초록 ▼

A ceramic/metallic, low polluting, long life, high performance, two-cycle gasoline engine that requires no oil lubrication. This engine eliminates the need for oil lubrication by: a) incorporating advanced ceramic materials, such as silicon nitride for critical engine components, b) employing the us

A ceramic/metallic, low polluting, long life, high performance, two-cycle gasoline engine that requires no oil lubrication. This engine eliminates the need for oil lubrication by: a) incorporating advanced ceramic materials, such as silicon nitride for critical engine components, b) employing the use of gasoline as well as the products of combustion of gasoline as lubricants for some critical surfaces, and c) engineering design approaches for critical engine components and assemblies. The elimination of the need for oil lubrication allows the engine to produce far less pollutants than conventional two-cycle engines.

대표청구항 ▼

[ What is claimed is:] [1.] A two-cycle combustion engine, comprising:an engine cylinder consisting essentially of a ceramic material;an engine piston consisting essentially of a ceramic material and reciprocable within said engine cylinder;a piston pin consisting essentially of a ceramic material a

[ What is claimed is:] [1.] A two-cycle combustion engine, comprising:an engine cylinder consisting essentially of a ceramic material;an engine piston consisting essentially of a ceramic material and reciprocable within said engine cylinder;a piston pin consisting essentially of a ceramic material and having an outer diameter and passing through said engine piston; anda connecting rod having a metallic portion and positioned within said ceramic piston and further having a cylindrical housing at its distal end and including a cylindrical passageway for receiving said ceramic piston pin, said cylindrical passageway in said connecting rod being matingly and slidingly engageable within the outer diameter of said cylindrical passageway; the distance between the outer circumference of said piston pin and the inner circumference of said cylindrical passageway defining a gap, said gap increasing about twenty percent at normal engine operating temperatures compared to ambient temperatures.