Hot isostatically pressed reaction-bonded silicon nitride prechambers for the diesel engine

The aim of this work was to design a silicon nitride prechamber for a diesel engine in the 2- to 3-L range, to calculate temperature and stress distributions, and to test these ceramic prechambers in a fired engine under all working conditions. Another goal was the development of a processing technique for mass production of dense silicon nitride prechambers. For the production of components in narrow tolerances without postmachining, injection molding of silicon powder, dewaxing, nitriding, encapsulation, and postdensification by hot isostatic pressing was decided to be the most suitable procedure.