Fpt Motorenforschung Ag

Iveco Motorenforschung Ag

Cnh Industrial America LLC

John Campbell

Harald Fessler

Harald Hagin

Fritz Papst

Daniel Assalve

Reto Schlegel

Daniel Alan Morey

Panos Tamamidis

Rajeshwar Adupala

Kain Knowles

System for preventing the urea crystal formation within the ATS, the exhaust ATS comprising a dosing module having dosage means for producing a spray of urea-based reducing agent defining a spray cone downstream of the dosage means, the device comprising an electric heating element, suitable to be connected to an electrical energy source, arranged in order to operatively fall within the spray cone.

System for preventing the urea crystal formation within an exhaust gas after treatment system

Device for improving the purifying liquid evaporation in an axially symmetric dosing module for an SCR device. The dosing module is able to dose a urea-based reducing agent into a gas exhaust stream generated by a combustion engine. The dosing module comprises a housing developing symmetrically along a development axis; a nozzle for dosing the urea-based reducing agent, arranged along said development axis; and an inlet opening for conveying the gas exhaust stream into the dosing housing, arranged annularly with respect to the nozzle. The device further includes a splitting wall, arranged within the inlet opening for defining at least two separate annular gas stream paths, one annular and coaxial with respect to another, one of them shaped for inducing a different axial speed into a respective gas stream with respect to another.

System for improving the purifying liquid evaporation in an axially symmetric dosing module for an SCR device

An exhaust system for an agricultural vehicle is provided that includes a mixer configured to receive a spray of diesel exhaust fluid along a longitudinal axis of the mixer and an exhaust flow along a direction cross-wise to the longitudinal axis of the mixer. Additionally, the mixer is configured to mix the diesel exhaust fluid with the exhaust gas. Furthermore, the mixer is configured to discharge the exhaust gas along the longitudinal axis of the mixer.

Exhaust system for an agricultural vehicle

The present invention relates to a dosing module () for dosing an urea-based reducing agent into a exhaust gas stream of combustion engine and addressed to an after-treatment system, () e.g. SCR or SCRT system. The module () comprises an housing () which develops along a longitudinal axis (X) and an inlet opening () for conveying the exhaust gas. Dosage means () are provided for dosing the reducing agent. According to the invention, the inlet opening is annular and inclined with respect to the axis (X) of the housing () so as to generate an exhaust gas inlet jet (AJ). Moreover the dosage means are designed so as to generate, inside the housing (), an urea-based reducing agent spray (UWS) coaxial to the axis (X) of the housing ().

Dosing module for dosing an urea based reducing agent into a gas exhaust stream

The present invention provides for a method for dosing an urea-based reducing agent into a exhaust gas stream generated from a combustion engine and addressed to an aftertreatment system, e.g. SCR or SCRT system. According to the method of the invention the gas exhaust stream is conveyed into a dosing housing which develops along a longitudinal axis. In particular the gas is conveyed by generating an annular inlet jet inclined with respect of said axis. The urea-based reducing agent is injected by generating, inside the housing, an urea-based reducing agent spray which is preferably coaxial to said axis of the housing.

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St. Gallen, Switzerland

John Campbell