Exhaust gas purification device and engine
AssigneeYanmar Holdings Co., Ltd.
InventorsTsuyoshi INOUE, Daisuke MORIMITSU, Kohei IWAMOTO
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Abstract
An exhaust gas purification device for purifying exhaust gas of nitrogen oxides includes: a catalyst that is provided in an exhaust pipe (exhaust passage) for transporting exhaust gas, discharged from an engine, in a predetermined exhaust direction, and promotes the reduction of the exhaust gas; and an injection nozzle that is provided in the exhaust pipe so as to be upstream of the catalyst in the exhaust direction, and injects a reducing agent for reducing the exhaust gas. The injection nozzle includes an injection hole for injecting the reducing agent toward the catalyst, and a discharge hole for discharging a cooling medium in at least the direction opposite the exhaust direction.
Claims9
An exhaust gas purification device for purifying nitrogen oxides of exhaust gas, the exhaust gas purification device comprising:
- a catalyst that is provided in an exhaust passage that is configured to allow the exhaust gas discharged from an engine to flow in a predetermined exhaust direction and promote reduction of the exhaust gas;
- and
- an injection nozzle that is provided in the exhaust passage upstream from the catalyst in the predetermined exhaust direction and is configured to inject a reducing agent for reducing the exhaust gas,
- wherein the injection nozzle has:
- an injection hole configured to enable injection of the reducing agent toward the catalyst, and
- a discharge hole configured to enable discharge of a cooling medium at least in a direction opposite to the predetermined exhaust direction.
Dependencies are inferred from the claim text.