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| Number | Title | Issue Date |
| 7281511 | Air intake for motor vehicles This invention describes an improved intake tube for internal combustion vehicles by locally increasing and then decreasing the airflow over the Mass Airflow Sensor (MAS) preventing a lean condition, which over time is catastrophic to the life of the engine. The int... | 10/16/2007 |
| 7278389 | Automobile intake air flow plenum and plenum diverter An airflow diverter and replacement air intake plenum is disclosed that provides an increase in the air speed and airflow within the intake plenum of an automobile. The increase is the result of providing appropriately sized and shaped apparatus to smooth out the ai... | 10/09/2007 |
| 7273026 | Roller follower body The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i... | 09/25/2007 |
| 7231898 | Intake manifold cross talk sealing A flange seal molded as a single piece from a synthetic material which can withstand the high heat and pressure produced by the engine. The flange seal is shaped to correspond the intake manifold housing. Connecting portions on the flange seal separate the individua... | 06/19/2007 |
| 7146961 | Engine air inlet flow enhancement device for internal combustion engines An airflow treatment and regulation device for internal combustion engines that stabilizes inlet airflow characteristics before induction into a fuel metering and mixing device. The air stabilization device provides a non-restrictive honeycomb treatment element thro... | 12/12/2006 |
| 7128039 | Engine air induction arrangement and method Chaotic air flow structures in internal combustion engine manifolds may lead to poor combustion performance and hence undesirable emissions such as visible smoke. Manifolds with flow characteristics compromised by other design requirements are especially prone to th... | 10/31/2006 |
| 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 |
| 6955163 | Fuel/nitrous oxide injection plate The nitrous oxide injection tube 18 is formed with delivery ports 24 that include interior bores 38 that communicate with the internal passage 26 of the injection tube and larger external bores 40 that extend through the exterior s... | 10/18/2005 |
| 6263851 | Air inlet device for watercraft engine An air inlet device for an engine powering a water propulsion device of a watercraft, the watercraft having a hull defining an engine compartment in which the engine is positioned, is disclosed. The engine has a body defining at least one combustion chamb... | 07/24/2001 |
| 5596962 | Intake silencer in vertical type engine An intake silencer of a vertical-type engine includes two silencing chambers. A first intake silencing chamber is disposed adjacent to the body of the engine; a second intake silencing chamber is located upstream in a flow of intake air from the first int... | 01/28/1997 |
| 5119769 | Vertical three cylinder two cycle engine with single carburetor In a two cycle internal combustion engine (80) comprising three cylinders (22, 24, 26) vertically in-line, a single intake manifold (82) services all three of the cylinders, and a single fuel delivery device (84), such as a carburetor, on the manifold del... | 06/09/1992 |
| 5076218 | Constant velocity intake manifold The constant velocity intake manifold is designed to provide an increased velocity of the fuel-air mixture into the reed valve (engine inlet port) of a two-cycle engine. The present design of feeding device transmitting the fuel-air mixture eminating from... | 12/31/1991 |
| 5022355 | Internal combustion engine An internal combustion engine comprising an engine block including first and second cylinders and first and second combustion air passages for supplying combustion air to the first and second cylinders, respectively, a first carburetor communicating with ... | 06/11/1991 |
| 5005535 | Internal Combustion engine with recessed intake manifold An internal combustion engine comprising an engine member including an intake manifold mounting face having therein a series of openings, an intake manifold including an exterior surface comprising an engine mounting surface on the manifold mounting face,... | 04/09/1991 |
| 4917053 | Fuel supplying system for plural-cylinder internal combustion engine Several embodiments of enrichment system for internal combustion engines for supplying enrichment fuel in response to a predetermined condition. In each embodiment, the engine has multiple chambers with multiple intake passages and a balance passage that ... | 04/17/1990 |
| 4879975 | Alcohol fuel operation conversion means for internal combustion engines A modified carburetion and manifold arrangement to enable internal combustion engines to efficiently use fuels such as alcohols having high latent heat of vaporization. A variable venturi carburetion means (30) is combined with two manifolds-one (20) bein... | 11/14/1989 |
| 4856464 | Air distribution apparatus for use with an internal combustion engine An air-distribution apparatus for use with an internal combustion engine, wherein end portions of a plurality of branched air-intake tubes are respectively connected to air-intake holes of respective cylinders of a multiple-cylinder engine. A multiple-bar... | 08/15/1989 |
| 4712519 | Intake manifold for a three-cylinder air-fuel mixture suction type engine In an intake manifold for a multi-cylinder air-fuel mixture suction type engine according to the present invention, the manifold body is formed into a simplified hollow shell-shape which is elongate bilaterally. And a carburetor is installed on the one en... | 12/15/1987 |
| 4622940 | Porting arrangement for internal combustion engine A porting and valve arrangement for an internal combustion engine embodying three valves serving the same chamber. Separate passages extend from each of the valves and merge into a common symmetrical portion for facilitating good distribution and cooperat... | 11/18/1986 |
| 4492212 | Internal combustion engine of improved efficiency An internal combustion engine of improved efficiency having a cylinder and an intake manifold, the manifold containing therein between the plane of laminated flow and the cylinder end of the manifold a device for increasing turbulence, said device includi... | 01/08/1985 |
| 4450793 | Intake system of an internal combustion engine An intake system of an internal combustion engine having at least two intake ports formed in the cylinder head. Each of the intake ports comprises an inlet port portion and a port terminating portion formed around the valve stem of the intake valve. Each ... | 05/29/1984 |
| 4441470 | Device for use with the intake manifold of an internal combustion engine A small tube is placed in each of the branches of the intake manifold of an internal combustion engine. The tube is aligned with respect to the intake port and the intake valve so as to direct a portion of the fuel air mixture flowing through the tube awa... | 04/10/1984 |
| 4359974 | Intake manifold for multicylinder internal combustion engine An intake manifold for a multicylinder internal combustion engine having fuel supplying means such as a fuel injection device or a carburetor includes a branch intake conduits each communicating with one of the cylinders of the engine, an extension tube c... | 11/23/1982 |
| 4328781 | Exhaust gas recirculating passage arrangement for cross-flow type internal combustion engines A cross-flow type internal combustion engine having an exhaust gas recirculating passage formed in the cylinder head. The passage is located adjacent to cooling water jackets so that the gas in the passage is cooled by the water in the jackets. The passag... | 05/11/1982 |
| 4325346 | Four-cycle internal combustion engine The present invention relates to a four-cycle internal combustion engine in which a strong swirl can be generated within the combustion chamber through the directionality of the mixed gas supplied from the main suction path and the injection of a gas from... | 04/20/1982 |
| 4318380 | Intake system for multi-cylinder internal combustion engine Several embodiments of induction systems for multiple cylinder internal combustion engines that improve engine performance, particularly at idle and low speed. In each embodiment a charge is delivered to the chambers at idle and low speed through a relati... | 03/09/1982 |
| 4286554 | Intake system of an internal combustion engine An intake system of an internal combustion engine having a helically-shaped intake port comprising a substantially straight inlet passage portion and a helical portion. The intake manifold comprises substantially straight manifold branches, each being con... | 09/01/1981 |
| 4264535 | Fuel intake system for multi-cylinder internal combustion engine For a multi-cylinder internal combustion engine having at least two sets of engine cylinders, a fuel intake system comprises at least first and second intake passages communicated to the engine cylinders of the respective sets and through which respective... | 04/28/1981 |
| 4257384 | Intake control apparatus of engine An induction system for an internal combustion engine having both main and auxiliary induction passages serving a given cylinder. The auxiliary induction passage has a substantially smaller sectional area so that a charge delivered to the cylinder through... | 03/24/1981 |
| 4194043 | Welded aluminum die cast article A welded aluminum die cast article and method for making. Two or more die cast pieces are welded together to form a single part. The welding takes place along a welding seam characterized by formation of a relatively deep molten pool of metal within the w... | 03/18/1980 |
| 4177640 | Internal combustion engine system Hemispherical combustion chambers of a cross flow type cylinder head, having symmetrically disposed and synchronously sparked plugs are fed a near stoichiometric air fuel mixture containing up to 40% EGR gas which after combustion is exhausted through ind... | 12/11/1979 |
| 4108124 | Manifold system Herein disclosed is a manifold system for an internal combustion engine of the type having an auxiliary combustion chamber associated with each main combustion chamber and connected by a torch passage. The manifold system includes a main intake manifold f... | 08/22/1978 |
| 4068637 | Multicylinder internal combustion engine An automotive multicylinder internal combustion engine is liable to emit noxious gases under medium and low load conditions. Such air-polluting emissions as hydrocarbons, carbon monoxide and oxides of nitrogen are effectively reduced by supplying a rich m... | 01/17/1978 |
| 4051673 | Automotive internal combustion engine A spark-igniton multiple-cylinder internal combustion engine for an automotive vehicle, having a first set of cylinders to operate on a relatively lean air-fuel mixture and a second set of cylinders to operate on a relatively rich air-fuel mixture, wherei... | 10/04/1977 |
| 4036015 | Multi-cylinder internal combustion engine An intake manifold of a multi-cylinder internal combustion engine is constructed so as to feed a rich air-fuel mixture into certain cylinders, and a lean mixture into the others.... | 07/19/1977 |
| 4013049 | Manifold apparatus for multi-cylinder motorcycle engines Intake manifold apparatus having a plurality of upwardly extending headers connected to a single distribution manifold for use with a downdraft carburetor on a multi-cylinder motorcycle engine.... | 03/22/1977 |
| 3975468 | Mount for carburetors A mount for a carburetor which reduces the transfer of heat and vibration from an engine which includes an elastic support ring interposed, with a load carrying capacity, between the mounting flanges of the engine and the carburetor and a neck portion of ... | 08/17/1976 |
| 3972324 | Fuel induction system A fuel induction system for a spark-ignited multicylinder internal combustion engine including a carburetor, a mixing chamber and an intake manifold. The carburetor includes a primary barrel which connects initially to an inlet in the mixing chamber. An o... | 08/03/1976 |
