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| Number | Title | Issue Date |
| 8065985 | Piston having a central cooling gallery with a contoured flange A piston has an upper crown portion with an upper combustion wall against which combustion forces act and a lower crown portion with a pair of pin bosses spaced for receipt of a small end of a connecting rod therebetween. The upper crown portion and the lower crown ... | 11/29/2011 |
| 8065984 | Piston for internal combustion engine The invention relates to a piston (10, 110, 210, 310, 410) for an internal combustion engine, comprising a piston head (11) with at least one piston crown (12) which is exposed to at least one jet of combustion gases, and a piston shaft (17 | 11/29/2011 |
| 7765975 | Engine cylinder block An engine cylinder block formed with an integral pump housing that reinforces the cylinder block and which has a communicating passage with the interior of the cylinder block that has an outer surface that is inclined upwardly of the cylinder block to permit gasses ... | 08/03/2010 |
| 7607414 | Member for internal combustion engine and production method thereof A member for an internal combustion engine, such as a piston, a valve and a fuel injection valve. The member includes a substrate. A carbon-based coating film is formed on the substrate to cover at least a part of a region of the substrate to which region fuel for t... | 10/27/2009 |
| 7434549 | Opposed double piston internal combustion engine An internal combustion engine including at least one engine cylinder includes a cylinder cavity with first and second stopping members interconnected by a cylinder wall, the cylinder further includes two piston members slidably moveable within said cylinder cavity a... | 10/14/2008 |
| 7322336 | Crankshaft bearing for an internal combustion engine Crankshaft bearings suitable for a reciprocating piston-type internal combustion engine having multiple cylinders are arranged in a housing made of a light metal alloy and include bearing bores for a crankshaft crank pins of a crankshaft. The bores having first and ... | 01/29/2008 |
| 7299772 | Cooling gallery fan assembly for a piston A piston for an internal combustion engine defining an axis of motion and including an annular cooling gallery defined within the piston. The cooling gallery extends annularly about the axis of motion of the piston. A plurality of annularly spaced fan blades is posi... | 11/27/2007 |
| 7294666 | Tire with component of rubber composition comprised of silica reinforcement and emulsion polymerization derived terpolymer rubber of diene/vinyl aromatic compound which contains pendant hydroxyl groups This invention relates to a tire having at least one component of a silica reinforced rubber composition comprised of an emulsion polymerization derived terpolymer rubber which contain pendant hydroxyl groups, particularly derived from diene hydrocarbon and vinyl ar... | 11/13/2007 |
| 7273029 | Cylinder liner and cylinder block A cast iron cylinder liner of the present invention includes a plurality of grooves formed on an outer surface of the cylinder liner. Each of the grooves extends in a circumferential direction of the cylinder liner in a ring or spiral shape, and the grooves divide t... | 09/25/2007 |
| 7240655 | Compliant walled combustion devices II Combustion devices described herein comprise a compliant combustion chamber wall or segment. The compliant segment deforms during combustion in the combustion chamber. Some devices may include a compliant wall configured to stretch responsive to pressure generated b... | 07/10/2007 |
| 7237524 | Compliant walled combustion devices Combustion devices described herein comprise a compliant combustion chamber wall or segment. The compliant segment deforms during combustion in the combustion chamber. Some devices may include a compliant wall configured to stretch responsive to pressure generated b... | 07/03/2007 |
| 7219646 | In-line multicylinder combustion engine There is provided an in-line multicylinder combustion engine of a type, in which the length and the width of the combustion engine can be reduced; which can be assembled compact in size with its center of gravity lowered in position; in which mass centering in the c... | 05/22/2007 |
| 7216427 | Surface treatment of prefinished valve seat inserts A prehardened valve seat insert and a process for forming a prehardened valve seat insert for insertion into a cylinder head or an engine block of an internal combustion engine. The process comprises the steps of (a) forming the valve seat insert; (b) precision mach... | 05/15/2007 |
| 7185581 | Composite fluid actuated cylinder A fluid actuator having a honed metallic sleeved inner liner assembled with fitted end caps. The inner liner and end caps are wound with carbon reinforced fiber filaments in both longitudinal and hoop orientations so as to withstand increased fluid pressure over tra... | 03/06/2007 |
| 7171936 | Piston having a patterned coating and method of applying same The present invention relates to a piston adapted for reciprocal movement within the cylinders of an internal combustion engine. The piston includes a body having a crown formed at the uppermost margins of the body and a skirt, depending from the crown, adapted for ... | 02/06/2007 |
| 7150309 | Cylinder bore liners for cast engine cylinder blocks A cast-in-place cylinder bore liner (15) is disclosed for use in sand casting of engine cylinder blocks, the cylinder bore liner (15) having a protuberant portion (60) adjacent a first end (61) thereof, whereby accuracy in the positioning... | 12/19/2006 |
| 7097780 | Aluminum composite material and method of producing the same An aluminum composite material has a surface structure in which a part of lubricative granules projects by 2 μm to 25 μm from the surface of the aluminum alloy base material. The lubricative property of the lubricative granules is utilized sufficiently, and the ab... | 08/29/2006 |
| 7086152 | Engine piston and manufacture thereof A method of forming a low-friction, helically ridged skirt surface of an engine piston comprises cutting a continuous groove in a piston body rotating about axis so that adjacent groove turns intersect as ridges and carry lubricating oil which forms a film on the ri... | 08/08/2006 |
| 7063053 | Combustion type power tool having fin for effectively cooling cylinder A combustion-type power tool includes a cylinder having a peripheral wall which has an inner peripheral surface and an outer peripheral surface. The peripheral wall is formed with an exhaust hole at a first axial position. A piston is reciprocally movable in an axia... | 06/20/2006 |
| 7035761 | Method for analyzing waviness of a surface A method for analyzing waviness of a surface. The method includes measuring a height of the surface, producing a set of data points indicative of a waviness profile, selecting a subset of the set of data points, calculating a waviness height of the subset, repeating... | 04/25/2006 |
| 6973907 | Cylinder block for internal-combustion engine In a cylinder block for an internal-combustion engine, a cap-mounting bulk portion is connected with both first and second side walls of a crankcase formed below a lower deck. Each of first and second bulk connection portions connecting the first and second side wal... | 12/13/2005 |
| 6973367 | Method for producing a bore In a method for machining bores of workpieces with a desired nominal shape of the bores in operative condition, a bore with a desired nominal shape in inoperative condition is produced in a workpiece and the workpiece is then put in operative condition. A deviation ... | 12/06/2005 |
| 6957638 | Piston for an internal combustion engine A one-piece piston for an internal combustion engine, having a ring-shaped cooling channel arranged in the outer region of the piston head, is proposed, which is closed off by a ring-shaped cooling channel cover structured towards the side of the pin bosses as a sup... | 10/25/2005 |
| 6941914 | Internal combustion engine A twin cylinder engine, includes a pair of cylinder members mounted to mounting surfaces of a crankcase, and cylinder heads mounted to the cylinder members. The cylinder members are modular components, which may be pre-assembled with components of the valve train as... | 09/13/2005 |
| 6938603 | Method for the production of a one-piece piston for an internal combustion engine A method for the production of a one piece piston for an internal combustion engine. The piston has a ring shaped cooling channel arranged in an outer region of a piston head. The channel is partially closed off by a circumferential projection structured as an oil g... | 09/06/2005 |
| 6886504 | Engine of reciprocating piston type An engine of reciprocating piston type includes a cylinder block (4) with one or more cylinders (2), each of which receives a respective piston (10) and is defined by a respective cylinder barrel (8), which is integral with the reminder o... | 05/03/2005 |
| 6832588 | Fuel injector-spark plug combination A fuel injector-spark plug combination includes a fuel injector for the direct injection of fuel into a combustion chamber of an internal combustion engine, and a spark plug for igniting the fuel injected into the combustion chamber, and has a spark-plug insulator i... | 12/21/2004 |
| 6823852 | Low-emission internal combustion engine A method of operating an internal combustion engine under high charge dilution conditions using a hydrogen-rich fuel is disclosed. The high charge dilution conditions are attained by diluting the hydrogen-rich fuel with gases such as excess air or recycled exhaust g... | 11/30/2004 |
| 6758299 | V-type internal combustion engine A V-type internal combustion engine is capable of preventing a crankcase and a transmission case from getting dirty by smoothly exhausting water, or the like, dropped between the crankcase and the transmission case and the cylinder block. The V-type internal combust... | 07/06/2004 |
| 6684844 | Piston and cylinder bore having improved scuffing resistance A piston assembly is provided for use in an engine. The piston assembly includes a piston body including a crown with a skirt extending from the crown. The skirt has an exterior surface. The exterior surface has a surface finish in a wave form with peaks ... | 02/03/2004 |
| 6585832 | Method to prevent specks or hairline cracks in, and premature failure of, airplane cylinder barrels The present invention relates to an improved method for the manufacture of aircraft engine cylinder barrels to prevent their premature failure due to hairline cracks or specks thought to be caused by caustic stress corrosion cracking during black oxide tr... | 07/01/2003 |
| 6584947 | Cylinder head gasket In a one-cylinder or multi-cylinder internal combustion engine there is provided in the cylinder cover (7) a drainage duct (12, 14), which at one end opens radially inward of the annular gasket in the region of the inner rim of the cylinder liner (2), and... | 07/01/2003 |
| 6557513 | Cylinder liner with reduced wall thickness on piston pin axis A cylinder liner has reduced wall thickness in a piston pin plane of the liner. A conventional wall thickness of the cylinder liner is maintained in piston thrust plane regions of the liner, where side-to-side motions of a piston reciprocating within the ... | 05/06/2003 |
| 6391474 | Cylinder liner The invention relates to a cylinder liner made from a hypereutectic aluminum/silicon alloy which is surrounded by a surround casting material, which is characterized in that the minimum ratio of the wall thickness of the surround casting material of the c... | 05/21/2002 |
| 6390049 | Air cooled oil free engine In a conventional internal combustion engine the cylinder wall constrains the connecting rod to a straight up and down motion. The wall of a valve-guide also constrains the valve movement to a straight up and down motion. In ACOFE, two staggered bellows c... | 05/21/2002 |
| 6240892 | Two stroke cycle engine An improved two stroke cycle engine is disclosed. The engine has an intake port for passing air into a cylinder of the engine and has a piston within the cylinder for reciprocal movement between a top dead center position and a bottom dead center position... | 06/05/2001 |
| 6148785 | Pistons and cylinders made of carbon-carbon composite materials An improved reciprocating internal combustion engine has a plurality of engine pistons, which are fabricated from carbon--carbon composite materials, in operative association with an engine cylinder block, or an engine cylinder tube, or an engine cylinder... | 11/21/2000 |
| 6145488 | Reduced volume scavenging system for two cycle engines A reduced volume scavenging system for a two cycle engine embodying a duplex cylinder having an upper cylinder bore and a reduced-diameter lower cylinder bore. The lower bore communicates with a crankcase that houses a crankshaft, connecting rod(s) and en... | 11/14/2000 |
| 6082320 | Cylinder block structure A plurality of head bolt holes (8) is formed in the top part (4) of a cylinder block (1) of an engine at prescribed intervals about the peripheries of cylinder bores (2). Female threads (8b) are formed in the head bolt holes (8) and wall buildups (9) are ... | 07/04/2000 |
| 6050234 | Two-cycle ceramic/metallic internal combustion engine 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 cr... | 04/18/2000 |
