Exhaust gas post-treatment device
AssigneeRobert Bosch GmbH
InventorsSiegurd Kloeckner, Christian Alt
Life of this patent
Estimating the term…
Abstract
A device, in particular an exhaust gas post-treatment device, having a pipe, in particular an exhaust pipe, through which a gas flow, in particular exhaust gas of an internal combustion engine, s is guided; having an injection device, associated with the pipe, for metered injection of a fluid medium, in particular exhaust gas post-treatment agent, into the gas flow; and having at least one mixing apparatus that is disposed in the pipe downstream from the injection device and has several air guidance elements disposed in one plane. Provision is made that the plane is oriented at least substantially perpendicularly to an injection direction of the injection device.
Claims8
An exhaust gas post-treatment device, comprising:
- an exhaust pipe, through which a gas flow is guided, the gas flow being an exhaust gas of an internal combustion engine;
- an injection device, associated with the pipe, for metered injection of an exhaust gas post-treatment agent into the gas flow;
- and
- at least one mixing apparatus disposed in the pipe downstream from the injection device, each of the at least one mixing apparatus having several air guidance elements disposed in one plane, wherein the plane is oriented perpendicularly to an injection direction of the injection device, and the plane of the guidance elements being oblique to a flow direction of the gas flow in the pipe directly upstream from the mixing apparatus;
- wherein the injection direction of the injection device is oblique to a flow direction of the gas flow in the pipe directly upstream from the mixing apparatus;
- and
- wherein the air guidance elements are vanes and are distributed in the pipe radially around a circumference of the exhaust pipe.
Dependencies are inferred from the claim text.