Abstract: The present invention is an exhaust mode selector system which is able to control an exhaust system, as the exhaust system changes to accommodate various driving conditions. The exhaust system includes various exhaust flow paths to configure the exhaust system for operating in a highway mode, used for when the vehicle is operating on the highway, and a city mode, used for when the vehicle is operating under city driving conditions. A controller is able to position one or more valves to various configurations to transition between city driving and highway driving. Each of the valves being configurable provides for optimization of the balance between required power, fuel economy, and noise reduction.

Abstract: An exhaust treatment system to treat exhaust gas includes a particulate filter and a pressure sensor. The particulate filter is configured to trap soot contained in exhaust gas. The pressure sensor is configured to output a pressure signal indicative of a pressure differential of the particulate filter. The exhaust treatment system further includes a soot mass module configured to determine a soot mass. The soot mass is indicative of an amount of soot stored in the particulate filter based on the pressure differential and a soot model stored in a memory device. The exhaust treatment system further includes a continuously regenerating trap (CRT) compensation module configured to generate a variable CRT threshold. The CRT compensation module selectively outputs a CRT compensation value that modifies the soot model based on comparison between the NOx flow rate and the soot mass-based variable CRT threshold.

Abstract: A method is described for reducing the nitrogen oxide levels in diesel engine exhaust gases with the aid of an exhaust gas treatment system, which includes a device for feeding ammonia and/or a compound decomposing to form ammonia, and two SCR units. An ammonia sensor is situated between the first and second SCR unit. A nitrogen oxide sensor is located in the exhaust pipe downstream from the second SCR unit. The signals of the ammonia sensor and the NOx sensor are combined in a defined manner to form the actual value of a virtual NOx/NH3 sensor, which is used as the input variable for a PI or PID controller, which regulates the quantity of reducing agent to be fed into the exhaust gas as needed.

Abstract: An air/fuel ratio controller (6) and a method that uses an upstream control loop to maintain a given optimum air/fuel ratio (?opt), whereas the optimum air/fuel ratio (?opt) is determined in the controller (6) in an downstream control loop by adding incremental offset (??) to the air/fuel ratio set-point (?SP) of an upstream control loop while monitoring a NOx sensor (10) output. The air/fuel ratio set-points (?SP) at two turning points (SP1, SP2) in the NOx sensor (10) output are used to calculate a new optimum air/fuel ratio set-point (?opt) as mean value of the air/fuel ratio set-points (?SP1, ?SP2) at the turning points (SP1, SP2).

Abstract: A power system and a method for energizing an electrically heated catalyst are provided. The system includes a battery outputting a first voltage, and a generator outputting a second voltage greater than the first voltage in response to a first signal. The system further includes a controller that generates a second signal to set a first switching device to a first operational state to apply the second voltage to the electrically heated catalyst to increase a temperature of the catalyst, if a first temperature level of the catalyst is less than a first threshold temperature level. The controller generates a third signal to induce the generator to output a third voltage, and generates a fourth signal to set a second switching device to a second operational state to apply the first voltage to the catalyst, if the first temperature level is greater than the first threshold temperature level.

Abstract: An air-fuel ratio imbalance among cylinders determining apparatus (a determining apparatus) according to an aspect of the present invention, obtains a parameter X for imbalance determination which becomes larger as a variation of an air-fuel ratio of an exhaust gas passing through a position at which the air-fuel ratio sensor is disposed becomes larger, based on an output value Vabyfs of an air-fuel ratio sensor 67. At the same time, the determining apparatus changes a target air-fuel ratio which is a target value of an air-fuel ratio of a mixture supplied to an engine to “an air-fuel ratio (a target rich air-fuel ratio AFrich or a target lean air-fuel ratio AFlean) other than a stoichiometric air-fuel ratio” from the stoichiometric air-fuel ratio. Accordingly, the determining apparatus can obtain the parameter X for imbalance determination in a state in which a responsivity of the air-fuel ratio sensor 67 is not low.

Abstract: The invention relates to a control device of an engine, including fuel supplying means, target fuel supply amount setting means, fuel supply command value providing means, supplied air amount detection means, air-fuel ratio detection means, air-fuel ratio calculation means, exhaust gas component concentration detection means and exhaust gas component concentration calculation means.

Abstract: A method includes providing an exhaust stream for an internal combustion engine, where the exhaust stream is fluidly coupled to an aftertreatment component. The method includes optically determining an amount of an exhaust gas constituent in the exhaust stream. The method further includes modifying a model stored on a computer readable medium in response to the amount of the exhaust gas constituent. The model is an engine NOx generation model, a catalyst NOx storage model, a catalyst NOx conversion model, a catalyst NO to NO2 conversion model, a catalyst conversion efficiency model, an engine soot generation model, and/or a urea hydrolysis model.

Abstract: Methods and systems are provided for heating a catalyst during engine cold-start conditions. One example embodiment uses positive valve overlap to drive a boosted blow-through airflow through the cylinders of an engine. Fuel is injected with the blow-through airflow during the valve overlap, and also injected into engine cylinders outside the valve overlap. The catalyst is heated by the resulting exothermic reaction of the blow-through airflow with the combustion products and the injected fuel in the exhaust manifold.

Abstract: A decrease in determination accuracy on filter trouble due to a decrease in detection accuracy of a PM sensor is restricted. A filter, a selective reduction type NOx catalyst provided on a downstream of the filter, the PM sensor detecting an amount of PM on a downstream of the selective reduction type NOx catalyst, and a removal section conducting a process for removing a reducing agent attached to the PM sensor in a case where at least one of conditions is satisfied that a temperature of the selective reduction type NOx catalyst is equal to or lower than a threshold, that a temperature of the exhaust is equal to or lower than a threshold, that a flow rate of the exhaust is equal to or higher than a threshold, and that an adsorption amount of the reducing agent in the selective reduction type NOx catalyst is equal to or larger than a threshold are included.

Abstract: A power plant includes a first gas turbine engine, a second gas turbine engine, a flue gas duct, a CO2 capture system for treating flue gases from the second gas turbine engine and an exhaust system. It additionally includes at least one among a direct connection between the first gas turbine engine and the exhaust system, and a damper for on-line regulating the flue gases flow through it, a direct connection between the first gas turbine engine and the CO2 capture system, and a damper for regulating the flue gases flow through it, a supply of fresh oxygen containing fluid for the second gas turbine engine.

Abstract: A secondary air supply system includes an electric air pump that supplies secondary air to a location upstream of an exhaust gas purification catalyst arranged in an exhaust passage; a control valve that opens/closes a secondary air supply passage; a pressure detector that detects a pressure between the pump and the control valve; and a control unit that detects a first pressure in a first operating state where the control valve is closed, and detects a second pressure in a second operating state where the control valve is open, using the pressure detector. The control unit corrects at least one of the first and second pressures based on a first driving voltage for the pump in the first operating state and a second driving voltage in the second operating state, and estimates a secondary air flow rate based on the first and second pressures after correction.

Abstract: A temperature sensor includes temperature detecting means and at least one of a catalyst and an adsorbent applied to the surface of the temperature detecting means. At least one of the catalyst and the adsorbent catalyzes an exothermic reaction of a reactant in gas on the temperature detecting means. A temperature that is increased by the exothermic reaction is detected by the temperature detecting means. The catalytic efficiency for the exothermic reaction of at least one of the catalyst and the adsorbent is reduced by sulfur poisoning. The temperature sensor is disposed upstream of an exhaust purification system. Accordingly, it is determined that the temperature sensor is subjected to sulfur poisoning if the temperature detected by the temperature sensor is below a prescribed temperature.

Abstract: Systems, apparatus, and methods for selectively, preferentially, and/or actively removing or trapping SO3 from un-oxidized sulfur constituents in an exhaust gas effluent produced by an internal combustion engine are disclosed. Also disclosed are embodiments for regenerating an SO3 trap.

Abstract: A method for the calculation of the NO2 content at the inlet of a selective catalytic reduction—SCR—device (22) of an exhaust system (4) with: an exhaust pipe (10); a tank for a reducing agent and injection elements (18); a first sensor (20) for measuring the concentration of nitrogen oxides upstream of the SCR; and a second sensor (24) for measuring the concentration of nitrogen oxides downstream of the SCR, includes the following stages: halting the injection of reducing agent; measuring the concentration of nitrogen oxides upstream and downstream of the SCR during a period of time; calculating the amount of NO2 accumulated in the SCR during the period of time; and determining the NO2 content upstream of the SCR from the calculated amount of NO2 accumulated per unit of time.

Abstract: In a method and a device for adapting the injection agent supply for an emission control system, the following steps are carried out: a) setting of a agent pressure target value in the line upstream of the pump in relation to the ambient pressure; b) opening of the pressure relief valve for a predetermined time t; c) determining the pressure difference between the target and the injection agent pressure, caused in step b), immediately after step b); d) setting a target value for the agent pressure in the line downstream of the pump in relation to the exhaust gas pressure in the system; e) opening of the injector for a predetermined time t; f) determining the pressure difference between the target and the agent pressure, caused in step e), immediately after step e); g) comparing the pressure differences from steps c) and f); and h) optional adaptation of the injector opening time.

Abstract: The capacity of a platinum-containing diesel oxidation catalyst (DOC) to simultaneously convert NO to NO2, CO to carbon dioxide, and remaining hydrocarbons to carbon dioxide and water in the exhaust system of a vehicle diesel engine may be evaluated and diagnosed using measured DOC exhaust inlet temperatures and outlet temperatures at a relatively high exhaust temperature and, soon thereafter, at a relatively low exhaust inlet temperature. Values of the platinum-containing DOC exotherms at the high and low DOC inlet temperatures are found to provide a basis for evaluation of both NO conversion and the HC and CO conversion capabilities of the DOC. The process may be repeated as the catalyzed DOC conversion efficiency changes with use. The practice may also be used to evaluate the performance of oxidation catalysts used in a like way in treating the exhaust from a lean-burn gasoline engine.

Abstract: The present disclosure relates to a fuel injector for a diesel particulate filter, and more particularly, to a fuel injector for a diesel particulate filter which is capable of combusting and removing particulate matters included in the exhaust gas by injecting fuel into an exhaust gas discharge line. The present disclosure can prevent fuel from being frozen when fuel is intended to be injected into an exhaust gas line during the winter season or in a cold region, thereby allowing DPF regeneration to be smoothly carried out.

Abstract: A system and method for providing energy to auto systems such as systems after-treating exhaust. Energy may be received from a solar energy source electrically connected to an after-treatment system. At least some of the energy from the solar energy source may be provided to the after-treatment system to purify exhaust from an engine. A control module may provide at least some of the energy from the solar energy source to a heater, for example, to initiate heating the after-treatment system prior to starting the engine. The heater may heat the after-treatment to temperatures within a predetermined temperature range associated with optimal efficiency for the after-treatment system.

Abstract: A diesel engine includes an exhaust system having a particulate filter made from a porous material having a mean pore diameter of from 5 ?m to 40 ?m, a porosity of at least 40% and a bulk volumetric heat capacity of at least 0.50 J cm?3 K?1 at 500° C. The filter includes a diesel oxidation catalyst (DOC) located in a first catalyst zone on the front end of the filter and at least one catalyst zone located downstream thereof, for oxidizing carbon monoxide, hydrocarbons and nitrogen monoxide. The engine includes engine management means, in use, to provide continuously or intermittently an exhaust gas having sufficient nitrogen oxides or hydrocarbon and/or an exhaust gas of sufficiently high temperature to combust particulate matter. The platinum group metal (PGM) loading in the first catalyst zone is greater than the total PGM loading in the at least one downstream catalyst zone.

Abstract: A forced air-cooled engine includes a crankcase, a cylinder block, a cylinder head, a cooling fan, and a shroud arranged to cover a portion of the crankcase, the cooling fan, and a portion of the cylinder block and a portion of the cylinder head. Fins are provided at least in a region of the cylinder block covered by the shroud. The shroud includes a facing wall portion that faces the fins. An exhaust opening is provided between the facing wall portion and the cylinder block, and opens away from the cooling fan.

Abstract: The present invention relates to the exhaust gas guiding of a road milling machine. The road milling machine comprises an internal combustion engine, an engine air inlet, via which the engine air flows from the outside to the internal combustion engine, an engine air outlet, via which the engine air is conducted out of the road milling machine, a device for generating a flow movement of the engine air from the engine air inlet to the engine air outlet, and an exhaust system which is implemented for discharging the exhaust gases occurring during operation of the internal combustion engine from the internal combustion engine out of the road milling machine, having an exhaust gas outlet. The engine air is used to cool the exhaust gas.

Abstract: A computerized method includes receiving signals from a particulate matter sensor relating to an amount of particulates at a point in time within a time period in a diesel engine exhaust stream, calculating one or more running statistical parameters relating to a particle mass in the diesel engine exhaust stream, determining an upper control limit for the amount of particulates, receiving a threshold for an allowable amount of particulates in the diesel engine exhaust stream, comparing the threshold to one or more of (a) a current instantaneous particulate reading from the particulate matter sensor and (b) the upper control limit for the amount of particulates, and generating an output signal when one or more of the current instantaneous particulate reading and the upper control limit for the amount of particulates are above the threshold.

Abstract: A method for forming a lubricant layer on the surface of a glass and a method for manufacturing a glass using the same prevents scratches from occurring at the surface of a glass and decreases corrosion of glass manufacturing equipment. The method for manufacturing a glass includes forming a glass, supplying SO2 gas and a SO2 gas oxidation catalyst to the glass under an oxidation environment to form a lubricant layer at the lower surface of the glass, and annealing the glass.

Abstract: Various systems and methods are provided for supplying heat to a passenger compartment during a filter regeneration event. In one example, a first phase of a filter regeneration event is initiated for a filter in an internal combustion engine based on one or more parameters, with heat produced by the engine then supplied to a heater core during the first phase, and the first phase extended if heating is requested for a duration based on ambient temperature. The engine may be operated at reduced efficiency during the filter regeneration event, and in some embodiments, the method may further include injecting an additional amount of fuel during a second phase of the filter regeneration event after the first phase ends to cause soot combustion in the filter.

Abstract: An NOx sensor diagnosis apparatus, which diagnoses an NOx sensor provided in an exhaust pipe to detect a concentration of NOx in exhaust gas, includes a calculation value operating unit to acquire a calculation value of the concentration of NOx in the exhaust gas based on an actuation state of an engine, an error determining unit to determine that the sensor is erroneous when a difference between the calculation value and the detection value of the concentration of NOx detected by the sensor is larger than a determination threshold value, and a determination threshold value setting unit to set the determination threshold value based on a temperature of water for cooling the engine, an atmospheric pressure, and an outdoor temperature.

Abstract: A control apparatus for an internal combustion engine configured to control the internal combustion engine is provided with: a first F/B controlling device configured to perform first F/B control in which an air-fuel ratio of a gas flowing into a three way catalyst converges to a target air-fuel ratio, on the basis of an output value of an air-fuel ratio sensor; a second F/B controlling device configured to perform second F/B control in which the target air-fuel ratio or the output value of the air-fuel ratio sensor is corrected such that an output voltage value of an oxygen concentration sensor matches a target output value; a learning device configured to learn an output characteristic of the oxygen concentration sensor; and a target value setting device configured to set the target output value according to a learning value of the output characteristic.

Abstract: A method and a device for operating a sensor is provided in an exhaust gas system of an internal combustion engine for determining the emissions contained in an exhaust gas flow, in particular, of nitrogen oxides, ammonia, oxygen and/or unburnt carbon, with the exhaust gas flow acting on the sensor during measurement phases. Between the measurement phases, the sensor is at least largely kept free from the exhaust gas flow, wherein the duration and/or the frequency of the measurement phases can be set as a function of operating parameters of the internal combustion engine and/or of the exhaust gas regulation system. A measurement space which surrounds the sensor is exposed to a pressurized flushing gas immediately after a measurement phase, as a result of which the exhaust gas present in the measurement space is displaced out of the measurement space into the exhaust gas flow.

Abstract: A system and method is provided for enhancing the performance of an SCR device, particularly by routinely reducing the amount of reductant deposits accumulated in an exhaust gas system, when the reductant is injected at a reduced temperature. The system may include an engine, an exhaust gas system, an SCR device, an injection device, and a controller configured to execute the present method. The controller may be configured to select an initial injection rate and an initial injection temperature for the reductant; estimate the amount of accumulated reductant deposits present within the exhaust gas system; compare the amount of accumulated reductant deposits to a threshold amount of reductant deposits allowable in the exhaust gas system; and initiate a reductant deposit burn-off mode when the amount of accumulated reductant deposits is greater than the threshold amount of reductant deposits allowable in the exhaust gas system.

Abstract: An extruded honeycomb catalyst for nitrogen oxide reduction according to the selective catalytic reduction (SCR) method in exhaust gases from motor vehicles includes an extruded active carrier in honeycomb form having a first SCR catalytically active component and with a plurality of channels through which the exhaust gas flows during operation, and a washcoat coating having a second SCR catalytically active component being applied to the extruded body, wherein the first SCR catalytically active component and the second SCR catalytically active component are each independently one of: (i) vanadium catalyst with vanadium as catalytically active component; (ii) mixed-oxide catalyst with one or more oxides, in particular those of transition metals or lanthanides as catalytically active component; and (iii) an Fe- or a Cu-zeolite catalyst.

Abstract: A method is provided for predicting NOx loading at a DeNOx catalyst by which a NOx amount actually stored in the DeNOx catalyst can be precisely predicted and to an exhaust system which controls a regeneration timing of the DeNOx catalyst and amount of a reducing agent which is injected by using the method. The method may include calculating mass flow of NOx stored at the DeNOx catalyst, calculating mass flow of NOx thermally released from the DeNOx catalyst, calculating mass flow of NOx chemically released from the DeNOx catalyst, and calculating NOx amount actually stored at the DeNOx catalyst by using the mass flow of NOx stored at the DeNOx catalyst, the mass flow of NOx thermally released from the DeNOx catalyst, and the mass flow of NOx chemically released from the DeNOx catalyst.

Abstract: An oxygen sensor system for a vehicle includes a pump control module, a correction module, and a fuel control module. While fueling of an engine is cut off, the pump control module selectively turns ON an air pump that pumps ambient air into an exhaust system of the vehicle upstream of a universal exhaust gas oxygen (UEGO) sensor and a catalyst. The correction module receives an output of the UEGO sensor, selectively determines a correction for the output of the UEGO sensor when the air pump is ON and the fuel is cut off, and adjusts the output of the UEGO sensor based on the correction to produce a corrected output. The fuel control module, during fueling of the engine, selectively controls the fueling based on the corrected output.

Abstract: An exhaust-gas sampler is adapted to couple into an exhaust conduit and to sample a constituent of an engine exhaust flowing therein. The sampler comprises an envelope having upstream and downstream surfaces joined by a curved side surface. The upstream and downstream surfaces are each tangent to a plane substantially normal to a central axis of the exhaust conduit. A series of inlets are formed in the upstream surface, and an outlet is formed in the curved side surface. A sensor responsive to a level of the constituent in the exhaust is coupled in the envelope, at the peripheral region of the conduit.

Abstract: Various injector cooling structures and related engine systems and methods are provided. In one example, an injector cooling structure includes a cooling channel defined by a cooling jacket of a turbine. A cooling bore is provided at least partially within the cooling jacket, with the cooling bore configured to receive a pintle of an injector. The cooling channel is configured to circulate coolant for cooling the injector.

Abstract: Method for the regeneration of a carbon particulate filter 5 in a combustion engine arrangement 1 with a combustion engine 2 and an exhaust-gas aftertreatment device 3, wherein the combustion engine arrangement 1 is switched to a heating operation for increasing the exhaust-gas temperature, which is suitable, to heat the exhaust-gas to a carbon particulate ignition temperature. By means of the operation conditions of the combustion engine arrangement 1, the necessary energy input per carbon particulate mass (specific energy input) is determined and monitored for the regeneration. When falling below a threshold value for the specific energy input, the heating operation for the regeneration of the carbon particulate filter 5 is started.

Abstract: A heating module (1) for an exhaust-gas purification system connected to the outlet of an internal combustion engine comprises a catalytic burner, with an HC injector (14) and with an oxidation catalytic converter (12) positioned downstream of the HC injector (14) in the flow direction of the exhaust gas, for supplying thermal energy to an exhaust-gas purification unit of the exhaust-gas purification system. It is provided here that the heating module (1) has a main section (2), a secondary section (3) which comprises the catalytic burner (12, 14), and a device (4, 5) for controlling the exhaust-gas mass flow flowing through the secondary section (3). In a first embodiment, the main section (2) has, in the inlet region or the heating module (1), an overflow pipe portion (6) which has overflow openings (7), between which overflow diverting chambers (8) is situated, parallel to the main section (2) of the heating module (1), the secondary section portion (11) with the oxidation catalytic converter (12).

Abstract: Embodiments for injecting air into exhaust ports of an engine are provided. In one example, a multi-cylinder engine method comprises combusting a rich air-fuel mixture, injecting air into a first cylinder's exhaust port and not into a second cylinder's exhaust port during the first cylinder's exhaust stroke, and injecting air into the second cylinder's exhaust port and not into the first cylinder's exhaust port during the second cylinder's exhaust stroke. In this way, injection into each exhaust port may be timed with exhaust release into each exhaust port.

Abstract: A method is provided for detecting urea deposits in an exhaust line of an automotive vehicle and includes determination if an exhaust gas's temperature is reached, if the result of determination is positive, stoppage of urea injection, and determination of the quantity of NOx in the exhaust gases on the outlet of the selective catalytic reduction system. A comparison is performed between the quantity of NOx determined on the outlet of the selective catalytic reduction system and a theoretical quantity or a measured quantity of NOx produced by the internal combustion engine. If the comparison shows that the quantities are different, it is considered that urea deposits are present in the exhaust line. A vehicle is also disclosed.

Abstract: A method of monitoring catalyst performance may comprise applying a set of parameter readings for a given sample to a support vector machine to generate a classification output, clustering the set of parameter readings to reduce a number of support vectors, computing a total fuel mass following a deceleration fuel shut-off event and an exhaust gas oxygen sensor switch and indicating catalyst degradation based on the total fuel mass.

Abstract: An engine air system for charge flow temperature estimation includes a charge air cooler outlet temperature sensor configured to provide a first temperature signal, an exhaust gas recirculation outlet temperature sensor configured to provide a second temperature signal, and a control module configured to receive the first temperature signal and the second temperature signal. The control module includes a charge flow temperature estimation module configured to determine an the estimated charge flow temperature at an intake manifold temperature sensing position based on a combination of the first temperature signal multiplied by an estimated fresh air fraction and the second temperature signal multiplied by an exhaust gas recirculation fraction.

Abstract: A system and a method of diagnosing a secondary air injection apparatus may include an intake line supplying air to an engine, an exhaust line exhausting exhaust gas, a secondary air injection (SAI) line branching off at a branch point of the intake line and being joined to the exhaust line at a joining point of the exhaust line, a first pressure sensor mounted at the intake line to detect pressure or amount of intake air flowing through the intake line, a catalytic converter, a first oxygen sensor mounted at the exhaust line, an SAI pump mounted at the SAI line and pumping the air flowing through the intake line to the SAI line, an SAI valve mounted at the SAI line and selectively communicating the SAI line with the exhaust line, and a control portion controlling the SAI pump and the SAI valve to perform catalyst heating.

Abstract: An exhaust gas control apparatus for an internal combustion engine includes: a catalyst that is provided in an exhaust system of an internal combustion engine; a HC adsorption member that is provided in the exhaust system at a position downstream of the catalyst, and that has a function of adsorbing hydrocarbon in exhaust gas; a secondary air supply device that supplies secondary air to the exhaust system at a portion upstream of the catalyst; a supply prohibition unit that prohibits supply of the secondary air when the internal combustion engine is started; and a supply start time control unit that controls the time when supply of the secondary air is started after the internal combustion engine is started based on the amount of hydrocarbon discharged from the internal combustion engine or a value correlated with the amount of hydrocarbon discharged from the internal combustion engine.

Abstract: In one exemplary embodiment of the invention, a method for controlling regeneration for an exhaust system of an internal combustion engine, wherein the exhaust system includes a particulate filter is provided, where the method includes determining a mass flow rate of oxygen received from the internal combustion engine, determining a particulate mass within the particulate filter, determining a desired particulate burn rate based on the mass flow rate of oxygen and the particulate mass and determining a current particulate burn rate. The method also includes determining a correction value based on the desired particulate burn rate and the current particulate burn rate, determining a temperature set point for exhaust gas entering the particulate filter based on the correction value, an engine speed and an engine load and communicating a signal, from a controller, to control a parameter for a regeneration system based on the determined temperature set point.

Abstract: A fuel vapor processing device may include a casing having an adsorption chamber defined therein, an adsorption material disposed within the adsorption chamber, a heating device capable of heating the adsorption material, and a passage member communicating between the adsorption chamber and the atmosphere. The passage member defines a flow space facing to an outer circumferential surface of the casing, so that heat can be transmitted between the adsorption chamber and the flow space.

Abstract: A method for responding to conditions detected in an on-board diagnostic unit of a motor vehicle and signaling degradation of a component of the motor vehicle. The method includes providing a first response if the conditions signal degradation of the component due to tampering, and providing a second response if the conditions signal degradation of the component not due to tampering.

Abstract: Methods and systems are provided for identifying and indicating degradation of an engine cylinder spark plug. In response to a cylinder misfire event during selected engine operating conditions, followed by an occurrence of a threshold number and/or rate of pre-ignition events in the same cylinder, a controller may determine that the spark plug is degraded. The controller may limit combustion in the cylinder in response to the degradation. Additionally, cylinder pre-ignition mitigating steps may be taken.

Abstract: An air-fuel ratio control apparatus of the present invention comprises an inverse direction spike introducing section and an inverse direction spike interval setting section. The inverse direction spike introducing section introduces, while an air-fuel ratio correction required by an output of a downstream air-fuel ratio sensor is being carried out, an inverse direction spike which is an air-fuel ratio spike to temporarily change an air-fuel ratio of an exhaust gas toward a direction opposite to a direction of the air-fuel ratio correction with respect to a target control air-fuel ratio. The inverse direction spike interval setting section sets, based on an operating state of an internal combustion engine system, an inverse direction spike interval which is an interval between two of the inverse direction spikes next to each other in time.

Abstract: A system includes an internal combustion engine producing exhaust gases as a byproduct of operation and an aftertreatment system that treats the exhaust gases. The system further includes a controller that is structured to functionally execute operations to enhance the temperature of the aftertreatment system. The controller includes an operating condition monitoring module that interprets a temperature value at a position upstream of a catalyst positioned in the aftertreatment system. The controller further includes an operating condition management module that interprets a threshold temperature value, and an engine management module that provides an engine operation command to continue engine operation in response to the temperature value being at least equal to the threshold temperature value.

Abstract: The invention discloses a catalyst for purifying exhaust gas apparatus having a Three-way Catalyst (TWC) superior in purification performance of, particularly, NOx, among carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx), in exhaust gas discharged from a gasoline automobile. It is provided by a catalyst for purifying exhaust gas containing a Rhodium (Rh)-loaded porous inorganic oxide and barium sulfate (BaSO4), with loaded or not-loaded onto alumina. At least a part of Rh is present independently from Ba inside a catalyst layer, and Rh—Ba deviation rate determined from EPMA analysis is 10% to 80%. It is preferable that loaded amount of Rhodium is 0.05 g/L to 2.0 g/L, and amount of barium sulfate is 0.5 g/L to 25 g/L and 0.5 g/L to 15 g/L, in the case of being loaded or not-loaded onto alumina, respectively.

Abstract: An air intake includes an air channel for an air stream passing through the air intake into the plant, and a particle filter assembly arranged in the air channel for removing particles from an air stream passing through the air channel, the particle filter assembly including a front and a back filter unit. The front filter unit is arranged before and in series with the back filter unit such that an air stream passing through the air channel passes through the front filter unit before passing through the back filter unit. The front filter unit is removable and replaceable by a fresh front filter unit while the back filter unit remains in the air channel and while an air stream is passing through the air channel during operation of the plant. The front filter unit has at least equal efficiency and dust holding capacity as the back filter unit.