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6016654 Assembly for reducing the exhaust gas emissions of an internal combustion engine  
In order to reduce the exhaust gas emissions of automotive vehicle combustion engines including exhaust gas catalytic converters, the exhaust gases are caused to flow between the engine and the...
6009706 Exhaust manifold assembly in an internal combustion engine  
An exhaust manifold assembly including a one-point junction type exhaust manifold, whereby the occurrence of exhaust interference is prevented by a large capacity portion formed at a junction of...
6003310 Variable catalyst system  
In a transverse-mounted cylinder-in-line internal combustion engine (1) fitted in a motor vehicle, the exhaust gases from the side of the internal combustion engine opposite to the direction of...
6001436 Ceramic matrix composite turbocharger housing  
A heat-resistant, thermally insulative, ductile turbocharger housing for an internal combustion engine having a structure comprised at least partially of fiber reinforced ceramic matrix composite...
5979159 Exhaust after-treatment system for automotive vehicle  
An exhaust after-treatment system for treating an exhaust stream from an internal combustion engine of an automotive vehicle includes first and second exhaust treatment devices in a parallel path,...
5976473 Catalytic converter configuration with two or multiple-line exhaust conduction  
The catalytic converter configuration for exhaust systems of motor vehicles, in particular Otto engines, conducts the exhaust (at least in portions thereof) in two or more separate systems. Each...
5966933 Covering unit for motorcycle exhaust system  
A motorcycle exhaust system, which can prevent the generation of noise by vibrations and interference of an exhaust pipe heat insulating cover and a muffler heat insulating cover for protecting...
5956949 Variable exhaust system for V-engines II  
An exhaust system is provided for a motor vehicle having a V-type internal combustion engine forming two banks of cylinders. The exhaust system includes first and second exhaust manifolds, the...
5953912 Exhaust manifold of a multi-cylinder internal combustion engine  
A heat-insulating, light and vibration-proof exhaust manifold for a multi-cylinder internal combustion engine is provided. The exhaust manifold comprises an upper stream flange, a lower stream...
5950425 Exhaust manifold cooling  
An internal combustion engine of the type utilized to power an outboard motor and having a cooling arrangement for reducing the transmission of heat from exhaust gases flowing through an exhaust...
5947094 Methods and apparatus for making ceramic matrix composite lined automotive parts and fiber reinforced ceramic matrix composite automotive parts  
A method of forming a breakage resistant, erosion resistant ceramic liner for a part comprising the steps of, forming a liner of a ceramic material containing pores; filling the pores with a...
5937642 Exhaust manifold  
An exhaust manifold 10 is adapted for being mounted between a cylinder head and an exhaust pipe and has a plurality of branch pipes 12, 14, 16, 18 arranged in the longitudinal direction of the...
5937641 Catalytic converter for exhaust gases having a high surface area catalytic core element  
A catalytic converter having a catalytic core element comprising a rigid, foam-like, metallic material having interconnecting walls defining an open pattern of interconnected pores which join...
5937640 Thermal management system for catalytic converters  
A thermal management system for catalytic converters of an automotive internal combustion engine includes exhaust pipes from one bank of cylinders crossing over to a second side of the engine to a...
5937643 Ceramic coated exhaust manifold and method  
A cast iron exhaust manifold having an inside surface covered with a ceramic coating comprising, by weight, about 30% to about 70% unfused silica, about 5% to about 30% magnesia, about 5% to about...
5934070 Exhaust gas turbocharger and exhaust gas manifold arrangement on an internal combustion engine  
In a turbocharger and exhaust gas manifold arrangement on a multi-cylinder internal combustion engine comprising an exhaust gas manifold with an exhaust gas collection chamber having a discharge...
5927070 Lightweight exhaust manifold and exhaust pipe ducting for internal combustion engines  
An improved exhaust system for an internal combustion gasoline-and/or diesel-fueled engine includes an engine exhaust manifold which has been fabricated from carbon-carbon composite materials in...
5924282 Vehicle with improved exhaust system for internal combustion engine  
A vehicle includes an internal combustion engine and an improved exhaust system including an exhaust pipe connected to the internal combustion engine and a flexible hose connected to the exhaust...
5916137 Method for manufacture of major components for an exhaust system for a motorcar  
An exhaust manifold A that embodies the invention in one preferred form includes a double-wall structure 3 consisting of an inner shell IS and an outer shell OS. The double-wall structure has a...
5911683 Exhaust-gas collecting and cleaning device as well as exhaust-gas device for a multi-cylinder engine  
An exhaust gas collecting and cleaning device for a multi-cylinder engine comprising an exhaust-gas manifold (1) constructed as a casting and an exhaust-gas cleaning device (5) mounted near the...
5893783 Outboard motor exhaust system  
An exhaust system for an outboard motor powered by an internal combustion engine is disclosed. Preferably, the engine is of the "V"-type, having first and second banks defined by first and second...
5888641 Fiber reinforced ceramic matrix composite internal combustion engine exhaust manifold  
This invention discloses an exhaust manifold for an engine made of all fiber reinforced ceramic matrix composite material so as to be light weight and high temperature resistant. A method of making...
5887428 Gasket-less header for internal combustion engines  
By equipping a header wherein hollow pipes are welded to a rectangular plate used to mount the header with spaced apart extensions of the welds joining the pipes to the plate located on opposite...
5881554 Integrated manifold, muffler, and catalyst device  
An integrated manifold, muffler, and catalyst device for an engine uses perforated ducts surrounded by a resonator volume. Exhaust flow is routed from the exhaust ports by the ducts to a close...
5867985 Exhaust manifold for engine  
An exhaust manifold for an engine includes a manifold body 7 having a plurality of branch pipes and a common collecting chamber integrally connected to the branch pipes and communicating with an...
5860278 Apparatus and method for providing a compact low pressure drop exhaust manifold  
An exhaust manifold with several inlet ports and a combination of diffuser and nozzle portions associated with each inlet port for producing a high flow rate and a low pressure drop from entry to...
5829249 Internal combustion engine with exhaust passage and reactor having a common wall  
Disclosed herein is an internal combustion engine including a reactor including opposed first and second ends, an outer shell extending between the opposed ends, and a flow path extending between...
5822986 Exhaust system for engine  
An exhaust system for an engine having at least four exhaust ports firing in sequential order. The exhaust system includes an exhaust manifold having two collector sections which extend in...
5816045 Fan-type exhaust gas manifold for multi-cylinder internal-combustion engines and method of making same  
A fan-type manifold for multi-cylinder internal-combustion engines has several first individual pipe sections which are connected in pairs to respective ones of second pipe sections. The first...
5816044 Header assembly for internal combustion engines  
An improved header assembly for use in V-8 engines. In engines having eight cylinders, performance can be unexpectedly improved by utilizing an improved header assembly whereby the exhaust gas from...
5809778 Exhaust manifold with sheet metal inlet pipes  
Curved inlet pipes, which themselves are assembled from at least two curved individual pipes, are provided in an exhaust manifold with sheet metal inlet pipes from the respective cylinder head...
5806311 Exhaust arrangement for outboard motor  
A number of embodiments of four-cylinder, four-cycle outboard motors having a compact exhaust system and yet one in which the exhaust pulses from one cylinder are not transmitted to other cylinders...
5787709 Exhaust manifold  
An exhaust manifold of which each exhaust port is formed by a pipe member is disclosed. Each pipe member at one end portion has a wedge shape section. Each pipe member at the other end portion is...
5784882 Exhaust manifold for conducting exhaust gas out of an internal combustion engine  
An exhaust manifold for conducting exhaust gas from an internal combustion engine including a collection pipe structure having branches with engine flanges at their ends for mounting to cylinder...
5775100 Dual inlet muffler connection  
An exhaust system for use with the engine (10) of a vehicle. The exhaust system includes a pair of catalytic converters (18) connected to separate exhaust streams, with each catalytic converter...
5768891 Exhaust system with scavenging venturi  
A collector system for exhausts that uses a junction to merge the an engine's primary tubes in a linear arrangement. Thus, all exhaust gas passes cleanly through the unit with no interference or...
5761905 Exhaust manifold  
An exhaust manifold has a plurality of double pipes, each of which includes an inner pipe and an outer pipe, and a collecting pipe to which each of the double pipes is connected. The outer...
5740671 Balance box exhaust accelerator  
An exhaust component for an internal combustion engine includes a housing having an interior. Left and right inlet tubes are provided on an inlet end wall of the housing for conveying exhaust gases...
5729975 Semi-airgap manifold formation  
An engine exhaust manifold and method of making it, comprising an exhaust port flange having a plurality of exhaust port openings therethrough, a base half shell having a pair of elongated, spaced...
5729973 Exhaust collector with primary tube  
An exhaust collector for collecting exhaust gases from a multiple cylinder combustion engine to a common flow includes primary tubes. To reduce mass and heat losses in the exhaust system, the...
5727386 Structure of an exhaust manifold branch collecting portion  
A collecting portion for an exhaust manifold branch where a combined pipe portion including a plurality of pipes is welded to a collecting pipe wherein, (1) an intermediate member is provided...
5713200 Exhaust system for a turbocharged internal combustion engine  
A simple exhaust system is disclosed with improved operational reliability and an increased service life for a turbocharged internal combustion engine, in which system both the advantages of...
5706655 Thin-walled double pipe exhaust manifold  
A thin-walled double pipe exhaust manifold comprises a double pipe consisting of a comparatively thin inner tube and a comparatively thick outer tube, both spaced apart from each other...
5692375 Bifurcated exhaust manifold for a V-type engine  
A four stroke internal combustion engine (10) having a V-type configuration with eight cylinders (11). The firing order of the cylinders is such that a relatively balanced mechanical operation...
5692373 Exhaust manifold with integral catalytic converter  
A pollutant reducing exhaust manifold for an internal combustion engine incorporating a catalytic converter therein. The manifold has a plurality of header pipes connected to and receiving exhaust...
5689954 Exhaust gas manifold for an internal combustion engine and method of making such exhaust gas manifold  
An exhaust manifold for an internal combustion engine with at least two cylinders includes at least two adjacent connection branches which are interconnected by collection pipe sections having an...
5682741 Exhaust manifold for an internal combustion engine  
An exhaust manifold for an internal combustion engine includes an inner duct with flanges for connection to an engine. The inner duct is enclosed by an envelope consisting of two shells which are...
5636515 Sealing structure in exhaust system of internal combustion engine  
A sealing structure in an exhaust system of an internal combustion engine includes a gasket which is clamped between a cylinder head and a flange fastened to the cylinder head and which has a...
5632145 Internal combustion engine with rifled intake and exhaust manifolds  
A multi-cylinder internal combustion engine having at least one cylinder head with intake and exhaust ports and having an intake manifold with a common chamber and individual intake runners leading...
5606857 Exhaust system for an engine  
An exhaust system for an engine comprising an exhaust manifold which has an outer casing and an inner casing spaced from the outer casing. The inner casing comprises a collecting portion and inner...