Patent ID: 9086005
Filing Date: 2015-07-21
Classification: F01N,Y02T

Abstract:
1. An exhaust purification system for an internal combustion engine comprising: a reduction catalyst arranged in an exhaust passage of the internal combustion engine; a reducing agent injecting device disposed above the exhaust passage and configured to inject a reducing agent into the exhaust passage in an angled downstream direction from an upstream side of the reduction catalyst; and an upper porous member and a lower porous member configured to promote evaporation of the reducing agent and fixed in the exhaust passage on the upstream side of the reduction catalyst and at positions to which the reducing agent injected from the reducing agent injecting device is sprayed, wherein the upper and lower porous members are parallel to a horizontal flow direction of exhaust gas, wherein the lower porous member is disposed downward in the angled downstream direction from the upper porous member, and wherein the upper and lower porous members are arranged so that planar centers of the upper and lower porous members are on an extension of an injection axis from the reducing agent injecting device.