Abstract: A hydraulic system for a machine includes an implement pump, a valve, and an implement valve subsystem. The implement pump includes a load sensing control, and the valve controls the flow of hydraulic fluid to the implement pump. The implement valve subsystem includes one or more implement control subsystems to control movement of an implement. The valve is an electrohydraulic proportional relief valve and includes a solenoid configured to adjust the pressure of hydraulic fluid delivered to the implement pump proportionally to a current delivered through the solenoid.

Abstract: A process for detecting reductant deposits includes accessing data indicative of signal output from a radiofrequency sensor positioned proximate a decomposition reactor tube; comparing the data indicative of signal output from the radiofrequency sensor to a deposit formation threshold; and activating a deposit mitigation process responsive to the data indicative of signal output from the radiofrequency sensor exceeding the deposit formation threshold.

Abstract: Systems and methods provide deceleration fuel cutoff regeneration of a gas particulate filter. A powertrain system includes an exhaust system containing the gas particulate filter, which is configured to collect particulate matter from an exhaust gas stream of the powertrain system. A temperature sensor is configured to monitor a temperature of the gas particulate filter. A loading monitor, such as a sensor and/or a model, is configured to provide a loading input of particulate loading of the gas particulate filter. At least one controller is configured to: determine, by comparing the loading input to stored values, whether the gas particulate filter requires the regeneration; effect a warmup of the gas particulate filter when the determination shows the gas particulate filter requires the regeneration; and initiate the regeneration when a value received from the temperature sensor meets a minimum threshold level.

Abstract: An aftertreatment system for treating constituents of an exhaust gas produced by an engine, comprising: a housing; a selective catalytic reduction (SCR) system disposed within the housing; a reductant injector disposed on a sidewall of the housing upstream of the SCR system and configured to insert a reductant into the exhaust gas; and a vortex generator disposed in the housing, the vortex generator comprising at least one deflector disposed on a surface within the housing, the at least one deflector configured to generate vortices in a portion of the exhaust gas flow flowing over the at least one deflector such that the portion of the exhaust gas remains attached to the surface at a downstream location of the surface.

Abstract: Methods and system are provided to heat a catalyst of an after-treatment system for a vehicle. The after-treatment system comprises a heating module having a plurality of heating elements. Each of the plurality of heating elements is independently operable to provide thermal energy to the catalyst of the after-treatment system. One or more of the heating elements of the heating module are selectively operated to provide heat to the catalyst based on an operational parameter of the after-treatment system.

Abstract: The invention relates in particular to a method for adjusting the loading (19) of a particulate filter (9) and to an assembly designed to carry out the method, wherein the exhaust gas aftertreatment unit (8) comprises at least two SCR systems (11, 12) and a particulate filter (9), a first operating material amount being introduced in a metered manner before the first SCR system (11), and a second operating material amount being introduced in a metered manner before the second SCR system (12), the operating material being convertible into a reducing agent.

Abstract: Various embodiments include a method of ascertaining the oxygen load of a catalytic converter disposed in an exhaust tract of an internal combustion engine with an exhaust gas sensor is disposed downstream of the catalytic converter comprising: generating a signal using the exhaust gas sensor indicating a proportion of nitrogen oxide and/or ammonia in the exhaust gas; and ascertaining the oxygen load of the catalytic converter at least partly on the basis of the signal from the exhaust gas sensor.

Abstract: A method of controlling an adjustable exhaust system for a marine engine includes receiving a vessel location of a marine vessel having an adjustable exhaust system and identifying a noise constraint based on the vessel location. A current exhaust mode of the adjustable exhaust system is identified. A determination is then made regarding whether the exhaust system is exceeding the noise constraint based on the current exhaust mode. If the noise constraint is exceeded, an instruction is generated to adjust the adjustable exhaust system to comply with the noise constraint.

Abstract: In a method for operating an internal combustion engine of a motor vehicle having an automatic transmission, a torque generated by the internal combustion engine is reduced as a function of an operating state of a drive train of the motor vehicle. As a function of an excess of combustion air occurring when the torque is reduced and supplied to the internal combustion engine by an exhaust gas turbocharger, fuel combustion efficiency in at least one combustion chamber of the internal combustion engine, which is related to the torque generated by the combustion chamber, is reduced. The combustion efficiency is reduced by at least one late post-injection of fuel into the at least one combustion chamber of the internal combustion engine.

Abstract: The invention relates to a wall-flow filter as a particle filter with catalytically active coatings in the channels which are closed in a gas-tight manner at the opposing closed ends of the channels A at the first end, wherein the inlet region of the filter is additionally supplied with a dry powder-gas aerosol which contains metal compounds with a high melting point (such as the metal oxides Al2O3, SiO2, FeO2, TiO2, ZnO2, etc. for example) and which is to simultaneously improve the catalytic activity and the degree of filtration efficiency with respect to the exhaust gas back-pressure.

Abstract: A heating system includes a plurality of heater elements, a plurality of switches connected to the plurality of heater elements, a set of predetermined performance information including heater information specific for each heater element, at least one temperature sensor measuring temperature of at least one heater element from among the plurality of heater elements, and a heater control unit in communication with the temperature sensor(s). The heater control unit controls the heater elements differently, via the switches, based on the heater information and the measured temperature from the temperature sensor(s).

Abstract: Systems and methods for controlling a regeneration process of catalyst(s) are disclosed. The method includes receiving, via Kalman filter, initial estimation from a previous instance of time. The initial estimation includes one or more first estimated inside temperature(s) and/or first estimated outlet temperature of A/T catalyst. An output from a simulation model may be generated to calculate a mean and covariance. Sensor measurement covariance may be compared against the mean and covariance of the output to update Kalman filter gain and process covariance. A weighted average may be calculated between sensor measurements and mean of the output to generate a second estimation for the next instance of time, wherein weight is based on Kalman filter gain. The second estimation includes one or more second estimated inside temperature(s) and/or second estimated outlet temperature of A/T catalyst to control the mass flow rate in diesel engine via a closed loop control system.

Abstract: A deterioration determination apparatus is usable with an ammonia sensor that includes an ammonia element portion that includes, a solid electrolyte, an ammonia electrode, and a reference electrode. The deterioration determining apparatus compares a first evaluation value and a second evaluation value, and determines whether deterioration has occurred in the ammonia element portion of the ammonia sensor at an evaluation time or subsequent to the evaluation time. The first evaluation value is based on a first sensor current obtained when a DC voltage is applied between the ammonia electrode and the reference electrode of the ammonia element portion at an initial time that is during an initial use period of the ammonia sensor. The second evaluation value is based on a second sensor current obtained when the DC voltage is applied between the ammonia electrode and the reference electrode subsequent to the initial period of use of the ammonia sensor.

Abstract: An aftertreatment system (100) includes a decomposition chamber (108), a reductant pump (120), a first dosing module (110), a second dosing module (112), and a controller (133). The first dosing module (110) is coupled to the decomposition chamber (108) and configured to receive reductant from the reductant pump (120). The second dosing module (112) is coupled to the decomposition chamber (108) and configured to receive reductant from the reductant pump (120) independent of the first dosing module (110). The controller (133) is communicatively coupled to the first dosing module (110) and the second dosing module (112). The controller (133) is configured to independently control a first volumetric flow rate of reductant provided from the first dosing module (110) into the decomposition chamber (108) and a second volumetric flow rate of reductant provided from the second dosing module (112) into the decomposition chamber (108).

Abstract: A method for controlling an internal combustion engine with a catalytic converter for exhaust-gas aftertreatment, comprising specification of a target fill level profile is proposed, which fluctuates between an upper threshold value and a lower threshold value, of at least one exhaust-gas component that can be stored in the catalytic converter, determination of a present fill level of the at least one exhaust-gas component in the catalytic converter on the basis of a theoretical catalytic converter model, and control of the internal combustion engine so as to generate an exhaust gas with a target concentration of the at least one exhaust-gas component such that a deviation between the present fill level and the present target fill level in accordance with the target fill level profile is reduced. A processing unit and a computer program product for carrying out a method of said type, and a vehicle which is configured for carrying out the method, are likewise proposed.

Abstract: A system and method for self-adjusting engine performance parameters in response to fuel quality variations that includes an exhaust sensor for measuring a level of carbon dioxide present in an exhaust manifold, at least one of a knock sensor and a cylinder pressure transducer for determining a location of peak pressure and a centroid, respectively, a controller in communication with the exhaust sensor and the at least one of the knock sensor and the cylinder pressure transducer, the controller correlating a methane number of the fuel used by the engine to a brake specific carbon dioxide value calculated using the level of carbon dioxide measured by the exhaust sensor and the at least one of the centroid and the location of peak pressure, and an adjusting mechanism, wherein the adjusting mechanism adjusts an engine performance parameter based on the determined methane number.

Abstract: An exhaust aftertreatment system for use with over-the-road vehicle is disclosed. The exhaust aftertreatment system includes a reducing agent mixer with a mixing can and a flash-boil doser configured to inject heated and pressurized reducing agent into the mixing can for distribution throughout exhaust gases passed through the mixing can.

Abstract: The present disclosure describes methods for evaluating quality of DEF dosed to an EAS including a close coupled SCR unit a downstream SCR unit. A NOx conversion efficiency of the close coupled SCR unit and a NOx conversion efficiency of the downstream SCR unit are used to evaluate quality of DEF. In some embodiments, the NOx conversion efficiency of close coupled SCR unit is used to evaluate quality of DEF. Operation of an EAS using the results of the evaluation of quality of DEF are described.

Abstract: A method for controlling an engine in response to an increase in a load on the engine is disclosed. The engine includes a cylinder with a piston slidably disposed therein between a top dead center position and a bottom dead center position. The cylinder and the piston define a combustion chamber. The method includes initiating a first injection event and a second injection event. The first injection event includes introducing a first predetermined quantity of fuel into the combustion chamber at least 5 degrees before the piston reaches the top dead center position. The second injection event includes introducing a second predetermined quantity of fuel into the combustion chamber not earlier than 30 degrees after the piston moves away from the top dead center position.

Abstract: The present disclosure relates to an apparatus for adding a liquid reducing agent, preferably an aqueous urea solution, to the exhaust gas from an internal combustion engine. The apparatus according to the present disclosure comprises a dosing device arranged in an exhaust line of the internal combustion engine, which device is designed to generate a reducing agent spray by means of an injector. The apparatus furthermore comprises a swirl generator device, designed as a hollow body, preferably a hollow cylinder, about a longitudinal axis, which has a first end facing the injector and a second end facing away from the injector.

Abstract: The exhaust purification device of an internal combustion engine comprises a catalyst 20 arranged in an exhaust passage and able to store oxygen; and an air-fuel ratio control device configured to control an air-fuel ratio of inflowing exhaust gas flowing into the catalyst. The air-fuel ratio control device is configured to perform a distribution forming control controlling the air-fuel ratio of the inflowing exhaust gas so that in the catalyst, a first region with an oxygen storage amount of equal to or greater than a predetermined value and a second region with an oxygen storage amount of less than the predetermined value are alternately formed along an axial direction of the catalyst. The total number of the first region and the second region formed by the distribution forming control is equal to or greater than three.

Abstract: The present invention relates to a gas heat pump system. The gas heat pump system, according to one embodiment of the present invention, comprises: an air conditioning module comprising a compressor, an outdoor heat exchanger, an expansion apparatus, an indoor heat exchanger and a refrigerant line; and an engine module comprising an engine for combusting a mixture of fuel and air, thereby providing power for driving the compressor.

Abstract: A method for diagnosing a plurality of lambda sensors which are arranged upstream of an exhaust gas catalytic converter in a plurality of exhaust gas banks of a multi-flow exhaust gas system of an internal combustion engine. An opposite lambda offset of the lambda sensors is identified (54) when a difference (?T) between a measured exhaust gas temperature (Tmeasure) and a modeled exhaust gas temperature (Tmod) downstream of the exhaust gas catalytic converter overshoots a threshold value (S).

Abstract: A crawled vehicle comprising: an internal combustion engine; an engine compartment wherein the internal combustion engine is housed; an air inlet opening to catch air from the outside of the crawled vehicle; a first channel, for cold air, connected and fed by the air inlet opening with air coming from outside the crawled vehicle; a second channel to be fed with hot air coming from the internal combustion engine; a third channel for air, coupled to the internal combustion engine to feed the internal combustion engine with air; an air filter arranged along the third channel and upstream of the internal combustion engine; a connection element connected to the first channel, to the second channel and third channel; and an air adjusting device to adjust the air temperature in the third channel and comprising a shutter coupled to the first channel and/or to the second channel and/or to the connection element; and a control device controlling a position of the shutter to adjust the temperature of the air entering th

Abstract: A vehicle 100 comprises a fuel tank for storing fuel, a fueling port for supplying the fuel tank with fuel, a CO2 recovery device configured to recover CO2, a CO2 collection port for collecting CO2 from the CO2 recovery device, and a single openable lid configured to cover both the fueling port and the CO2 collection port.

Abstract: A method of operating a particulate matter sensor having a pair of spaced apart electrodes and a heater includes accumulating particulate matter on the sensor, thereby changing resistance between the pair of spaced apart electrodes. The particulate matter sensor includes a sensing cycle that includes a deadband zone, followed by an active zone, which is followed by a regeneration zone in which the heater is operated to elevate the temperature of the particulate matter sensor to a first predetermined temperature for a first predetermined time in order to oxidize the particulate matter accumulated on the particulate matter sensor. The method also includes interrupting the sensing cycle with a modified regeneration zone which is either higher in temperature or length than the regeneration zone.

Abstract: A method for adapting modeled reaction kinetics of a reaction taking place in a catalytic converter, with model-based fill level feedback control. The method includes specifying a setpoint value for at least one fill level of at least one exhaust-gas component that can be stored in the catalytic converter; calculating at least one fill level of the catalytic converter using a signal of an exhaust-gas sensor upstream of the catalytic converter and using a catalytic converter model with at least one storage capacity and reaction kinetics of the at least one reaction taking place in the catalytic converter; setting an air-fuel mixture such that the calculated fill level approximates the specified setpoint value; ascertaining a difference between a signal of the exhaust-gas sensor upstream of the catalytic converter and a signal of an exhaust-gas sensor downstream of the catalytic converter; and deactivating the fill-level-dependent setting of the air-fuel mixture.

Abstract: An engine controller controlling an engine including an occlusion reduction catalyst in an exhaust device includes a fuel injection controller that controls a fuel injection amount of an injector, an EGR controller that controls an EGR device, a sulfur purge determiner that determines whether sulfur purging of the catalyst is to be performed, and a sulfur purge controller that executes sulfur purge control if the sulfur purging is performed. The sulfur purge control involves performing a fuel injection to achieve a rich air-fuel ratio at an inlet of the catalyst and prohibiting the exhaust-gas introduction. The sulfur purge controller executes sulfur-purge standby control when a sulfur-purge standby condition is satisfied, and resumes the sulfur purge control when the condition becomes non-satisfied after starting the sulfur-purge standby control.

Abstract: A system for determining an exhaust flow rate of an exhaust gas produced by an engine comprises a first sensor configured to measure an amount of NOx gases in the exhaust gas. A controller is communicatively coupled to the first sensor. The controller is configured to receive a first sensor signal from the first sensor. The controller is also configured to receive a fuel rate signal corresponding to a rate of fuel consumption by the engine. The controller is configured to determine an air-fuel ratio from the first sensor signal and determine a fuel rate from the fuel rate signal. Furthermore, the controller is configured to determine the exhaust flow rate from the air-fuel ratio and the fuel rate.

Abstract: An exhaust system for an internal combustion engine includes an exhaust pipe, and a vane mixer attached to an upstream pipe end of the exhaust pipe and including a fluid injector mount, and a fluid injection side port in the injector mount and fluidly connected to an exhaust passage in the vane mixer. The vane mixer further includes a vane extending across the exhaust passage and dividing the exhaust passage into a major flow area and a minor flow area. The minor flow area is in overlapping angular alignment, circumferentially around a longitudinal exhaust passage axis, with the fluid injection side port.

Abstract: Methods for producing alcohols by deriving carbon dioxide from air or another dilute source, and supplying water, which is converted to hydrogen and oxygen, with subsequent conversion of the carbon dioxide and hydrogen into alcohols is disclosed. The method includes, but is not limited to including, a direct air capture system carbon dioxide, a water electrolysis unit powered by electricity, a hydrogenation reactor to convert carbon dioxide and hydrogen gases into alcohols, and a distillation system to separate alcohols or a single constituent alcohol from other hydrogenation products. Optionally, these methods may include systems capture water from air, if water or hydrogen is not available on-site, and the distillation system may use propylene glycol as an extraction solvent. This process can be used for on-site production of feedstock alcohols such as ethanol at high purity, and many other applications.

Abstract: A method for reducing sensor noise in an automobile vehicle NOx sensor offset diagnostic includes: connecting an exhaust system to an engine of an automobile vehicle; sensing a condition of the exhaust system using at least one NOx sensor; identifying when the at least one NOx sensor is at a low noise condition; and running a diagnostic to identify conditions of the at least one NOx sensor. The method further includes selecting one of the low noise condition as the engine in an after-run condition or as the engine in an engine idle condition.

Abstract: Embodiments are directed towards controlling uncontrolled release of ammonia from an engine of a vehicle. An estimated status of the engine is determined prior to an event, such as an estimated load on the engine prior to the vehicle going up a hill. A predictive model of uncontrolled ammonia release is generated for the estimated status. At least one engine-related countermeasure is selected based on the predictive model. If the predictive model of uncontrolled ammonia release with the selected countermeasures satisfies a threshold condition, then the selected engine-related countermeasure is employed.

Abstract: Methods comprising: arranging a binary lambda sensor and a second sensor downstream of a catalytic converter; when the engine is run for the first time, using an initial lambda setpoint for closed-loop control; measuring the NH3 value in the exhaust gas; simultaneously measuring the signal from the binary lambda sensor; if the NH3 value lies above a first threshold value, reducing the lambda setpoint value of the binary lambda signal until the NH3 value lies below the first threshold value or the binary sensor signal lies below a second threshold value; recording the corresponding binary sensor signal when the NH3 value passes the first threshold value, for binary sensor signal setpoint value adaptation, as Vbinary-left; and calculating the real lambda setpoint value.

Abstract: A DEF system for use with an internal combustion engine, the DEF system including a primary flowpath extending between a first inlet and a first outlet, where the first inlet is open to and configured to receive exhaust gasses from the internal combustion engine. The DEF system also includes a secondary flowpath including a second inlet open to the primary flowpath downstream of the first inlet and upstream of the first outlet, a second outlet open to the primary flowpath downstream of the secondary inlet and upstream of the first outlet, and an injector assembly configured to inject DEF into the secondary flowpath.

Abstract: An exhaust gas system for an internal combustion engine of a single-track vehicle can be arranged on an exhaust gas outlet of a cylinder head. A first lambda probe close to the cylinder head is provided in the exhaust gas system and is arranged before an exhaust gas cleaning system in the flow direction of an exhaust gas. A second lambda probe is provided in the exhaust gas system after the exhaust gas cleaning system in the flow direction of the exhaust gas. The second lambda probe is arranged at a maximum distance away from the exhaust gas cleaning system equal to four times the diameter of the exhaust gas cleaning system. As a result of the design, the lambda probe is arranged in the non-visible region of the single-track vehicle, while simultaneously examining the quality of the exhaust gas cleaning.

Abstract: A water intrusion cover for a sensor probe in an exhaust system is provided. The water intrusion cover includes a main body portion having a substantially cylindrical shape, an inlet opening, and an outlet opening. The inlet opening and outlet opening are formed in a sidewall of the main body portion and are fluidly coupled to form a continuous flow path defined by a surface that, in a cross-section perpendicular to an axis of the main body portion, curves from the inlet opening to the outlet opening. The water intrusion cover further includes a shoulder portion having a substantially cylindrical shape. The main body portion and the shoulder portion collectively define a central passage for the sensor probe.

Abstract: A dosing composition and method for treatment of reductant urea solutions utilizing organometallic catalyst precursors in combination with one or more surfactants to promote decomposition of relatively high molecular weight deposits which deposits may otherwise reduce selective catalytic reduction efficiency.

Abstract: A state estimation apparatus includes: a rate calculating configured to calculate, based on both a flow rate and an air-fuel ratio of exhaust gas flowing into an oxygen storage catalyst, a rate of change in an oxygen storage amount in the oxygen storage catalyst; a limit calculating unit configured to calculate a limit rate which is a limit value for the rate of change; and a storage-amount updating unit configured to update, based on the rate of change and the limit rate, an estimated value of the oxygen storage amount. Moreover, the storage-amount updating unit is further configured to: update, when the rate of change does not exceed the limit rate, the estimated value based on the rate of change; and update, when the rate of change exceeds the limit rate, the estimated value based on the limit rate.

Abstract: A hybrid vehicle with an engine and a rotary machine each coupled to a drive wheel in a power transmittable manner, comprises: an electronic control device that makes the rotary machine output a starting-time compensation torque to compensate a drop in a drive torque caused in a starting process of the engine in addition to a running torque when the engine is started while the vehicle is in a running state in which the drive torque is generated by the rotary machine and the engine is in a stopped state. The electronic control device starts the engine such that a starting-time inertia torque that is generated according to starting of the engine and causes the drop in the drive torque is made smaller when a torque margin of the rotary machine which is applied to the starting-time compensation torque is relatively small than when the torque margin is relatively large.

Abstract: A reuse evaluation system is a system that performs an evaluation to reuse a catalyst in a state where the catalyst that purifies an exhaust gas of an engine of a vehicle 1 is mounted on the vehicle. The reuse evaluation system includes a deterioration estimator that estimates a degree of deterioration of the catalyst based on an operating state of the vehicle, a reuse setting unit that sets a range of the degree of deterioration of the catalyst as a reuse range of the catalyst according to a usage of reuse of the catalyst, and a reuse determining unit that determines that the catalyst is reusable in the reuse usages when the degree of deterioration of the catalyst estimated by the deterioration estimator is within the reuse range set by the reuse setting unit.

Abstract: A prime mover for a lightweight vehicle comprising an internal combustion engine, a starter motor integrally integrated with the internal combustion engine, and a housing for the prime mover. The prime mover additionally comprises a Hall Effect sensor and an prime mover control module structured and operable to communicate with the Hall Effect sensor, determine when operation of the internal combustion engine should cease, and upon the determination that operation of the internal combustion engine should cease, utilize the communication from the Hall Effect sensor to stop the internal combustion engine such that a piston of the internal combustion engine is positioned at between 15° and 25° after bottom-dead-center.

Abstract: The present invention relates to a catalyst which comprises a carrier substrate of length L, which extends between a first end face a and a second end face b, and catalytically active material zones A, B and C of different composition, wherein—material zone A comprises palladium or palladium and platinum with a weight ratio of Pd:Pt>1, and cerium oxide, —material zone B comprises platinum or platinum and palladium with a weight ratio of Pt:Pd>1, and cerium oxide and/or cerium/zirconium mixed oxide, and—material zone C comprises platinum or platinum and palladium with a weight ratio of Pt:Pd>1, and a carrier oxide, and wherein—material zone B is arranged above material zone A, and—material zone C is arranged above material zone B, and, starting from the second end face b of the carrier substrate, extends over a length of up to 60% of the length L. The invention also relates to a catalyst arrangement containing said catalyst.

Abstract: A gas heat pump system is disclosed. The gas heat pump system includes an air conditioning module including a compressor, an outdoor heat exchanger, an expansion device, an indoor heat exchanger and a refrigerant pipe, an engine module including an engine configured to burn a mixture of fuel and air and provide power for operation of the compressor, a cooling module including a cooling water pump configured to generate flow of cooling water for cooling the engine and a cooling water pipe connected to the cooling water pump to guide flow of cooling water. The engine module includes a mixer configured to discharge the mixture of air and fuel to the engine, a supercharger disposed between the mixer and the engine to compress the mixture discharged from the mixer and discharge the mixture to the engine, and an adjuster disposed between the supercharger and the engine to adjust an amount of compressed mixture supplied to the engine.

Abstract: Disclosed is a method for control of an activation of a fluid sensitive sensor of an exhaust treatment system arranged for treating an exhaust stream, which includes: determining an exhaust temperature and an exhaust mass flow for the exhaust stream; determining if there is liquid fluid present in the exhaust stream at the fluid sensitive sensor, respectively, based on: 1) an elimination time function, wherein the elimination time function is based on the determined exhaust temperature and the determined exhaust mass flow; and 2) a corresponding lengths of a time period needed to eliminate a predetermined amount of liquid fluid from the exhaust stream; and controlling an activation of said fluid sensitive sensor based on the determination of if there is liquid fluid present in the exhaust treatment system at the fluid sensitive sensor.

Abstract: A diagnostic system (10) is provided and includes a sensor (24) disposed downstream from an exhaust gas aftertreatment system. Also included in the diagnostic system (10) is a central diagnostic unit (35) configured to diagnose a condensation condition associated with the sensor (24) for mitigating a sensor failure due to water condensation on the sensor (24), the central diagnostic unit (35) performing the diagnosis on the condensation condition based on water storage and release information related to a component of the exhaust gas aftertreatment system. The sensor (24) is activated based on the water storage and release information.

Abstract: A method, system, and apparatus relating to operating an internal combustion engine include steps or features for determining a performance threshold of a particulate filter disposed in an exhaust gas flow of the engine having a set time interval between regeneration events of the particulate filter; determining a rate at which the particulate filter is reaching the performance threshold; and controlling an exhaust gas characteristic to control the rate so that the performance threshold is reached at or just before an end of the time interval. In an embodiment, there are steps or features for interpreting a filter condition of the particulate filter; determining a particulate matter load rate of the filter as a function of the condition; determining a limit of an exhaust gas characteristic based on the load rate; and controlling engine operation to control the exhaust gas characteristic to satisfy the limit.

Abstract: Methods and systems are provided for an engine of a vehicle. In one example, a method includes activating a heater in response to an engine start request when a catalyst temperature is less than a threshold temperature.

Abstract: The present disclosure relates to a hydrocarbon dosing system to control dosing of diesel fuel into an exhaust upstream of a vehicle's oxidation catalyst (VOC). The system 100 includes separate inlets (102,104) to allow inflow of a first fluid and the second fluid into the system, and an outlet 116. The first fluid configured to facilitate purging of the second fluid into the VOC through the outlet 116. The system 100 incorporates multiple valves (106, 108, 112) and pressure sensor 114 to control dosing and purging of the fluids. The system 100 provides an intrinsic non-return valve mechanism to restrict the flow of the first fluid into a fluid path of the second fluid, and vice versa. The system 100 provides intrinsic pressure relief mechanism for controlled release of pressure from system 100. The system 100 includes additional optional check valves 208 and filter screens 206 for redundancy purposes.

Abstract: The invention concerns a method for controlling regeneration of an exhaust gas aftertreatment system (7, 8) of an internal combustion engine (4) arranged on a vehicle (1), wherein the vehicle (1) is provided with a control system configured to control the regeneration in at least a first regeneration strategy mode comprising a first set of predetermined actions to be taken for controlling initialization and performance of regeneration processes.