Abstract: An exhaust pressure control valve comprises a casing including a bore and a pair of first and second shaft support parts, and a valve shaft placed across the bore and rotatably supported by the shaft support parts. A first end portion of the valve shaft is arranged protruding outside the casing. A throttle valve is secured to the valve shaft inside the bore. An actuator is coupled to the first end portion to open and close the throttle valve. The second shaft support part is located in a bypass passage downstream from a bypass valve and has an opening in which a cap formed with a through hole is fitted. The inside of the second shaft support part is allowed to communicate with atmosphere through the through hole, the bypass passage, and others so that an end face of a second end portion can be subjected to atmospheric pressure.

Abstract: The exhaust gas purification device has a first chamber having an exhaust pipe inlet, an ambient air inlet, and an exhaust gas outlet. A Venturi is arranged within the chamber, having an inlet end communicating with an ambient air inlet, a throat, and an outlet end communicating with an exhaust gas outlet. The Venturi has an exhaust gas inlet between its inlet end and its outlet end, receiving exhaust gas from within the chamber, directed generally towards the outlet end of the Venturi, so that ambient air and exhaust air are mixed in passing through the Venturi to its exhaust gas outlet. A perforated pipe within the first chamber receives the exhaust gas, and the exhaust gas escapes there from via the perforations, into the chamber and thence to the Venturi. A second chamber, having a catalytic substrate assembly mounted therein, receives the mixed ambient air and exhaust air from the exhaust gas outlet of the Venturi, and has an exhaust pipe outlet.

Abstract: The disclosure is directed to a flow distributor for use to maximize the efficiency and working life of a catalytic converter. The flow distributor is configured such that it directs the gas flow in the center of the exhaust gas stream to the periphery of the gas stream thereby resulting in a more uniform velocity flow pattern.

Abstract: A catalytic converter has a housing. The housing defines a conduit and has a support wall defining an opening in the conduit. A removable catalyst element covers the opening for treating an exhaust gas passing through the conduit. A removable bar abuts the catalyst element. A first end of the bar is anchored to the wall and a second end of the bar is bolted to the wall thus clamping the catalyst element between the wall and the bar.

Abstract: An apparatus for metering a urea or a urea-water solution for delivery to a catalytic converter assembly for removing nitrogen oxides from the exhaust gases of a Diesel engine, includes a housing block supporting function components communicating via a line, formed by recesses in the housing block, for transporting the reducing agent, and the walls of the line are formed by the housing block. This apparatus assures a simple line layout for reducing agent with a minimum number of sealing points that is accordingly appropriate for large-scale mass production.

Abstract: An apparatus for forming a mixture of reducing agent and exhaust gas, having a mixture-forming region into which an exhaust gas and a reducing agent can be introduced, wherein the wall of the mixture-forming region is embodied at least in part with protuberances and indentations, and in particular in corrugated fashion.

Abstract: An exhaust system for an internal combustion engine for a vehicle is provided. The system comprises an exhaust passage for transporting exhaust gases from the engine; an injector coupled to a wall of the exhaust passage, said injector including an injection axis that is angled relative to a longitudinal axis of a mixing region of the exhaust passage; and a first mixing device arranged within the exhaust passage downstream of the injector within the mixing region, said first mixing device including a plurality of flaps, wherein said plurality of flaps are inclined relative to the longitudinal axis; a second mixing device arranged within the exhaust passage downstream of the first mixing device; wherein the injection axis of the injector intersects the first mixing device.

Abstract: An inlet face for an aftertreatment device that prevents and/or eliminates face-plugging for a passageway where the inlet face is disposed. The inlet face includes a particular end surface disposed on an outer surface at the end of a substrate. The end surface includes at least one of a three-dimensional topographical configuration disposed at the end of the substrate, a chemical coating applied on the end of the substrate, or both a three-dimensional topographical configuration disposed on the end of the substrate and a chemical coating applied on the three-dimensional topographical configuration. As one example, the inlet face can be helpful in preventing carbonaceous fouling, which can result from engine exhaust material, such as carbon soot and other engine exhaust by-products.

Abstract: A flow device for an exhaust treatment system includes a base and at least one flow deflector tube secured to the base. The flow deflector tube includes a flow inlet, a flow outlet, and a passage that extends through the flow deflector tube from the flow inlet to the flow outlet. The flow outlet is at an angled orientation to the flow inlet. A method of mixing reactants and exhaust in an exhaust treatment system includes the steps of injecting reactants into exhaust gases flowing through an exhaust conduit used to convey the exhaust gases from an engine. Bent tubes are disposed in the exhaust conduit and used to mix the exhaust gases and the reactants.

Abstract: A gas diverter includes at least one port circumscribed by a port seat, and a valve subassembly for selectively obstructing the port. The valve subassembly comprises: (a) an actuation arm; (b) a disk coupled to the arm, and (c) an actuator for selectively causing the disk to be urged against said port seat to obstruct said port. In operation, the disk deforms elastically as it is urged against the port seat.

Abstract: A low emissions 2-stroke natural gas fueled engine includes at least one cylinder with an exhaust port in communication with a silencer/catalytic converter unit. The unit has first and second volumes in communication with each other. The first volume dampens spurious exhaust pressure excursions and removes particulates in the exhaust. The second volume houses an oxidation catalyst for treating exhaust to reduce exhaust emissions. The engine oil has at most 10 ppm zinc content to reduce metal poisons contained in the exhaust prior to contact with the oxidation catalyst. The engine oil preferably has a very low ash content to minimize sulfur combustion components in the exhaust to reduce masking of the oxidation catalyst. The first volume preferably has a pressure relief valve set to relieve at a pressure greater than the maximum normal operating pressure of the engine to avoid excessive pressure excursions of the engine exhaust from damaging the oxidation catalyst.

Abstract: An exhaust pipe 1 having a circular cross section is connected to a circular cylindrical housing 2 which creates part of pipe conduit. The housing 2 forms a storage space 21 having a diameter larger than the diameter of the exhaust pipe 1 and connecting to the rear connection part 22. The connection part 22 is tapered toward the downstream exhaust pipe 12 and the diameter of the connection part 22 is gradually reduced and its opening is welded into the opening of the downstream exhaust pipe 12. And a cylindrical honeycomb catalyst carrier 3 is stored in the storage space 21 so that the outer surface of the catalyst carrier is in contact with the inner surface of the storage space 21. An expanded portion 23 having a diameter larger than the diameter of the storage space 21 is outwardly expanded from the outer circumference of the housing 2 and connectingly provided on the front face of the storage space 21.

Abstract: The invention concerns an exhaust gas cooler employed with a tailpipe of a vehicle exhaust system and a method of cooling exhaust gasses before being emitted from the exhaust system into the atmosphere. The exhaust gas cooler may include a cooler housing having a substantially cylindrical shape with an open forward edge, an open rearward edge, and an internal diameter that is larger than the external diameter of the tailpipe, and a cooler support attached to and supporting the cooler housing such that the rearward edge of the tailpipe is located within the cooler housing between the forward and rearward edges of the cooler housing.

Abstract: In a vehicle exhaust apparatus constituting an exhaust passage to an exhaust muffler from a plurality of exhaust pipes connected to a multi-cylinder engine, an expansion chamber is formed along the exhaust passage and is connected to an exhaust collector portion. The expansion chamber is formed so as to expand outward from the exhaust collector portion in a substantially arc or chevron shape when viewed from a direction substantially orthogonal to an exhaust gasflow. Preferably, the expansion chamber is formed in a spherical shape and plural branched exhaust pipes are formed on the exhaust gas downstream side of the expansion chamber.

Abstract: A dosing pump assembly (9) is provided which is adapted to admix a liquid reducing agent to an exhaust gas flow. The dosing pump assembly includes an assembly housing (12) that houses an electric drive (15), a transmission (16), a membrane pump (17), and control and/or regulating electronics. The assembly housing (10) further includes a pre-mixing device in which the liquid reducing agent is impinged upon with a pressurized gas flow.

Abstract: A method and a device for operating an internal combustion engine which allow monitoring of errors during combustion without using a pressure sensor are provided. The internal combustion engine includes a final controlling element in an exhaust system of the internal combustion engine and a signal production unit for producing a signal as a function of a setting of the final controlling element. The signal is analyzed for a characteristic property of the signal. A value for the characteristic property of the signal is compared to a predefined value. An error is recognized as a function of a deviation of the value for the characteristic property of the signal from the predefined value during a fired operation of the internal combustion engine.

Abstract: An exhaust purification device includes a front catalyst arranged in an exhaust system of the internal combustion engine that is longitudinally mounted in a vehicle, a rear catalyst arranged in the exhaust system downstream of the front catalyst, and a bypass pipe that communicates with the exhaust passage of the exhaust system upstream of the front catalyst, communicates with the exhaust passage between the front catalyst and the rear catalyst, and is arranged at a position that is spaced apart in a direction perpendicular to the vibration direction of the exhaust system.

Abstract: In an exhaust system, a first oxygen sensor is attached to an exhaust pipe connected to a standard cylinder in which the amount of injected fuel is the closest to the average of the amounts of fuel injected in a plurality of cylinders. A controller calculates the air-fuel ratio of the standard cylinder based on the value detected by the first oxygen sensor. Then, based on the difference between the calculated air-fuel ratio of the standard cylinder and a predetermined target air-fuel ratio, the amount of correction to the amount of fuel injected in the standard cylinder is determined such that the air-fuel ratio of the standard cylinder is equal to the target air-fuel ratio. Furthermore, based on the amount of correction to the amount of fuel injected in the standard cylinder, the amounts of correction of the other cylinders are determined.

Abstract: A rain hat for heavy construction equipment is disclosed, which comprises a plate which corresponds to a shape of an outlet of the exhaust tube; a connection part which is formed at one end of the plate and is extended in a downward direction; and an elastic plate of which one end is connected with the connection part, and the other end is engaged with the exhaust tube, said elastic plate having a certain length, whereby the outlet of the exhaust tube, which is closed by means of the plate, opens as a discharge pressure overcomes an elastic force of the elastic plate when exhaust gas is discharged from the exhaust tube.

Abstract: An exhaust gas-cooling device for use on an exhaust gas conveyance system of a vehicle to emit exhaust gases from an engine to an outlet includes a pipe defining an exhaust gas passageway that is in fluid communication with the engine, and a diffuser in fluid communication with the exhaust gas passageway. The diffuser is configured for receiving the pipe, and has a body defining an outlet of the exhaust gas passageway to the ambient, and a diffusing structure disposed on the body generally opposite the outlet. The diffusing structure has a separating structure configured for receiving and diverting the flow of exhaust gas emitted from the pipe, and a guiding structure configured for guiding the diverted flow of exhaust gas along the body to the outlet.

Abstract: An air injection valve includes: a valve housing having first and second housing halves coupled detachably to each other, the first housing half defining a first inner space and having a flat wall that is formed with a plurality of suction holes in fluid communication with the first inner space, the second housing half defining a second inner space and being formed with an outlet in fluid communication with the second inner space and adapted to be connected to the muffler; a valve seat secured in the second inner space and formed with a valve opening for permitting fluid communication between the first and second inner spaces; and a flexible thin film reed having one end secured to the valve seat for covering and uncovering the valve opening.

Abstract: An exhaust system for a motor vehicle engine includes mixing vent flaps in the exhaust pipe which open responsive to exhaust temperature. The vent flap forms a portion of the exhaust pipe when closed and is pivotally attached along one edge to the exhaust pipe to open inwardly into the exhaust pipe to constrict and accelerate flow in the pipe to allow outside air to be drawn into the exhaust pipe. A magnetic catch latches the vent flap in its closed position and a magnetic release responsive to increased temperature of the exhaust stream releases the vent flap.

Abstract: The disclosure is directed to a flow distributor for use to maximize the efficiency and working life of a catalytic converter. The flow distributor is configured such that it directs the gas flow in the center of the exhaust gas stream to the periphery of the gas stream thereby resulting in a more uniform velocity flow pattern.

Abstract: An exhaust flow rate control valve includes an on-off valve which is switched between a closed state in which a flow passage area of an exhaust pipe is decreased, and an opened state in which the flow passage area is increased. A notch is formed in the on-off valve, and a recess is formed in an inner pipe member of the exhaust pipe to correspond to the notch. A resilient member, for biasing the on-off valve in a closing direction, is disposed in a space formed between the recess and an outer pipe member of the exhaust pipe. Thus, the degree of freedom is improved in setting the operating characteristic of the on-off valve, without increasing the size of an exhaust structure.

Abstract: An exhaust-carrying component (2) of an exhaust system (1) for an internal combustion engine is provided, in particular for a motor vehicle. The component (2) includes a pipe (4) through which exhaust gas can flow from one longitudinal end (6) to the other longitudinal end (7) and which has between its longitudinal ends (6, 7) a longitudinal section (8), the wall (9) of which is provided with perforations (10). The component (2) also has a housing (5) which surrounds the pipe (4) in a circumferential direction and to which the pipe (4) is fixedly connected in both one end area (11) having a longitudinal end (6) and in another end area (12) having the other longitudinal end (7). In order for the component (2) to nevertheless be able to resist the thermal stresses that occur during operation, the perforations (10) are designed so that the longitudinal section (8) can absorb thermal longitudinal expansion forces between the pipe (4) and the housing (5) through elastic deformation.

Abstract: An exhaust gas control apparatus that includes a pressure difference sensor that detects the difference in pressure between the upstream side and the downstream side of a particulate filter (DPNR catalyst), which captures particulate matter that is present in exhaust gas. In the exhaust gas control apparatus, the pipes that introduce the pressure to the pressure difference sensor include an upstream pipe that introduces the pressure on the upstream side of the particulate filter to the pressure difference sensor. The upstream pipe includes an expanded pipe portion, which has an inner diameter greater than that of the portion of the upstream pipe near the pressure difference sensor, near the particulate filter. With this configuration, the deposition of particulate matter, soot, soluble organic fractions, and the like in the upstream pipe is suppressed, which minimizes clogging of the upstream pipe.

Abstract: An exhaust system for discharging exhaust gases through an exhaust passageway, emitted from a multi-cylinder combustion engine mounted on a motor vehicle includes a partition plate formed therein for dividing the exhaust passageway into a plurality of juxtaposed exhaust passages and having a communicating hole defined therein, and an exhaust gas sensor positioned at a location in proximity of the communicating hole for detecting a composition of the exhaust gases.

Abstract: The present invention relates to an air-gap-insulated exhaust manifold (1) of an internal combustion engine, in particular in a motor vehicle, having a collecting line (2) that extends in a longitudinal direction (3), an outlet opening (4) oriented in the longitudinal direction (3), multiple inlet openings (5) oriented across the longitudinal direction (3) and a flange (6) that extends in the longitudinal direction (3) and includes the inlet openings (5), wherein an inside pipe (11) is situated in an outside pipe (10), forming an air-gap insulation, and whereby a gas-carrying outside pipe section (13) is provided in the area of at least one of the inlet openings (5) and leads from the respective inlet opening (5) to an assigned inside pipe inlet (14) which is at a distance from the flange (6). The inside pipe (11) is attached to the outside pipe (10) only in an attachment area (15).

Abstract: A passive, exhaust pressure actuated valve assembly for placement inside a tubular exhaust conduit is pivotally mounted to an off-center axle for rotation between fully closed and fully opened positions. A bias element forces the valve flap toward the fully closed position. The valve flap is shaped in a manner enabling use of the interior surface of the exhaust conduit to define stops at the full closed and full opened positions. The valve flap shape, in conjunction with the bias element arrangement, enables the flap to lie substantially parallel to a longitudinal axis of the conduit in the fully opened position, which provides for minimum back pressure in the conduit.

Abstract: An InfraRed Suppression System (IRSS) vectors engine exhaust flow away from the exhaust manifold plane, the high aspect ratio exhaust duct defined as a ratio of a maximum nozzle length to a maximum nozzle width, the ratio greater than 2:1.

Abstract: When a misfire occurs in any cylinder of an engine, an exhaust switching valve is closed to pass exhaust gas through an HC adsorbing section to a catalytic purifying section having a three-way catalyst (step S130). Thus, unburned fuel (HC) mixed in the exhaust gas due to a misfire of the engine can be adsorbed in the HC adsorbing section. Accordingly, unburned fuel (HC) due to a misfire after the start of the engine is completed can be prevented from being exhausted.

Abstract: An exhaust throttle valve protected from disturbance due to stones scattered during operation of a vehicle. Front side exhaust pipes and rear side exhaust pipes are connected to a catalyst chamber disposed below a crankcase. The exhaust chamber and an exhaust chamber to the rear thereof are connected to each other via a rear exhaust pipe. The diameter of the rear exhaust pipe is smaller than the lateral width of each of the catalyst chamber and the exhaust chamber, so that a recessed space is externally formed so as to recede inside of the vehicle. An exhaust throttle valve is received in the space. The exhaust throttle valve is partially exposed to the outside of the rear exhaust pipe and a throttle valve is received in the rear exhaust pipe to throttle-control the passage-sectional area of the rear exhaust pipe according to the rotation of the engine.

Abstract: An exhaust system for a motorcycle includes a plurality of exhaust pipes connected respectively to exhaust ports of cylinders of a multi-cylinder engine; a manifold portion connected to the exhaust pipes; and a muffler connected to a downstream side of the manifold portion, the manifold portion being disposed below the engine, wherein the manifold portion is disposed sideways of an oil pan disposed below the engine so as to overlap the oil pan when seen in a side view of the motorcycle, and the exhaust pipes are connected to the manifold portion from a front side of the motorcycle.

Abstract: An exhaust gas charger for a vehicle engine which includes an exhaust pipe with narrow openings at both ends thereof and a wide center cavity, an inner pillar at the axis of the pipe, a circular body, a wind skirt, a plurality of tension springs and a plurality of pulling rods, characterized in that the exhaust pipe is formed from the inner pillar having one end being mounted with a top tube and the other end is mounted with a rear tube such that the top tube and the rear tube are engaged with each other and a spring suspension hook is positioned at the engaging area of the two tubes and the circular body is positioned at the interior of the top tube and has a larger size than the opening of the top tube.

Abstract: An exhaust system for an internal combustion engine having two banks of cylinders by which pulses of exhaust gas are alternately directed to a diverter subassembly. The diverter subassembly, which is located in the muffler, includes a perforated gas decelerator chamber which divides each pulse of exhaust gas between two exhaust outlets and causes a low pressure wave to occur in the exhaust system to enhance scavenging of a subsequent pulse of exhaust gas and thereby improve engine performance and mileage. The muffler further includes one or more cores and may or may not include a dead air space chamber to provide attenuation and tonal balance to the exiting exhaust gas.

Abstract: A passive, exhaust pressure actuated valve assembly for placement inside a tubular exhaust conduit is pivotally mounted to an off-center axle for rotation between fully closed and fully opened positions. A bias element forces the valve flap toward the fully closed position. The valve flap is shaped in a manner enabling use of the interior surface of the exhaust conduit to define stops at the full closed and full opened positions. The valve flap shape, in conjunction with the bias element arrangement, enables the flap to lie substantially parallel to a longitudinal axis of the conduit in the fully opened position, which provides for minimum back pressure in the conduit. The valve assembly finds particularly advantageous use inside a bypass through pipe of a muffler assembly.

Abstract: An exhaust-gas system has an exhaust-gas pipe for guiding an exhaust-gas flow and an injection nozzle mounted to the exhaust-gas pipe for injecting reducing agent into the exhaust-gas flow. Downstream of the injection nozzle, the exhaust-gas pipe branches into at least two exhaust-gas lines. A fluid divider, formed with a front face that faces upstream into the gas flow, is disposed between the injection nozzle and the branching. The front face is oriented with respect to the cross section of the exhaust-gas pipe and the injection nozzle, such that the exhaust-gas flow and the medium are divided among the exhaust-gas lines in a predefined dividing ratio.

Abstract: An exhaust aftertreatment system has a side inlet flow diffuser and provides even flow exhaust distribution to an aftertreatment element.

Abstract: The invention relates to a device for controlling an exhaust gas stream, in particular of an internal combustion engine in a passenger vehicle. Said device comprises a housing that can be traversed by exhaust gas (1) and a first displaceable actuating element (5) that is supported on the housing (1). The exhaust gas stream can be selectively guided into a first exhaust gas conduit (3) and/or a second exhaust gas conduit (4) by the displacement of the first actuating element (5). A second actuating element (15) is provided on the housing (1), said actuating element controlling a variable of thee exhaust gas stream.

Abstract: In an exhaust purification system that purifies exhaust from a plurality of cylinder groups of an internal combustion engine, an exhaust passageway (1,51) from each cylinder group is divided into a plurality of passageways (2a, 2b, 52a, 52b/3,53). With regard to one or more of the divided exhaust passageways (3,53), the amount of exhaust passing therethrough is reduced so as to reduce the heat release to the outside from the exhaust as a whole. In this manner, the temperature of exhaust introduced into an exhaust purification device (4,54) is kept at high temperature.

Abstract: An exhaust system includes a first exhaust pipe group, a first catalyst device, and a second exhaust pipe group. A first coupling pipe of the first exhaust pipe group includes spaces in communication with respective first exhaust pipes. A second coupling pipe of the second exhaust pipe group includes spaces in communication with respective second exhaust pipes. The first exhaust pipe group and the second exhaust pipe group are joined such that the respective spaces are opposed to one another, with the first catalyst device interposed therebetween.

Abstract: A process and an apparatus for treating exhaust gas from an internal combustion engine include at least two exhaust-gas treatment modules. An exhaust gas stream can be at least partly deflected depending on a load state of the internal combustion engine in such a way that at least parts of the exhaust gas flow through one or more modules. This makes it possible to advantageously construct and operate even an exhaust gas system of large-volume internal combustion engines, in which conversion and treatment of the exhaust gas is carried out in individual modules, even in no-load operation, basically at very low exhaust gas mass flow rates. The individual modules can be adapted to various load levels of the internal combustion engine. A rail-borne vehicle and a water-borne vehicle having the apparatus are also provided.

Abstract: A flow path splitter duct is provided. The flow path splitter duct includes a main hub, a first outlet hub and a second outlet hub. The main hub has a plurality of inlet ports each being separated by at least one wall. The first outlet hub has a plurality of first duct outlet ports, each of the first duct outlet ports are in fluid communication with only one of the corresponding plurality of inlet ports. The second outlet hub has a plurality of second duct outlet ports, each of the second duct outlet ports are in fluid communication with only one of the corresponding plurality of inlet ports, wherein engine exhaust gas that enters one of the plurality of inlet ports is simultaneously diverted to only one of the first duct outlet ports and to only one of the second duct outlet ports. A vertical takeoff and landing aircraft is also provided that includes the flow path splitter duct. A method of using the same is also provided.

Abstract: An improved exhaust system for a diesel engine and an improved overhead exhaust manifold segment therefore wherein the improvement comprises a plurality of catalytic converter elements removably positionable in the overhead exhaust manifold over the outlet ends of a series of exhaust port legs extending upwardly to the bottom of the overhead exhaust manifold from the cylinder exhaust ports.

Abstract: An exhaust pipe is connected to an engine with a muffler attached to an exhaust pipe. An exhaust valve is provided for controlling the flow rate of an exhaust gas on the side of the exhaust pipe. A recessed portion is directed toward the center of the vehicle body and is formed on the side of the swing arm with the exhaust valve being disposed in front in the vicinity of the recessed portion. Operating wires are laid along an air cleaner case so as to open and close the exhaust valve. A servo motor is disposed at such a position that it can be covered with the seat cowl so as to drive the operating wires. The muffler is provided with a muffler protector and a cover portion that integral extends from the muffler protector with the exhaust valve being covered with the cover portion.

Abstract: A magnetic exhaust system is provided for facilitating the conducting of at least some of the exhaust gases, created by an internal combustion engine powered apparatus, such as an auxiliary electrical generator, from the engine's exhaust to a position external to an enclosure in which the apparatus is situated. The magnetic exhaust system is releasably connectable to the engine, and is configured to be applied to a wide range of apparatus and enclosure configurations.

Abstract: An exhaust gas cleaning apparatus is provided that has a main exhaust passage, a main catalytic converter disposed in the main exhaust passage, a bypass exhaust passage, a bypass catalytic converter disposed in the bypass exhaust passage, a selector valve and a controller. The controller controls the internal combustion engine to a rich combustion state with a rich air fuel ratio while the controller controls the selector valve to block the flow of the exhaust gas through the main exhaust passage, and then, afterwards, controls the selector valve to direct the flow of the exhaust gas through the main exhaust passage such that residual air remaining in the main exhaust passage mixes with rich exhaust gas from the bypass exhaust passage.

Abstract: An exhaust gas throttle valve disposed in the exhaust system of an engine, wherein the center axis of rotation of a valve shaft 5 is set at a position deviated from the center axis of the exhaust gas passage, and two recessed portions 11 are symmetrically formed in the circumferential portion of a valve body 4 by cutting the surface thereof. The positions where the recessed portions 11 are formed are on the side of the center axis of the exhaust gas passage beyond the center axis 12 of rotation, and at where the peripheral portion of the valve body 4 faces the edge portions 9 where insertion holes 8 for the valve shaft 5 are opened in the exhaust gas passage. At these positions, the distance is a minimum between the peripheral portion of the valve body 4 and the edge portions 9. The recessed portions 11 work to increase the gap relative to the edge portions 9 at that positions.

Abstract: A system for removing particulates from the exhaust gas of a vehicle internal combustion engine, particularly during those times that the emission of such particulates into the atmosphere would be of greatest danger to persons in the vicinity of the vehicle, includes a valve connected to the vehicle exhaust manifold for normally directing exhaust to the atmosphere, when in the non-activated condition. The valve directs exhaust to a particulate filter, when in the activated condition. Starting of the engine activates the valve for a predetermined period of time. The valve optionally is GPS-controlled and can be disabled manually or automatically by a switch, which detects the backpressure in the exhaust system. An exhaust pressure sensor monitors the exhaust backpressure, and a circuit device responsive to the exhaust pressure maintains the valve continuously in the non-activated condition, when the exhaust backpressure reaches a predetermined level for a predetermined period of time.

Abstract: An end cap for an exhaust treatment device is disclosed. The end cap has a cylindrical housing with an axial direction, a radial direction substantially orthogonal to the axial direction, a first open end, and a second closed end opposing the first open end in the axial direction. The end cap also has an integral port member extending from an annular surface of the cylindrical housing. The integral port member has a central axis aligned in the radial direction, and an exterior surface of the integral port member tangentially connects to an exterior surface of the cylindrical housing.