Patent ID: 9032913
Filing Date: 2015-05-19
Classification: B01J,C01B,F01N,F02D,F02M,Y02P,Y02T

Abstract:
1. An internal combustion engine system comprising an internal combustion engine in which an exhaust circulation path is connected to an exhaust path and an intake path communicating with a combustion chamber; a reforming fuel injection device configured to inject a reforming fuel into an exhaust gas flowing through the exhaust circulation path; a reformer provided with a reforming catalyst configured to generate a hydrogen-containing gas using the reforming fuel; and a controller including a regeneration timing determination section that is programmed to determine whether or not reforming of the exhaust gas has been discontinued, and a reforming catalyst regeneration section that is programmed to direct an oxygen-containing gas through the exhaust circulation path to regenerate the reforming catalyst upon the regeneration timing determination section determining that the reforming of the exhaust gas has been discontinued, the regeneration timing determination section determining that the reforming of the exhaust gas has been discontinued by determining whether or not reforming of the exhaust gas flowing through the exhaust circulation path is to be started, and upon determining that reforming of the exhaust gas flowing through the exhaust circulation path is to be started, the reforming catalyst regeneration section performs regeneration of the reforming catalyst during an EGR reforming start time before injection of the reforming fuel.