An exhaust after-treatment system for treating an exhaust produced by an engine. The exhaust after-treatment system includes an exhaust passage, at least one catalytic exhaust after-treatment component in communication with the exhaust passage for treating the exhaust, and a water-removal device in communication with the exhaust passage that receives a portion of the exhaust therein at a location positioned upstream from the catalytic exhaust after-treatment component. The water-removal device is defined by a housing that includes a water-removal membrane that separates water from the portion of the exhaust to provide a permeate that is enriched with water, and to produce a retentate that is water depleted that facilitates the treating of the exhaust by the catalytic exhaust after-treatment component.

A unit for regulating or controlling a fluid pressure of a fluid has a housing with at least one housing part and an inlet and an outlet for the fluid. A switching film is connected to the housing part and switches at pressure differences of 1 to 250 mbar relative to an ambient pressure acting on the switching film. The switching film regulates, releases or blocks a flow of the fluid between the inlet and the outlet for the fluid. The switching film is made of thermoplastic synthetic material. An opening cross section of the housing part is closed off by the switching film. In a method for fluid-tightly connecting a switching film to a housing part of the unit, a radial outwardly positioned joining region of the switching film is fluid-tightly pressed against the housing part in the region of joining surface.

A unit for regulating or controlling a fluid pressure of a fluid has a housing with at least one housing part and an inlet and an outlet for the fluid. A switching film is connected to the housing part and switches at pressure differences of 1 to 250 mbar relative to an ambient pressure acting on the switching film. The switching film regulates, releases or blocks a flow of the fluid between the inlet and the outlet for the fluid. The switching film is made of thermoplastic synthetic material. An opening cross section of the housing part is closed off by the switching film. In a method for fluid-tightly connecting a switching film to a housing part of the unit, a radial outwardly positioned joining region of the switching film is fluid-tightly pressed against the housing part in the region of joining surface.

An exhaust after-treatment system for treating an exhaust produced by an engine. The exhaust after-treatment system includes an exhaust passage, at least one catalytic exhaust after-treatment component in communication with the exhaust passage for treating the exhaust, and a water-removal device in communication with the exhaust passage that receives a portion of the exhaust therein at a location positioned upstream from the catalytic exhaust after-treatment component. The water-removal device is defined by a housing that includes a water-removal membrane that separates water from the portion of the exhaust to provide a permeate that is enriched with water, and to produce a retentate that is water depleted that facilitates the treating of the exhaust by the catalytic exhaust after-treatment component.

An exhaust after-treatment system for treating an exhaust produced by an engine. The exhaust after-treatment system includes an exhaust passage, at least one catalytic exhaust after-treatment component in communication with the exhaust passage for treating the exhaust, and a water-removal device in communication with the exhaust passage that receives a portion of the exhaust therein at a location positioned upstream from the catalytic exhaust after-treatment component. The water-removal device is defined by a housing that includes a water-removal membrane that separates water from the portion of the exhaust to provide a permeate that is enriched with water, and to produce a retentate that is water depleted that facilitates the treating of the exhaust by the catalytic exhaust after-treatment component.

The invention concerns a unit (10) for regulating or controlling a fluid pressure, with at least one housing part (13, 14) and a switching film (22) connected with the at least one housing part (13, 14) for switching at pressure differences of 1 to 250 mbar, preferably of 1 to 100 mbar, relative to an ambient pressure acting on the switching film (22) and for regulating, releasing or blocking a flow of the fluid between an inlet (28) and an outlet (30) for the fluid. The switching film (22) is formed of thermoplastic synthetic material. In this context, an opening cross section (40) of the at least one housing part (13, 14) is closed off by the switching film (22).

The invention concerns moreover a method for fluid-tight connection of a switching film (22) with at least one housing part (13, 14) of a unit (10), wherein a radial outwardly positioned joining region (42) of the switching film (22) in the region of at least one joining surface (50, 52) is fluid-tightly pressed against the at least one housing part (13, 14).

The invention concerns a unit (10) for regulating or controlling a fluid pressure, with at least one housing part (13, 14) and a switching film (22) connected with the at least one housing part (13, 14) for switching at pressure differences of 1 to 250 mbar, preferably of 1 to 100 mbar, relative to an ambient pressure acting on the switching film (22) and for regulating, releasing or blocking a flow of the fluid between an inlet (28) and an outlet (30) for the fluid. The switching film (22) is formed of thermoplastic synthetic material. In this context, an opening cross section (40) of the at least one housing part (13, 14) is closed off by the switching film (22).

The invention concerns moreover a method for fluid-tight connection of a switching film (22) with at least one housing part (13, 14) of a unit (10), wherein a radial outwardly positioned joining region (42) of the switching film (22) in the region of at least one joining surface (50, 52) is fluid-tightly pressed against the at least one housing part (13, 14).