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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7434564 | Internal combustion engine A cylinder head for an internal combustion engine wherein intake openings to the cylinder are partly surrounded by a mask formed by a material projection of the top face of the combustion chamber, a contour of the mask having a flat main section of maximum height be... | 10/14/2008 |
| 6971365 | Auto-ignition gasoline engine combustion chamber and method A combustion chamber for an internal combustion engine includes a closed end cylinder having an axis. A piston is reciprocable in the cylinder and includes a generally flat rim having an inner edge surrounding a recessed bowl into which the fuel is primarily injecte... | 12/06/2005 |
| 6932069 | Air fuel ratio control apparatus for an internal combustion engine An air fuel ratio control apparatus for an internal combustion engine can improve learning accuracy in the air fuel ratio control even if the air fuel ratio of a mixture detected by an air fuel ratio detection device shifts from an actual air fuel ratio thereof. The... | 08/23/2005 |
| 6739309 | Direct fuel injection internal combustion engine A direct fuel injection internal combustion engine comprises a combustion chamber, a fuel injection valve and a spark plug. The combustion chamber has a piston including an outer cavity located in a top surface of the piston and an inner cavity located in the outer ... | 05/25/2004 |
| 6732702 | Combustion chamber A combustion chamber assembly for use in a diesel engine includes a combustion chamber defined in a crown of a piston, the combustion chamber having a center portion, the center portion being defined at least in part by a portion of a convex sphere, the sphere havin... | 05/11/2004 |
| 6725828 | Vortex-induced stratification combustion for direct injection spark ignition engines A system and method for controlling combustion in a direct injection spark ignition internal combustion engine inject fuel directly into a combustion chamber in a wide-angle, hollow-cone spray to form a vortex that draws fuel vapor out of the spray to form a combust... | 04/27/2004 |
| 6675767 | Internal-combustion engine with fuel injection device The present invention relates to a direct-injection internal-combustion engine comprising at least a cylinder (10), a cylinder head (12), a piston (22) sliding, in this cylinder, intake means (14, 18) for at least one gaseous fluid, a multijet fuel-inject... | 01/13/2004 |
| 6478006 | Working cycle for a heat engine, especially an internal combustion engine, and an internal combustion engine The present invention relates to a working cycle for a heat engine, especially of the reciprocating piston type, having a gas as working medium, including the steps of isentropic compression of the gas, isochoric addition of heat to the gas, isentropic ex... | 11/12/2002 |
| 6055954 | Spark ignition type internal combustion engine with sub-combustion chamber A spark ignition internal combustion engine includes a sub-combustion chamber in which gas mixture with an air-fuel ratio adapted for an operating state of the engine over a wide operating range of the engine is supplied to a combustion chamber. The amoun... | 05/02/2000 |
| 6055955 | Internal combustion engine An internal combustion engine, for motor vehicles having a direct fuel injection and externally supplied ignition, which has at least one combustion chamber enclosed between a cylinder head and a reciprocating piston displaceable in a cylinder bore, the c... | 05/02/2000 |
| 5915351 | Insulated precombustion chamber An insulated pre-combustion chamber of an internal combustion engine in which a piston is disposed in a cylinder for reciprocal movement relative to the cylinder. A cylinder head is provided over the cylinder and piston to form a main combustion chamber a... | 06/29/1999 |
| 5862789 | Applied ignition internal combustion engine whose pistons have elliptical recesses The present invention relates to an applied ignition internal combustion engine having at least one cylinder in which a piston slides along the cylinder axis, with a cylinder head capping the cylinder and, together with the piston and cylinder, defining a... | 01/26/1999 |
| 5237971 | Valve stem seal assembly A valve stem seal assembly for installation about a valve stem surrounded by a valve guide includes a sleeve-like elastomer body having the following four components: (1) an annular, outer, oil-sealing lip for sealingly surrounding the valve stem in the i... | 08/24/1993 |
| 5215052 | Internal-combustion engine with predominantly swirl-free air inflow into a shallow combustion space An internal-combustion engine has predominantly swirl-free air inflow into a shallow combustion space. A centrally arranged injection nozzle with preferably eight spray holes projects into the combustion space. The nozzle has a piston with a piston recess... | 06/01/1993 |
| 5109817 | Catalytic-compression timed ignition A catalytic prereaction timing ignition method and igniter unit for timed ignition of a fuel-air mixture in internal combustion engines providing an ignition chamber open into the combustion chamber of the engine, there being a catalytic igniter positione... | 05/05/1992 |
| 5105795 | Fuel injection system for engine Several embodiments of combustion chamber and fuel injection systems for internal combustion engines wherein the combustion chamber is formed by a dome shape recess having a steeply inclined wall and a more shallowly inclined wall. The walls intersect alo... | 04/21/1992 |
| 5105780 | Ignition assisting device for internal combustion engines A capsule, the interior volume of which is an ignition chamber, is provided with an engine to improve ignition. The capsule has an orifice so the ignition chamber can communicate with a main combustion chamber of the engine. Often, the capsule is connecte... | 04/21/1992 |
| 4953528 | Direct injection-type diesel engines A direct injection-type diesel engine includes a piston head formed with a novel piston combustion chamber, with an inner wall surface composed essentially of ceramic material having a low thermal conductivity. The combustion chamber has a reduced opening... | 09/04/1990 |
| 4887568 | Ceramic insert for defining precombustion chamber in cylinder head A cylinder head has an insert assembly defining a precombuation chamber in a cylinder head. The insert assembly includes a domed insert made of ceramics and cast into a cylinder head body. A fuel injection nozzle hole and a glow plug hole are formed so as... | 12/19/1989 |
| 4791903 | Fuel supply system for internal-combustion engine A fuel supply system for internal-combustion engine, with a fuel supply arrangement disposed at such a position that the relationship between the volume VCOM of a combustion chamber and the volume VIN of an intake-air passage between... | 12/20/1988 |
| 4635598 | Swirl chamber arrangement for diesel engine or the like In a pre-chamber type diesel engine, in order to prevent droplets of liquid fuel finding their way into zones of the main combustion chamber wherein they undergo slow combustion and thus tend to form smoke, a recess is formed at the main combustion chambe... | 01/13/1987 |
| 4511612 | Multiple-layer wall for a hollow body and method for manufacturing same A multiple-layer wall is provided for a hollow body to sustain high thermal and mechanical loads and to afford adequate thermal insulation. The wall has, on the inside, a heat and/or wear resistant ceramic inner layer and, surrounding it, a preferably pre... | 04/16/1985 |
| 4473046 | Direct injection type internal combustion engine A direct injection type internal combustion engine includes a centrifugal injector having its port facing a recess formed in a combustion chamber. The injector is arranged such that its axis of injection fails to intersect the central axis of the recess b... | 09/25/1984 |
| 4465032 | Precombustion chamber for internal combustion engine Internal combustion reciprocating-piston engine precombustion chamber in which a mass of air or air mixed with selective amounts of fuel and a spark-ignitable air-fuel mass are segregatively compressed with the latter mass enveloping spark electrodes prep... | 08/14/1984 |
| 4452221 | High squish dual swirl engine combustion chamber A high efficiency high ratio dual swirl combustion chamber of a spark ignition internal combustion engine includes in preferred embodiment opposing closely conforming squish surfaces with an eight (8) shaped subchamber recess formed of adjoining subcylind... | 06/05/1984 |
| 4393830 | Acoustic detonation suppression in a catalytic environment in internal combustion engine A screw-in device forming an acoustical resonance absorber cavity is connected in acoustical communication with a combustion chamber of an internal combustion engine. The absorber cavity has catalytic material therein. The absorber cavity operates to acou... | 07/19/1983 |
| 4366789 | Piston-type internal combustion engine A piston-type internal combustion engine is proposed which has externally-supplied ignition and in which fuel is injected, from the direction of the intake tube, past the opened inlet valve directed into a partial combustion chamber of disc-like embodimen... | 01/04/1983 |
| 4331115 | Internal combustion engine The invention relates to improvements in a four cycle valve-in-head internal combustion engine, the combustion chamber of which has at least one inlet and one outlet valve each of these valves having plate surfaces which are located at least substantially... | 05/25/1982 |
| 4294208 | Atomizing shock wave precombustor A precombustor 10 for use in diesel engines comprises a precombustion chamber 12, a fuel spray nozzle port 18 through which a fuel spray nozzle 20 may be incorporated into the precombustion chamber 12, an igniter port 22 for an ignition means adjacent to ... | 10/13/1981 |
| 4292935 | Low nitrous oxide (NOX) precombustor A geometrically optimized precombustion chamber 12 for a diesel or stratified charge engine is provided which limits the maximum gas temperature through transonic and/or supersonic flow to prevent the production of nitrous oxides and is defined in accorda... | 10/06/1981 |
| 4254750 | Internal combustion engine with an auxiliary combustion chamber Disclosed is an internal combustion engine comprising a main combustion chamber and an auxiliary combustion chamber interconnected by two connecting passages with each other. A raised portion having a flat lower end face is formed on the inner wall of the... | 03/10/1981 |
| 4232638 | Internal combustion engine equipped with an auxiliary combustion chamber An internal combustion engine comprising an auxiliary chamber connected to a main chamber via a connecting passage. A raised portion is formed on the inner wall of the auxiliary chamber. The auxiliary chamber is divided into a first chamber and a second c... | 11/11/1980 |
| 4221198 | Internal combustion engine with sustained power stroke A four stroke cycle internal combustion engine is presented having a sustained power stroke which results from a delayed mixing of a stratified charge. Use of delayed mixing of an overall stoichiometric air-fuel mixture results in formation of a low amoun... | 09/09/1980 |
| 4221190 | Combustion chamber for an internal combustion engine of direct injection type A combustion chamber for an internal combustion engine of the direct injection type defined by a cylinder head, a cylinder liner and a piston head, the piston head having formed therein a cavity in which air swirl can be produced by a known means. A fuel ... | 09/09/1980 |
| 4193382 | Stratified charge type combustion process for internal combustion engine and internal combustion engine utilizing same A combustion engine which may be either of the spark-ignition type or the compression-ignition type (Diesel engine) is so constructed that two separate charges having different compositions are injected into a combustion chamber during the intake stroke. ... | 03/18/1980 |
| 4177769 | Combustion chamber for an internal combustion engine of direct injection type A combustion chamber for an internal combustion engine of the direct injection type formed by a cylinder head, a cylinder liner and a piston head, the piston head having formed therein a cavity in which the air swirl can be produced by known device. A fue... | 12/11/1979 |
| 4176628 | Combustion chamber for an internal combustion engine of direct injection type A combustion chamber for an internal combustion engine of the direct injection type formed by a cylinder head, a cylinder liner and a piston head, the piston head having formed therein a cavity in which air swirl can be produced by a known device. Fuel in... | 12/04/1979 |
| 4167930 | Internal combustion engine with sustained power stroke A four stroke cycle internal combustion engine is presented having a sustained power stroke which results from a delayed mixing of a stratified charge. Use of delayed mixing of an overall stoichiometric air-fuel mixture results in formation of a low amoun... | 09/18/1979 |
| 4164913 | Combustion chamber for an internal combustion engine of direct injection type A combustion chamber for an internal combustion engine of the direct injection type formed by a cylinder head, a cylinder liner and a piston head, the piston head having formed therein a cavity in which the air swirl can be produced by known means. A fuel... | 08/21/1979 |
| 4149495 | Internal combustion engine with an auxiliary chamber Disclosed is an internal combustion engine with an auxiliary chamber which is connected to the main chamber via a connecting passage. The connecting passage is tangentially connected to the inner wall of the auxiliary chamber. A raised portion is formed o... | 04/17/1979 |
