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| Number | Title | Issue Date |
| 8176893 | Engine combustion control using ion sense feedback A system and method for operating an engine having at least two spark plugs per cylinder include controlling at least one actuator to alter combustion within a selected cylinder such that the combustion burn rate determined by ion sense current signals associated wi... | 05/15/2012 |
| 7475669 | Ignition control apparatus for an engine An ignition control apparatus for an engine; in particular, an engine having two or more igniter plugs per cylinder energized by a electric power source, comprises a voltage detector for detecting a voltage of the electric power source, and a controller configured t... | 01/13/2009 |
| 7467616 | Internal combustion engine An internal combustion engine 10 has a cylinder head 11 slideably supporting one or more poppet valves 30. At least a portion of one of the poppet valves 30 in each combustion chamber of the engine 10 forms in combination with one ... | 12/23/2008 |
| 7448356 | Multipoint ignition device A plurality of electrode pairs (P1 to P8) are caused to project from a side wall of a combustion chamber (2) of an engine, and a distance between ignition gaps (G1 to G8) and the side wall of the combustion chamber (2) is va... | 11/11/2008 |
| 7444981 | Internal-combustion engine and method of disposing ignition plug thereof An internal-combustion engine is disclosed in which a pair of inlet valves and a pair of outlet valves are provided within the combustion chamber formed in each of a row of cylinders. A first ignition plug is disposed in the cylinder head within a central area of th... | 11/04/2008 |
| 7441539 | Multipoint ignition device Respective heat values of a plurality of electrode pairs P1 to P8 are set individually such that the temperatures of all of the plurality of electrode pairs (P1 to P8) are kept within an appropriate temperature range in which a temperatur... | 10/28/2008 |
| 7441526 | Multipoint ignition device A multipoint ignition device comprises: a head gasket (1) interposed between a cylinder head and a cylinder block of an engine, having an opening (3) in a position corresponding to a cylinder opening portion; and a plurality of intermediate members ( | 10/28/2008 |
| 7441540 | Multipoint ignition device A multipoint ignition device comprises: a head gasket (1) interposed between a cylinder head and a cylinder block of an engine, having an opening (3) in a position corresponding to a cylinder opening portion; and a plurality of intermediate members ( | 10/28/2008 |
| 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 |
| 7360512 | Low-thermal-inertia intake ports for port-injected, spark ignition engines and an associated manufacturing method The present invention provides an intake port design that provides a low thermal inertia characteristic, thereby decoupling the surface temperature of the intake port walls from that of the coolant through use of an air gap formed between the intake port and the cyl... | 04/22/2008 |
| 7299785 | Embedded igniter system for internal combustion engines An embedded igniter for internal combustion engines consisting of a multiple ignition system with separate control for individual pairs of igniters that has been designed to replaces the spark plugs of internal combustion engines. This device allows for a more compl... | 11/27/2007 |
| 7278382 | Water-cooled two-cycle engine A cooling structure of a water-cooled two-cycle parallel multicylinder engine includes: an exhaust port in a cylinder block; an air intake port disposed in a crankcase below the exhaust port; a water pump disposed in the crankcase in an opposite side of the exhaust ... | 10/09/2007 |
| 7240648 | Radial engine A four-stroke radial engine comprises cylinders arranged radially with respect to a driving shaft of said radial engine and pistons associated with said cylinders, said pistons being connected to said driving shaft by means of respective connecting rods which are ro... | 07/10/2007 |
| 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 |
| 7207312 | Internal combustion engine An internal combustion engine that includes a cylinder block formed with a cylinder bore, a cylinder head operatively connected to the cylinder block; a piston slidably disposed in the cylinder bore to define a combustion chamber; an engine front side squish area an... | 04/24/2007 |
| 7165528 | Two-valve high squish flow I.C. engine An improved ignition-engine system for internal combustion engines comprising a compact combustion chamber in the cylinder head and two main squish zones (101a, 101b) for producing high flow and turbulence, and at least one minor squish z... | 01/23/2007 |
| 7063079 | Device for reducing the part count and package size of an in-cylinder ionization detection system by integrating the ionization detection circuit and ignition coil driver into a single package Two embodiments of an integrated ionization detection circuit and ignition coil driver, an ASIC and a single electronic package, are disclosed. The apparatuses reduce the cost and complexity of an in-cylinder ionization detection system by combining like functionali... | 06/20/2006 |
| 7004120 | Opposed piston engine A four-stroke opposed piston engine includes a rotating cylinder with a circumference and an aperture defined through the circumference, first and second opposing pistons, optional first and second opposing cylindrical spacers, first and second opposing piston caps,... | 02/28/2006 |
| 7004124 | Valve strategy for operating a controlled auto-ignition four-stroke internal combustion engine Low load operating point for a controlled auto-ignition four-stroke internal combustion engine is reduced without compromising combustion stability through a valve control operative to establish sub-atmospheric pressure conditions within the combustion chamber into ... | 02/28/2006 |
| 6968678 | High efficiency, reduced emissions internal combustion engine system, especially suitable for gaseous fuels Internal combustion (“IC”) engine system for high fuel conversion efficiency and low exhaust emissions, particularly although not exclusively with gaseous fuels. An IC engine operates at approximately stoichiometric (λ=1) air/fuel mass ratios. A higher-than-nor... | 11/29/2005 |
| 6959687 | SOHC type engine An SOHC-type engine in which first and second insertion/removal guide sections for guiding the insertion and removal of first and second spark plugs, respectively, are provided on a cylinder head including an intake valve and the first spark plug disposed therein an... | 11/01/2005 |
| 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 |
| 6918372 | Intake system of internal combustion engine An internal combustion engine includes an intake port leading to an engine cylinder. The intake port is divided into first and second passage section by a partition extending in the intake port in a longitudinal direction of the intake port. A gas motion control val... | 07/19/2005 |
| 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 |
| 6907857 | Fuel supply and injection system and method for controlling the same A fuel supply and injection system includes a fuel tank, a single electric pump unit, a plurality of fuel injection valves and a piping arrangement. The pump unit is provided in the fuel tank and includes an inlet for taking the fuel in the fuel tank and an outlet f... | 06/21/2005 |
| 6895925 | Internal combustion engine having three valves per cylinder A valve train is disclosed for an internal combustion engine having a block, a camshaft in the block, and at least two push rods actuated by the camshaft. The valve train comprises first and second rockers, and three valves. The first rocker is actuated by one of th... | 05/24/2005 |
| 6748917 | Direct injection spark ignition engine In internal combustion engines having direct injection, an injector injects fuel into the combustion chamber to form an ignitable fuel/air mixture with combustion air supplied separately, the mixture being ignitable by a spark plug. The fuel is injected in a conical... | 06/15/2004 |
| 6742495 | Engine control apparatus The invention comprises at least two independent intake ports 14a, 14b connected to a combustion chamber 15, two intake valves 12a, 12b, and two exhaust valves 13a, 13b. Upper... | 06/01/2004 |
| 6615796 | Multi-cylinder engine In multi-cylinder engine in which an intake valve and a first spark plug arranged side by side along an axis of a camshaft and an exhaust valve and a second spark plug arranged side by side along the axis of the camshaft are disposed in a cylinder head fo... | 09/09/2003 |
| 6559647 | Diagnosing spark plugs malfunction in a dual plug engine The present invention related generally to a method for determining spark plug malfunction and more particularly to a method for determining spark plug malfunction in an internal combustion engine in which at least two spark plugs are disposed in each cyl... | 05/06/2003 |
| 6536406 | Ignition system for internal combustion engine An ignition system for an internal combustion engine. At least one of a plurality of spark plugs 4 and 5 attached to each of cylinders 2A, 2B, 3B, and 3A is a self-cleaning spark plug A.... | 03/25/2003 |
| 6499460 | Ignition timing control device for internal combustion engine An engine operating region in which two ignition plugs ignite at different ignition timings is restricted to a region (phase-difference ignition region) where the effect of different ignition timings is remarkably achieved. In the operating region other t... | 12/31/2002 |
| 6499456 | Cylinder injection engine and control apparatus and method thereof A cylinder injection engine includes a fuel injector for injecting a fuel into a combustion chamber formed between a cylinder head and a piston, an intake port opening to the combustion chamber, an intake valve disposed in the intake port, a plurality of ... | 12/31/2002 |
| 6289868 | Plasma ignition for direct injected internal combustion engines An apparatus and method for the creation, placement and control of an area of electrical ionization within an internal combustion engine combustion chamber. This area of electrical ionization is positioned so that all of the fuel being injected into the c... | 09/18/2001 |
| 6161520 | Multiple spark ignition gasket A gasket of non-conductive material formed of layers of a ceramic between which is embedded a wire circuit for connecting spark electrodes, high voltage connectors and ground connectors of a spark ignition system. The wire circuit includes small diameter ... | 12/19/2000 |
| 6148775 | Orbital internal combustion engine An orbital internal combustion engine including a pair of rigidly interconnected opposed cylinders having a pair of rigidly interconnected pistons reciprocally mounted therein with the pistons each including a rigid piston rod rotatably journaled to a cra... | 11/21/2000 |
| 6112718 | Pressure regulator A pressure regulator for use with a low pressure fuel pump comprises a pressure relief valve connected between the inlet and outlet of the pump to permit fuel flow from the outlet to the inlet upon the pressure difference therebetween exceeding a predeter... | 09/05/2000 |
| 5954024 | Method for ignition control in combustion engines This invention relates to a method applied in combustion engines having two spark plugs in each combustion chamber for controlling ignition and ionization current measurements, one of the spark plugs acting as a sensor for the ionization current measureme... | 09/21/1999 |
| 5894826 | Combustion chamber for direct injection of fuel into exhaust recirculation rich mixture An internal combustion engine defining a combustion chamber for the direct injection of fuel through a centrally located fuel injector and having a first inlet passage and port for directing hot exhaust gases of a recirculation medium to a central region ... | 04/20/1999 |
| 5893348 | Combustion chamber system having an improved valve arrangement An intake and exhaust system for use with internal combustion engines that uses two intake valves and one exhaust valve for each engine cylinder. The three valves are preferably circular and spaced around the cylinder centerline in said cylinder head. One... | 04/13/1999 |
