Abstract: A system for purifying an exhaust gas and an exhaust system having the same while preventing degradation of a selective reduction catalyst may include an exhaust pipe connected to an engine, the exhaust gas generated at the engine passing through the exhaust pipe, a particulate filter mounted on the exhaust pipe, coated with a selective reduction catalyst adapted to reduce nitrogen oxides contained in the exhaust gas by an injection of a reducing agent, and adapted to trap particulate matters contained in the exhaust gas, and one or more injectors adapted to inject the reducing agent and/or oxygen storage capacity material together or separately into the exhaust gas passing through the exhaust pipe.

Abstract: Methods and systems are provided for selecting a group of cylinders for selective deactivation, in a variable displacement engine system, based at least on a regeneration state of an exhaust catalyst. The position of one or more valves and throttles may be adjusted based on the selective deactivation to reduce back-flow through the disabled cylinders while also maintaining conditions of a downstream exhaust catalyst. Pre-ignition and knock detection windows and thresholds may also be adjusted based on the deactivation to improve the efficiency of knock and pre-ignition detection.

Abstract: A system according to the principles of the present disclosure includes a rate determination module, a storage level determination module, and an air/fuel ratio control module. The rate determination module determines an ammonia generation rate in a three-way catalyst based on a reaction efficiency and a reactant level. The storage level determination module determines an ammonia storage level in a selective catalytic reduction (SCR) catalyst positioned downstream from the three-way catalyst based on the ammonia generation rate. The air/fuel ratio control module controls an air/fuel ratio of an engine based on the ammonia storage level.

Abstract: A method for operating a motor vehicle internal combustion engine with an exhaust system branch in which a wall-flow exhaust particle filter is arranged. An amount of ash and an amount of soot accumulated in the exhaust particle filter are continuously determined. An ash increase value characterizing an increase in the amount of ash is determined and if pre-set conditions are present, the operation of the internal combustion engine is changed over to a special operating mode for performing an ash detachment and transportation operation, in which operating variables of the internal combustion engine are set such that, on the exhaust entry side in the exhaust particle filter, a pre-settable minimum exhaust flow speed results at which detachment of ash attached to the channel walls of the exhaust particle filter and transportation of detached ash in the direction of the respective inlet channel end is made possible.

Abstract: A DPF regeneration control device includes: a differential pressure sensor which detects a differential pressure between a front and a rear of a DPF; a DPF differential pressure setting unit which sets a DPF differential pressure generated in accordance with a total accumulated amount of soot and ash, sets a DPF differential pressure generated when an ash accumulation amount corresponds to an accumulation amount at which washing is required, as a washing request threshold, and sets a DPF differential pressure generated when the ash accumulation amount is larger than the washing request threshold such that a reduction in output is necessary, as an output reduction threshold; a washing request issuing unit which determines whether or not the DPF differential pressure has reached the washing request threshold; and an output reduction warning unit which determines whether or not the DPF differential pressure has reached the output reduction threshold.

Abstract: An exhaust system is provided. The exhaust system includes a first sensor that senses a level of nitrous oxide (NOx) in exhaust gas and generates a first sensor signal. A second sensor senses a level of ammonia (NH3) in the exhaust gas and generates a second sensor signal. A control module receives the first sensor signal and the second sensor signal, determines a desired reductant dosage based on the first sensor signal and the second sensor signal, and generates an injector control signal based on the desired reductant dosage.

Abstract: The present invention is intended to provide a technique which serves to suppress unburnt HC from being discharged to a downstream side, when fuel is injected from a fuel supply valve for removing clogging thereof. The present invention is provided with a fuel supply valve that supplies fuel to an exhaust passage of an internal combustion engine, and an ignition unit that ignites the fuel supplied from the fuel supply valve, wherein in cases where there is a possibility that clogging may occur in an injection hole of the fuel supply valve, fuel for removal of clogging is injected from the fuel supply valve. An amount of the fuel to be injected from the fuel supply valve for removing clogging thereof is an amount of fuel which is able to be combusted by being ignited by means of the ignition unit.

Abstract: In a diesel engine equipped with a system for automatic regeneration of a particulate filter, an automatic regeneration mode is inhibited in the case where there is recorded a number higher than a pre-set threshold of unfavorable event. When the automatic regeneration mode is inhibited, an on-demand regeneration mode is simultaneously enabled, which can be activated manually by the driver. If an on-demand regeneration is not performed before the vehicle has covered a certain mileage since the automatic regeneration mode was inhibited, the vehicle is set in a condition of limited performance.

Abstract: A control apparatus for an internal combustion engine detects an amount of particulate matter contained in an exhaust gas in an exhaust passage, according to an electrical property across electrodes of a particulate matter sensor disposed in the exhaust passage of the internal combustion engine. The term “electrical property” here refers to a property that changes with the amount of particulate matter deposited, for example, a current value of when a predetermined voltage is applied. After the internal combustion engine is started and detection of the amount of the particulate matter is completed, an element section of the particulate matter sensor is set to a predetermined temperature range. The particulate matter deposited on the element section is thereby burned and removed. The control apparatus maintains the element section in the predetermined temperature range after burning and removing the particulate matter until the internal combustion engine stops.

Abstract: An exhaust purifying device for an internal combustion engine which can restrict an influence of a measurement error in a NOx sensor provided at the downstream side of a catalyst and can optimally maintain a NOx purifying rate. The device includes a catalytic converter carrying a selective catalytic reduction catalyst provided in an exhaust passage of the engine to selectively reduce nitrogen oxides, a urea water adding valve for adding urea water to the catalyst as a reducing agent, a NOx sensor provided at the downstream side of the catalyst, and an ECU for adjusting an addition amount of the urea water adding valve based upon output of the NOx sensor, wherein a urea water addition amount adjusting process is executed under a condition that a NOx amount to be generated in the engine increases.

Abstract: A device for evaporating a urea-water solution includes a delivery duct for the urea-water solution. The delivery duct extends through at least a first zone and a second zone for the introduction of heat energy. The zones can be heated separately from one another and, in the second zone, the delivery duct initially has a meandering course in a second inlet region, and thereafter has a rectilinear course. A method for evaporating a urea-water solution includes pre-heating the urea-water solution in the first zone to a temperature in a range from 100° C. to 150° C. and evaporating the urea-water solution in the second zone at a temperature in a range from 420° C. to 490° C. In particular, this significantly reduces the tendency for such an exhaust-gas-external evaporator for a urea-water solution to become blocked. A motor vehicle is also provided.

Abstract: In one example, a method of operating an engine having a diesel particulate filter in a vehicle, the particulate filter having a length and depth, includes performing particulate filter regeneration in response to temperature variation across the length and/or depth of the particulate filter.

Abstract: A device (40) for reducing pollutants, in particular nitrogen oxides, in an exhaust gas flow of an internal combustion engine, includes a reducing agent (46), in particular a urea-water solution, which is stored in a storage tank (42), a metering module, in particular a nozzle (68), for injecting the reducing agent (46) into the exhaust gas flow, and a pump (56, 100) for delivering the reducing agent (46) from a suction point (62) in the storage tank (42) to the metering module via lines (58, 66). A pump (56, 100) lies beneath a reducing agent level (44) in the storage tank (42), and a non-return valve is provided.

Abstract: A construction machine including: a frame; an engine on a frame; a hydraulic pump; a guard panel disposed on the frame to surround an engine room and including a maintenance port for the hydraulic pump; an exhaust-gas-purification device inside the engine room; and a support member to support an exhaust-gas-aftertreatment device including the exhaust-gas-purification device just above the hydraulic pump. The support member includes a first portion to support the exhaust-gas-purification device and a second portion to support a NOx-reducing catalyst at a position closer to the maintenance port than the exhaust-gas-purification device. The catalyst supporting portion supports the NOx-reducing catalyst at a position higher than the exhaust-gas-purification device so as to form, over the hydraulic pump, a maintenance space having an upper end higher than an upper end of a space formed under the first portion and the exhaust-gas-purification device.

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: Arrangement for introducing a liquid medium into exhaust gases from a combustion engine: an exhaust gas line (2), an injection chamber (3) bounded in radial directions by a tubular wall (8), an injector (13) injects the liquid medium into the injection chamber; a mixing duct (14) to which the injection chamber has an outlet (10) for delivering exhaust gases; a bypass duct (15) which has an outlet (17) via which it is connected to the mixing duct, and an endwall (7) at the injection chamber's downstream end and demarcating the chamber from the mixing duct, such that the chamber's outlet is situated at the periphery of the endwall. The outlet of the bypass duct is close to the outlet of the injection chamber so that the exhaust gases which flow into the mixing duct via the chamber's outlet will collide with the exhaust gases which flow into the mixing duct via the outlet of the bypass duct.

Abstract: Provided is a diesel engine which can efficiently regenerate a diesel particulate filter. The control for regeneration using an ECU includes a first regeneration by burning particulate matter at slightly more than 300° C. for 20 minutes when the accumulation of particulate matter exceeds a first threshold; a second regeneration by burning particulate matter at approximately 560° C. for 30 minutes by an additional injection to remove particulate matter other than ash when the accumulation of particulate matter exceeds the first threshold for a first predetermined period of time, or every 100 hours; and a third regeneration by burning particulate matter at approximately 600° C. for 15 minutes by an additional injection to remove particulate matter other than ash when the accumulation of particulate matter exceeds a second threshold and an emergency regeneration switch is pushed, or after 50 hours since the second or third regeneration and the emergency regeneration switch is pushed.

Abstract: Provided is an exhaust gas purifying device which can improve handling work ability such as maintenance of an engine while it can improve a purifying performance of an exhaust gas of the engine. The exhaust gas purifying device is provided with a plurality of gas purifying bodies which purifies the exhaust gas discharged by the engine, a plurality of inside cases which are inward provided with the gas purifying bodies, and outside which are inward provided with the inside cases. An outlet end portion of an inside case in an exhaust gas upstream side and an inlet end portion of an in an exhaust gas downstream side are superposed as a double structure. Sensor boss bodies for supporting exhaust gas sensors are arranged in an outside surface of the outlet end portion or the inlet end portion of the double structure. The sensor boss bodies are extended to an outside direction of the outside case.

Abstract: A device includes a pipeline section for an exhaust gas flow. The pipeline section has an inlet end, an outlet end, a rectilinear section and a protuberance having an opening for installing a metering device for a liquid additive (in particular urea/water solution) in the rectilinear section. The protuberance has a height and an extent and the extent is at least twice as large as the height. At least one respective disk-shaped honeycomb body is disposed at each of the inlet end and the outlet end. A central axis of the opening is oriented toward one of the disk-shaped honeycomb bodies. A motor vehicle having the device is also provided.

Abstract: An apparatus and method of controlling a vehicle aftertreatment system is provided. The aftertreatment system treats exhaust gas produced by the vehicle engine and includes a particulate filter, and a NOx reducing device such as a selective catalytic reduction (SCR) device. The particulate filter is configured to regenerate to remove accumulated particles when the exhaust gas is heated above a regeneration temperature. A diagnostic device is included for monitoring the aftertreatment system. The diagnostic device may be a sensor for measuring the oxides of nitrogen (NOx) and/or an SCR efficiency monitor. A controller is employed to optimize the function of the diagnostic device. The controller does not enable the diagnostic device when the vehicle is powered until one or more entry conditions are satisfied.

Abstract: A system and method for treating diesel exhaust in a diesel exhaust system, and specifically for improved NOx conversion efficiency during particulate filter regeneration, is disclosed. The exhaust gas treatment system includes a diesel oxidation catalyst (DOC); a diesel particulate filter (DPF) fluidly coupled to the DOC; a mixer fluidly coupled to the DOC and DPF, a thermal control device (TCD) positioned after the DPF, a NOx slip catalyst (NSC), at least one temperature sensor (TS), wherein the thermal control device reduces the temperature of the exhaust gas stream. The thermal control device used in conjunction with the NOx slip catalyst provides for improved overall exhaust system NOx conversion efficiency during active DPF regeneration.

Abstract: An arrangement for injecting a reducing agent into an exhaust line of a combustion engine (1). An exhaust line (3) leads exhaust gases from the engine. A first turbine (4) is in the exhaust line (3). A second turbine (20) in the exhaust line is downstream of the first turbine (4) in the intended direction of flow in the exhaust line. An injector (19) injects reducing agent into the exhaust line (3) so that it is warmed and vaporized by the warm exhaust gases in the exhaust line (3), and an SCR catalyst (29). The injector (19) is in the exhaust line downstream of the first turbine (4) and upstream of the second turbine (20).

Abstract: The internal combustion engine has an upstream side NOx selective reduction catalyst and a downstream side NOx selective reduction catalyst which are arranged in an engine exhaust passage. The upstream side NOx selective reduction catalyst has a region where the NOx removal rate becomes substantially constant when the ratio of concentration of ammonia to NOx of the inflowing exhaust rises. The internal combustion engine has an operating state in that region where the ratio of concentration of ammonia to NOx is maintained. The downstream side NOx selective reduction catalyst has an ammonia oxidation ability which is larger than the upstream side NOx selective reduction catalyst.

Abstract: An embodiment (control apparatus) for an internal combustion engine according to the present invention determines, based on an output value of the downstream air-fuel ratio sensor disposed downstream of a three-way catalyst, determines which air-fuel ratio request, a rich request or a lean request, is occurring. The control apparatus sets a target upstream air-fuel ratio to a target rich air-fuel ratio when the rich request is occurring, and sets the target upstream air-fuel ratio to a target lean air-fuel ratio when the lean request is occurring. Each of the target rich air-fuel ratio and the target lean air-fuel ratio is varied depending on an intake air amount. Further, the control apparatus increases a purge amount of an evaporated fuel as a magnitude (air-fuel ratio change amount ?AF, |afLean?afRich|) of a difference between the target rich air-fuel ratio and the target lean air-fuel ratio becomes larger.

Abstract: A modular exhaust system is disclosed for treating the exhaust from a fossil fuel powered prime mover; the exhaust system includes bricks, inserts placed inside of the bricks and funnels to direct exhaust through various flow paths in order to treat the exhaust.

Abstract: A filter cartridge for a delivery device for a reducing agent includes at least one filter wall and at least one supporting wall together forming an interior space. The at least one supporting wall has an outflow opening and a bypass opening. The outflow opening can be coupled to the delivery device and the bypass opening bypasses the filter wall. A delivery device and a motor vehicle having a filter cartridge are also provided.

Abstract: Provided is an emission treatment system and method for simultaneously remediating the nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons present in diesel engine exhaust streams. The emission treatment system has an oxidation catalyst upstream of a soot filter coated with a material effective in the Selective Catalytic Reduction (SCR) of NOx by a reductant, e.g., ammonia. Also provided is a method for disposing an SCR catalyst composition on a wall flow monolith that provides adequate catalyst loading, but does not result in unsuitable back pressures in the exhaust.

Abstract: The present invention relates to an apparatus and method for vaporizing a fluid to improve performance of a selective catalytic reduction catalyst. A vaporizer including a plurality of flow channels having an increased surface area may facilitate vaporization and mixing of the fluid in, e.g., an engine exhaust or gas containing nitrous oxides. The vaporizer may be located in an exhaust system downstream of a fluid injection site and upstream of a selective catalytic reduction catalyst. The exhaust discharged from the selective catalytic reduction catalyst may have a reduced concentration of nitrogen oxides.

Abstract: Arrangement for introducing a liquid medium into exhaust gases from a combustion engine, having a mixing duct, an injector for injecting the liquid medium into the mixing duct, and an inlet duct situated upstream of the mixing duct. The inlet duct has a first duct section which is annular in cross-section and a second duct section which is annular in cross-section. The second duct section is situated downstream of the first duct section and surrounds the mixing duct. The first duct section surrounds the second duct section. The mixing duct further has a flow reversal section via which an annular outlet of the first duct section is connected to an annular inlet of the second duct section and which is configured to reverse the direction of flow of the exhaust gases flowing through the inlet duct, to flow through the second duct section in a direction opposite to that of the exhaust gases in the first duct section.

Abstract: An engine exhaust purification device comprises: a selective reduction type NOx catalyst; an oxidation catalyst disposed on an upstream side of the NOx catalyst; a reducing agent adding device which adds an NOx reducing agent to an exhaust gas of an engine; a control device which controls the reducing agent adding device; and an NO2 ratio calculation device which estimates an NO2 ratio of the exhaust gas flowing into the NOx catalyst. The NO2 ratio of the exhaust gas flowing into the NOx catalyst is calculated by a catalytic reaction model where the oxidation reaction of NO in the oxidation catalyst is numerically formulated, and the NO2 ratio is reflected to calculate an amount of ammonia adsorbed on the NOx catalyst by a catalytic reaction model where a chemical reaction concerned with the reduction of NOx in the NOx catalyst is numerically formulated.

Abstract: Through the use transfer functions, or other modeling types, directed toward the individual operation of an engine and after-treatment subsystems, an optimizer determines the trade-offs between fuel consumption, urea consumption, and reduction of NOx and PM emissions for each component of the integrated system. Evaluation of these trade-offs permits the optimizer to dictate how each component should be controlled, or adjusted, to achieve optimal fuel (and urea) consumption while meeting the constraints bounding the solution. Response characteristics can be triggered by adjusting certain engine operating levers in order to achieve optimal performance of the integrated system.

Abstract: A method is applied to regenerate particulate matter in a particulate filter of a hybrid electric vehicle having a combination of a combustion engine and an electric motor for propelling the vehicle, the hybrid electric vehicle having an electrically heated catalyst disposed in flow communication with the particulate filter in an exhaust system of the vehicle. The method determines whether the combustion engine is or is not combusting fuel, and under a condition where the combustion engine is not combusting fuel, the catalyst is electrically heated until it has reached a temperature suitable to cause ignition of the particulate matter. The electric motor is used to facilitate rotation of the combustion engine at a rotational speed suitable to draw air into and be exhausted out of the combustion engine into the exhaust system, across the catalyst, and into the particulate filter to facilitate ignition of the particulate in the filter.

Abstract: System for storing an internal combustion engine exhaust gas liquid additive, the said system comprising a tank for storing the additive and an “immersed” baseplate (1) positioned through an opening made in the bottom wall of the tank, the said baseplate comprising at least one orifice through which a system for injecting the said additive into the exhaust gases can be fed, and also incorporating at least one other active component of the storage system and/or of the injection system.

Abstract: An exhaust aftertreatment system for an engine is provided that includes a burner, an air supply system and a control module. The air supply system may be in fluid communication with the burner and may include an air compressor disposed upstream from the burner. The air compressor may include a pump mechanism, a clutch assembly selectively transferring torque from the engine to the pump mechanism, and a motor selectively driving the pump mechanism. The control module may be in communication with the clutch assembly and the motor. The control module may selectively switch the air compressor between a first operating mode in which the clutch assembly transfers torque from the engine to the pump mechanism and a second operating mode in which the motor drives the pump mechanism.

Abstract: A method includes determining whether selective catalytic reduction (SCR) test conditions are present, and in response to the SCR test conditions being present, operating an SCR aftertreatment system at a number of reduced ammonia to NOx ratio (ANR) operating points. The method further includes determining a deNOx efficiency value corresponding to each of the ANR operating points. The method further includes determining a reductant correction value in response to the deNOx efficiency values corresponding to each of the ANR operating points, and providing a reductant injection command in response to the reductant correction value.

Abstract: A mixing device includes: an elbow pipe attached to an outlet pipe of a filter device; a straight pipe connected to a downstream side of the elbow pipe; and an injector attached to the elbow pipe and injecting a reductant aqueous solution into an inside of the elbow pipe toward the straight pipe. The elbow pipe is provided with an injector attachment to which the injector is attached with a bolt. An attachment face of the injector attachment is substantially flush with an end of an injection nozzle of the injector. The injector attachment is provided with a recess at which an end of the injection nozzle is exposed, the recess being enlarged toward the straight pipe. A heat-insulation layer located near an outer periphery of the recess is provided inside the injector attachment. An end of the bolt penetrates the injector from an outside to reach the heat-insulation layer.

Abstract: A monitoring system for a selective catalyst reduction system according to the present invention includes a selective catalyst reduction system that reacts with ammonia and reduces NOx, a first NOx sensor that is disposed upstream of the selective catalyst reduction system and measures the amount of the NOx that flows into the selective catalyst reduction system, a second NOx sensor that is disposed downstream of the selective catalyst reduction system and measures the amount of the NOx that is reduced, an injector that is disposed between the first NOx sensor and the selective catalyst reduction system and injects a urea solution, and a control portion that calculates reduction efficiency based on signals that are detected from the first NOx sensor and the second NOx sensor, determines the necessary amount of the ammonia according to the reduction efficiency, and controls the injection amount of the urea solution through the injector.

Abstract: A method for an exhaust after treatment system of an engine including at least one selective catalyst reaction (SCR), at least one clean up catalyst downstream from the SCR, a urea injector upstream of the SCR and a first NOx sensor downstream the clean up catalyst. The method includes the steps of injecting a predetermined amount of urea by the injector, providing a second NOx sensor between the SCR and the clean up catalyst, measuring the NOx content received by the first NOx sensor, measuring the NOx content received by the second NOx sensor, comparing the first and the second NOx content with each other, and reducing the predetermined amount of urea if the first NOx sensor measures a higher NOx content than the second NOx sensor.

Abstract: A solid SCR system includes solid state reductant, a container storing the solid state reductant, an exhaust pipe supplying gas state reductant converted from the solid state reductant and SCR catalyst disposed on the exhaust pipe, an exhaust heat recovery device disposed on the exhaust pipe and recovering waste heat from exhaust gas exhausted through the exhaust pipe and a heat exchanger connected to the exhaust heat recovery device and supplying the recovered heat to the solid state reductant.

Abstract: A cogeneration apparatus includes: an airtight chamber provided within an apparatus casing and constructed to prevent exhaust gas of a prime mover from flowing out therefrom; and a relief valve provided in a water flow path within the airtight chamber and constructed to discharge the exhaust gas, contained in the water flow path, to the airtight chamber.

Abstract: An exhaust gas treatment system for an internal combustion engine for determining a total amount of sulfur that is stored on at least one aftertreatment device is provided. The exhaust gas treatment system includes a control module that monitors operation of the internal combustion engine for an amount of fuel consumed and an amount of oil consumed by the internal combustion engine. The control module includes a sulfur adsorption module and a total sulfur storage module. The sulfur adsorption module determines a rate of sulfur adsorption in at least one aftertreatment device. The rate of sulfur adsorption is based on the amount of fuel consumed and the amount of oil consumed. The total sulfur storage module is in communication with the sulfur adsorption module. The total sulfur storage module determines the total amount of sulfur stored based on the rate of sulfur adsorption.

Abstract: The present invention provides an exhaust emission purifying apparatus having a liquid level measuring device in which, when a liquid level (measured liquid level) measured by a liquid level indicator of a sensor is equal to or than a measurable lower limit, the measured liquid level is output. On the other hand, when the measured liquid level is less than the measurable lower limit, the liquid level estimated based on a consumption of a liquid reducing agent or its precursor in a reducing agent tank and a tank cross-sectional area is output. The liquid level of the liquid reducing agent or its precursor is estimated in a range in which the liquid level may not be accurately measured due to the presence of a concentration meter, whereby the liquid level can be measured over a wide range.

Abstract: [Problem] To provide a reducing agent supply apparatus that can quickly melt urea aqueous solution solidified in a reducing agent injection valve to allow early start of the injection control of urea aqueous solution, a method for controlling the reducing agent supply apparatus, and an exhaust gas purification apparatus.

Abstract: In order to relief a sudden change of engine sound during the transition to recovery control of a particulate removing filter or during returning from the recovery control, a system of treating exhaust gas of an engine includes an exhaust-gas particulate removing filter in an exhaust path, closes down the opening of an inlet throttle valve or an exhaust throttle valve to a recovery opening smaller than a normal opening during recovery of the particulate removing filter, and returns the opening from the recovery opening to the normal opening after the recovery of the particulate removing filter. The opening of the inlet throttle valve or the exhaust throttle valve during the closing process from the normal opening to the recovery opening and during the returning process from the recovery opening to the normal opening is changed at a gradually decreasing or gradually increasing rate of change of the opening.

Abstract: A fitting portion structure of a device for post-processing exhaust gas in an agricultural operation vehicle is provided. The device is arranged in parallel to the lengthwise direction of an engine at the upper portion of an exhaust manifold of the engine, an exhaust gas inlet is coupled to the exhaust manifold or to a turbo charger and a flange pipe which are located at the lower portion of the exhaust gas inlet, and a fixing means is arranged between the engine and the device to support the load of the device. The fixing means includes a frontal bracket arranged between a cylinder head on the front side of the engine and a DPF canning of the device, and a rear bracket arranged between a cylinder head on the rear side of the engine and a flange coupling portion of the flange pipe.

Abstract: An exhaust treatment fluid system includes a tank housing for storing an exhaust treatment fluid. A suction tube includes a first end positioned within the housing. A first sensor is positioned within the tank housing for determining at least one of a fluid level and a concentration of the exhaust treatment fluid. A skirt is positioned in the tank to peripherally surround the first sensor.

Abstract: A particulate filter device monitoring system for an engine includes a regeneration mode trigger module configured to set a regeneration request based on soot accumulation in the particulate filter device, a regeneration control module configured to control regeneration of the particulate filter device, and a soot out model module including a soot out model configured to calculate changes in soot out rate during prolonged engine idling periods.

Abstract: A mounting assembly for an injector is located in a curved portion of an exhaust line having an exhaust flow from an upstream end to a downstream end. The mounting assembly includes an indent extending at least partially into the exhaust line curved portion and disposed in the exhaust flow. The downstream wall has an interior surface oriented to substantially face the exhaust line downstream end. A recess extends from the downstream wall in a direction away from the exhaust line downstream end, and a recess aperture is formed in the recess and configured to fluidly communicate with the injector. The recess reduces the amount of exhaust heat reaching the injector tip.

Abstract: Systems and method are disclosed in which a portion of an exhaust gas stream is received into an exhaust outlet flow path downstream of a first selective catalytic reduction (SCR) catalyst and upstream of a second SCR catalyst. The removed portion is treated with a diagnostic SCR catalyst element and an NH3 concentration composition of the treated removed portion is determined. The NH3 concentration is used to control injection of reductant upstream of the first SCR catalyst.

Abstract: Disclosed is a method for preventing fuel freezing in a postprocessing burner system with a burner 14 upstream of a particulate filter 12 (exhaust purification member) incorporated in an exhaust pipe. Fuel is fed from a fuel tank 16 served also for a diesel engine 1 (engine) to the burner 14 through a feed pipe 17, and excess fuel is returned to the fuel tank 16 through a return pipe 18. The fuel is periodically circulated between the burner 14 and the fuel tank 16 through the feed and return pipes 17 and 18 under a condition of ambient air temperature during vehicle travel being at or below a predetermined temperature.