Abstract: A method for operating an internal combustion engine configured to operate lean of stoichiometry includes reducing temperature of a portion of an exhaust gas feedstream recirculated to an intake system of the engine, and reducing mass flowrate of particulate matter and hydrocarbons borne in the recirculated portion of the exhaust gas feedstream upstream of the heat exchanger effective to reduce deposition of particulate matter and hydrocarbons onto and adhesion to surface areas of the heat exchanger.

Abstract: Methods and systems for controlling operation of exhaust of an engine including a particulate filter are provided. One example method includes generating vacuum during engine operation, and storing the vacuum. The method further includes, during or after engine shutdown, drawing ambient air through the particulate filter via the vacuum.

Abstract: An excessively large electric current is suppressed from flowing to an electrode. A particulate matter processing apparatus in which a processing part with an electrode installed therein is arranged in an exhaust passage of an internal combustion engine, wherein particulate matter is caused to aggregate by generating a potential difference between the electrode and the processing part, is provided with a power supply that is connected to the electrode and applies a voltage thereto, a current detection device that detects an electric current which passes through the electrode, an air fuel ratio detection device that detects or estimates an air fuel ratio of an exhaust gas which flows through the exhaust passage, and a voltage control device that makes the voltage applied to the electrode from the power supply smaller in cases where the air fuel ratio detected by the air fuel ratio detection device is a rich air fuel ratio, than in cases where it is a stoichiometric air fuel ratio or a lean air fuel ratio.

Abstract: Aggregation of particulate matter is facilitated. Provision is made for an electrode that is arranged in an exhaust passage of an internal combustion engine with a voltage to be applied thereto being able to be changed, a detection device that detects an electric current passing through the electrode, a determination device that determines whether a pulse current has been generated in the electric current detected by the detection device, and a control device that reduces the voltage to be applied more than that at this time in cases where a determination has been made by the determination device that a pulse current has been generated.

Abstract: An engine exhaust gas purifier includes a filter, a hydraulic load mechanism, a clog detector and a forced actuation valve. The filter purifies the exhaust gas of the engine. The hydraulic load mechanism is driven by the engine's power. The clog detector detects a clogging state of the filter. The forced actuation valve forcibly increases an actuation amount of the hydraulic load mechanism. The filter is regenerated by increasing an engine load while maintaining an engine rotating speed, by increasing the actuation amount of the hydraulic load mechanism with an actuation of the forced actuation valve on the basis of detection information of the clog detector.

Abstract: According to one embodiment, an apparatus for controlling the regeneration of a particulate filter of an internal combustion engine system includes an operating conditions module that is configured to monitor at least one engine system condition. The apparatus also includes a regeneration module that is configured to trigger a regeneration event if the at least one engine system condition meets a threshold. Further, the apparatus includes a thermal management module that is configured to operate the internal combustion engine system in a thermal management mode for a first time period while a regeneration event is triggered by the regeneration module. Also, the apparatus includes a high NOx module configured to operate the internal combustion engine system in a high NOx mode for a second time period following the first time period while the regeneration event is triggered by the regeneration module.

Abstract: According to an exemplary embodiment of the present disclosure, a system for removing matter from a filtering device of a work machine includes a gas pressurization assembly. An element of the gas pressurization assembly is removably attachable to a first orifice of the filtering device without removing the filtering device from a work machine to which the filtering device is connected. The system also includes a heat source fluidly connected to the gas pressurization assembly.

Abstract: A wall-flow filter comprises a catalyst for converting oxides of nitrogen in the presence of a reducing agent, which wall-flow filter comprising an extruded solid body comprising: 10-95% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% by weight optionally stabilized ceria, which catalyst comprising at least one metal, wherein: the at least one metal is present throughout the extruded solid body alone or in combination with: is also present in a higher concentration at a surface of the extruded solid body; is also carried in one or more coating layer(s) on a surface of the extruded solid body; or both.

Abstract: In one approach a method for operating an engine including a DPF is provided. The method includes adjusting a post fuel injection amount based on a rate of change of engine torque during DPF regeneration. As one example, the adjusting includes reducing the amount when the rate of change is positive, and increasing the amount when the rate of change is negative. Furthermore, the method may also include delivering exhaust gas to a turbocharger turbine, to an oxidation catalyst, and then a DPF, the adjusting of the post fuel injection further based on thermal inertia of the turbocharger.

Abstract: An ammonia generating device for treating exhaust gases of internal combustion engines, notably of automobile vehicles, includes a reservoir having a body capable of releasing ammonia by desorption and a heating device positioned inside the reservoir to heat the body in the reservoir. The heating device comprises a heat generating element that has an elongated form. The heating device further includes at least one heat transfer feature laid out along an axial direction of the heat generating element and extending in a direction radial to the heat generating element.

Abstract: Disclosed is an exhaust assembly for a construction machine having a revolving upperstructure and an engine mounted on the revolving upperstructure. The exhaust assembly is to be arranged inside the revolving upperstructure of the construction machine, and is provided with an after-treatment device for exhaust gas from the engine and an exhaust pipe for releasing exhaust gas, which has been guided from an outlet port of the after-treatment device, to an outside. The exhaust assembly includes a concave-convex part, which has plural concavities and convexities, is arranged on an inner wall of the exhaust pipe, and extends in a direction of discharge of the exhaust gas.

Abstract: The present invention provides an automotive exhaust system that removes harmful contaminants from engine exhaust and thus reduces air pollution, presents a number of distinct and significant benefits and advantages. Foremost, the Green Muffler subjects engine exhaust gases to a two-stage cleansing and purification process, first scrubbing the gases in a recirculating air-and-water bath; and then combining the remnant gases with an air-freshening chemical before release to the atmosphere. The Green Muffler, then, serves to lower a vehicle's carbon-dioxide and carbon-monoxide emissions and thereby reduces the level of air pollution and atmospheric warming due to car exhaust. Further, the Green Muffler reduces the temperature of vehicle exhaust, another plus for the planet.

Abstract: A malfunction diagnostic device for an exhaust gas control device is provided. The malfunction diagnostic device includes a malfunction determination unit that determines an exhaust gas control device provided in an exhaust system of an internal combustion engine malfunctions when a parameter that indicates exhaust gas purification performance of the exhaust gas control device crosses a threshold. A deterioration determination unit determines the degree of deterioration of the exhaust gas control device. A variable threshold setting unit variably sets the threshold based on the degree of deterioration of the exhaust gas control device in such a manner that the likelihood that the exhaust gas control device is determined to be malfunctioning is lower at lower degrees of deterioration of the exhaust gas control device.

Abstract: A system for the treatment of exhaust gases includes an engine, an exhaust system, and a controller. The exhaust aftertreatment system is configured to accept exhaust gas from the engine and includes a particulate filter configured to filter particulate matter from the exhaust gas. A controller is configured to determine an actual temperature of the particulate filter during a regeneration process and analyze the actual temperature relative to a temperature deviation threshold. The controller is configured to adjust the temperature deviation threshold in real time based, at least in part, on an operating condition of the engine and a mass flow of the exhaust gas.

Abstract: An exhaust device for a diesel vehicle may include a diesel fuel catalyst provided downstream of a turbocharger, a hydrocarbon Selective Catalyst Reduction (SCR) catalyst provided downstream of the diesel fuel catalyst, a catalyst-coated diesel particulate filter provided downstream of the hydrocarbon SCR catalyst, and a secondary fuel injector provided on an exhaust gas pipe between the turbocharger and the diesel fuel catalyst.

Abstract: A system assembly detects the amount of reducing agent and the amount of pollutant in an exhaust gas. The system assembly has a first pollutant sensor, which is cross-sensitive to the reducing agent, and is provided for emitting a first measuring signal proportional to the amount of pollutant in the exhaust gas for use in front of a filtering device for the selective reducing of the reducing agent or the pollutant in the exhaust gas. A second pollutant sensor, which is also cross-sensitive to the reducing agent, emits a second measuring signal proportional to the amount of pollutant in the exhaust gas for use behind the filtering device.

Abstract: Disclosed is a construction machine which comprises: a command changing regulation section; a loading device for imposing, on an engine, a load for raising an exhaust temperature of the engine up to a value at which particulate matter accumulated in a filter is burnt; and an instruction section for instructing the loading device to perform an operation for loading the engine. The instruction section prohibits the loading device from changing a loading level on the engine, during a period where a manipulation-state detection section detects a presence of a manipulation of a manipulation section. The command changing regulation section is set to a changing permission mode for permitting a value of a command which is to be assigned to an actuator control valve, to be changed according to changing a value of a command to be output from a manipulation device, during a period where the loading level is constant.

Abstract: A method for operating a turbocharged engine is disclosed. In one example, an engine operation is adjusted in response to a turbocharger expansion ratio. Degradation of the engine may be reduced under some engine operating conditions by adjusting engine operation in response to the turbocharger expansion ratio.

Abstract: An exhaust treatment system for an engine includes a regeneration device being in receipt of exhaust from the engine and positioned upstream of a diesel particulate filter. A compressor provides a source of compressed air. An air/fuel nozzle is coupled to the regeneration device, in receipt of a fuel supply as well as the compressed air. The fuel and compressed air are forced through an orifice of the nozzle to atomize the fuel. A bypass line provides compressed air from the compressor to the regeneration device without passing through the orifice of the nozzle. A valve is operable to allow compressed air to flow through the bypass line when a predetermined condition exists.

Abstract: A particulate filter regeneration system may include an exhaust inlet, an exhaust chamber coupled downstream of the exhaust inlet, an exhaust outlet, and a flow-through wall coupled between the exhaust chamber and the exhaust outlet. The particulate filter regeneration system may further include a heater for heating the particulate filter regeneration system to enable particulate combustion and a bypass coupled to the exhaust chamber for selectively opening a filter regeneration pathway to remove accumulated particulate.

Abstract: A hydraulic drive system for a working machine provides improved safety during forced regeneration. Upon input of a forced regeneration command signal from a forced regeneration switch, a controller detects non-operated states of all hydraulic actuators such as an arm cylinder arranged on a hydraulic excavator based on a lock detection signal from a gate lock detection switch, and also an attitude of a front working mechanism. The attitude is proper from the standpoint of safety. The detection is based on an arm angle signal from an arm angle sensor, a bucket angle signal from a bucket angle sensor and a boom pressure signal from a boom pressure sensor. Taking the detection of the non-operated states and proper attitude as conditions, the controller outputs control signals to a boosting proportional solenoid valve and flow-rate controlling, proportional solenoid valve to make a forced regenerator conduct forced regeneration.

Abstract: A method of controlling the regeneration of a particulate filter adapted to filter particulate matter present in exhaust emissions of an engine of a vehicle. The particulate filter is coupled to a heating device adapted to be activated so as to cause the heating of the particulate filter. The method includes sensing at least one operating parameter of the particulate filter, receiving sensed data relating to the at least one sensed operating parameter and conditioning the activation of the heating device based on a comparison of the received data with at least one respective threshold. The method further includes adjusting a value of the at least one threshold based on an operating condition of the vehicle, the operating condition being detected based on the received sensed data.

Abstract: A method and system for controlling a diesel particulate filter includes a particulate matter load determination module determining a particulate matter load in a diesel particulate filter (DPF), a desired oxygen level determination module determining a desired exhaust gas oxygen level based on the particulate matter load, an oxygen comparison module comparing the desired exhaust gas oxygen level and a measured exhaust gas oxygen level and generating a comparison signal and an electric DPF control module controlling an electrically heated catalyst in response to the comparison signal.

Abstract: A filter device for filtering automobile exhaust gas includes a case, front and rear support flanges mounted inside the case, and the filter member mounted between the front and rear support flanges. The front and rear support flanges are fixed vertically to the front and rear end portions of the filter member, respectively. The filter member includes a laminated or rolled-up metallic foam filter and a metallic mat or a jacket wrapping around the metallic foam filter. The porous pipe mounted inside the filter member is formed with a plurality of holes. The porous pipe is structured such that the width thereof decreases gradually towards the rear end portion or increase gradually towards the rear end portion, or the holes in the rear end portion are smaller, or a conical member is inserted in the inside space, or a pyramidal member is inserted in the inside space.

Abstract: This invention has an object to appropriately correct characteristic variation of a PM sensor and to improve detection accuracy of the sensor. The PM sensor has a pair of electrodes for capturing the PM in an exhaust gas, and a sensor output changes in accordance with a captured amount of the PM. If the sensor output gets close to a saturated state, the PM combustion control for combusting and removing the PM between the electrodes by a heater is executed.

Abstract: Provided is an exhaust gas purifying device structured such that a gas sensor or the like can be easily arranged while an installation length of gas purifying filters can be formed compact. The exhaust gas purifying device includes the gas purifying filters for purifying an exhaust gas discharged from an engine, inner cases internally provided with the gas purifying filters, and outer cases internally provided with the inner cases. Provided are sets of the gas purifying filters, the inner cases and the outer cases, and flange bodies connecting plural sets of outer cases are offset with respect to a connection boundary position of plural sets of gas purifying filters.

Abstract: An exhaust gas treatment system for an internal combustion engine is provided. The internal combustion engine has an engine off condition. The exhaust gas treatment system includes particulate filter (“PF”) device in fluid communication with an exhaust gas conduit, an electric heater, a primary energy storage device, a plurality of secondary energy storage devices, and a control module. The PF device has a filter structure for removal of particulates in the exhaust gas, and is selectively regenerated based on an amount of particulates trapped within the filter structure of the PF device. The electric heater is disposed upstream of the filter structure and is selectively energized to provide heat for regeneration of the PF device. The plurality of secondary energy storage devices are selectively connected to the primary energy storage device. The secondary energy storage devices selectively energize the electric heater.

Abstract: An exhaust gas treatment system for an internal combustion engine is provided. The internal combustion engine has an engine off condition. The exhaust gas treatment system includes particulate filter (“PF”) device in fluid communication with an exhaust gas conduit, an electric heater, a primary energy storage device, a single secondary energy storage device, and a control module. The PF device has a filter structure for removal of particulates in the exhaust gas, and is selectively regenerated based on an amount of particulates trapped within the filter structure of the PF device. The electric heater is disposed upstream of the filter structure and is selectively energized to provide heat for regeneration of the PF device. The single secondary energy storage device is selectively connected to the primary energy storage device. The single secondary energy storage device selectively energizes the electric heater.

Abstract: A work machine powered by an internal combustion engine having an exhaust aftertreatment device and air cleaner positioned over the top portion of the engine, which is mounted in the work machine chassis. A frame is releasably connected to the chassis through an adjustable mounting with three axis adjustment and the air cleaner is mounted to the frame. A carriage is releasably mounted to the frame and carries the exhaust aftertreatment device to enable independent removal for servicing and/or replacement.

Abstract: Various methods and systems are provided for a vehicle with an engine. In one example, a method includes identifying an approaching tunnel. The method further includes, responsive to a particulate load of a particulate filter, the particulate filter disposed in an exhaust treatment system of an engine of the vehicle, initiating regeneration of the particulate filter at a selected distance before the tunnel such that regeneration is performed before the vehicle enters the tunnel.

Abstract: An emission control system (ECS) and associated method for facilitating the emulsification and/or dispersion of hydrocarbon, diesel particulate matter (DPM) and other pollutants from the exhaust gas output from a diesel engine of a marine vessel, includes a pump, a control system that controls the pump, and a product container containing an environmentally approved dispersing product. The ECS injects dispersing product into the engine's water cooling and exhaust system, for example, into the cooling water downstream of the engine and upstream of the spray ring or mixing elbow of the exhaust system. The environmentally approved dispersing product is drawn from the product container via the pump and injected at a controlled rate into the raw cooling water, and the dispersing product/cooling water mixture admixes with the exhaust gas resulting in emulsification and/or dispersion of the hydrocarbon, DPM and other pollutants present in the exhaust gas.

Abstract: An exhaust treatment system includes an emissions treatment device for treating exhaust emitted from an internal combustion engine. The exhaust treatment system includes a frame adapted to support first and second spaced apart portions of the exhaust treatment system. The emissions treatment device interconnects the first and second portions and is in receipt of exhaust from the first portion and provides treated exhaust to the second portion. A first bracket is fixed to the frame and includes one of a protrusion and a receptacle. A second bracket is adapted to be fixed to the emissions treatment device and includes the other of the protrusion and the receptacle. The protrusion is positioned within the receptacle when the emissions treatment device is properly positioned. The protrusion interferes with one of the second bracket and the emissions treatment device to preclude assembly when the emissions treatment device is improperly positioned.

Abstract: In order to very accurately ascertain the pollutant emission of the motor vehicle, which occurs during the operation of an internal combustion engine, without the use of complex measurement and test engineering, it is proposed, that during the operation of the internal combustion engine at least one cylinder pressure is in each case acquired at specifiable crankshaft angles, scanning values of a heating rate assigned to the acquired cylinder pressures are determined, the scanning values of the heating rate are provided to a specifiable model as input values, a crankshaft angle assigned to the initiation of combustion, an air/fuel ratio and an exhaust gas recirculation rate are ascertained and provided to the model as input values and the pollutant emission is determined as a function of the input values using the model.

Abstract: A system is provided for inerting a volume in a vehicle has at least one exhaust gas extraction point on at least one internal combustion engine of the vehicle, and exhaust gas line for routing exhaust gas from the exhaust gas extraction point to the volume, and at least one exhaust gas inlet on the volume for introducing exhaust gas to generate a low-activity environment in the volume. Precisely in vehicles with internal combustion engines, using exhaust gas for inerting a volume makes it possible to suggest an especially simple, cost-effective and robust solution to guard against the formation of an ignitable mixture in the volume or the like.

Abstract: A detection apparatus is used to detect a failure of a particulate filter. The detection apparatus includes a PM (particulate matter) sensor, a timing estimating unit, and a failure determining unit. The PM sensor is disposed at a downstream side of the particulate filter in an exhaust passage. The PM sensor includes a pair of electrodes and detects an amount of the PM based on current passing through the PM deposited between the electrodes. The estimating unit estimates a failure-state energization timing at which the PM sensor starts to be energized due to the PM deposited between the electrodes assuming that the particulate filter has failed. The determining unit determines that the particulate filter is in a failure state when an actual energization timing of the PM sensor based on an output of the PM sensor is earlier than the failure-state energization timing estimated.

Abstract: The present disclosure relates to an active diesel particulate filter (DPF) regeneration system of an engine, and more particularly, to an active DPF regeneration system and method, in which a non-work load is arbitrarily provided to the engine to quickly perform an active DPF regeneration even in a state where substantial work of a construction machine is stopped.

Abstract: An after treatment exhaust system is provided. The after treatment exhaust system includes a diesel particulate filter configured to be supported at a first lateral side of a vehicle chassis and a selective catalytic reduction device configured to be supported at a second lateral side of the vehicle chassis opposite the first lateral side. The after treatment exhaust system also includes a first conduit configured to be in fluid communication between an engine and the diesel particulate filter, a second conduit configured to be in fluid communication between the diesel particulate filter and the selective catalytic reduction device and a third conduit having a first end coupled to the selective catalytic reduction device and at least one second end configured to be open to the environment.

Abstract: An exhaust gas aftertreatment method may include a regenerating a diesel particulate filter normally, accumulating a time from a point that the diesel particulate filter starts to be regenerated, determining whether the diesel particulate filter enters into an abnormal regeneration condition or not according to a predetermined condition of an engine, and regenerating the diesel particulate filter according to the abnormal regeneration logic, if the accumulated time is within a predetermined time in a condition that the abnormal regeneration condition is satisfied and regenerating the diesel particulate filter according to the normal regeneration logic, if the accumulated time is out of the predetermined time.

Abstract: In an exemplary embodiment, an internal combustion engine includes an oxidation catalyst configured to receive an exhaust gas flow from the internal combustion engine, a urea injector positioned downstream of the oxidation catalyst to inject a urea flow into the exhaust gas flow and a mixer positioned downstream of the urea injector to mix the exhaust gas flow and the urea flow to form a mixed exhaust gas and urea flow. The engine also includes a particulate filter and catalytic reduction assembly positioned downstream of the mixer to receive the mixed exhaust and urea flow from the mixer to form a treated exhaust gas flow and an exhaust gas recirculation system coupled to the particulate filter to receive a portion of the treated exhaust gas flow and recirculate the portion of the exhaust gas flow to be mixed with a fresh air flow for the internal combustion engine.

Abstract: In in-cylinder fuel multi-injection conducted during forced regeneration of a diesel particulate filter (“DPF”), control maps for multi-injection are constructed so as to be different for a first gas temperature raising control, which raises a catalyst temperature index temperature to a first judgment temperature only by multi-injection, and for a subsequent second exhaust gas temperature raising control, wherein post-injection is conducted in addition to multi-injection to raise a filter temperature index temperature to a second judgment temperature. In so doing, exhaust gas flowing into the DPF can be rapidly raised in temperature when performing forced regeneration of the DPF, thereby shortening the forced regeneration time and improving fuel consumption for forced regeneration.

Abstract: A particle separator for treating the exhaust gases of an internal combustion engine includes at least one metallic layer through which exhaust gas can flow. The metallic layer is located in a housing that includes an inlet opening, an outlet opening and a central axis. The housing is provided with at least one inspection or maintenance opening that laterally penetrates the housing and provides a passage through to the metallic layer. The particle separator can, in particular, remain operational without having to be dismantled or can autonomously remain fully open to a flow at all times. A motor vehicle having at least one particle separator is also provided.

Abstract: A particle separator for treating the exhaust gases of an internal combustion engine includes a housing having an inlet opening, an outlet opening, a cross section and a central axis. At least one metallic layer, through which exhaust gas can flow, is located in the housing and has an undulation or corrugation that spans the cross section of the housing. The particle separator has a large surface for providing the lowest possible flow resistance and a low risk of clogging. A motor vehicle having at least one particle separator is also provided.

Abstract: A particle separator for treating exhaust gases from an internal combustion engine includes a housing having an inlet opening, an outlet opening, a central axis, a first part with a first joining surface and a second part with a second joining surface. The first and second joining surfaces correspond to one another, so that the first and second parts can be positioned along the central axis relative to one another. At least one metallic layer, through which exhaust gas can flow, spaces the first and second joining surfaces apart over the entire circumference. The particle separator can be manufactured cost-effectively in a simple manner with few measures and, in particular, is suitable for retrofitting to an existing exhaust system. A method for producing the particle separator and a motor vehicle having the particle separator are also provided.

Abstract: Provided is an exhaust purification device for an internal combustion engine, wherein the operation of an internal combustion engine can be prevented from being maintained when a particulate filter is melted. An exhaust purification device is comprised of a particulate filter; a downstream-side temperature sensor which detects a downstream-side exhaust temperature; a filter temperature sensor which detects a filter temperature; an exhaust differential pressure detection device which calculates an exhaust differential pressure between an upstream-side exhaust pressure and a downstream-side exhaust pressure at predetermined time intervals; a notification device; and an ECU which controls the internal combustion engine based on a differential pressure variation first and second exhaust differential pressures or the downstream-side exhaust temperature.

Abstract: A system for treating the exhaust output by an internal combustion engine includes a regeneration positioned upstream from a diesel particulate filter. The regeneration unit combusts a fuel to heat the exhaust entering the diesel particulate filter. An air pump supplies a secondary source of compressed air to the regeneration unit and is adapted to be driven by the internal combustion engine. A speed sensor is coupled to the air pump and operable to output a signal indicative of a rotational speed of an air pump component. A controller receives the speed sensor signal and determines an operating speed of the internal combustion engine based on the speed sensor signal. The controller controls the regeneration unit based on the engine operating speed.

Abstract: An auxiliary filter arrangement for an exhaust aftertreatment system, such as a diesel particulate filter (DPF) system. The DPF communicates with an exhaust line to receive a flow of exhaust gases therethrough. An auxiliary filter is positioned in an auxiliary line or tube that connects an air supply, a pressure sensor, and/or any other aftertreatment system component to the exhaust line. The auxiliary filter can be a wire mesh filter operable to trap particulate or soot, thereby preventing the soot from traveling further up the auxiliary line toward the components of the air supply system, the pressure sensor, and/or the components of any other aftertreatment system communicating with the exhaust line through the auxiliary line.

Abstract: According to one embodiment, described herein is an apparatus for mitigating on-board diagnostic (OBD) faults generated by an OBD system of an internal combustion engine (ICE) system having a selective catalytic reduction system with a diesel exhaust fluid (DEF) decomposition tube. The apparatus includes a fault mitigation module that is configured to monitor at least one OBD signal of the OBD system and issue a request for regenerating the DEF decomposition tube when a value of the at least one OBD signal reaches a predetermined regeneration threshold corresponding with the at least one OBD signal. The regeneration threshold is reachable prior to an OBD fault threshold corresponding with the at least one OBD signal. The apparatus also includes a regeneration module that is configured to regenerate the DEF decomposition tube according to the issued request.

Abstract: In one exemplary embodiment of an exhaust system, the system includes an exhaust manifold in fluid communication with an internal combustion engine and a forced induction device in fluid communication with the exhaust manifold, the forced induction device including a housing. The system further includes a flow control device to control fluid communication between the forced induction device and a catalyst substrate and to control fluid communication between the exhaust manifold and the catalyst substrate.

Abstract: A control system for an engine includes an exhaust module and a combustion module. The exhaust module supplies a first MAF to exhaust produced by the engine upstream of a catalytic converter during regeneration of a PM filter located downstream of the catalytic converter. The combustion module, during the regeneration, supplies a first amount of fuel to a cylinder during an intake stroke based on the first MAF and a second MAF to the cylinder during the intake stroke. The combustion module, during the regeneration, further supplies a second amount of fuel to the cylinder during a subsequent intake stroke based on a first A/F ratio of the cylinder and an oxygen content of the exhaust downstream of the catalytic converter. A method for controlling an engine during regeneration of the PM filter is also provided.

Abstract: An exhaust purification system for an internal combustion engine, and a desulfurization method for the same, recovers purification performance of a denitrification catalyst by removing sulfur poisoned at the denitrification catalyst in an exhaust system.