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.

A recirculation pipe and an engine system including the same are provided. A recirculation pipe of an EGR apparatus may include a pipe body, and a plurality of bellows tube assemblies formed in the pipe body and including a plurality of bellows tube. One bellows tube assembly among the plurality of bellows tube assemblies and another bellows tube assembly among the plurality of bellows tube assemblies have different shapes.

A recirculation pipe and an engine system including the same are provided. A recirculation pipe of an EGR apparatus may include a pipe body, and a plurality of bellows tube assemblies formed in the pipe body and including a plurality of bellows tube. One bellows tube assembly among the plurality of bellows tube assemblies and another bellows tube assembly among the plurality of bellows tube assemblies have different shapes.

A system for sealing components of an exhaust system in an engine system comprises a bellows with an elongated portion. A flange is coupled to the elongated portion, the flange comprising a first portion and a second portion. An extended portion extends between the first portion and the second portion, the extended portion defining a gap and having a cross-sectional shape different than the first portion and the second portion. A connector is configured to couple an aftertreatment system to the flange. The connector comprises a sealing surface adjacent to the flange. A sealing component is sized and configured to fit partially within the gap and contact the sealing surface to create a seal between the extended portion and the sealing surface.

A bellows having tweezers-shaped corrugated portions for increasing resistance and restoring force against torsion includes: a first flat part having a flat cylindrical shape; a second flat part having a flat cylindrical shape and disposed opposite to the first flat part; and a plurality of corrugated portions, each having a tweezers shape and disposed between the first flat part and the second flat part, wherein each of the plurality of corrugated portions is sequentially connected to each other, so as to increase resistance and restoring force against torsion.

The present disclosure is directed to a flexible pipe assembly that includes a pipe, a sleeve, a first connection assembly, and a second connection assembly. The pipe of the flexible pipe assembly includes a first end portion that is coupled to an external vertical exhaust pipe that allows exhaust to escape from a truck and a second end portion that is coupled to a pipe to an outlet of an exhaust aftertreatment system (EAS). The pipe also includes a third portion, which is a bellows, coupling the first end portion to the second end portion of the pipe of the flexible pipe assembly. The first and second connection assemblies couple the sleeve to the pipe of the flexible pipe assembly by passing through holes in the sleeve and the pipe of the flexible pipe assembly.

Disclosed herein is a system and methods for the reduction of emissions from multiple stationary industrial diesel engines utilized in Hydraulic Fracturing Operations. Mobile Multiple Engine Exhaust Emissions Processing System (MMEEEPS) is a mobile system which comingles exhaust from multiple stationary diesel engines and processes the exhausts through a mobile Diesel Particulate Filter (DPF). In an embodiment, the DPF is mounted on a trailer for mobility. Exhaust stacks from stationary engines connect via flexible insulated piping to overhead trunk line(s), that can be custom assembled to fit the needs of each application. With the assistance of Variable Speed In-Line Blowers (VSIB) the exhausts are captured and lead to single or multiple manifolds, which lead to the MMEEEPS unit. The MMEEEPS unit can be configured to mount to multiple stationary diesel engines in any configuration while utilizing VSIB to aid in capture of the emissions to be processed through a DPF, resulting in a significant reduction in emissions.

An exhaust additive distribution arrangement for an exhaust system of an internal combustion engine (2) includes an exhaust duct element (14), an exhaust additive injection unit (20), and a primary vaporization element (16); wherein the primary vaporization element (16) is a tubular body arranged in the interior of the exhaust duct element (16), has a predefined space between an inner surface of the exhaust duct element (14) and an outer surface of the primary vaporization element (16), and protrudes from the exhaust duct element (14) at an outlet end; and wherein the exhaust additive injection unit (20) is arranged to inject exhaust additive liquid from a point at the inner surface of the exhaust duct element (14) towards an inner surface of the primary vaporization element (16). The exhaust additive injection unit (20) is of the liquid-only type, and the primary vaporization element (16) has a length that is sufficiently short to allow injected exhaust additive liquid to run off of the outlet end of the primary vaporization element (16). The present invention also concerns an exhaust additive distribution system and a vehicle (1) comprising the exhaust additive distribution arrangement.

An SCR after-treatment system for a locomotive engine includes an enclosure defining an exhaust flow path from an inlet to an outlet, the inlet being flexibly connected to an exhaust outlet of the engine, an injector located in the inlet and configured to provide an aerosolized reductant into the exhaust flow path, a mixing tube extending from the inlet into the enclosure towards a back wall of the enclosure; a plurality of catalyst cells extending parallel to the mixing tube; the exhaust flow path traveling through the plurality of catalyst cells between the mixing tube and the outlet, and a side channel located between the mixing tube and the plurality of catalyst cells. The enclosure is configured to create low back pressure and an even distribution of the exhaust flow path across the plurality of catalyst cells.

A method of attaching a casted metal part and a metal hose line includes: providing a cast metal part having a cylindrical portion; providing a metal hose line; heating the metal hose line to a temperature of between 500 and 900 degrees Fahrenheit; positioning the inner diameter of the metal hose line over the outer diameter of the cylindrical portion; allowing the metal hose line to cool to reduce the gap between the inner diameter of the metal hose line and the outer diameter of the cast metal part; and forming a first weld along an outer circumference of the metal hose line, wherein the width of the first weld at the connection between the hose line and cast metal part is 50% or less than the metal hose wall thickness.