteristics of highly loaded diesel engines. The paper describes the theoretical considerations behind a new injection system giving a uniform fuel distribution and adequate atomization in an open combustion chamber with minimized air movement. The required high-pressure gradients towards the end of injection increase the danger of mechanical and cavitation attack on injection equipment components. The theoretical work and component design which helped to avoid such attack is discussed. The records obtained with new measuring equipment and some service results will also be shown.
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