Patent ID: 9512796
Filing Date: 2016-12-06
CPC Classification: F01N,F02D,Y02T

Claim Text:
1. An exhaust purification apparatus for a spark ignition type internal combustion engine, the apparatus comprising: a catalyst that is provided in an exhaust passage of the internal combustion engine and purifies exhaust gas; a filter that is provided in the exhaust passage downstream of the catalyst and traps particulate matter contained in the exhaust gas; and a controller including a processor and configured to receive input signals from a plurality of sensors located within the internal combustion engine, the controller configured to prohibit a fuel cut, which is processing of stopping supply of fuel to the internal combustion engine, when thermal degradation of the catalyst is predicted to advance in the case of implementing the fuel cut, wherein the controller is further configured to execute the fuel cut even where thermal degradation of the catalyst is predicted to advance, when regeneration of the filter, which is processing of removing particulate matter trapped in the filter, is needed.