Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 7360531 | Combustion chamber structure for spark-ignition engine This invention relates to a combustion chamber structure for a spark-ignition engine, which comprises a combustion chamber defined between a bottom surface of a cylinder head and a top surface of a piston in such a manner that the bottom surface of the cylinder head... | 04/22/2008 |
| 7284524 | Cylinder head assemblies Cylinder head assemblies including a cylinder head and a piston are disclosed. The cylinder head includes: a recessed valve region including a first and second bulbous portion connected by a waist, the first bulbous portion accommodating an intake valve and the seco... | 10/23/2007 |
| 7066115 | Internal combustion engine/hydraulic motor/fluid pump provided with opposite pistons An internal combustion engine has a pair of opposed pistons held within an elliptical guide of the engine housing. The pistons reciprocate within a cylinder attached to a shaft. A combustion chamber is formed within the shaft and positioned to be between the pistons... | 06/27/2006 |
| 6928997 | Direct injection engine An exhaust-valve-side portion of a bottom surface of a bowl is connected to an upper surface of a piston by a smoothly curved surface. Therefore, a separation of a tumble flow can be minimized and air flow introduced into the bowl is more strongly tumbled. Fuel mixe... | 08/16/2005 |
| 6874489 | Combustion chamber structure for internal combustion engine There are provided on an upper surface of a piston 13 which confronts to a combustion chamber two first squish areas A1 each containing a flat surface 13a extending along an outer circumferential portion the piston 13 in an arc-lik... | 04/05/2005 |
| 6609490 | Piston head for a spark ignition engine A piston for an internal combustion engine of the spark ignition type has cavities formed in the crown in a pattern to cover approximately 16 to 18 percent of the piston head surface area. The cavities are formed in a pattern wherein no cavity edge is clo... | 08/26/2003 |
| 6578547 | Spark-ignition internal combustion engine with direct injection A spark-ignition internal combustion engine with direct injection into the combustion chamber which operates according to the jet-guided combustion method, and includes at least one injection device and one ignition device per cylinder. In order to increa... | 06/17/2003 |
| 5941221 | Reciprocating engine combustion chamber A combustion chamber for reciprocating internal combustion engines greatly reduces large quench areas in the combustion chamber, and substantially matches the combustion chamber periphery with the upper edge circumference of the mating cylinder wall, to r... | 08/24/1999 |
| 5148778 | Combustion chamber for a self-igniting or spark-ignited valveless two-stroke internal combustion engine A combustion chamber assembly for a two-stroke internal combustion engine has, in the upper dead point position of the piston, a space defined between the piston bottom and the cylinder head which is of the shape of a frustum of a right-circular cone or t... | 09/22/1992 |
| 4951642 | Combustion chamber of internal combustion engine A combustion chamber structure including a cylinder head having a bottom surface for defining an upper portion of a combustion chamber, a piston having a top surface for defining a lower portion of the combustion chamber, an intake recess formed in the cy... | 08/28/1990 |
| 4899698 | Combustion chamber for two-stroke reciprocating engine, and and engine making use thereof The present invention relates to a combustion chamber in which two flows of gas are admitted via ports at the bottom of the cylinder, one of the flows being a mixture containing fuel and the other being a flow of pure air. These flows are admitted so that... | 02/13/1990 |
| 4846138 | Low profile internal combustion engine An internal combustion engine of the valve-in-head type having a low profile cylinder head which requires minimal headroom in the engine compartment of an automotive vehicle. The cylinder head has a rectilinear configuration with the valve trains disposed... | 07/11/1989 |
| 4719880 | Two stroke cycle internal combustion engines A direct injected two stroke cycle internal combustion engine having a cylinder, a cylinder head at one end of the cylinder, a piston mounted for reciprocation in the cylinder, and an inlet port and an exhaust port in the wall of the cylinder at substanti... | 01/19/1988 |
| 4471017 | High-temperature and thermal-shock-resistant thermally insulating coatings on the basis of ceramic materials A high-temperature and thermal-shock-resistant thermal insulating coating based upon flame- or plasma-sprayed ceramic materials. The coating consists of several layer sequences essentially of the same materials. Each layer sequence contains at least one c... | 09/11/1984 |
| 4465033 | Energy conversion cycle for internal combustion engine and apparatus for carrying out the cycle An energy conversion cycle for an internal combustion engine and an internal combustion engine capable of carrying out the process to produce work, the process characterized by the steps of forming fuel and air charges having fuel to air proportions varyi... | 08/14/1984 |
| 4445467 | Two-cycle stratified charge gas engine A two-cycle, gas-powered engine which is capable of operating over a wide range of loads including those (e.g. idle speed) which have previously caused misfirings in known engines of this type. A specially constructed head and piston assembly and a govern... | 05/01/1984 |
| 4341826 | Internal combustion engine and composite parts formed from silicon carbide fiber-reinforced ceramic or glass matrices A high strength, fracture tough, high temperature oxidatively stable, heat insulating internal combustion engine combustion chamber component is described made of a silicon carbide fiber reinforced ceramic matrix or a silicon carbide fiber reinforced glas... | 07/27/1982 |
| 4224918 | Cylinder head construction Cylinder head construction defining a hemispheric combustion chamber which includes a guide wall provided to impart swirl to the incoming air-fuel mixture. The guide wall facing the intake port defined by the cylinder head construction and generally paral... | 09/30/1980 |
| 4223647 | Slanted internal combustion engine Each cylinder of a slanted, in-line, overhead valve, internal combustion engine has intake and exhaust valves with axes which extend radially from and perpendicular to the camshaft axis. The camshaft axis is above an inclined plane which includes the cent... | 09/23/1980 |
| 4218880 | Spark-ignition internal combustion engine A spark plug is located in a combustion chamber so as to decrease the combustion time of the charge inducted into the combustion chamber. The charge is formed, before inducted into the combustion chamber, by mixing an air-fuel mixture and substantially in... | 08/26/1980 |
| 4217875 | Cylinder head for internal combustion engines, especially diesel engines A cylinder head for internal combustion engines, especially Diesel engines, with at least one opening for a passage forming an inlet or outlet and leading to a combustion chamber. This opening which is adapted to be closed and opened by a valve is on that... | 08/19/1980 |
| 4211189 | Internal combustion engine with dual induction system and more particularly to combustion chamber design thereof A spark ignition reciprocatory internal combustion engine with dual induction system is provided in which at low and intermediate loads when only a primary throttle valve within a primary induction system opens, a primary intake port passage within a cyli... | 07/08/1980 |
| 4211082 | Internal combustion engine with free floating auxiliary piston An internal combustion engine is disclosed. The engine includes a power cylinder, a power piston reciprocating therein and being connected to a rotating output crank. A free floating double acting auxiliary piston reciprocates within an auxiliary cylinder... | 07/08/1980 |
| 4201175 | Cylinder head construction Cylinder head construction defining a hemispheric combustion chamber and including a guide wall facing an intake port to impart swirl to an incoming air-fuel mixture and permit use of a lean air-fuel mixture. The position of the guide wall relative to the... | 05/06/1980 |
| 4146004 | Internal combustion engine including spark plug anti-fouling means Disclosed herein is an internal combustion engine including an ignition port having an outlet opening into a cylinder combustion chamber, a spark plug mounted in the ignition port, and a deflector located on the cylinder head adjacent the ignition port ou... | 03/27/1979 |
| 4137887 | Pistons for internal combustion engines A method of manufacturing a piston for an internal combustion engine in which a cast-in insert comprising a combustion chamber lip and a piston ring carrier joined by radial limbs is secured against loosening in service by spraying metal or cermet into a ... | 02/06/1979 |
| 4052139 | Method and apparatus for improving the energy yield of a reaction Method and apparatus to improve the energy yield of a reaction, particularly a combustion process. When used in a heating system in which fuel is burned, a burner sprays fuel and combustion supporting gas, preferably air, into the reaction zone inside a c... | 10/04/1977 |
| 3995535 | Expansible chamber device An expansible chamber device in which a cylinder of preferably rectangular configuration supports a pair of opposing flaps pivotally attached to the corners of the cylinder. The flaps sealably and slidably engage the top surface of a piston disposed withi... | 12/07/1976 |
| 3987776 | Combustion chamber structure for a spark ignition engine A spark ignition engine of the carburetor single chamber type stratified charge combustion system wherein air and rich mixture are supplied successively by the same path, comprising a barrier arranged in the combustion chamber for directing the intake gas... | 10/26/1976 |
