Patent ID: 7614229
Filing Date: 2009-11-10
Classification: F01N,F02B,F02D,F02P,Y02T

Abstract:
1. A control system for a supercharged internal combustion engine, the control system comprising: a main exhaust passage that extends from an exhaust port of the internal combustion engine through a turbocharger turbine and further through a catalyst, an exhaust bypass passage that branches from the main exhaust passage at the upstream side of the turbocharger turbine, bypasses the turbocharger turbine, and merges with the main exhaust passage before the catalyst at a turbine downstream side, and an exhaust bypass valve provided in the exhaust bypass passage, wherein the control system controls an ignition timing in accordance with at least one of an engine warm-up state and a catalyst warm-up state, until warm-up of an internal combustion engine body and the catalyst is completed, and wherein the control system causes the exhaust bypass valve to open to warm-up the catalyst when the ignition timing of the internal combustion engine is retarded to a timing equal to or greater than a predetermined ignition timing.