| 摘要 |
PURPOSE:To restrict occurrence of cracks in a ceramic member by giving compressive force to the ceramic member by means of an iron-family-sintered member and combining the opening part of the ceramic member with that of the iron-family-sintered member. CONSTITUTION:A hollow part 5 is provided as a precombustion chamber. Combustion-injection-nozzle-through-holes 2 and 6 in addition to glow-plugs-through- holes 3 and 7 are drilled through the chamber. A ceramic member 4 is given compressive force by an iron-family-sintered member 1, which encloses the ceramic member 4. Opening part of the ceramic member 4 and that of the iron- family-sintered member 1 are combined together via a sintered combining member 16. With this contrivance, occurrence of cracks caused by difference in degree of expansion between the inner surface and the outer surface of the ceramic member can be reduced. |
