A condensed water drainage device of an exhaust system includes a casing having an inlet on a first side thereof and an outlet on a second side thereof and a deformable member coupled to the first side of the casing and configured to elastically and extendably deform. The drainage device includes a condensed water drainage member coupled to the deformable member to extend the deformable member by pressure of an exhaust gas introduced to the deformable member and having a condensed water drainage hole communicating with the outlet. The drainage device includes a stopper coupled to the second side of the casing to limit movement of the condensed water drainage member and to open or close the condensed water drainage hole according to extension or contraction of the deformable member.

A system and method include determining, by a controller associated with an aftertreatment system, satisfaction of an enabling condition and in response to the satisfaction of the enabling condition pausing, by the controller, hydrocarbon dosing in a regeneration cycle of the aftertreatment system. The system and method also include upon pausing of the hydrocarbon dosing, monitoring, by the controller, an oxidation catalyst of the aftertreatment system for a light-off shift condition.

Methods and systems are provided for expediting exhaust catalyst light-off prior to an anticipated engine cold-start event. In one example, a method may include, in anticipation of an engine cold-start, preemptively operating an electric booster and routing compressed air to the catalyst to increase a temperature of the exhaust catalyst while maintaining the engine inactive.

A pillar-shaped honeycomb structure including an outer peripheral side wall, a plurality of first cells provided on an inner peripheral side of the outer peripheral side wall, the first cells extending from a first end surface to a second end surface, each opening on the first end surface and having a sealing portion with an average void ratio of 4% or less on the second end surface, and a plurality of second cells provided on the inner peripheral side of the outer peripheral side wall, the second cells extending from the first end surface to the second end surface, each having a sealing portion with an average void ratio of 4% or less on the first end surface and opening on the second end surface, the first cells and the second cells being alternately arranged adjacent to each other with a partition wall interposed therebetween.

A device that filters particulate matter from the exhaust stream of an engine includes a supporting structure with an elongate support, and a filter sleeve disposed within an exterior sleeve; a filter sleeve comprising a tubular shaft of filter material, the shaft having an open first end, and a closed second end; an exterior sleeve comprising a tubular shaft that defines an internal cavity that is sized and proportioned to receive the filter sleeve, the tubular shaft having an open first end, and a substantially closed second end, the substantially closed second end having a hole for filtered exhaust gases to pass through; and an attachment member that mounts the exterior sleeve to the supporting structure.

An oceangoing vessel exhaust pipe coupling used to temporarily couple to an oceangoing vessel exhaust pipe. Installation and removal of the coupling only requires a simple mechanism with three translational degrees of freedom and one rotational degree of freedom, thereby enabling remote coupling. The coupling adapts to a wide array of exhaust pipe shapes and sizes. This is accomplished by a unique shape that allows stable and balanced resting position on top of an exhaust pipe as well as a two-chamber configuration, wherein the two chambers are separated by a permeable partition. Furthermore, the unique shapes of the chambers deflect the exhaust gas stream towards the outlet of the coupling, regardless of exhaust pipe style, thereby increasing capture efficiency and extending the life of an attached fabric flexible hose.

An internal combustion engine exhaust modification system for transforming exhaust emissions from an internal combustion engine into modified exhaust emissions. The exhaust modification system includes a housing extending between inlet and outlet ends thereof. The system also includes an impeller rotatably mounted in the housing, and a filter subassembly downstream from the impeller. The filter subassembly removes part of particulate matter and liquid droplets in the exhaust emissions to transform the exhaust emissions into modified exhaust emissions. The system includes a conduit extending between an inner end thereof positioned to direct cooler air exiting therefrom into the housing toward the filter subassembly, and an outer end thereof. The system also includes a funnel subassembly having a funnel body for directing the cooler air into the outer end of the conduit.

Method and system are provided for a retractile exhaust tail pipe for vehicles. The system comprises an exhaust tube mounted to an underbody of a vehicle, an exhaust tip slidably mounted to the exhaust tube, the exhaust tip having a plurality of extension shafts fixed on a second end, and an exhaust tip retract module positioned on the exhaust tube circumscribing an outer surface, the exhaust tip retract module having an actuator, a gear, and a plurality of bearings that mate with the plurality of extension shafts on the exhaust tip. In one example, the system reduces a probability of vehicle tail pipes contacting a ground surface in an off-road condition.

A diesel-electric locomotive includes a diesel emissions reduction unit, including an inlet configured to receive an exhaust stream of a high-speed diesel engine; means for trapping at least a portion of diesel particulate matter contained in the exhaust stream; an aqueous NH.sub.3 dosing system including a dosing controller in communication with an electronic locomotive controller and a nitrogen oxide (“NO.sub.x”) concentration sensor and an ammonia (“NH.sub.3”) concentration sensor, at least one oxidation catalyst panel arranged to isolate the NO.sub.x concentration sensor from NH.sub.3 in the exhaust stream; mixing elements located between the dosing system and the NO.sub.x and NH.sub.3 concentration sensors to mix metered aqueous NH.sub.3 in the exhaust stream; a selective catalyst reactor bed located between the mixing elements and the NO.sub.x and NH.sub.3 concentration sensors; and an exhaust heating system in communication with at least one of the dosing and electronic locomotive controllers.

A transport refrigeration unit (TRU) is provided and includes a power generation unit, a catalytic element, a tubular element fluidly interposed between the power generation unit and the catalytic element and a control System. The control System is disposed and configured to control operations of the power generation unit in accordance with readings of sensed characteristics of fluid flows between the power generation unit and the catalytic element.