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| Number | Title | Issue Date |
| 7387103 | Internal combustion engine A high thermal efficiency lean-burn spark- ignition two or four stroke engine operable unthrottled suitable for vehicles using gasoline. It uses an indirect combustion chamber and a transfer orifice with or without shaping of the combustion chamber to produce a jet ... | 06/17/2008 |
| 7373956 | Passageway having non-linear flow path A tube for directing fluid along a path that includes a bend. The tube comprising a conduit having a first aperture, a second aperture, and a bend portion adjacent the second aperture. An outer bend surface is integrally formed as part of the conduit to at least par... | 05/20/2008 |
| 7370626 | High compression spark-ignition engine with throttle control, externally supplied ignition, and direct fuel injection into a precombustion chamber The invention relates to a spark-ignition engine with a highly structural compression ratio greater than 15:1, throttle regulation, externally supplied ignition and with direct fuel injection into a precombustion chamber, which is connected to the main combustion ch... | 05/13/2008 |
| 7318406 | Bowl-in-piston of a cylinder in a direct injection engine A piston in a direct injection spark ignition internal combustion engine is configured to reciprocate upward and downward within a combustion chamber along a reciprocating axis. The piston comprises an upper end which partly defines the combustion chamber; a bowl de... | 01/15/2008 |
| 7308996 | Gas combustion-type impact device An injection nozzle 21 for injecting a combustible gas into an annular combustion chamber 10 formed above a driving cylinder 4 is formed so as to face the interior of the combustion chamber 10, in which a rotary fan 24 for mixing a... | 12/18/2007 |
| 7290531 | Integrated fuel supply system for internal combustion engine An electronic fuel injection system is combined with a carburetor in a carbureted internal combustion engine. The resulting air/fuel induction system comprises a carburetor air/fuel induction system in combination with an electronic fuel injection system which uses ... | 11/06/2007 |
| 7152572 | Internal combustion engine A high thermal efficiency lean-burn spark-ignition two or four stroke engine operable unthrottled suitable for vehicles using gasoline. It uses an indirect combustion chamber and a transfer orifice aligned to produce a jet of air moving in helical swirl motion aroun... | 12/26/2006 |
| 7134281 | System and method for operating a compression-ignition engine A method of operating a compression-ignition engine includes adjusting timing of fuel injection if a sensed parameter indicative of a maximum pressure within a combustion chamber varies relative to a selected pressure and if fuel injection timing is greater than a p... | 11/14/2006 |
| 7131408 | Method and arrangement for controlling an internal combustion engine The invention is directed to a method and an arrangement for controlling an internal combustion engine (20) which achieve an optimal efficiency in different operating states. An opening time of an inlet valve (5) of a cylinder (1) of the engine ... | 11/07/2006 |
| 7096848 | Direct injection diesel engine A combustion chamber (20) opening toward a cylinder head (5) is provided on a top surface (11) of a piston (10), and this combustion chamber (20) comprises a first volume (22) having an inclined surface (20) and a sec... | 08/29/2006 |
| 7073478 | Internal combustion engine with auto-ignition In an internal combustion engine with auto-ignition in which the fuel is injected directly into the combustion chamber by means of a fuel injection nozzle in the form of multiple fuel jets, wetting of the combustion chamber-side cylinder head surface is minimized by... | 07/11/2006 |
| 7004140 | Piston structure of engine A piston structure of an engine generates an automatic flow of gas through a hole penetrating from a bowl of the piston toward a lateral side of the piston. The structure provides a reinforcement of the compression and swirling movement in the combustion chamber of ... | 02/28/2006 |
| 6910455 | Spark ignition engine with shallow bowl-in-piston geometry A piston for use with a direct injection, spark ignition engine includes a piston body with a top face having a piston deck and a shallow bowl. Furthermore, the shallow bowl has a maximum depth that is in the range of one to five millimeters below the piston deck. | 06/28/2005 |
| 6863045 | Combustion apparatus having improved airflow A gas combustion-powered apparatus has a first chamber, a rotatable fan in the first chamber, an ignition source in operable relationship to the first chamber to ignite a combustible gas, and a second chamber. A communication passage is located downstream of the fan... | 03/08/2005 |
| 6739308 | Fuel igniter and head for use in diesel engines and related systems and methods The present invention provides a piston for a diesel engine that reduces emissions generated during the combustion of fuel in a combustion chamber and a head that allows more air to flow into and out of the combustion chamber. The piston includes an igniter that ign... | 05/25/2004 |
| 6708667 | Combustion chamber structure of in-cylinder fuel injection type engine A combustion chamber arrangement for a direct fuel injected internal combustion engine wherein the combustion chamber is formed in part by a recess in the piston head. Fuel is injected into the combustion chamber so as to be introduced on one side of the recess with... | 03/23/2004 |
| 6612282 | Combustion chamber for DISI engine A direct-injection spark-ignited engine is provided that includes a combustion chamber formed between a lower surface of a cylinder head and an upper surface of a piston. An intake and an exhaust valve are respectively disposed in an intake port and an ex... | 09/02/2003 |
| 6003487 | Internal combustion engine An internal combustion engine comprises one or more pairs of first and second cylinders, the first cylinder having a larger swept volume than the second cylinder and respective first and second pistons reciprocable in the cylinders. The second piston has ... | 12/21/1999 |
| 5819700 | Combustion chamber structure for an internal combustion engine To accelerate a combustion within an entire combustion chamber including the vicinity of an opening portion for air suction to thereby make uniform a flame propagation in a combustion chamber structure for an internal combustion engine, and to provide a t... | 10/13/1998 |
| 5806482 | In-cylinder injection internal combustion engine This invention relates to an in-cylinder injection internal combustion engine. A lower wall of a cylinder head, said lower wall defining an upper wall of a combustion chamber, is configured in the form of a pentroof composed of an intake-valve-side, tilte... | 09/15/1998 |
| 5727519 | Low evaporativity fuel diesel engine A diesel engine using a low evaporativity fuel, and improves the fluidity of the air and fuel by injecting the fuel into a cylinder at the beginning of a compression stroke forming a uniform gaseous mixture, whereby the generation of NOx is min... | 03/17/1998 |
| 5711269 | In-cylinder injection internal combustion engine This invention relates to an in-cylinder injection internal combustion engine. A recessed portion (22A) is arranged in a top wall of a piston (22) to promote formation of a vertical swirl so that a flow of inducted air introduced into a combustion chamber... | 01/27/1998 |
| 5515823 | Engine with precombustion chambers In this engine with precombustion chambers, precombustion chambers are formed in pistons, and an air utilization rate in main combustion chambers formed in cylinders is improved, whereby the mixing of air with flames is promoted with a combustion period r... | 05/14/1996 |
| 5479888 | Divided chamber type diesel engine When viewing in parallel to a cylinder center axis (3), a combustion expanding gas injected from an injection hole (4) is adapted to form a pair of valve recesses (10), (11) located on the opposite sides of an injection axis (12) of the injection hole (4)... | 01/02/1996 |
| 5425337 | Pre-chamber type engine This pre-chamber type engine is provided with pre-chambers formed in the cavities in piston bodies, and head plates consisting of a material of a high thermal resistance the thermal expansion coefficient of which is substantially equal to that of the pist... | 06/20/1995 |
| 5417189 | High speed indirect injection diesel engine A diesel engine (10) has a pre-combustion chamber (30) with an angled and tapered transfer passage (60) leading to the main combustion chamber (44). The transfer passage (60) is tapered to provide a larger lower end (62) facing the main chamber (44) and s... | 05/23/1995 |
| 5392744 | Precombustion chamber for a double overhead camshaft internal combustion engine A diesel engine (10) has a precombustion chamber (30) with four circumferentially spaced and angled transfer passages (60, 61) leading to the main combustion chamber (44). Each transfer passage (60, 61) is tapered to provide a larger lower end (62) facing... | 02/28/1995 |
| 5218937 | Diesel engine A diesel engine includes a variable swirl forming mechanism, an exhaust gas recirculation (EGR) control mechanism, and an injection timing control mechanism. The variable swirl forming mechanism forms strong, middle or weak air swirls in a combustion cham... | 06/15/1993 |
| 5067457 | Swirl chamber type diesel engine A piston crown is formed with a cavity including a first flame deflecting member which is located amid three flame dispersion zones and which splits burning gases ejected from a transfer port into a first dispersion zone, while the piston is proximate its... | 11/26/1991 |
| 5031588 | Internal combustion engine utilizing stratified charge combustion process Internal combustion stratified-charge engine having within a cylinder thereof a variable volume space wherein a piston pursuant to an air intake stroke draws a stream of intake air through an entrance end of the combustion chamber and through such chamber... | 07/16/1991 |
| 5029563 | Combustion chamber assembly of direct injection diesel engines Combustion chamber assembly of direct injection diesel engine comprising a cylinder head, a cylinder liner, an injection nozzle and a piston with a combustion chamber on its top. An air flow guide ring is provided in the combustion chamber assembly. The g... | 07/09/1991 |
| 4995360 | Combustion chamber A swirl chamber is defined by an approximately spherical cavity formed in a cylinder head of an internal combustion engine with the radius of the swirl chamber being reduced in the direction the swirl flows in the swirl chamber. Therefore, the swirl is ac... | 02/26/1991 |
| 4913111 | Turbulence generator for two-stroker spark-assisted diesel engines A combustion chamber for a spark assisted diesel engine embodying a main combustion chamber and an energy cell. Fuel is injected into the main chamber and into the energy cell and combustion is initiated in the main chamber. The energy cell communicates w... | 04/03/1990 |
| 4872433 | Combustion chamber configurations for two cycle engines Improved combustion chamber configurations for two-cycle engines with high pressure fuel injected systems having reciprocal pistons, cylinders with multiple injectors for each cylinder and a cylinder head liner with a chamber having a discoidal configurat... | 10/10/1989 |
| 4799465 | Combustion chamber for internal combustion engines According to the present ivention, a combustion chamber of internal combustion engines comprises: a main combustion chamber which is created by recessing the piston top; a swirl chamber which is contiguous to said main combustion chamber via a passage; an... | 01/24/1989 |
| 4785776 | Diesel engine having shaped flame dispersing recess in piston crown A piston crown is formed with cavity a which includes a first flame deflecting member which divides the flame ejected from a transfer port interconnecting a swirl chamber with a main combustion chamber while the piston is relatively close to its TDC posit... | 11/22/1988 |
| 4784097 | Combustion chamber for internal combustion engine Disclosed herein is a combustion chamber for internal combustion engines using a volatile fuel of low certain number such as gasoline, alcohol or the like. The fuel is directly injected into communicating main and subsidiary combustion chambers which are ... | 11/15/1988 |
| 4784098 | Internal combustion engine utilizing stratified charge combustion process High-compression spark-ignited stratified-charge fuel-injection reciprocating-piston engine in which the combustion chamber initial charge includes a discrete air-fuel stratum that is lean with fuel at low speed idle and progressively increased in fuel ri... | 11/15/1988 |
| 4765293 | Hybrid internal combustion reciprocating engine A low compression reciprocating internal combustion piston engine with a prechamber in the head connected to a main combustion chamber in the piston, the prechamber having an igniter, a pilot fuel injector and connecting lineal passage; the main chamber i... | 08/23/1988 |
| 4762104 | Tj-jet chamber of gasoline engine A combustion chamber with a number of jet hole bores that communicate with the clearance space of the cylinder of an internal combustion engine. When the carburated mixture in the combustion chamber is ignited, the flame front bifurcates into a first port... | 08/09/1988 |
