초록 ▼

An internal combustion engine of either two-cycle or four-cycle construction including a block having at least one cylinder bore therein having sidewalls carrying a liner of a structural fiber reinforced ceramic matrix composite material disposed in sealed fiber reinforced sliding relationship withi

An internal combustion engine of either two-cycle or four-cycle construction including a block having at least one cylinder bore therein having sidewalls carrying a liner of a structural fiber reinforced ceramic matrix composite material disposed in sealed fiber reinforced sliding relationship within the cylinder bore, and a cylinder head sealing atop end of the cylinder bore to form a closed combustion chamber in combination with the piston. The cylinder head also has the structural fiber reinforced ceramic matrix composite material disposed on an inner surface thereof facing the combustion chamber. The preferred engine is a two-cycle engine having an externally scavenged intake system and an oil sump lubricating system thereby eliminating the need to separately mix or inject lubricating oil. Higher operating temperatures and closer tolerances allow higher fuel efficiency and less pollutant production. A preferred structural fiber reinforced ceramic matrix composite material and the method of making same is also disclosed.

대표청구항 ▼

[ Wherefore, having thus described the present invention, what is claimed is:] [1.] A method of forming a structural fiber reinforced ceramic matrix composite cylinder head for an internal combustion engine comprising:a) coating fibers of a fiber system with an interfacing material which prevents ad

[ Wherefore, having thus described the present invention, what is claimed is:] [1.] A method of forming a structural fiber reinforced ceramic matrix composite cylinder head for an internal combustion engine comprising:a) coating fibers of a fiber system with an interfacing material which prevents adherence of a modified cementatous resin containing organic binders and derived by emulated polymer composite processing techniques;b) disposing a pre-ceramic polymer resin throughout the fiber system of the cylinder head so that the coated fibers are mixed with the polymer-derived ceramic resin;c) forming the resin containing the coated fibers into a cylinder head;d) firing the cylinder head at a temperature and for a time sufficient to convert the resin to a ceramic; ande) providing a device for transferring heat away from a top surface of the cylinder head to maintain the cylinder head below a threshold temperature during operation of the cylinder head.