Abstract: An engine starting method is disclosed. In one example, engine operation is adjusted to reduce catalyst light off time. Exhaust temperatures may be increased until a threshold engine temperature is reached.

Abstract: At least one chemical heating measure, which causes an increase in the catalytic converter temperature essentially by introducing into the exhaust gas channel additional chemical energy in excess of energy provided at an initial engine operating point, is combined with at least one thermal heating measure, which causes an increase in the catalytic converter temperature essentially by introducing into the exhaust gas channel additional thermal energy in excess of energy provided at an initial engine operating point, so that a major fraction of the chemical energy is introduced temporally before a major fraction of the thermal energy is introduced.

Abstract: The present invention is intended to suppress a decrease in insulation resistance between electrodes and a case in an electrically heated catalyst (EHC). The EHC according to the present invention is provided with a heat generation element that is electrically energized to generate heat thereby to heat a catalyst, a case that receives a heat generation element therein, an insulating member that is arranged between the heat generation element and the case for insulating electricity, electrodes that are connected to the heat generation element through an electrode chamber which is a space located between an inner wall surface of the case and an outer peripheral surface of the heat generation element, and a communication passage that makes communication between a portion of an exhaust system of the internal combustion engine, which is other than a portion thereof in which the electrically heated catalyst is arranged, and the electrode chamber.

Abstract: Provided is an exhaust gas combustion device which is capable of early prevention of clogging, and also a power generator including the device. An exhaust gas combustion device of the present invention includes: a DPF; a sensor which measures the pressure of exhaust gas to be introduced into the DPF; a sensor which measures the pressure of exhaust gas purified by the DPF; and a controller which receives outputs from both sensors and calculates a pressure difference. When the pressure difference is equal to or larger than a preset threshold, the heater is supplied with power from a power generating unit to thereby heat exhaust gas. Accordingly, PM accumulated inside the DPF is combusted and removed, preventing excessive clogging of the DPF even during light-load operation.

Abstract: A system and method according to which exhaust is directed from a stationary exhaust source and through a burner, and a combustible fluid is vented from at least one combustible fluid source other than the stationary exhaust source. The combustible fluid is captured and directed to flow from the combustible fluid source and towards the burner, and at least air is mixed the captured combustible fluid to form a mixture. The mixture is introduced into the burner and burned therein to thereby pre-heat the exhaust flowing therethrough. The pre-heated exhaust contacts a catalyst.

Abstract: An electrically-heated catalytic converter comprises a catalyst support which produces heat when electric current is applied, a holding mat made of an electrical insulating material, the holding mat being provided so as to cover an outer circumference of the catalyst support, and a case which houses the catalyst support and holds the catalyst support via the holding mat. The catalytic converter treats gas flowing in the case by a catalyst supported on the catalyst support. The holding mat has a water-absorbing property. An insulation layer made of an electrical insulating material is provided between the case and the holding mat.

Abstract: An exhaust treatment system comprises M three-way catalysts and N electrically heated catalysts (EHCs). The M three-way catalysts are arranged to receive exhaust gas output by an engine of a hybrid vehicle. M is an integer greater than one. The N EHCs are arranged to receive the exhaust gas and provide radiant heat to the M three-way catalysts when the N EHCs are powered. N is an integer greater than one.

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

Abstract: An NOx purification system having a selective reduction catalyst, adapted so that even when no ammonia or urea is supplied, NOx is converted to ammonia by a first catalyst including a lean NOx catalyst or a ternary catalyst at ammonia formation control and the ammonia is adsorbed by the selective reduction catalyst disposed downstream and so that by the adsorbed ammonia, there is carried out reduction purification of the NOx contained in the exhaust gas when no ammonia formation control is performed by the selective reduction catalyst. At the ammonia formation control, an ammonia adsorption target amount being a target value of ammonia adsorbed by the selective reduction catalyst is computed, and the ammonia formation control is carried out only when a cumulative value of an ammonia formation amount formed by the first catalyst at the ammonia formation control is under the ammonia adsorption target amount. Consequently, ammonia is stably supplied in just proportion to the selective reduction catalyst.

Abstract: A system for controlling the temperature of an exhaust stream includes a main exhaust passageway adapted to receive the exhaust stream from an engine. A bypass passage includes an inlet and an outlet in communication with the main exhaust passageway. The outlet is located downstream from the inlet. A burner is positioned within the bypass passage for treating the exhaust passing through the bypass passage. A valve is positioned within the main exhaust passageway downstream from the inlet and upstream from the outlet. The valve is operable to vary the exhaust flow through the burner. A controller selectively operates the burner to maintain a desired exhaust temperature downstream of the outlet.

Abstract: An exhaust gas control apparatus includes an oxidation catalyst, a compact oxidation catalyst having a smaller cross section than that of an engine exhaust passage, a fuel supply valve, a glow plug, and an electronic control unit. The control modes for the exhaust gas control apparatus include a first control mode where the fuel is supplied from the fuel supply valve, heated by the glow plug, and ignited, a second control mode where the fuel is supplied from the fuel supply valve, and heated by the glow plug but is not ignited, and a third control mode where the fuel is supplied from the fuel supply valve and the glow plug does not provide heating. The electronic control unit selects the first or third control mode in the operation region where ignition is possible, and selects the second or third control mode in the operation region where ignition is not possible.

Abstract: A system includes a particulate matter (PM) filter that includes multiple zones. An electrical heater includes heater segments that are associated with respective ones of the zones. The electrical heater is arranged upstream from and proximate with the PM filter. A post-fuel injection system injects fuel into at least one of a cylinder of an engine and an exhaust system. A control module is configured to operate in a first mode that includes activating the electrical heater to heat exhaust of the engine. The control module is also configured to operate in a second mode that includes activating the post-injection system to heat the exhaust. The control module selectively operates in at least one of the first mode and the second mode.

Abstract: A vehicle includes an internal combustion engine operatively disposed therein. The engine generates exhaust gases. The vehicle further includes an alternator operatively connected to the engine. The alternator produces DC power. An ultracapacitor is operatively connected to the alternator to receive electrical energy therefrom. The vehicle still further includes an exhaust gas treatment system operatively connected to the engine to receive exhaust gases therefrom. The exhaust gas treatment system includes an electrically heated catalyst (EHC) device electrically connected to the ultracapacitor to selectively heat a catalytic exhaust system component. The ultracapacitor stores energy converted by the alternator from vehicle kinetic energy and releases the stored energy to heat the EHC.

Abstract: The present invention relates to an exhaust gas treatment unit for an exhaust system of a combustion engine, in particular of a motor vehicle, includes a housing, a plurality of exhaust gas treatment elements, which are arranged in the housing and through which a parallel flow is possible. The unit further includes an outlet nozzle, which penetrates a side face of the housing, and an outlet space disposed in the housing, whereby the outlet of at least one of the exhaust gas treatment elements opens into the outlet space. The rigidity and/or effectiveness of the exhaust gas treatment unit can be improved by means of a funnel body disposed in the outlet space, and comprising a funnel surface which is permeable to exhaust gas. The funnel body connects an outlet end of one of the exhaust gas treatment elements with the outlet nozzle.

Abstract: A flammable-gas led-out pipe (5) has a terminal end portion (5a) disposed in an exhaust-gas route (7) and a metal cylinder (10) is arranged at the terminal end portion (5a) of the flammable-gas led-out pipe (5). An oxidation catalyst (8) is disposed within the metal cylinder (10). On an upstream side of the oxidation catalyst (8), an air-supply passage (12) is opened to provide an outlet (12a) and the flammable gas (4) merges with supplied air (13). The flammable gas (4) is burnt with the oxidation catalyst (8) to produce catalyst-combustion heat, which is radiated from an outer peripheral surface of the metal cylinder (10) into the exhaust gas (9) in the exhaust-gas route (7) and the exhaust gas (9) heated by this heat-radiation is mixed with the flammable gas (4) that has passed through the oxidation catalyst (8).

Abstract: An ECU executes a program including: detecting a catalyst temperature T upon start of an engine; outputting an instruction signal to drive a power module, which is disposed in contact with an outer surface of a catalyst and is high in heat resistance, with a low efficiency upon determination that the catalyst temperature need be increased; and outputting a valve opening instruction signal to a switch valve in a cooling system in such a manner as not to allow a coolant to flow in a coolant pipeline interposed between the power module and an electric part low in heat resistance.

Abstract: It is an object of the present invention to provide a black smoke exhaust purification apparatus capable of equalizing temperature of a particulate filter and facilitating maintenance thereof. The black smoke exhaust purification apparatus is arranged in series therein with an oxidation catalyst and a particulate filter wherein an inlet for exhaust gas is disposed between the oxidation catalyst and the particulate filter, and wherein an exhaust gas passage is extended from the inlet portion through the oxidation catalyst so as to be connected to an upstream space of the oxidation catalyst.

Abstract: An exhaust gas purifying apparatus for an internal combustion engine is provided to desorb predetermined components contained in exhaust gas from an adsorption device for adsorbing the components and to purify the desorbed components, even during the stop of the internal combustion engine. A main exhaust passage and a bypass passage bypassing the main exhaust passage are provided. An exhaust switching valve is capable of switching a flow target into the exhaust gas flows between the main exhaust passage and the bypass passage. An adsorbent for adsorbing the predetermined components is provided in the bypass passage. An underfloor catalyst including a catalyst with a heater is provided at a downstream side of the bypass passage in the main exhaust passage. A pump and a heater are provided in an air supply passage which branches from the bypass passage at an upstream portion of the adsorbent.

Abstract: A temperature control system comprises a temperature determination module, a temperature correction module, a temperature control module, and an updating module. The temperature determination module determines a desired outlet temperature for an oxidation catalyst (OC) that is located upstream of a particulate filter (PF) in an exhaust system. The temperature correction module determines a temperature correction from a plurality of temperature corrections. The temperature control module controls an outlet temperature of the OC based on the desired outlet temperature and the temperature correction. The updating module selectively updates at least one of the plurality of temperature corrections when an engine speed and an engine load are within respective predetermined ranges.

Abstract: An internal combustion engine exhaust gas cleaning apparatus is basically provided with a NOx trapping catalytic converter, a sulfur poisoning amount estimating section and a sulfur poisoning removal section. The NOx trapping catalytic converter is arranged in an exhaust passage to trap NOx contained in an exhaust gas flowing through the exhaust passage when an air-fuel ratio of the exhaust gas is lean and to release trapped NOx when an air-fuel ratio of the exhaust gas is rich. The sulfur poisoning amount estimating section estimates an estimated sulfur poisoning amount of sulfur poisoning of the NOx trapping catalytic converter based on a fuel consumption amount and an oil consumption amount. The sulfur poisoning removal section raises a temperature of the NOx trapping catalytic converter to a sulfur poisoning removal temperature based on the estimated sulfur poisoning amount to remove sulfur poisoning from the NOx trapping catalytic converter.

Abstract: A hybrid vehicle emission control method may include operating the hybrid vehicle in a first mode during which a combustion engine is off and an electric motor propels the hybrid vehicle. An electrically heated selective catalytic reduction catalyst (EHSCR) may be energized during the first mode. The vehicle may be operated in a second mode after the first mode during which the engine propels the hybrid vehicle.

Abstract: An exhaust treatment system associated with a power source is disclosed. The exhaust treatment system may have a filter located to remove particulate matter from an exhaust flow of the power source. The exhaust treatment system may further have a heat source located to elevate the temperature of the exhaust flow. The exhaust treatment system may also have a first sensor and a second sensor. The exhaust treatment system may further have a controller in communication with the heat source, the first sensor, and the second sensor. The controller may be configured to receive a particulate matter load value and a power source load value and activate the heat source when the particulate matter load value is above a particulate matter load threshold value and the power source load value is below a power source load threshold value that is indicative of the exhaust flow being within an exhaust flow range.

Abstract: In a hybrid vehicle, control is executed to operate an engine with fuel injection being performed, when an unexecuted percentage of catalyst degradation suppression control is equal to or greater than a threshold value of the unexecuted percentage, when a power storage percentage of a battery is equal to or greater than a threshold value of the power storage percentage and the battery is charging, and also when a vehicle speed is equal to or greater than a threshold value of the vehicle speed and a cumulative air amount is equal to or greater than a threshold value of the cumulative air amount, when a catalyst temperature is less than a first threshold temperature and equal to or greater than a second threshold temperature, when the catalyst temperature is equal to or greater than the first threshold temperature, when there is a braking request while the engine is operating.

Abstract: An after-treatment device for an automotive engine includes a substrate having a thermoelectric generation element disposed in an interior volume thereof. The substrate has a first end, a second end, and an outermost lateral dimension that defines an interior volume, and is configured to flow engine exhaust gas from the first end to the second end such that the flowing exhaust gas is in thermal contact with the thermoelectric generation element.

Abstract: A method for operating a motor vehicle which has a drive and an exhaust system with at least one controllable heating device to be placed in contact with exhaust gas, includes at least the following steps: (a) detecting at least one operating parameter of the exhaust system, (b) determining at least one influential variable of the heating device, (c) comparing the at least one influential variable with a target parameter of the exhaust system, and (d) activating the heating device in such a way that the operating parameter reaches the target parameter. A motor vehicle having a drive and an exhaust system is also provided.

Abstract: Various embodiments of an apparatus, system, and method are disclosed for controlling engine exhaust temperature. For example, according to one exemplary embodiment, an apparatus for controlling the temperature of engine output exhaust of an internal combustion engine during a regeneration event on a particulate matter filter includes a regeneration module and an exhaust temperature manager. The regeneration module is configured to determine a desired diesel oxidation catalyst (DOC) inlet exhaust temperature during a regeneration event. The exhaust temperature manager is configured to determine an air-to-fuel ratio strategy for achieving a desired air-to-fuel ratio within the combustion chamber for producing an engine output exhaust temperature approximately equal to the desired DOC inlet exhaust temperature. The air-to-fuel ratio strategy includes a first mode and a second mode. The first mode includes varying the position of an air intake throttle valve while maintaining a VGT device in a fixed position.

Abstract: A temperature increasing degree of the catalytic outflow exhaust temperature at the time the exhaust air-fuel ratio is changed to the rich side is found in respect to each of a plurality of the catalytic inflow exhaust temperatures. A grade (S) of the temperature increasing degree is found based upon the inflow exhaust temperature and the temperature increasing degree to determine degradation of the catalyst based upon at least one of a maximum value (Smax) of the grade and the inflow exhaust temperature (Tinmax) corresponding to the maximum value. An accurate catalyst degradation diagnosis can be carried out since not only the temperature increasing degree but also the inflow exhaust temperature are taken into account.

Abstract: An internal combustion engine wherein three-way catalysts are arranged in an exhaust passage of a first cylinder group and an exhaust passage of a second cylinder group and a common NOx storage catalyst is arranged downstream of the three-way catalysts. When the NOx storage catalyst should be raised in temperature, the air-fuel ratio of a part of the cylinders in each cylinder group is made rich and the air-fuel ratio of a part of the cylinders in each cylinder group is made lean to raise the NOx storage catalyst in temperature by the heat of oxidation reaction at the three-way catalysts.

Abstract: Several embodiments of high-efficiency catalytic converters and associated systems and methods are disclosed. In one embodiment, a catalytic converter for treating a flow of exhaust gas comprising a reaction chamber, a heating enclosure enclosing at least a portion of the reaction chamber, and an optional coolant channel encasing the heating enclosure. The reaction chamber can have a first end section through which the exhaust gas flows into the reaction chamber and a second end section from which the exhaust gas exits the reaction chamber. The heating enclosure is configured to contain heated gas along the exterior of the reaction chamber, and the optional coolant channel is configured to contain a flow of coolant around the heating enclosure. The catalytic converter can further include a catalytic element in the reaction chamber.

Abstract: The present invention has an object to provide a catalyst temperature control device that can properly control a temperature of a catalyst which influences an emission performance of an internal combustion engine. A plurality of temperature measurement points are disposed continuously or dispersedly at least in a flow path direction inside the catalyst. The temperature measurement points can include not only actual measurement points where temperature sensors are disposed, but also virtual measurement points where temperature sensors are not disposed. A control point is selected from the plurality of temperature measurement points in accordance with operation conditions of the internal combustion engine, and a target value of the temperature of the catalyst is set. As a temperature at the selected control point, when the control point is the actual measurement point, an actual measurement value by the temperature sensor can be used.

Abstract: A vehicle control device applied to a vehicle including an internal combustion engine and an electrically heated catalyst which is warmed by applying a current, and includes a catalyst carrier supporting a catalyst and a carrier retention unit that retains the catalyst carrier and has an electrical insulation property. The vehicle control device includes an insulation resistance determination unit which determines whether or not an insulation resistance of the carrier retention unit decreases to a value equal to or lower than a predetermined value, and an applying current prohibition unit which prohibits applying the current to the electrically heated catalyst when the insulation resistance determination unit determines that the insulation resistance decreases to the value equal to or lower than the predetermined value.

Abstract: An exhaust gas control apparatus applied to an internal combustion engine including plural cylinders and a turbocharger, wherein an exhaust passage includes first and second branch passages. The first branch passage connects exhaust sides of cylinders #1, #4 and a turbine, and includes a starter catalyst; the second branch passage connects exhaust sides of cylinders #2, #3 and the turbine, and communicates with the first branch passage upstream of the starter catalyst. The exhaust gas control apparatus includes an exhaust gas switching valve disposed at a communication part, through which the first and second branch passages are in communication, and is switchable between an introducing position at which exhaust gas is introduced into the starter catalyst from the cylinders #2, #3 and a block position at which introduction thereof is blocked. An ECU switches the exhaust gas switching valve position based on the operating condition of the internal combustion engine.

Abstract: An exhaust gas treatment system is provided having an internal combustion engine, an exhaust gas conduit, a passive selective catalyst reduction (SCR) device, a heated SCR device, and a control module. The exhaust gas conduit is in fluid communication with and is configured to receive an exhaust gas from the internal combustion engine. The passive SCR device is in fluid communication with the exhaust gas conduit and is configured to receive the exhaust gas. The passive SCR includes a passive SCR temperature profile. The heated SCR device is in fluid communication with the exhaust gas conduit and is configured to receive the exhaust gas. The heated SCR device is located upstream of the passive SCR. The heated SCR is selectively activated to produce heat. The control module is in communication with the heated SCR and the engine and includes a control logic for determining the passive SCR temperature profile.

Abstract: A system for a vehicle, includes a conversion temperature determination module and a heating control module. The conversion temperature determination module generates a methane conversion temperature corresponding to a predetermined methane conversion efficiency. The heating control module selectively applies power to a substrate of an electrically heated catalyst (EHC) based on a temperature of the EHC and the methane conversion temperature. The EHC includes at least one catalyst that reacts with methane in exhaust output from an engine.

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: The present invention provides an internal combustion engine exhaust purification apparatus includes a filter configured to collect particulate matter contained in exhaust gas, a selective catalytic reduction converter provided downstream of the filter to reduce nitrogen oxide contained, an oxidation catalyst converter with an adsorption function provided upstream of the converter to temporarily adsorb the nitrogen oxide contained in the exhaust gas, a burner configured to increase the temperature of the exhaust gas flowing into the filter, the selective catalytic reduction converter, and the oxidation catalyst converter to set the temperature of the filter to at least a predetermined recovery temperature, thus recovering the filter, and an ECU configured to inhibit the burner from being started when the burner is otherwise to be started but if the selective catalytic reduction converter has not been activated.

Abstract: A particulate matter sensor includes a first detection filter provided in an exhaust gas flow passage and capable of collecting particle matter. A second detection filter is provided on a downstream side of the first detection filter in the exhaust gas flow passage and capable of collecting the particle matter. A first differential pressure detection unit is configured to detect a first differential pressure between pressures of an upstream side and the downstream side of the first detection filter. A second differential pressure detection unit is configured to detect a second differential pressure between pressures of an upstream side and a downstream side of the second detection filter. A particle matter amount detection unit is configured to detect an amount of particle matter based on a detection result of the first differential pressure detection unit and a detection result of the second differential pressure detection unit.

Abstract: The invention relates to a method for the voltage-controlled performance regulation of the heating of an exhaust-gas probe in the exhaust system of an internal combustion engine. The aim of the invention is to provide a method in which the operating temperature of the probe is achieved in the shortest possible time without damage to the probe. To achieve this, the heating voltage during the heating phase of the probe is rapidly brought up to a high temperature in a start phase in relation to a subsequent phase, or a dramatic leap in temperature is achieved, preferably up to the full operating voltage and the heating voltage is then continuously or quasi-continuously reduced.

Abstract: A method and system for assessing the health status of a patient, such as the asthma status of a patient, provides an asthma status score and a confidence rating indicative of the score's reliability using continuous real-time data. In some embodiments, the assessment comprises a multidimensional analysis in which asthma status scores and respective confidence ratings are generated for multiple individual asthma health dimensions as well as a summary asthma health dimension indicative of overall asthma health. In some embodiments, the individual dimensions include an environmental trigger dimension based on sensor-based environmental data, a physiological burden dimension based on sensor-based physiological data, a medication adherence dimension based on patient diary data and a perceived symptom dimension based on patient diary data.

Abstract: An internal combustion engine system includes: an engine with a plurality of pistons; a variable load driven by rotary power from the engine, the load including one or more of a pump, an air conditioner; and a fan; aftertreatment equipment to control exhaust emission from the engine; a sensor to provide a sensor signal corresponding to temperature of exhaust from the engine; and a controller coupled to the sensor and operable to regulate a regeneration operation of one or more components of the aftertreatment equipment. The controller responds to the sensor signal to generate one or more control signals to adjust the variable load to increase loading of the engine and correspondingly raise the temperature of the exhaust for the regeneration operation.

Abstract: An exhaust treatment device for a combustion system is disclosed. The exhaust treatment device may have a housing, and an injector disposed within the housing to deliver an injection fluid into a flow of exhaust. The exhaust treatment device may also have at least one fluid supply passage that is disposed within the housing and being in fluid communication with the injector to supply the injector with injection fluid. The exhaust treatment device may further have at least one purge passage disposed within the housing and in fluid communication with the injector to supply the injector with a purge fluid. The exhaust treatment device may additionally have a first valve element that is mounted to the housing and disposed at an entrance of the at least one purge passage The first valve element may be configured to provide a unidirectional flow of purge fluid to the at least one purge passage.

Abstract: In requirement of catalyst degradation control with setting of a catalyst degradation control flag Fc to 1, the braking control of the invention sets torque commands Tm1* and Tm2* of two motors and controls the operations of an engine and the two motors to shift a drive point of the engine on an optimum fuel consumption operation curve by a preset rotation speed variation Nrt1 in a specific range of rotation speed that ensures no occurrence of a misfire in the engine within an input limit Win of a battery and to ensure output of a braking torque demand Tr* to a ring gear shaft or driveshaft (steps S200 to S250). Such braking control stably lowers a rotation speed Ne of the engine to a target rotation speed Ne* and desirably enhances the fuel consumption under the catalyst degradation control.

Abstract: An engine exhaust emission purification apparatus for reducing and purifying NOx in the exhaust emission by using a liquid reducing agent having a temperature maintenance device for maintaining a temperature of at least a part of a liquid reducing agent supply system configured by an injection nozzle and piping of the injection nozzle at a temperature lower than a boiling point of a solvent of the liquid reducing agent or equal to or higher than a melting point of dissolved matter in which the liquid reducing agent existing in the liquid reducing agent supply system conducts heat exchange with the liquid reducing agent supply system thereby being maintained at a temperature lower than the boiling point of the solvent or equal to or higher than the melting point of the dissolved matter and resultantly, occurrence of precipitation of the dissolved matter due to evaporation of only the solvent in the liquid reducing agent supply system does not occur, and even if precipitation of the dissolved matter occurs, the

Abstract: A method of operating an engine control system includes generating an engine start signal, determining whether a cold start condition exists, energizing an electrically heated catalyst based on the cold start condition, determining the temperature of the electrically heated catalyst and selectively starting an engine based on the engine start signal and the electrically heated catalyst temperature.

Abstract: A burner module for burning injected reformate mixed with engine exhaust in an exhaust pipe ahead of aftertreatment devices, comprising an exhaust flow divider that creates a localized region of exhaust flow for mixture of the reformate. The amount of reformate required to produce a burnable composition in the localized area is less than what is required in the prior art to provide the same composition over the entire cross-sectional region of the exhaust pipe. An igniter is provided within the localized region. Upon ignition of the reformate, the flow of reformate may be increased to the point of a stoichiometric mixture for the entire exhaust, to produce the maximum heat for warm up. The exhaust flow divider may comprise a divider tube mounted in the exhaust pipe or may be simply a protrusion from a wall of the exhaust pipe.

Abstract: An exhaust pipe through which an exhaust port of an internal combustion engine and a catalyst for purifying an exhaust gas of the internal combustion engine are connected to each other includes a porous portion that is provided on at least a part of an inner peripheral face of the exhaust pipe. A thermal conductivity that the porous portion exhibits in a high temperature state where a temperature of the exhaust gas is as high as it is required to radiate a heat of the exhaust gas through the exhaust pipe is at least ten times higher than a thermal conductivity that the porous portion exhibits in a low temperature state where the temperature of the exhaust gas is as low as it is required to warm the catalyst up.

Abstract: A catalyst is provided in an exhaust passage of an engine and an evaporating section of a heat recovery device is provided upstream of the catalyst in the exhaust passage. An ECU performs an operation for compulsorily oscillating an air-fuel ratio between a lean state and a rich state as compared to a theoretical air-fuel ratio when temperature of the catalyst reaches temperature at which the catalyst has a predetermined purification capacity after the engine is started. The ECU restricts a flow of a working fluid in the heat recovery device until the temperature of the catalyst reaches the temperature at which the catalyst has the predetermined purification capacity after the engine is started.

Abstract: An exhaust system that processes exhaust generated by an engine is provided. The system includes: a particulate filter (PF) that is disposed downstream of the engine and that filters particulates from the exhaust; and a grid that includes electrically resistive material that is segmented by non-conductive material into a plurality of zones and wherein the grid is applied to an exterior upstream surface of the PF.

Abstract: An emissions reduction system includes an emissions control module that selectively controls fuel injection at a lean A/F ratio based on a first temperature of a catalytic converter and that selectively turns on an electrically heated catalyst (EHC) based on the first temperature. A fuel injection module selectively injects fuel into an engine cylinder during an expansion stroke based on a second temperature of the EHC.

Abstract: The present invention relates to a heating device for exhaust gas in an internal-combustion engine, which is driven by using LPG, LNG, a volatile oil, a light oil, biodiesel or oxygenated hydrocarbon being DME, the device consisting of a catalyst reactor reformer, an exhaust gas suction section and the second fuel supply device. The exhaust gas suction section is mounted for using oxygen included in the exhaust gas. When the heating device is driven, air and fuels are supplied to the catalyst reactor and the second fuel supply device via a single tube when the heating device is heated. The present invention provides with a heating device for exhaust gas capable of securing the durability of a heating device for exhaust gas and minimizing the amount of air supplied from the outside to the combustion reforming device by excluding carbon depositions in a tube due to a prolysis of LPG, LNG, a volatile oil, a light oil, biodiesel or oxygenated hydrocarbon being DME, and a method for driving the device.