An aftertreatment assembly for an internal combustion engine is disclosed. The assembly includes an aftertreatment component with an inlet, and a pipe connection fluidly connected to the inlet. The pipe connection includes an adjustable spherical pipe joint that joins two angularly offset pipe sections, and a slip pipe joint that joins two axially aligned pipe sections and that can adjust a combined length of the two axially aligned pipe sections. The assembly allows for compensating the positional and orientational displacements between an exhaust outlet and the inlet of the aftertreatment assembly.

A dust ejector and exhaust tube assembly is provided. The dust ejector and exhaust tube assembly comprises an exhaust tube, and a dust ejector tube at least partially located within the exhaust tube. The dust ejector tube includes a tube portion having a constant diameter smaller than a diameter of the exhaust tube. The dust ejector tube further includes an outlet portion including an outlet of the dust ejector tube. The outlet of the dust ejector tube has a diameter larger than the constant diameter of the tube portion.

A method for coating an internal surface of a component including preparing the internal surface, coating with chemical deposition fluid and curing the coating, is provided. The method includes flushing the internal surface with a supercritical fluid, for preparing the internal surface. The method further includes flushing the internal surface with a chemical deposition fluid such the chemical deposition fluid creates a coating on the internal surface. The method further includes curing the coating with an infrared heat source.

A vehicular exhaust pipe structure includes an outer pipe extending along a front-rear direction of a vehicle and an inner pipe disposed inside the outer pipe along an axial direction of the outer pipe. The inner pipe is joined to the outer pipe such that a vacuum layer is formed between the inner pipe and the outer pipe. The inner pipe includes a pseudo-cylindrical concave polyhedral shell-shaped part.

An exhaust manifold for a vehicle engine may include a plurality of pipes, a pod, a splined collector and a downpipe. Each pipe in the plurality of pipes are operatively configured to be coupled to a corresponding engine chamber at a proximate portion. The pod is operatively configured to align a flow of exhaust gas emerging from each of the corresponding engine chambers to the associated pipe in the plurality of pipes. The splined collector receives the outlet ends of the pipes at a splined collector inlet. The downpipe may be affixed to the splined collector at a small diameter outlet portion. The downpipe includes a first oxygen sensor operatively configured to communicate with a second oxygen sensor disposed in a downstream catalytic converter and an ECM in order to regulate air and fuel for the vehicle engine.

An exhaust pipe structure includes an exhaust pipe, a branching portion including an inflow port, a first flow path, a second flow path, a first discharge port, and a second discharge port, a first muffler, a first pipe, a second muffler, and a second pipe. The second flow path is lower in position in an up-down direction of a vehicle than the first flow path at a downstream side part of the second flow path including at least a portion of the second discharge port. The second pipe is lower in position in the up-down direction of the vehicle at an upstream side part connected to the second discharge port than an upstream side part of the first pipe connected to the first discharge port.

Regarding an industrial vehicle 101 configured to include an engine 1 mounted on a front portion of a travelling machine body 102 and an exhaust gas purification device 2 for purifying exhaust gas of the engine 1, the industrial vehicle 101 is such that the exhaust gas purification device 2 is mounted on an upper portion side of the engine 1, and the engine 1 and the exhaust gas purification device 2 are covered with a hood 114, and a maneuvering seat 117 is arranged on a rear side of the hood 114, and it is an object to suppress heat damage on the exhaust gas purification device 2 itself and the hood 114. Opening holes 160 are formed on right and left bilateral sides of the hood 114, and an introduction fin 166 that tilts in a posture for taking in outside air from an advancing direction is arranged in each opening hole 160.

A tractor according to an embodiment of the present invention includes a first exhaust gas treatment unit, a second exhaust gas treatment unit, a urea water tank, and a urea water pump. The first exhaust gas treatment unit is provided above an engine inside a hood. The second exhaust gas treatment unit is provided laterally outside one of right and left sides of the hood, and uses urea water to further treat exhaust gas purified by the first exhaust gas treatment unit. The urea water tank is provided laterally outside another of right and left sides of the hood, and stores therein the urea water. The urea water pump is provided behind the second exhaust gas treatment unit, and supplies the urea water stored in the urea water tank to the second exhaust gas treatment unit.

An industrial vehicle includes: an exhaust gas treatment device arranged in an engine room so as to be located above an engine, the exhaust gas treatment device including a pretreatment unit accommodating a diesel oxidation catalyst and extending in the forward/rearward direction, a selective catalytic reduction unit located adjacent to the pretreatment unit and extending in the forward/rearward direction, a connecting pipe including a mix portion, a first bent portion, and a second bent portion, the mix portion being located between the pretreatment unit and the selective catalytic reduction unit and extending in the forward/rearward direction, the first bent portion connecting the mix portion and an outlet of the pretreatment unit, the outlet being located close to a dividing wall, the second bent portion connecting the mix portion and an inlet of the selective catalytic reduction unit, the inlet being located far from the dividing wall, and a urea water injection device attached to the first bent portion of the connecting pipe so as to be located on an extended line of the mix portion and configured to inject urea water into an exhaust gas; a urea water tank arranged outside the engine room and storing the urea water; and a urea water pipe configured to guide the urea water from the urea water tank to the urea water injection device and penetrating the dividing wall.

A V-type engine includes an engine body including a crankcase configured to rotatably support a crankshaft, and a first and second cylinder banks extending from the crankcase, an exhaust collecting pipe connected to the first and second cylinder banks, a catalyst accommodated in the exhaust collecting pipe, and a muffler detachably connected to the exhaust collecting pipe, wherein the catalyst extends in a height direction of the engine body from a base end side of the first cylinder bank to a distal end side of the first cylinder bank.