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| Number | Title | Issue Date |
| 8025046 | System and method for facilitating homogeneous charge compression ignition A method of transitioning between homogeneous charge compression ignition and spark ignition in a combustion chamber of an engine that is configured for homogeneous charge compression ignition under at least some engine operating conditions and for spark ignition un... | 09/27/2011 |
| 7690368 | System and method for facilitating homogeneous charge compression ignition A method of transitioning between homogeneous charge compression ignition and spark ignition in a combustion chamber of an engine that is configured for homogeneous charge compression ignition under at least some engine operating conditions and for spark ignition un... | 04/06/2010 |
| 7677230 | Internal combustion engine with multiple spark plugs per cylinder and ion current sensing A system and method for operating a multiple cylinder internal combustion engine having at least two spark plugs per cylinder include selectively isolating all but one spark plug associated with the cylinder at least during an ionization current sensing period to re... | 03/16/2010 |
| 7665452 | First and second spark plugs for improved combustion control An engine system, comprising of a combustion chamber; a first spark plug configured to perform a spark within the combustion chamber, said first plug configured to have a first heat range; a second spark plug configured to produce a spark within the combustion chamb... | 02/23/2010 |
| 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 |
| 7140351 | Method and device for operating an internal combustion engine A method and a device for operating an internal combustion engine allow an optimal restriction of the ignition angle. In this context, a limit value for an ignition angle is specified as a function of an operating point of the internal combustion engine. The limit v... | 11/28/2006 |
| 6957139 | System for controlling drivetrain components to achieve fuel efficiency goals A system for controlling a vehicle drivetrain in a fuel-efficient manner includes a control computer operable to define a contour from substantially zero engine load to substantially full engine load, wherein the contour may correspond to a fuel-efficient path from ... | 10/18/2005 |
| 6944532 | System for controlling an internal combustion engine in a fuel efficient manner A system for controlling an engine in a fuel efficient manner includes a memory having stored therein an engine output characteristics map bounded by a maximum engine output curve. The map defines a region of undesirable operation having a first border defined as a ... | 09/13/2005 |
| 6837229 | Ignition device for internal combustion engine The ignition device for an internal combustion engine includes two spark plugs provided for each cylinder, ignition coils arranged independently to each of the spark plugs, an ignition power source circuit for supplying electrical energy to first coils which constit... | 01/04/2005 |
| 6814065 | Control apparatus for staggered spark plug firing in a dual-plug spark ignition engine Staggered firing of first and second spark plugs in a dual-plug spark ignition engine is achieved by apparatus that fires the first spark plug based on an output signal produced by an engine control module and firing the second plug based on the output of a delay co... | 11/09/2004 |
| 6763806 | Combustion control apparatus and combustion control method of internal combustion engine A combustion state during the initial stage after ignition is detected, and based on the detected combustion state, it is judged whether or not incomplete combustion has occurred, and when it is judged that incomplete combustion has occurred, an ignition signal is o... | 07/20/2004 |
| 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 |
| 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 |
| 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 |
| 6397827 | Spark ignition device for direct injection-type engines An ignition device sets a total discharge period, each discharge period and each intermittent period of a multiple discharge are set by a control map in addition to the setting of a throttle opening, fuel injection timing, fuel injection period and igniti... | 06/04/2002 |
| 5445122 | Ignition system for internal combustion engines with dual ignition An ignition system for internal combustion engines has two spark plugs per cylinder. The spark plugs are connected in a parallel circuit with the same end of an ignition coil.... | 08/29/1995 |
| 5269270 | Four-stroke cycle internal-combustion engine A four-stroke cycle internal-combustion engine having two large- and small-diameter intake valves and two large- and small-diameter exhaust valves in one cylinder and mounted with a valve-operating mechanism on either of the intake valve side and the exha... | 12/14/1993 |
| 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 |
| 5259357 | Ignition system for internal combustion engine An ignition system for an internal combustion engine that has at least two spark plugs for each of the cylinders. The number of spark plugs ignited is controlled in accordance with the operational condition of the engine. The system includes an ignition c... | 11/09/1993 |
| 5146905 | Capacitor discharge ignition system with double output coil A capacitor discharge ignition system (10) for an internal combustion engine has an ignition coil (22) with a magnetically permeable core (24) having an axially extending core bar (26), a primary winding (30) wound around the core bar, and a pair of secon... | 09/15/1992 |
| 5003945 | Dual spark plug ignition system for motorcycle internal combustion engine An ignition system for a motorcycle two cylinder internal combustion engine includes magnetically coupled primary and secondary coils, two spark plugs at each of the cylinders, a source of electrical current, contacts controlling electrical current flow t... | 04/02/1991 |
| 4958616 | Multiple-spark ignition system for internal combustion engines, particularly for motor vehicles The spark plugs (1a, 1b; 2a, 2b; 3a, 3b; 4a, 4b) associated with each cylinder (1, 2, 3, 4) are supplied by respective ignition coils (21, 22, 23, 24) preferably mounted on the plugs themselves.... | 09/25/1990 |
| 4953519 | Dual contact ignition system for motocycle internal combustion engine An ignition system for a motorcyle two cylinder internal combustion engine includes magnetically coupled primary and secondary coils, spark plugs at the cylinders, a source of electrical current, and first and second pairs of contacts respectively control... | 09/04/1990 |
| 4920944 | Ignition device for an internal combustion engine with two spark plugs per cylinder The device comprises a control center arranged to control a first and second ignition coil and to operate the engine under double ignition during normal use and under single ignition during full induction; in this latter case, ignition by the spark plugs ... | 05/01/1990 |
| 4608536 | Ignition performance measuring circuit The Ignition Performance Measuring Circut is intended for use with dual ignition systems, such as the dual-magneto ignition systems used on light aircraft. The circuit has a first and second channel. The first channel is dedicated to measuring the relativ... | 08/26/1986 |
| 4548174 | Dual plug ignition system An ignition system for an internal combustion engine has an ignition coil coupled to a first and second spark plug provided for each cylinder. A first diode is coupled in series between the first spark plug and the ignition coil. A second diode is coupled... | 10/22/1985 |
| 4538568 | Two-stroke cycle multispark ignition type gasoline engine An internal combustion engine of the spark ignition type developing a maximum output power at about 8000 rpm includes at least two ignition plugs for each cylinder and projections formed on the inner wall surface of a cylinder head for producing a squishy... | 09/03/1985 |
| 4517952 | Twin ignition plug control system for an internal combustion engine A twin ignition plug control system for an internal combustion engine by which two point ignition is switched to one-point ignition only when engine load is heavy and the engine is not being warmed-up. Since the control system according to the present inv... | 05/21/1985 |
| 4499872 | Ultra lean burn carburetted adiabatic engine An improved carburetted internal combustion engine (10) which operates with an extremely lean mixture, without a conventional cooling system, and at an elevated temperature characteristic of an adiabatic engine. The engine uses two ignition sources (20, 2... | 02/19/1985 |
| 4470392 | Multi-gap spark ignition device for engine A multi-gap spark ignition device to be installed in a spark ignition engine, is disclosed. The device comprises a metallic base member provided with a hole which forms one portion of the combustion chamber of the engine. Within the wall defining the hole... | 09/11/1984 |
| 4459804 | Multiple spark ignition internal combustion engine with exhaust gas recirculation A spark-ignition internal combustion engine with multiple plugs is operated at an air-fuel ratio around the stoichometric under a high EGR rate higher than EGR limits for stable operation in a single spark plug ignition engine.... | 07/17/1984 |
| 4452198 | Compact dual spark internal combustion engine A compact dual ignition push rod actuated overhead valve internal combustion engine having in a preferred embodiment a 4 cylinder V-type arrangement of 60° bank angle provided with part-spherical combustion chambers having diagonally placed intake and ex... | 06/05/1984 |
| 4432315 | Ignition arrangement for internal combustion engine An improved ignition arrangement for internal combustion engines includes, besides an ignition plug normally employed, another ignition plug provided on a guide surface confronting an exhaust port side of a guide wall for prevention of knocking by properl... | 02/21/1984 |
| 4407259 | Plasma ignition system for an internal combustion engine A plasma ignition system having a plurality of plasma ignition plugs eliminates a mechanical distributor for sequentially distributing plasma ignition energy into each plasma ignition plug. The plasma ignition system comprises: (a) a high DC voltage surge... | 10/04/1983 |
| 4350129 | Spark-ignition internal combustion engine capable of preventing noxious gas emissions An engine is provided with two spark plugs in each combustion chamber to ignite stoichiometric air-fuel mixture mixed with a large proportion of inert gases to lower NOx emission level. The engine is equipped with hydraulic valve lifters which are mechani... | 09/21/1982 |
| 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 |
| 4287862 | Otto-cycle internal combustion engine In the ignition system of the internal combustion engine, a preignition control circuit is further provided. The preignition control circuit includes a high voltage generator which supplies a high voltage to the spark plug to produce a preignition spark b... | 09/08/1981 |
| 4285323 | Transistorized ignition apparatus for driving ignition coils in an internal combustion engine A transistorized ignition apparatus for driving plural ignition coils of an internal combustion engine comprising two power transistor circuits, each having a power transistor, and a pick-up coil for generating an ignition timing signal synchronized with ... | 08/25/1981 |
| 4243005 | Ignition system in dual spark plug ignition engine with EGR system A dual spark plug ignition engine with an EGR system is provided with an ignition system which is arranged to achieve single spark plug ignition by sensing a considerably low intake vacuum which represents high power output engine operating range. The eng... | 01/06/1981 |
| 4201173 | Ignition apparatus for multi-cylinder reciprocating internal combustion engine An ignition apparatus for a multi-cylinder reciprocating internal combustion engine has a plurality of spark plugs arranged in each of the cylinders with each spark plug having a high voltage generating circuit. The ignition apparatus comprises an ignitio... | 05/06/1980 |
