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| Number | Title | Issue Date |
| 8091537 | Apparatus and method for engine head An apparatus and method for improving performance in an internal combustion engine includes texturing on an inner surface of at least a portion of an engine head. The texturing may include elongated raised portions extending in one or more directions that may aid in... | 01/10/2012 |
| 8082908 | 2-valve, 2-plug, 2-intake lean burn engine with squish flow with about 2/3 the combustion chamber under the exhaust valve An ignition-engine system for internal combustion engines having two-valves per cylinder (100) with a larger intake valve (103) and a smaller exhaust valve (104) in a longitudinal layout with a single camshaft (118) operating bucketed val... | 12/27/2011 |
| 7810479 | Pistons An improved internal combustion engine is provided with at least one channel or groove on its compression face. The at least one channel or groove can be open and of uniform width. The channel or groove can direct flow of an air-fuel mixture to increase combustion e... | 10/12/2010 |
| 7681564 | Vehicle piston internal combustion engine comprising an adapted recess An internal combustion engine has at least one cylinder, wherein in the cylinder there is a piston, which has a recess. Furthermore, the internal combustion engine has a cylinder head, which has the shape of a roof complementary to the roof-shaped geometry of the pi... | 03/23/2010 |
| 7415963 | Method for operating an internal combustion engine The invention relates to a direct-injection internal combustion engine that is operated in a first operating range associated with the low part load, with largely homogeneous combustion of the mixture and subsequent injection. Said internal combustion engine is oper... | 08/26/2008 |
| 7383831 | Combustion engine chamber A structure of a chamber in a combustion engine includes a ring-groove portion formed on the piston, a squish-area making portion formed on a top surface of the piston for a squish-area, an outer edge portion formed around the top surface excepting the squish-area m... | 06/10/2008 |
| 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 |
| 7357117 | Structured combustion chamber for use in engine A structured combustion chamber for an engine has a cylinder head with an intake hole portion communicating between an intake port and a combustion chamber and an exhaust hole portion which makes a communication between an exhaust port and the combustion chamber, an... | 04/15/2008 |
| 7353797 | Combustion chamber for internal combustion engine A geometry for an IC combustion chamber is disclosed that increases the air-fuel mixing efficiency within the chamber. The piston head includes a squish surface portion for generating a squish jet, and a bowl portion that cooperatively with the cylinder head defines... | 04/08/2008 |
| 7347181 | Direct injection spark ignition engine A direct injection spark ignition engine comprises a cylinder, a piston, a fuel injector arranged at one side of a center axis of the cylinder for directly injecting fuel into the combustion chamber, and a smoothly continuous lowered recess formed on a top surface o... | 03/25/2008 |
| 7341053 | Combustion chamber structure of an internal combustion engine A squish surface having the shape of a plane surface orthogonal to the axis of a piston is formed on the intake side of the piston top surface. A squish area is formed between the squish surface and a plane surface-shaped squish surface on the cylinder head side, an... | 03/11/2008 |
| 7258093 | Concave combustion chamber An internal combustion engine is provided with a roughly concave cylinder head, wherein a ridge descends into the combustion chamber. A first wall is formed from the ridge to a cylinder periphery to form a seat for an air intake valve. A second wall is formed from t... | 08/21/2007 |
| 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 |
| 7011062 | Engine starting apparatus To attain downsizing and weight reduction of a starter motor and starting power transmission in an engine starting apparatus. The starting power transmission decelerates rotation power of the starter motor and transmits the power to a crankshaft, even in a multi-cyl... | 03/14/2006 |
| 6971379 | Combustion chamber structure in an internal combustion engine There is provided a combustion chamber structure in an internal combustion engine in which, at a peripheral portion of a combustion chamber, a gap between a cylinder head lower face and a piston upper face is small in intake-to-intake and exhaust-to-exhaust zones an... | 12/06/2005 |
| 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 |
| 6874489 | Combustion chamber structure for internal combustion engine There are provided on an upper surface of a piston 13 which confronts to a combustion chamber two first squish areas A1 each containing a flat surface 13a extending along an outer circumferential portion the piston 13 in an arc-lik... | 04/05/2005 |
| 6832589 | Cylinder assembly for an aircraft engine An internal combustion aircraft engine comprising a cylinder head having a cylindrical head bore formed therein, a piston, and spark plugs, the cylinder head bore and piston designed to reduce engine knock. The cylinder head is fixedly attached to a top end of a cyl... | 12/21/2004 |
| 6820587 | Method for controlling a combustion process in a combustion engine Process which, by spray-controlled, directly injected combustion with the aid of step-by-step technical development of the whole of the combustion system, achieves an intensified mixing process during injection and after-burning, which speeds up soot oxidation durin... | 11/23/2004 |
| 6701883 | Cylinder head for use on a spark-ignition internal combustion engine and such spark-ignition internal combustion engine A cylinder head and a four-stroke and two-valve spark-ignition internal combustion engine spark-ignition internal combustion engine are provided which allows for enhancing the output and the rotational speed of the engine by increasing the flame propagati... | 03/09/2004 |
| 6651611 | Combustion chamber for swirl flow two valve spark ignition direct injection engine A combustion chamber for a swirl flow two valve spark ignition direct injection engine includes a cylinder with a closed end having a wedge shaped combustion chamber recess. A fuel injector extends through the closed end near a shallow side of the wedge r... | 11/25/2003 |
| 6647950 | Fuel-injected internal combustion engine with reduced squish factor A direct fuel injection internal combustion engine configured to reduce engine knock during high speed operation of the engine is provided. The engine comprises a cylinder head including a lower surface portion closing an upper end of a cylinder to define... | 11/18/2003 |
| 6588396 | Spark ignition direct injection engine with oval fuel spray into oblong piston bowl The present invention provides a fuel injector mounted on a side of a combustion chamber and delivers an ovalized fuel spray toward an oblong piston bowl of the chamber. The ovality of the spray is selected in relation to the oblong piston bowl and the mo... | 07/08/2003 |
| 6494178 | Combustion chamber including piston for a spark-ignition, direct-injection combustion system An engine combustion chamber includes a cylinder head, a cylinder wall and a piston. The piston has a bowl volume formed therein. A fuel injector is disposed adjacent one edge of the bowl and an ignition source is within a predetermined distance of anothe... | 12/17/2002 |
| 6435159 | Fuel injected internal combustion engine with reduced squish factor A direct fuel injection internal combustion engine configured to reduce engine knock during high speed operation of the engine is provided. The engine comprises a cylinder head including a lower surface portion closing an upper end of a cylinder to define... | 08/20/2002 |
| 6401702 | Controlled two-stroke internal combustion engine A combustion chamber in a reciprocating-piston internal combustion engine having at least one inlet duct and at least one outlet duct is formed by a cylinder head and piston each having respective annular squish surfaces for acceleration of fresh gases. A... | 06/11/2002 |
| 6382176 | Method for injecting and combusting fuel with a piston head having a top surface recess A method of controlling fuel injection flow in a cylinder of an internal combustion engine. A piston head of the engine is provided with a combined flow redirector and holding bowl recess extending into a top side of the piston head. A fuel injection port... | 05/07/2002 |
| 6267107 | Squishinduced turbulence generating colliding flow coupled spark discharge in an IC engine An improved ignition-combustion system for internal combustion engines comprising a compact combustion chamber zone (4) in the engine cylinder head (6) mainly under the exhaust valve (8) and with large air-squish zones (124a, 124b) formed at the edge of t... | 07/31/2001 |
| 6237579 | Design to improve turbulence in combustion chambers A combustion chamber design layout of grooves or channels or passages formed in the squish band to further enhance turbulence in the charge prior to ignition as compared to existing designs with squish bands or hemispherical layouts in I.C. Engines. These... | 05/29/2001 |
| 6220215 | Combustion chamber structure in an internal combustion engine In an internal combustion engine a spark plug is disposed at a nearly central position of a combustion chamber formed between the underside of a cylinder head and a crown of a piston. Intake valves are disposed on one side of the cylinder head, while exha... | 04/24/2001 |
| 6199544 | Combustion chamber system having an improved configuration with squish areas An intake and exhaust system for use with internal combustion engines that uses two intake valves and one exhaust valve for each engine. The three valves are preferably circular and spaced around the cylinder centerline in said cylinder head. One or more ... | 03/13/2001 |
| 6170455 | Internal combustion engine An internal combustion engine with a piston arranged in a cylinder bore, a pair of intake passages to the cylinder bore, and having a piston crown provided with a crescent-shaped depression. The inlet passages are arranged symmetrically with respect to an... | 01/09/2001 |
| 6152122 | Combustion enhancing insert for cylinder of an internal combustion engine A combustion enhancing insert for a cylinder of an internal combustion engine having a body shaped for insertion into the cylinder so as to partially occupy the squish area of the cylinder as well as the crevice area of the cylinder. The combustion enhanc... | 11/28/2000 |
| 6047592 | 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 two longitudinal guiding ribs located at a distance from each ot... | 04/11/2000 |
| 6019079 | Piston for internal combustion engines The object of the present invention is to concentrate the intake air flowing into a combustion chamber of an internal combustion engine near the ignition point of a spark plug, and to form a strong swirl effect in this area. A projection 16 is formed on a... | 02/01/2000 |
| 5996548 | Method of operating an internal combustion engine The invention relates to a method of operating an internal combustion engine and to an internal combustion engine respectively. In accordance with the method of operating an internal combustion engine in accordance with the invention fuel is injected into... | 12/07/1999 |
| 5934262 | Combustion chamber for internal combustion engine A combustion chamber in a reciprocating-piston internal combustion engine having at least one inlet duct and at least one outlet duct is formed by a cylinder head and piston each having respective annular squish surfaces for acceleration of fresh gases. A... | 08/10/1999 |
| 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 |
| 5771872 | Combustion chamber of an internal combustion engine A combustion chamber of an internal combustion engine is disclosed. The combustion chamber comprises an approximately triangular upper wall in at least one vertical section passing through the center of the combustion chamber, a squish area formed by a pe... | 06/30/1998 |
