Patent ID: 8661672
Filing Date: 2014-03-04
Classification: F01N,Y02A,Y02T,Y10T

Abstract:
1. A method for manufacturing a motor vehicle exhaust gas purifying member, the purifying member comprising: a substantially cylindrical housing defining an exhaust gas channel, a substantially cylindrical exhaust gas purification block placed in the housing, and an exhaust gas purification block-retaining element, the exhaust gas purification block having a side wall ( acquiring a first magnitude representative of a mass of the exhaust gas purification block retaining element; acquiring a second magnitude representative of a composition of the nonfunctional component of said exhaust gas purification block retaining element; determining, from the first and second acquired magnitudes, an equivalent mass corresponding to the mass of said exhaust gas purification block retaining element after said characteristic period of use of said exhaust gas purifying member; assessing a volume on the basis of the equivalent mass and a target installation density for said exhaust gas purification block retaining element in the annular space; determining a diameter of the housing on the basis of an outer diameter of the exhaust gas purification block and the volume; assembling the housing, said exhaust gas purification block retaining element and the exhaust gas purification block to obtain a housing whereof a diameter is equal to the predetermined diameter, the installation density of the exhaust gas purification block retaining element being equal to the target installation density after said characteristic period of use of said exhaust gas purifying member.