Method for mixing an exhaust gas flow
AssigneeTenneco Automotive Operating Company Inc.
InventorsGünter Palmer, Tobias Höffel, Judith Schwöbel
Life of this patent
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Abstract
A mixer for mixing an exhaust flow with a fluid injected into an exhaust pipe includes a first mixing element including a base interconnecting first and second sidewalls and a deflection element positioned to be impacted by the injected fluid as well as a mixing fin positioned downstream of the deflection element. A second mixing element includes first and second spaced apart mounting flanges fixed to inner surfaces of the first and second sidewalls. Alternately, the mixer includes first and second mixing elements positioned within circumferentially spaced apart slots axially extending from an open end of a tubular housing.
Claims43
A mixer for mixing an exhaust flow within an exhaust pipe, the mixer comprising:
- a tubular housing including circumferentially spaced apart slots axially extending from an open end of the housing;
- a first mixing element including a center portion interconnecting a first peripheral portion with a spaced apart second peripheral portion, the first peripheral portion being positioned within one of the slots, the second peripheral portion being positioned within another one of the slots, the peripheral portions being fixed to the housing;
- and
- a second mixing element including a center portion interconnecting third and fourth spaced apart peripheral portions, the third and fourth peripheral portions being positioned within others of the slots and fixed to the housing, the second mixing element being spaced apart from the first mixing element, wherein the housing includes first and second inwardly protruding lips, the first lip extending along one side of one of the slots and being fixed to the first peripheral portion, the second lip extending along one side of another one of the slots and being fixed to the second peripheral portion.
A mixer for mixing an exhaust flow within an exhaust pipe, the mixer comprising:
- a tubular housing including circumferentially spaced apart slots axially extending from an open end of the housing;
- a first mixing element including a substantially planar body having a first peripheral portion and a second peripheral portion, the first peripheral portion being positioned within one of the slots, the second peripheral portion being positioned within another one of the slots, the peripheral portions being fixed to the housing;
- and
- a second mixing element including a substantially planar body having third and fourth peripheral portions, the third and fourth peripheral portions being positioned within others of the slots and fixed to the housing, the second mixing element being spaced apart from the first mixing element, wherein the tubular housing includes an inwardly extending spring element coupled to the first mixing element that moves to account for an increase in size of the first mixing element as temperature increases.
A mixer for mixing an exhaust flow within an exhaust pipe, the mixer comprising:
- a tubular housing including circumferentially spaced apart slots extending through the housing for a predetermined axial length, the tubular housing including radially inwardly extending indentations positioned adjacent the slots;
- a first mixing elements including a center portion interconnecting a first peripheral portion with a spaced apart second peripheral portion, the first peripheral portion being fixed to one of the indentations associated with one of the slots, the second peripheral portion being fixed to another one of the indentations associated with another one of the slots;
- and
- a second mixing element including a center portion interconnecting third and fourth spaced apart peripheral portions, the third and fourth peripheral portions being fixed to other indentations associated with others of the slots, the second mixing element being spaced apart from the first mixing element.
A mixer for mixing an exhaust flow within an exhaust pipe, the mixer comprising:
- a tubular housing including circumferentially spaced apart slots axially extending from an open end of the housing;
- a first mixing element including a center portion interconnecting a first peripheral portion with a spaced apart second peripheral portion, the first peripheral portion being positioned within one of the slots, the second peripheral portion being positioned within another one of the slots, the peripheral portions being fixed to the housing;
- and
- a second mixing element including a center portion interconnecting third and fourth spaced apart peripheral portions, the third and fourth peripheral portions being positioned within others of the slots and fixed to the housing, the second mixing element being spaced apart from the first mixing element.
A mixer for mixing an exhaust flow within an exhaust pipe, the mixer comprising:
- a tubular housing including circumferentially spaced apart slots axially extending from an open end of the housing;
- a first mixing element including a substantially planar body having a first peripheral portion and a second peripheral portion, the first peripheral portion being positioned within one of the slots, the second peripheral portion being positioned within another one of the slots, the peripheral portions being fixed to the housing;
- and
- a second mixing element including a substantially planar body having third and fourth peripheral portions, the third and fourth peripheral portions being positioned within others of the slots and fixed to the housing, the second mixing element being spaced apart from the first mixing element.
Dependencies are inferred from the claim text.