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7017339 Exhaust system catalyst assembly for a dual crankshaft engine  
An exhaust system for a dual crankshaft engine system having a first engine and a second engine having a common exhaust member open at an end thereof for venting engine exhaust. A first exhaust...
6990806 Exhaust header for internal combustion engine  
The present invention 10 discloses an exhaust header having heat sinks forming an integral part of the header conduit 14 . The heat sinks are in the form of a plurality of radially positioned...
6978606 Equal length crossover pipe exhaust system  
An equal length crossover pipe exhaust system for an engine of a vehicle includes a plurality of exhaust manifolds for connection to outlets of cylinders of the engine. The equal length crossover...
6966402 Acoustical heat shield  
A heat shield includes an inner portion, an outer portion, first and second insulating portions, and a deflecting portion. The inner portion includes a reflective material to reflect thermal energy...
6962048 Engine exhaust apparatus  
An exhaust manifold of an engine exhaust apparatus includes a plurality of exhaust branches and a straight pipe section. The exhaust branches extend toward a confluence portion, from respective...
6959543 Exhaust gas manifold of an exhaust system for an internal combustion engine  
An exhaust gas manifold of an exhaust system for an internal combustion engine includes a diverging pipe elbow and exhaust pipes. Each exhaust pipe has an end and is connected to the diverging pipe...
6941751 Exhaust muffler and muffler system for use with an internal combustion engine  
An exhaust muffler system for use on a motorcycle or four-wheeled vehicle provides for operation in either of two modes, a regular configuration that provides a high degree of noise reduction, or a...
6933056 Exhaust manifold and method of making the same  
An exhaust manifold ( 10 ) of the present invention comprises a liner ( 12 ) that includes inner surface ( 14 ) defining manifold passages and an outer surface ( 16 ). The exhaust manifold ( 10 )...
6931843 Exhaust unit for engines particularly for high-performance vehicles  
A plurality of pipes adapted to be jointed to the exhaust ports of one line of an engine are joined together into a manifold comprising an equal number of pipe stubs, each receiving one of said...
6925802 System to improve after-treatment regeneration  
Exemplary methods, devices, and/or systems are suitable for regenerating a plurality of after-treatment units. An exemplary method includes selecting less than all of a plurality of after-treatment...
6918246 Structure of an exhaust manifold branch collecting portion  
A structure of an exhaust manifold branch collecting portion includes a double collecting pipe 21 for collecting a plurality of exhaust openings 11 A, 17 A. The double collecting pipe 21 is...
6912843 Exhaust system for a multi-cylinder internal combustion engine  
An exhaust system of a multi-cylinder internal combustion engine, particularly in a motor vehicle, has a first exhaust-gas line for receiving the exhaust gas from a first cylinder group of the...
6910471 Method for determining the fuel/air ratio in the individual cylinders of a multi-cylinder internal combustion engine  
A method is presented for determining the fuel/air ratio in the individual cylinders (single cylinder lambda) of an internal combustion engine having a plurality of cylinders, whose exhaust gases...
6907726 Exhaust system for a V-type engine  
An exhaust system for a V-type engine according to the embodiment of the present invention includes first and second front exhaust pipes that are respectively connected to first and second exhaust...
6892532 Exhaust system having low-stress exhaust manifold flange  
An exhaust system in an internal combustion engine has an exhaust manifold, an exhaust flange is connected to the exhaust manifold, and a turbocharger is connected to the exhaust flange. The...
6874317 Double pipe exhaust manifold  
A double pipe exhaust manifold includes an inner pipe, an outer pipe formed in a cylindrical shape by joining at least one side edge thereof by welding, a space retaining member disposed in an...
6840039 Exhaust manifold for improvement of purification efficiency and lifetime of a catalytic converter  
An exhaust manifold is disclosed that enhances the purification efficiency and lifetime of the catalyst in a catalytic converter. The manifold includes: a mixing chamber of a spheroidal shape...
6840038 Exhaust system for outboard motor  
An exhaust system for an internal combustion engine of an outboard motor is provided. The exhaust system provides dual exhaust passages, simplifying the engine's construction and reducing...
6837044 Structure of an exhaust manifold branch collecting portion  
A structure of an exhaust manifold branch collecting portion where a plurality of pipe members are joined integrally at their respective downstream ends, wherein a thickened portion is provided at...
6804954 Motorcycle exhaust system  
An exhaust system for use with a four-stroke engine having first and second cylinders. The cylinders generate exhaust pulses at uneven time intervals with respect to each other. The exhaust system...
6797402 Insulated heat shield with waved edge  
An improved heat shield offers thermal insulation and reduced noise transmission for vehicular engine components, including exhaust manifolds. The structure has three layers: an outer structural...
6789386 Exhaust gas manifold  
An exhaust gas manifold for mounting on a cylinder head of an internal combustion engine, composed of at least one cylinder support having bores for evacuating the exhaust gas. The exhaust gas...
6779628 Device for producing an overtone-rich sporty exhaust sound  
The device for producing an overtone-rich, sporty exhaust sound of the exhaust system of a four-cylinder engine includes exhaust pipes with four manifold pipes, at least one front pipe and a tail...
6763660 Exhaust structure in engine for automobile  
A connection of the exhaust emission control device, to which a collecting portion of an exhaust manifold extending rearwards and downwards from a rear face of a cylinder block is connected, is...
6745561 Exhaust manifold for vehicle  
An exhaust manifold for vehicle is disclosed. First and fourth runners among a plurality of runners connected to cylinders of an engine are respectively connected to sides of a gas confluence part....
6742332 Exhaust system for internal combustion engine having parallelogram-shaped cross-section  
The present invention is an exhaust system having a parallelogram-shaped cross section. The exhaust system includes a header flange for connection to one or more cylinder exhaust ports. The header...
6725656 Insulated exhaust manifold  
An exhaust manifold is provided having substantially ceramic inner and insulation layers. The manifold preferably has a metal outer structural layer to impart strength to the manifold. The ceramic...
6725655 Exhaust manifold for internal combustion engine  
An exhaust manifold provides improved output by suppressing exhaust interference between cylinders at the exhaust manifold. An air-fuel ratio sensor is installed in position where it can uniformly...
6722126 Exhaust arrangement for internal combustion engine  
An exhaust arrangement for a multi-cylinder internal combustion engine of a vehicle which has a row of cylinders. The arrangement includes an exhaust manifold including a branch portion having a...
6708488 Exhaust system for an internal combustion engine  
In an exhaust system for an internal combustion engine, having an exhaust manifold including an inner shell and an outer shell partially surrounding the inner shell, so that the space between the...
6702062 Exhaust system for automobile engine  
An exhaust system having an exhaust manifold that comprises a plurality of single-shell discrete exhaust pipes connected to an engine, a double-shell collective chambered pipe joined to the...
6688103 Apparatus for fastening an exhaust gas turbocharger on an exhaust chamber of a combustion engine  
An arrangement is provided for fastening an exhaust gas turbocharger on an exhaust gas manifold of an internal-combustion engine. A manifold flange is provided at the exhaust gas manifold, on which...
6651425 Stamped exhausts manifold for vehicle engines  
An exhaust manifold for a vehicle engine constructed of two stamped halves joined together along a longitudinal weld seam to form a compactly configured manifold. The assembled manifold includes...
6647715 Heat shield for an exhaust system of an internal combustion engine  
The present invention provides a heat shield for an exhaust system of an internal combustion engine. The shield comprises three metal layers shaped to conform generally to the shape of a high...
6647714 Exhaust header system  
An exhaust header system ( 20 ) for an internal combustion engine includes primary tubes ( 22 ), each having inlet ( 26 ) and outlet ( 28 ) ends. The inlet ends ( 26 ) are adapted to carry exhaust...
6644024 Exhaust system for a marine engine  
An exhaust system for a marine engine provides individual exhaust gas conduits that are maintained separately from water conduits until the individual exhaust gas conduits can be combined within a...
6634171 Exhaust scavenging system  
An exhaust scavenging system for an internal combustion engine including exhaust passages extending from the engine and an exhaust outlet system. A collector extends from the bundled ends of the...
6622481 Exhaust treatment device for an internal combustion engine  
An exhaust treatment device is provided for an internal combustion engine of a marine propulsion system. An outer chamber contains a first inner chamber within it and slidably supports the inner...
6609366 Branch pipes for an exhaust manifold and method of manufacturing the same  
Downstream fitting parts of exhaust manifold branch pipes which fit into a manifold container each has a sector or fan-like cross section which is formed so that the cross-section area of the...
6604358 Exhaust manifold  
In an exhaust manifold to be mounted on a cylinder head of an internal combustion engine which cylinder head includes a plurality of exhaust passages, the exhaust manifold includes a gas collector...
6598389 Insulated heat shield  
A heat shield provides thermal insulation and reduced noise transmission for under-the-hood vehicular engine components, such as exhaust manifolds. The structure is formed in three layers: an outer...
6581377 Carburization of vehicle manifold flanges to prevent corrosion  
An exhaust manifold for a vehicle engine and a manufacturing process to prevent corrosion of the manifold during shipping and storage. The manifold includes a manifold body having a plurality of...
6564767 Method for tuning internal combustion engine manifolds  
A method for tuning input/exhaust primaries in a multi-chamber spark ignition internal combustion engine. This method improves engine performance by correlating the timing of wave pulses in the...
6555070 Exhaust component and method for producing an exhaust component  
The exhaust component has an exhaust manifold with at least two inlet lines, and, for example, also a catalytic converter and a wall with two composite wall elements. The two wall elements...
6553959 Electronic flow control for a stratified EGR system  
A stratified exhaust gas re-circulation (EGR) engine uses an exhaust port per cylinder for exhausting exhaust gases and to re-circulate exhaust gas. The EGR valve may be phased from the exhaust...
6532737 Exhaust port gasket with cylinder-specific electronic oxygen sensors  
An exhaust port gasket is adapted for insertion between an engine exhaust port and an exhaust pipe flange for sealing therebetween. The gasket includes at least one primary aperture acting as an...
6523343 Air gap insulated exhaust manifold assembly for an internal combustion engine and a method of making same  
An air gap insulated exhaust manifold for an internal combustion engine of a motor vehicle that has a catalytic converter. The exhaust manifold includes an inner pipe and an outer pipe with a...
6511356 Exhaust system for outboard motor  
An exhaust system for an outboard motor includes an improved construction that can be compact enough for the limited space afforded within a powerhead of an outboard motor. The outboard motor...
6487854 Exhaust gas system with at least one guide surface and method for applying exhaust gas flows to a honeycomb body  
An exhaust gas system includes a collector for joining exhaust gas flows from two or more cylinders of a combustion engine. The collector has an outlet cross-section behind which a tubular jacket...
6478340 Y-pipe for thin boom tube exhaust pipes providing increased ground clearance on race cars  
A Y-pipe and flattened boom tube exhaust pipe for use on race cars, such as stock cars which race on oval tracks, which mount to the lower frame or chassis of the car, and which route exhaust...