| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent combustion from becoming unstable due to delay in control of EGR ratio during acceleration/deceleration. <P>SOLUTION: An internal combustion engine with a turbocharger including a turbine 5 arranged in an exhaust passage 3 and a compressor 6 of an intake passage 2 driven by the turbine 5 includes: a throttle valve 10 arranged downstream of the compressor 6 in the intake passage 2; an intake throttle valve 8 arranged upstream of the compressor 6 in the intake passage 2; a fresh air bypass passage 12a for connecting the upstream side of the intake throttle valve 8 in the intake passage 2 with the downstream side of the throttle valve 10; a fresh air bypass valve 12b for adjusting the amount of fresh air arranged in the middle of the fresh air bypass passage 12a; and an exhaust gas recirculating device (an EGR device 25) for recirculating a part of exhaust gas to a place upstream of the compressor 6 in the intake passage and downstream of the intake throttle valve 8 from a place downstream of a turbine 5 in an exhaust passage 3. <P>COPYRIGHT: (C)2012,JPO&INPIT |
