Abstract: A system, device and a method for gas treatment is provided. The gas treatment system comprises a generator, one or more corona devices and separation device disposed in sequence along an exhaust gas flow direction. The generator is driven by a gas flow to generate an alternating supplying voltage. The corona devices are electrically connected to the generator to provide the supplying voltage and generate a first electric field via corona discharge by the supplying voltage such that particulates in the gas passing the first electric field are charged. The separation device is electrically connected to the generator and generate a second electric filed via the supplying voltage to separate charged particulates from the exhaust gas flow.

Abstract: A catalyst activation method and a catalyst activation device are provided which can activate a NOx catalyst efficiently in an ensured fashion. A plurality of accessories are connected to an internal combustion engine, and a control mechanism is provided on each of the accessories for controlling a load to be exerted on the internal combustion engine by driving the corresponding accessory. Then, a temperature of a NOx catalyst is acquired, and when the acquired temperature of the NOx catalyst is lower than a catalyst activation temperature, in order to drive additionally a certain number of accessories in the plurality of accessories which correspond to the temperature difference, the controlling mechanism(s) which corresponds to the accessory(ies) to be driven additionally is controlled to drive the corresponding accessory(ies) so as to increase a load to be exerted on the internal combustion engine.

Abstract: Systems and methods for controlling a valve for directing an exhaust gas stream through an exhaust duct having a first after treatment device and a second after treatment device in an exhaust system. The method includes receiving sensor signals from a sensor coupled to the second after treatment device. The method includes processing the sensor signals to determine a temperature of the second after treatment device, and determining a position for the valve based on whether the temperature exceeds a pre-defined threshold for the temperature of the second after treatment device. The method includes outputting a control signal to move the valve to a first position in which the exhaust gas stream flows through a first portion of the first after treatment device or a second position in which the exhaust gas stream flows through a second portion of the first after treatment device based on the temperature.

Abstract: A fluid delivery device, comprising an integrated cabinet, a pump installed in the integrated cabinet, an inlet pipeline connected to the pump, and an outlet pipeline connected to the pump; the pump comprises a motor located at the bottom portion of the integrated cabinet, a pump head located at the top portion of the integrated cabinet, and a magnetic coupling portion located between the motor and the pump head; the pump head, the magnetic coupling portion and the motor are arranged in a sequence from top to bottom; and the pump head is provided with a U-shaped flow channel and a gear mechanism therein located at the bottommost portion of the flow channel. The fluid delivery device eliminates bubbles in the solution accumulated in the pump, thus ensuring a working efficiency of fluid delivery of the pump, and ensuring precise control of a delivery amount.

Abstract: The disclosure is intended to oxidize PM deposited in a filter in a suitable manner. Provision is made for a filter of wall flow type, a temperature raising unit to raise the temperature of the filter from a downstream side thereof, an exhaust gas shut-off valve, and a controller. The controller controls a flow of exhaust gas in the filter by once fully closing the exhaust gas shut-off valve and then fully opening it when the flow rate of the exhaust gas is equal to or larger than a predetermined flow rate, so as to cause PM to move to a downstream side portion in the filter in the direction of flow of exhaust gas, and carries out regeneration processing which oxidizes the PM by using the temperature raising unit after the controller has caused the PM to move to the downstream side portion of the filter.

Abstract: A muffler for an engine assembly is disclosed. This muffler is arcuately-shaped and may be configured so as to not protrude beyond an outermost perimeter of an engine assembly that uses this muffler. The muffler may include a lower chamber, an intermediate chamber, and an upper chamber that are disposed in a common stack. Exhaust inlet and outlet ports to the muffler may be located at a common end of the muffler body. The exhaust inlet port may lead into the lower chamber. Multiple exhaust outlet ports out of the upper chamber may be utilized to allow the muffler to be used with different vehicle configurations, for instance to direct exhaust out of the muffler in different directions.

Abstract: A method for evaluating an effective component content (C) of a reducing agent for engine exhaust gas processing arranged in a container (205) in which a heat transfer provision arrangement (240) is provided, including steps of: determining (s410; s420) a prevailing volume (V) and temperature (T1) of the reducing agent in the container (205); determining (s430) a prevailing temperature (T2) of the heat transfer provision arrangement (240); determining (s440) a prevailing temperature (T3) of a medium surrounding the container (205); for a predetermined time period, determining (s450) a mean temperature change rate (Tprim) for the reducing agent; and determining (s460) the effective component content (C) of the reducing agent on the basis of the above determined parameters.

Abstract: A method for monitoring an SCR injection system is disclosed. The method includes operating a pump, and measuring a first pressure drop value in the SCR injection system during actuation of a reductant injector. A second pressure drop value in the SCR injection system is measured during a further actuation of the reductant injector. It is determined to perform a deposit mitigation strategy based on the first pressure drop value and the second pressure drop value.

Abstract: The present disclosure relates to a vehicle exhaust assembly (1) for an internal combustion engine. The vehicle exhaust assembly (1) comprises an exhaust system (3) and an exhaust mounting assembly (4) for mounting the exhaust system (3) to a vehicle (2). The exhaust system (3) comprises an inlet section (5) for connection to the internal combustion engine; an intermediate section (6) connected to the inlet section (5); an outlet section (7) for exhausting gases from the internal combustion engine; and one or more exhaust decoupler (8) for decoupling the intermediate section (6) from the inlet section (5). The exhaust mounting assembly (4) comprises one or more first isolator device (20-1, 20-2) for resiliently constraining movement of the intermediate section (6) of the exhaust system (3) in a longitudinal direction; and one or more second isolator device (20-3, 20-4) for resiliently constraining movement of the outlet section (7) of the vehicle (2) exhaust in a transverse direction.

Abstract: A method, control system, and vehicle system configured to control a selective catalyst reduction (SCR) system subtracts an amount of NOx present in a tailpipe upstream of the SCR system from an amount of NOx present in the tailpipe downstream of the SCR injector. A cumulative difference may be determined based on integrating the subtracted NOx value. The method, control system, and vehicle system are configured to determine whether the cumulative difference exceeds a control threshold, and to set a selected upstream NOx value as a predetermined model upstream NOx amount if the cumulative difference exceeds the control threshold, but to set the selected upstream NOx value as the determined upstream NOx amount if the cumulative difference does not exceed the control threshold. Thus, the system is reset to the model when downstream NOx values exceed upstream NOx values above a threshold, to bring the system back within control.

Abstract: A system includes an exhaust aftertreatment system operatively coupled to an engine. The exhaust aftertreatment system includes an exhaust aftertreatment component. A flow sensor is structured to provide an exhaust flow rate value of exhaust gas exiting the engine. A temperature sensor is structured to provide an exhaust temperature value of the exhaust gas proximate the exhaust aftertreatment component. A controller includes an exhaust conditions circuit structured to interpret the exhaust flow rate value via operative communication with each of the flow sensor, and to interpret the exhaust temperature value via operative communication with the temperature sensor. A regeneration time circuit is structured to determine a regeneration time value based on each of the exhaust flow rate value and the exhaust temperature value via a regeneration time lookup table. A regeneration control circuit is structured to control regeneration of the exhaust aftertreatment component based on the regeneration time value.

Abstract: Methods and systems are provided for exhaust heat recovery and EGR cooling via a single heat exchanger. In one example, a method may include selecting a specific mode of operation of an engine exhaust system with the heat exchanger based on engine operating conditions and an estimated fuel efficacy factor. The fuel efficiency factor may take into account fuel efficacy benefits from EGR and exhaust heat recovery.

Abstract: An isolator in an exhaust system of a vehicle is provided. The isolator comprises a bracket to be connected with an under body of the vehicle; and a gas filled cushion at least partially embedded in the bracket. The cushion is formed to have a through hole in a middle portion and the through hole is configured to receive a hanger connected to an exhaust system.

Abstract: Disclosed is a water ingress preventive structure for a tailpipe which discharges exhaust gas outside of a vehicle at a terminal of an exhaust passage system. A curved shape is imparted to the tailpipe. A partition is mounted on an inner periphery of a curved portion outward of a curved direction so as to be gradually spaced apart from the inner periphery toward downstream in a direction of flow of the exhaust gas. Thus, a dead end portion is defined by the partition and the inner periphery of the curved portion outward of the curved direction.

Abstract: In a hybrid vehicle that includes an engine having a particulate matter removing filter configured to remove particulate matters in an exhaust system, when an increase in temperature of the particulate matter removing filter is requested in order to regenerate the particulate matter removing filter, dither control is executed to execute control such that an air-fuel ratio of the engine is repeated between a rich state and a lean state. Then, when the dither control is executed, control is executed such that the engine is operated at an operation point where the increase in temperature of the particulate matter removing filter is promoted among operation points where power output from the engine is retainable.

Abstract: A method and apparatus is provided for regenerating an after-treatment device associated with an exhaust system of an internal combustion engine. A lambda error control provides a lambda error signal based upon a measured lambda value and a predetermined lambda value indicative of rich operation. An after-injection map provides an after-injection preset based upon a speed and a torque of the internal combustion engine. A main injection map provides a torque-making main injection preset based upon the speed of the internal combustion engine and the torque of the internal combustion engine. A controller is configured to provide an after-injection quantity signal based upon the after-injection preset, the lambda error signal and a main injection quantity signal based upon the main injection preset and the lambda error signal such that the measured lambda value is maintained within a regeneration range.

Abstract: A rotary heat engine including a central crankshaft and a plurality of cylinder assemblies and a heat exchanger assembly. At least one of the plurality of cylinders, and preferably all of the plurality of cylinders includes a cylinder member, a piston member slidably positionable within the cylinder member, a connecting rod and a rolling diaphragm. The rolling diaphragm is positioned between the piston and the cylinder assembly to define a working volume which is in fluid communication with an opening that is in communication with the heat exchanger body.

Abstract: Provided is an insulator which is capable of reducing an abnormal noise. A first mounting hole engaging a vehicle body side is formed in a first portion, and a second mounting hole engaging an exhaust pipe side is formed in a second portion disposed to be spaced apart from the first portion. The first section and the second portion are coupled to each other by the coupling portion. The first portion and the second portion are adapted such that at least the inner peripheral surfaces of the first mounting hole and the second mounting hole are configured from a rubber-like elastic body having a self-lubrication property.

Abstract: Systems and methods provide a flow distribution device that includes a duct for a heat recovery steam generators having a duct an expansion portion extending from an inlet portion. The expansion portion has a larger cross-sectional area than the inlet portion. The flow distribution device includes a guide vane having a curved surface. The guide vane is positioned in the duct to extend from at least a part of the inlet portion into the expansion portion.

Abstract: Using various embodiments, methods and systems for cooling a data center using recovered thermal energy are described. In one embodiment, a data center cooling system comprises a first channel conveying a cooling fluid received from an outlet of a ventilation system of the computer data center at a first temperature, a second channel conveying the cooling fluid provided into an inlet of the ventilation system to cool the data center at a second temperature, and a heat transfer subsystem (HTS) configured to operate in an organic Rankine cycle (ORC) or a gas compression cycle (GCC) to change the temperature of the cooling fluid from the first temperature to the second temperature. In another embodiment, the system includes a monitoring subsystem monitoring a temperature, pressure, or flow of a working-fluid of the HTS and a controller subsystem to determine whether to operate the HTS in the ORC or GCC modes.