Cummins Emission Solutions Inc.

Jakob Stang

Friedrich Johann Zapf

Ralf Rohrmueller

Christian Geiss

Jonas Hofmann

Thomas Kreser

Harald Breitenbach

A dosing module for an aftertreatment system includes: a housing; a dosing cartridge removably inserted in the housing, the dosing cartridge including a needle assembly; a cover coupled to the housing, the cover covering the dosing cartridge; an inlet port inserted in the housing, the inlet port configured to receive reductant and provide the reductant to the dosing cartridge; and a filter screw coupled to the inlet port such that the filter screw is interchangeable, the filter screw including a pin, the filter screw being compressible to provide compensation for fluid expansion.

Dosing module for use in aftertreatment systems for internal combustion engines

An aftertreatment system includes an inlet exhaust section, an outlet exhaust section, a first aftertreatment component, a first dosing module, and a second dosing module. The inlet exhaust section receives exhaust. The outlet exhaust section is in fluid communication with the inlet exhaust section. The first aftertreatment component receives the exhaust from the inlet exhaust section, treats the exhaust, and provides the exhaust to the outlet exhaust section. The first dosing module is positioned along the inlet exhaust section. The first dosing module is structured to selectively dose the exhaust with reductant. The second dosing module is positioned along the outlet exhaust section. The second dosing module is structured to selectively dose the exhaust with the reductant.

A valve solenoid includes a coil pot having an internal volume. A coil is positioned concentrically within the internal volume. An outer tube is positioned concentrically within the coil. A pole core is positioned concentrically within the outer tube. An armature includes an armature first portion positioned distal from the pole core and an armature second portion at least a portion of which is positioned concentrically within the outer tube. An inner tube is positioned concentrically within the channel defined by the armature such that the at least a portion of the armature second portion is positioned concentrically between the outer tube and the inner tube. An armature pin is fixedly coupled to the armature. A biasing member is positioned within the channel. A first end of the biasing member is coupled to the armature pin and a second end of the biasing member coupled to the pole core.

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Marktheidenfeld, Germany

Jakob Stang