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| Number | Title | Issue Date |
| 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 |
| 7322333 | Internal combustion engine air intake structure An air intake structure is provided with an air intake control valve disposed in the air intake passage. The air intake control valve has a valve element pivotally mounted at one end adjacent to a passage wall of the air intake passage. The air intake control valve ... | 01/29/2008 |
| 7322191 | Device for imparting a whirling motion on the flow of air for supplying a turbo-supercharged internal-combustion engine A device for imparting a whirling motion on the flow of air for supplying a turbo-supercharged internal-combustion engine is designed to be interposed in the duct for supplying the air upstream of the supercharger for supercharging the engine. The device comprises a... | 01/29/2008 |
| 7313918 | Alternative (reciprocating) engine with recirculation of exhaust gases intended for the propulsion of automobiles and method turbocharging these motors A reciprocating engine includes a turbocharging unit that: supplies the intake manifold with air via a coolant; is supplied with gas by the exhaust manifold; and has the turbine supply pressure substantially equal to the compressor discharge pressure. At constant ai... | 01/01/2008 |
| 7302934 | Saddle-straddling type motor vehicle An air-cooled engine is hung and fixed under a rear part of a backbone of a body frame. The engine is disposed so that the center axis of a cylinder in its cylinder block extends approximately horizontally and so that its cylinder head is directed toward the front. ... | 12/04/2007 |
| 7270109 | Internal combustion engine Enhanced combustibility by increasing the difference in intake gas velocity between a low flow velocity region and first and second high flow velocity regions in an intake port. An intake port of an internal combustion engine has an intake flow control port portion ... | 09/18/2007 |
| 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 |
| 7249585 | Swirl system intake manifold for an internal combustion engine An intake manifold with a swirl system for an internal combustion engine having a number of cylinders; the intake manifold has, for each cylinder, an intake conduit connecting the intake manifold to the cylinder and in turn having two parallel channels; the swirl sy... | 07/31/2007 |
| 7201142 | Variable center pivot tumble control valve geometry for an intake manifold A tumble control valve for an intake manifold of an engine which eliminates or substantially reduces air leakage between the bottom and sides of the valve blade through a selected rotational segment of the blade as it moves from the closed position toward the open p... | 04/10/2007 |
| 7156071 | Intake device for internal combustion engine An intake device includes an intake pipe, a valve having a downstream side including a cutoff portion and an upstream side rotatably attached to an inner wall of the intake pipe, and a partition plate provided in the intake pipe so as to divide an intake passage in ... | 01/02/2007 |
| 7137380 | Internal combustion engine with ignition plug and vehicle provided with the same An internal combustion engine includes a cylinder having a cylinder inner surface, a cylinder head that cooperates with the cylinder inner surface to define a combustion chamber and has a head inner surface including an intake opening through which an intake gas is ... | 11/21/2006 |
| 7134422 | Air intake structure for a vehicle, and vehicle including same In an air intake assembly, a portion of an inner peripheral wall of an intake funnel pipe is provided as a pivotally movable blocking body, so that when unthrottled, an inner wall surface of the blocking body is flush with the inner peripheral wall of the funnel pip... | 11/14/2006 |
| 7128050 | Air intake apparatus for internal combustion engine In an air intake apparatus for an engine, an intake port is connected to a cylinder of the engine and an intake valve opens and closes a downstream end of the intake port. The air intake apparatus includes a partition wall provided along a longitudinal direction of ... | 10/31/2006 |
| 7089909 | Choke valve provided with an integrated electromagnetic actuator for an intake manifold with a retracting tumble system A choke valve for an intake manifold with a retracting tumble system for an engine provided with a number of cylinders, the choke valve being adapted to vary the passage section of the air through an intake duct which connects each cylinder with the intake manifold ... | 08/15/2006 |
| 7086367 | Air flow arrangement for a reduced-emission single cylinder engine The present invention provides a reduced emission, single cylinder engine incorporating an air flow arrangement for improving flow efficiency of the intake air drawn into the engine and the exhaust discharged from the engine. ... | 08/08/2006 |
| 7077102 | Dual inlet port for internal combustion engine A system (10) and method for the induction of a fluid into the combustion chamber (15) of an internal combustion engine comprising a cylinder head (12) having at least one intake port (14) communicating with at least one combustion chambe... | 07/18/2006 |
| 7051702 | Intake apparatus for internal combustion engine An intake apparatus for an internal combustion engine, including a partition extending in a longitudinal direction of an intake port so as to divide an inside region of the intake port into a first passage and a second passage, and a gas motion control valve dispose... | 05/30/2006 |
| 7047934 | Fuel injection type internal combustion engine and vehicle provided with the same An internal combustion engine includes an engine body including a cylinder that defines a combustion chamber, an intake opening that faces the combustion chamber, and an intake passage in communication with the combustion chamber through the intake opening, a piston... | 05/23/2006 |
| 7032559 | Cast-in object plate member, partition plate for intake port, intake-port forming sand core and cylinder head A partition plate (cast-in object plate member) is preliminarily set in an intake-port forming sand core, by which an intake port of a cylinder head is molded, and cast in during cast molding of the cylinder head for partitioning the intake port. The partition plate... | 04/25/2006 |
| 7017538 | Method of producing a powerful and efficient internal combustion four stroke engine using a blower and a single valve cylinder The present invention relates generally to a method for providing an efficient and powerful engine for internal combustion four stroke engines using a single valve per cylinder as the intake and exhaust valve. Outside air emerging from an air filter is forcibly pump... | 03/28/2006 |
| 7004138 | Pressure pulse communication in an engine intake manifold A servo-operated rotary vane valve is intended for external assembly through an opening in an engine inlet manifold passage with an integral rib formed therein. Baffling surfaces on the edge of the vane minimize pressure pulse communication over the rib when the val... | 02/28/2006 |
| 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 |
| 6959701 | Connecting piece A connecting piece (1) between a carburetor (4) and an inlet channel (3) is disposed in an internal combustion engine (2) of a portable handheld motor-driven work apparatus such as a motor-driven chain saw, cutoff machine, et cetera. The ... | 11/01/2005 |
| 6945226 | Intake manifold valve system, method, and diagnostic A valve control and diagnostic system uses physical stops to determine whether a connection between the valve motor and the valves has become degraded. The method can detect degradation in both the opening and closing direction, as well as in multi-valve systems, su... | 09/20/2005 |
| 6880509 | Intake manifolding for an internal combustion engine An intake manifolding for an internal combustion engine in which the swirl of at least one intake charge flowing into a combustion chamber through at least one intake port opening is variable, the intake port opening being controlled by an intake valve and at least ... | 04/19/2005 |
| 6880526 | Intake system for internal combustion engine An intake system for an internal combustion engine in which the inflow characteristic of a mixture of gas is varied by a partition wall provided replaceably in an intake port opening, whereby the output characteristic of the internal combustion engine is regulated t... | 04/19/2005 |
| 6874465 | Engine intake apparatus An intake apparatus for 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. ... | 04/05/2005 |
| 6761140 | Intake system for an internal combustion engine In an intake system for an internal combustion engine having a cylinder head with at least one inlet duct per cylinder, an essentially flat control flap is supported in the inlet duct on a pivot shaft pivotally about an axis which is disposed in spaced relationship ... | 07/13/2004 |
| 6539908 | Inlet conduit for a valve-controlled internal combustion engine and method of producing a flow deflection edge in an inlet conduit An inlet conduit is provided for a valve-controlled internal combustion engine, and also provided is a method for producing a flow deflection edge in an inlet conduit. In the region where the supply passage portion and the valve end passage portion of the... | 04/01/2003 |
| 6526940 | Multiple intake valve engine A multiple intake valve engine has a first intake port (1) and second intake port (2). The first intake port (1) has an outlet (7), and the second intake port (2) has an outlet (8). The first intake port (1) is provided upstream of the second intake port ... | 03/04/2003 |
| 6450142 | Airflow constrictor valve for automotive cylinder heads A cylinder head assembly including a cylinder head with an intake port and a pivot valve disposed within the intake port. The valve is pivotally connected to the intake port such that airflow urges the valve to an open position. The valve also includes a ... | 09/17/2002 |
| 6431140 | Intake port shape of internal combustion engine An object of the present invention is to restrict a part of intake flow which is apt to flow in a direction opposite to a counter swirl flow after colliding against a valve stem, and to produce an intense swirl while controlling a worsening of flow coeffi... | 08/13/2002 |
| 6360715 | Engine combustion system A combustion system for engines having at least one cylinder (10). The system may e.g. consist of an exhaust duct, an intake duct (20a), a cylinder chamber (30), a fuel injector for injecting fuel into the cylinder chamber (30), a piston (40) performing a... | 03/26/2002 |
| 6250281 | Direct intake port and helical intake port for engine An entire peripheral surface of a port bent portion (5) of a direct intake port (2) has a peripheral side surface portion (11) close to a cylinder axis (10). The peripheral side surface portion (11) provides a projection (12) for deviating intake air curr... | 06/26/2001 |
| 6202626 | Engine having combustion control system An internal combustion engine that is comprised of a combustion chamber formed by a cylinder bore closed at one end by a cylinder head and by a piston reciprocating in the cylinder bore. At least one intake passage serves the combustion chamber through an... | 03/20/2001 |
| 6189503 | Porting arrangement for direct injected engine An improved porting and cylinder head arrangement for a multi-valve overhead valve internal combustion engine. The porting arrangement in the cylinder head permits the use of two separate and relatively large intake passages beneath which a fuel injector ... | 02/20/2001 |
| 6173693 | Cylinder head A cylinder head has an intake port with an intake valve for selectively closing the intake port at an end thereof at an intake valve seat. The intake port has a substantially circular cross section in an area adjacent the intake valve seat. The intake por... | 01/16/2001 |
| 6142116 | Internal combustion engine with cylinder head having unique head bolt mounting and port arrangement An internal combustion engine including an engine block having a top wall and a plurality of longitudinally aligned, spaced cylinders. A cylinder head has upper and lower walls with side walls extending therebetween. The cylinder head is mounted to the en... | 11/07/2000 |
| 6092503 | Air intake equipment for internal combustion engine An improved intake equipment, in which the formation of a liquid fuel film due to deflection of the fuel can be avoided, has a plurality of independent air intake pipes connected to a combustion chamber, for introducing air thereto, collectors connected t... | 07/25/2000 |
| 6089203 | Internal combustion engine with offset intake valve seat for improved intake charge motion A reciprocating internal combustion engine uses intake valve seats which are offset from the intake port center lines such that charge motion of the inlet charge will be increased without the need for a charge motion control valve, and without causing a l... | 07/18/2000 |
