Exhaust gas after-treatment mixing device
AssigneeTenneco (Suzhou) Emission System Co., Ltd.
InventorCong Wang
Life of this patent
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Abstract
An exhaust gas after-treatment mixing device comprises a casing, a mixing pipe located in the casing and a partition plate separating the casing into an upstream space and a downstream space. The mixing pipe comprises a first pipe portion located in the upstream space and a second pipe portion located in the downstream space. The first pipe portion is provided with at least two first openings located on two sides of the first pipe portion, respectively. A shielding plate shields an upstream portion of at least one of the first openings. The shielding plate is shaped and positioned within the casing to urge exhaust gas flowing through the upstream space away from the first end of the mixing pipe and around the shielding plate prior to entering the first openings.
Claims18
An exhaust gas after-treatment mixing device comprising:
- a casing;
- a mixing pipe located in the casing, the mixing pipe including an axis and a first end adapted to receive an injected reductant;
- a partition separating the casing into an upstream space and a downstream space, wherein
- the mixing pipe comprises a first pipe portion located in the upstream space and a second pipe portion located in the downstream space, wherein the first pipe portion is provided with at least two first openings located on two sides of the first pipe portion, respectively;
- and
- a shielding plate shielding an upstream portion of at least one of the at least two first openings, the shielding plate being shaped and positioned within the casing to urge exhaust gas flowing through the upstream space away from the first end of the mixing pipe and around the shielding plate prior to entering the at least two first openings.
An exhaust gas after-treatment mixing device comprising:
- a casing;
- a mixing pipe located in the casing, the mixing pipe including an axis and a first end adapted to receive an injected reductant;
- a partition separating the casing into an upstream space and a downstream space, the partition comprising a first plate on an upstream side of the mixing pipe axis and a second plate on a downstream side of the mixing pipe axis, wherein
- the mixing pipe comprises a first pipe portion located in the upstream space and a second pipe portion located in the downstream space, wherein the first pipe portion is provided with at least two first openings located on two sides of the first pipe portion, respectively;
- and
- a shielding plate positioned upstream of the at least two first openings, the shielding plate being shaped and positioned within the casing to urge exhaust gas flowing through the upstream space away from the first end of the mixing pipe and around the shielding plate prior to entering the at least two first openings.
Dependencies are inferred from the claim text.