Patent ID: 8677736
Filing Date: 2014-03-25
Classification: F01N,Y02T

Abstract:
1. An exhaust gas purification apparatus of an internal combustion engine comprising: a liquid supply device that stores a liquid additive and supplies the liquid additive into an exhaust passage of the internal combustion engine, a gas supply device that stores a gas additive and supplies the gas additive into said exhaust passage, a catalyst that is arranged in the exhaust passage at a downstream side of locations at which the additives are supplied from said liquid supply device and said gas supply device, with the additives reacting in the catalyst, and an adjustment device that adjusts an amount of the liquid additive to be added from said liquid supply device, and an amount of the gas additive to be added by said gas supply device in accordance with a rule which has been defined beforehand; wherein said catalyst is arranged at an upstream side of, or is supported by, a filter which collects particulate matter in the exhaust gas; and wherein said adjustment device makes the proportion of the liquid additive to be added from said liquid supply device lower and the proportion of the gas additive to be added by said gas supply device higher, when regeneration of said filter is carried out than when regeneration of said filter is not carried out.