CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE EQUIPPED WITH TURBOCHARGER

摘要

Applied in an internal combustion engine (1) includes a turbocharger (7); a exhaust gas purifying catalyst (10) which is arranged at a section downstream of a turbine ('7b) in the exhaust passage (4) ; and a low pressure EGR passage (31) which connects a section downstream of the exhaust gas purifying device (10) in the exhaust passage (4) and a section upstream of a compressor (7a) in the intake passage (3). The compressor (7a) is provided with a movable vane mechanism (17) capable of varying throttled quantity of a flow passage of intake gas by moving diffuser vanes (18). The movable vane mechanism (17) is controlled so that the throttled quantity of the flow passage is decreased when the exhaust gas is led to the compressor (7a) via the low pressure EGR passage (31) as compared with a case when the exhaust gas is not led to the compressor (7a).