In one embodiment, an apparatus includes a frame for mounting in a rack in a position adjacent and external to a network device supported by the rack and a filter module for holding a filter for filtering air entering an air inlet of the network device. The frame includes an opening for receiving the filter module and positions the filter adjacent to the air inlet of the network device when installed on the rack.

An arrangement of at least two engine-compartment exhaust system components is provided for an internal combustion engine of a motor vehicle. The at least two engine-compartment exhaust system components are arranged one behind the other downstream from the internal combustion engine of the motor vehicle and are connected to one another by means of a first connecting body, so that exhaust gas from the internal combustion engine can be directed in succession through the at least two exhaust system components in the direction of an exhaust system. In addition, the two exhaust system components are also arranged behind a manifold device of the internal combustion engine by means of a second connecting body. A motor vehicle is also provided which comprises at least one such arrangement.

An apparatus for treating air includes a housing with an air inlet and an air outlet, the housing enclosing an air treatment zone and an ozone removal zone, wherein the ozone removal zone is positioned downstream of the air treatment zone with respect to a flow direction of the air being treated, an ozone generator in the air treatment zone configured to generate ozone from the air, wherein the ozone generated by the ozone generator treats the air in the air treatment zone, catalyst in the ozone removal zone that removes at least a portion of the ozone generated the ozone generator, a particle matter (PM) filter positioned between the air treatment zone and the ozone removal zone, wherein the ozone generated by the ozone generator treats the PM filter, and an air mover positioned near the air outlet configured to draw the air through the air inlet.

An exhaust gas treatment system for an internal combustion engine includes an exhaust gas pathway configured to receive exhaust from the engine, a diesel particulate filter (DPF) element positioned in the exhaust gas pathway to capture particulate matter from the exhaust, and a regenerator operable to increase a temperature of the exhaust that passes through the DPF element. The system also includes a controller configured to selectively operate the exhaust gas treatment system in a first mode in which the regenerator is inactive such that a temperature of the exhaust is within a first range, a second mode in which the regenerator is activated to increase the temperature of the exhaust to a first target temperature beyond the first range, and a third mode in which the regenerator is activated to increase the temperature of the exhaust to a second target temperature greater than the first temperature.

Method and system for the removal of nitrogen oxides, from flue gas at low temperatures.

Catalyzed particulate filters comprise three-way conversion (TWC) catalytic material that permeates walls of a particulate filter such that the catalyzed particulate filter has a coated porosity that is less than an uncoated porosity of the particulate filter. The coated porosity is linearly proportional to a washcoat loading of the TWC catalytic material. A coated backpressure is non-detrimental to performance of the engine. Such catalyzed particulate filters may be used in an emission treatment system downstream of a gasoline direct injection engine for treatment of an exhaust stream comprising hydrocarbons, carbon monoxide, nitrogen oxides, and particulates.

The invention relates to a wall-flow filter for cleaning exhaust gases from engines, with parallel exhaust gas inlet channels and exhaust gas outlet channels which are closed at alternate ends, said filter additionally comprising catalyst channels which are closed at both ends and contain a catalyst in solid form. The invention also relates to production methods and uses of the filter for cleaning exhaust gases, particularly from diesel engines.

The invention relates to an air intelligent circulation filter window for confined space which includes a window, an air blowing device and a circulation filtration device. The window includes an upper window frame, a lower window frame and support plates. The air blowing device includes an exhaust humidifying mechanism and a first sensor group. The exhaust humidifying mechanism includes a humidifying water tank, a first air pump, a mixer and a first air filter. The circulation filtration device includes a first filter pump, a plurality of heat exchange cavities, a second filter pump and a second sensor group. The first filter pump and the second filter pump respectively include a second air pump, a second air filter, and an air outlet. The heat exchange cavities are provided with heat exchange tubes. The an air intelligent circulation filter window for confined space of the present invention has the advantages of simple structure, convenient to use, energy saving and environmental protection, small occupied area and high intelligence degree which effectively solves the problem that the existing confined space window without ventilation does not have temperature control function.

The disclosure relates to an exhaust gas aftertreatment system for an internal combustion engine (10), in particular for an internal combustion engine (10) charged by means of an exhaust gas turbocharger (30) and spark-ignited by means of spark plugs (16). A particulate filter (24) and a first three-way catalytic converter (26) downstream from the particulate filter (24) are arranged in a position close to the engine in an exhaust gas system (20) connected to an outlet (12) of the internal combustion engine (10). A further three-way catalytic converter (28) is arranged in the underbody position of the motor vehicle, downstream from the first three-way catalytic converter (26). According to the invention, an exhaust gas burner (34) is active from the start of the engine, introducing hot exhaust gas into the exhaust gas system (20), downstream from the particulate filter (24), in order to heat at least one of the three-way catalytic converts (26, 28) to a light-off temperature, as quickly as possible after the cold start, thereby allowing an efficient exhaust gas aftertreatment. The exhaust gas burner (34) can be switched off when at least one of the two three-way catalytic converters (26, 28) has reached its light-off temperature.

An air purifier and a passive humidity module for inside air. The air purifier includes a housing and an air purifier air outlet. The passive humidity module is disposed at least partially on the air purifier air outlet. The passive humidity module includes a housing assembly defining an air inlet and an air outlet, a water tank supported by the housing assembly, a wick filter reservoir fluidly coupled to the water tank, at least one gutter fluidly coupled to the water tank, and a wick filter disposed in the wick filter reservoir and supported by the housing assembly. The air inlet is at least partially aligned with the air purifier air outlet. The passive humidity module includes an airflow path flowing between the water tank and the wick filter, and fluidly connecting the air inlet and the air outlet.