Patent ID: 7565798
Filing Date: 2009-07-28
Classification: F01N,F02B,F02D,F02M,Y02T

Abstract:
1. An exhaust gas purifying apparatus in an internal combustion engine having an intake path, and first and second exhaust paths, the exhaust paths being arranged in parallel, the apparatus comprising: an exhaust gas purifier that is provided at least in the first exhaust path; a first exhaust gas supply path for supplying exhaust gas from the first exhaust path to the intake path; a second exhaust gas supply path for supplying exhaust gas from the second exhaust path to the intake path; a merging portion at which the exhaust gas supplied to the intake path from the first exhaust path and the exhaust gas supplied to the intake path from the second exhaust path merge; a discharge flow rate adjuster configured to adjust an exhaust flow rate of exhaust gas discharged from the first exhaust path; a supply flow rate adjuster configured to adjust a supply flow rate of exhaust gas supplied to the intake path via the second exhaust gas supply path; and a control section configured to control the discharge flow rate adjuster and the supply flow rate adjuster in response to a process for regenerating the purifier, wherein the control section controls the discharge flow rate adjuster so as to reduce the discharge flow rate of exhaust gas discharged from the first exhaust path, and controls the supply flow rate adjuster so as to reduce the supply flow rate of exhaust gas supplied to the intake path via the second exhaust gas supply path.