Disclosed herein is a method and an insert device for an internal combustion engine including: a central exhaust passage; a first expansion chamber in an upstream portion of the exhaust system and in fluidic communication with the central exhaust passage; a second expansion chamber in a downstream portion of the exhaust system and in fluidic communication with the central exhaust passage and the first expansion chamber, forming a continuous expansion chamber throughout a length of the insert device.

An exhaust gate, in particular for a heavy-goods vehicle, has a housing, which has an inlet and first and second outlets, on which first and second valve seats are formed, and a valve flap, which can be pivoted between the two valve seats to close the first or second outlet. The housing is formed as a cast part, which connects the inlet and at least the first outlet integrally to each other. The valve flap has a larger cross section than the inlet and the first and second valve seats.

A muffler, in particular an end muffler, is provided for an exhaust system in a vehicle. The muffler has a muffler housing that has an exhaust intake pipe via which exhaust flows into the muffler housing as well as an exhaust discharge pipe via which exhaust flows out of the muffler housing. At least part of the muffler housing or the entire muffler housing is surrounded by an outer housing, and an air gap is provided between the muffler housing and the outer housing.

An after treatment system (ATS) module for a vehicle includes, fluidly connected in series, an inlet, a plurality of chemical reaction modules and an urea mixer module. The chemical reaction modules are arranged to define a substantial quadrangular path of a flow of exhaust gases flowing in the ATS module. The urea mixer module is perpendicular to all the plurality of chemical reaction modules. The ATS module also includes deflector means configured to impart a swirling motion to the flow before flow enters in urea mixer module.

A mixer for a vehicle exhaust system includes an upstream baffle with at least one inlet opening configured to receive engine exhaust gas, a downstream baffle with at least one outlet opening configured to conduct engine exhaust gases to a downstream exhaust component, and an outer peripheral wall surrounding the upstream and downstream baffles and defining a mixer central axis. An intermediate plate is positioned between the upstream and downstream baffles to block direct flow from the inlet opening to the outlet opening. The intermediate plate initiates a rotational flow path that directs exhaust gases exiting the inlet opening through a rotation of more than 360 degrees about the mixer central axis before exiting the outlet opening.

An arrangement for treating exhaust gases of an internal combustion piston engine in a marine vessel, includes an exhaust gas channel coupled at its first end to the engine and having its second end opening to the environment, and a scrubber unit arranged between the first end and the second end of the exhaust gas channel. The arrangement has an exhaust gas channel cleaning system arranged to apply cleaning liquid on inner surface of the exhaust gas channel to a portion of the exhaust gas channel between the scrubber unit and the second end of the exhaust gas channel.

Disclosed is a device for storing a liquid for a motor vehicle, the device including a reservoir, including a bottom wall, a pump, mounted at an orifice formed at the bottom wall and including at least one portion extending through the orifice and including at least one suction nozzle, a filter mounted on the at least one portion of the pump at the at least one suction nozzle, and a mat arranged inside the reservoir at least partly on the bottom wall, the mat being able to move the liquid by capillarity and including a so-called “contact” portion being in contact with the filter at a contact surface in order to convey the liquid by capillarity to the filter.

Provided are a method for determining the disposition position of a spherical joint for coupling exhaust pipes to each other in an exhaust system, and an exhaust system, which enable engine vibrations to be more effectively damped. Inthepresent invention, strain gauges are attached at a plurality of locations in an exhaust system (1), simulated vibrations which simulate engine vibrations are imparted to the upstream-side end of the exhaust system (1), and bending strain is measured at each strain gauge. On the basis of the bending strain measured at each strain gauge, detected is a position at which generated is a bending moment that is equal to or greater than or equal to a torque amount which generates a maximum static friction force between a spherical inner-circumferential surface (26) and a spherical outer-circumferential surface (27) of a spherical joint (2) which come into contact with each other, and the detected position is determined to be the disposition position for the spherical joint (2).

The present invention relates to an exhaust treatment apparatus (1) for an internal combustion engine (5). The apparatus includes a catalyst chamber (15) containing a catalyst (35). One or more exhaust gas inlets (11 A-D) are provided for supplying exhaust gases from the internal combustion engine (5) to the catalyst chamber (C). An exhaust gas outlet (21) for supplying exhaust gases from the catalyst chamber to a turbocharger (25). An injection nozzle (19) is provided for introducing a reductant (23) into the exhaust gases between the catalyst (15) and the turbocharger (25). The reductant (23) and the exhaust gases can undergo mixing as they pass through the turbocharger (25). The catalyst (15) can have a three-dimensional open structure to facilitate the flow of exhaust gases. The invention also relates to a method of treating exhaust gases from an internal combustion engine (5).

An exhaust structure for a straddle-type vehicle includes a muffler having an outer tube constituting an outer circumferential member of the muffler; first and second separators defining expansion chambers in the outer tube; a body end member arranged at the downstream end of the outer tube; and glass wool provided on the inner circumference of the outer tube. The muffler further includes a resonator chamber provided in the most downstream portion of the muffler. The resonator chamber is formed by the outer tube, the body end member and the second separator situated closest to the body end member. The surroundings of the resonator chamber are surrounded by the glass wool. Such exhaust structure of a straddle-type vehicle is capable of taking measures against exhaust heat and exhaust sound even with a configuration where there is only one, single resonator chamber.