Structure of divided combustion chamber for diesel engine.

摘要

Herein disclosed is a structure of a divided combustion chamber or a pre-combustion chamber of a Diesel engine of the type, in which the divided combustion chamber is composed of an upper ceramics member having a substantially hemispherical head and a lower ceramics member having an injection port. Either one or both of the upper and lower ceramics members is/are formed with longitudinally and/or transversely extending cut or cuts, slit or slits, and/or groove or grooves at least a portion of the outer surface or surfaces of one or two of those ceramics members. Thus, the resistance of the ceramics members to any rupture is improved so that the divided combustion chamber made of ceramics has highly improved durability.