SUBSIDIARY CHAMBER FOR DIESEL ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a subsidiary chamber capable of preventing the occurrence of a misfire and pale smoke by reducing the wetness of the subsidiary chamber wall surface due to the adhesion of an atomized fuel. SOLUTION: This subsidiary chamber 2 is intrusively formed in a cylinder head 1, and an injection part 5a of a fuel injector 5 is so faced to the subsidiary chamber 2 as to inject the atomized fuel (q) into the subsidiary chamber 2. A heat-resistant oil-repellent film 4 is so overlaid and formed on the inside wall surface 3 of the subsidiary chamber 2 that the contact angleθof each oil droplet Q of the atomized fuel (q) stuck to the oil-repellent film 4 is set larger than that of each oil droplet of the atomized fuel stuck to the surface of the subsidiary chamber forming material 2a.