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| Number | Title | Issue Date |
| 7997250 | Upper structure of engine Disclosed is an upper structure of an engine having three or more cylinders arranged in a row. A first one of a pair of adjacent cylinders among at least three of the cylinders serially arranged in a cylinder row direction is provided with a second spark plug at a p... | 08/16/2011 |
| 7584741 | Internal combustion engine with rotary valve An axial flow rotary valve for an engine, that is rotatable about an axis within the bore of a cylinder head. The valve communicating with a respective cylinder in which a piston reciprocates, and an ignition means associated with the cylinder. The valve is provided... | 09/08/2009 |
| 7234441 | Spark plug system in an internal combustion engine A spark plug system includes a center spark plug and a plurality of peripheral spark plugs, the spark plugs extending into a ridge-roof type combustion chamber of an internal combustion engine from the inner surface of a cylinder head and being disposed approximatel... | 06/26/2007 |
| 7188589 | Direct injection internal combustion engine In a direct injection internal combustion engine, a fuel injection valve and a spark plug of adjacent cylinders are inclined at different angles from each other in directions perpendicular to a cylinder arrangement direction in which the cylinders are arranged. Besi... | 03/13/2007 |
| 6935302 | In-cylinder injection type internal combustion engine An in-cylinder injection type internal combustion engine is provided, which first fires a first spark plug and thereafter fires a second spark plug when a required load is low and which first fires the second spark plug and thereafter fires the first spark plug when... | 08/30/2005 |
| 6799550 | Spark-ignition engine having direct fuel injection The invention relates to a spark-ignition engine having direct fuel injection, the fuel injector (2) and the spark plug (3) being arranged centrally on the upper side of the combustion chamber (1). The fuel injector produces an asymmetrical inje... | 10/05/2004 |
| 6705269 | Four-cycle engine To provide a four-cycle engine, in which a pair of intake valve ports is openable/closable by respective intake valves and a pair of exhaust valve ports is openable/closable by respective exhaust valves. The pair of intake valve ports and the pair of exhaust valve p... | 03/16/2004 |
| 6629519 | Injection nozzle and a method for forming a fuel-air mixture A cylinder head for an internal combustion engine includes a spark plug 3, provided in combustion chamber 2, and an injection nozzle 1 that has a housing end face 27 and a closure element 6 which is movable by an actuator and has a closure member 10, the ... | 10/07/2003 |
| 6173695 | Cylinder head with high swirl intake port and combustion chamber A cylinder head for a four-cycle internal combustion engine with improved intake port and combustion chamber configuration. The physical shape of the intake port and combustion chamber directs the flow of the incoming air/fuel mixture in a swirl path, whi... | 01/16/2001 |
| 6116199 | Mixture-compressing two-stroke spark ignition engine with fuel injection In order to provide a mixture-compressing two-stroke Otto engine with fuel injection into the cylinder space, in which it is in particular intended to make a homogeneous mixture formation possible, it is proposed that the combustion space (19) possesses e... | 09/12/2000 |
| 5927244 | Combustion chamber structure having piston cavity An internal combustion engine having a cylinder head body with a pentroof-shaped combustion chamber comprises a piston including a piston cavity and a caldera-shaped protrusion provided around the piston cavity, a fuel injector for injecting fuel downward... | 07/27/1999 |
| 5727520 | Four-stroke internal combustion engine with spark ignition In order to optimize combustion in a four-stroke spark-ignition engine with direct fuel injection, the conditions of charge flow are improved by providing the top surface of each piston with an essentially U-shaped guiding rib, which is open towards the e... | 03/17/1998 |
| 5517961 | Engine with flow coupled spark discharge An improved spark ignition engine system producing a large continuous, centrally directed, flow coupled ignition spark discharge through combustion chamber (1), piston (4), inlet system (28/29), spark plug (5), and ignition spark discharge (26) design, an... | 05/21/1996 |
| 5408968 | Engine and method for designing same Disclosed is an engine for an automotive vehicle designed such that a mixed gas supplied to the combustion is burned first in the periphery of the combustion chamber and then over the entire length in the peripheral direction of a cylinder, followed by bu... | 04/25/1995 |
| 5261367 | Engine and method for designing same Disclosed is an engine for an automotive vehicle designed such that a mixed gas supplied to the combustion is burned first in the periphery of the combustion chamber and then over the entire length in the peripheral direction of a cylinder, followed by bu... | 11/16/1993 |
| 5010860 | Internal combustion engine with twin combustion chambers An internal-combustion engine includes two combustion spaces for each cylinder. Each combustion space is separated from the cylinder space and has a valve to open and close a passage through which communication is established between the combustion space ... | 04/30/1991 |
| 4974559 | Combustion system and combustion apparatus for internal combustion engine A combustion apparatus and a combustion system for an internal combustion engine wherein a funnel-shaped cone with an orifice at the apex thereof is provided in a combustion chamber and spaced from an ignition apparatus so that as a gaseous, combustible m... | 12/04/1990 |
| 4964379 | Twin-piston two-stroke engine Two pistons in adjacently situated cylinders in a twin-piston two-stroke engine share a common combustion chamber. To ensure low exhaust gas emissions with low consumption, a lean mixture is burnt whereof the complete combustion is made possible by design... | 10/23/1990 |
| 4539950 | Four-stroke piston engine A four-stroke piston engine in which air or a fuel-air mixture is drawn into a cylinder. Fuel may be injected into the air in the cylinder while a further fuel supply is located on the axis of the cylinder and supplies at least one jet of fuel during the ... | 09/10/1985 |
| 4508073 | Combustion space of a piston driven internal combustion engine A reciprocating lens-like combustion space is formed in a piston internal combustion engine which is located with approximately one-half in a recess of the piston top and with approximately the other half in the cylinder head. By the dimensioning of the c... | 04/02/1985 |
| 4450796 | Four-stroke piston engine A four-stroke piston engine in which air or a fuel-air mixture is drawn into a cylinder. Fuel may be injected into the air flowing into or already present in the cylinder while a further fuel supply is located on the axis of the cylinder and supplies at l... | 05/29/1984 |
| 4324214 | Combustion chamber for an internal combustion engine An internal combustion engine comprises a combustion chamber located between a spherical-cup bottom wall of the engine head and a crown top wall of the piston. The crown wall includes of five wall portions, of which first and second side portions are conv... | 04/13/1982 |
| 4296720 | Combustion chamber of an internal combustion engine An internal combustion engine comprising a first raised portion formed on the inner wall of the cylinder head, a second raised portion formed on the top face of the piston at a position opposite to the first raised portion with respect to the axis of the ... | 10/27/1981 |
| 4291655 | Combustion chamber of an internal combustion engine Disclosed is an internal combustion engine comprising a cylinder head and a piston. A recess is formed on the inner wall of the cylinder head or on the top surface of the piston. The recess defines a combustion chamber when the piston reaches the top dead... | 09/29/1981 |
| 4280459 | Combustion chamber of an internal combustion engine An internal combustion engine comprises a first raised portion formed on the inner wall of the cylinder head, a second raised portion formed on the top face of the piston at a position opposite to the first raised portion with respect to the axis of the p... | 07/28/1981 |
| 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 |
| 4191136 | Combustion chamber of an internal combustion engine A combustion chamber of an internal combustion engine which includes a cylinder bore, a cylinder head with a combustion recess and a mating surface with a surface portion overhanging the bore whereby to form a squash portion between the overhanging portio... | 03/04/1980 |
| 4182280 | Vortex automotive combustion engine A spark ignition internal combustion engine is provided with a symmetric open torus combustion chamber at the end of a cylinder with a coaxial inlet for intake of fuel air mixture into the chamber and a coaxial outlet communicating with the upper end of a... | 01/08/1980 |
| 4178889 | Internal combustion engine An internal combustion engine has a combustion chamber which communicates via an injection port with an injection chamber whose volume is 0.5 cc~1.5 cc. During the intake stroke, air-fuel mixture is introduced from an intake port into the combustion chamb... | 12/18/1979 |
| 4167161 | Directional auxiliary intake injection for internal combustion engine An auxiliary charge of air, fuel mixture, and/or recycled exhaust gas is injected into the combustion chambers of an engine through directional ports adjacent the spark plug gaps to enhance combustion, reduce noxious emissions, scavenge exhaust gases, etc... | 09/11/1979 |
| 4133331 | Dual spark-plug ignition internal combustion engine with improved combustion chamber wall Two spark plugs are disposed in each combustion chamber of an internal combustion engine to ignite the air-fuel mixture mixed with a considerably large proportion of the exhaust gases. The wall surface of the combustion chamber is formed so that only one ... | 01/09/1979 |
| 4121544 | Internal combustion engine A spark plug ignited internal combustion engine in which each cylinder is provided with a turbulence chamber in which the exhaust valve is located. The cylinder head and the top of the piston cooperate during the compression stroke to define a guide chann... | 10/24/1978 |
| 4116176 | Dual spark plug ignition internal combustion engine having improved cylinder head configuration Intake and exhaust valves and an intake port of an internal combustion engine are arranged so that strong swirl turbulence of the inducted air-fuel mixture is produced in the combustion chamber. The swirl turbulence improves the combustion of the air-fuel... | 09/26/1978 |
| 4094272 | Externally ignited four cycle internal combustion engine An externally ignited four cycle internal combustion engine equipped with an inlet valve and an outlet valve. In one embodiment a swirl (turbulence or vortex) chamber is provided within the cylinder head, the height of the swirl chamber being less than it... | 06/13/1978 |
| 4061113 | Process for reducing the pollution due to an internal combustion engine, and an engine including the application of said process The process comprises producing in a combustion chamber of the engine a high-tension electrical discharge, prolonging the duration of the discharge, and supplying additional air in the vicinity of the discharge so as to form a plasma and cause a post-comb... | 12/06/1977 |
| 3938482 | Internal combustion engine with a plurality of exhaust valves An internal combustion engine comprising a first exhaust valve arranged in an exhaust port in the exhaust system of said internal combustion engine, and a second exhaust valve arranged in the exhaust port downstream from said first exhaust valve, the timi... | 02/17/1976 |
