| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust gas reflux device for an engine with a supercharger capable of performing EGR sufficiently and enlarging an operation region for performing EGR even when there is the operation region in which intake pressure becomes higher than exhaust pressure such as, in particular, a low speed high load region in the supercharging engine. <P>SOLUTION: In this exhaust gas reflux device for the engine with the supercharger provided with an EGR passage 7 for leading a part of exhaust gas into an intake passage 6 as EGR gas from an exhaust passage 3 and the supercharger 4 for supercharging intake air, an EGR booster 8 for feeding EGR gas into the intake passage under pressure by utilizing intake pressure is provided in the EGR passage, and the intake passage is divided into a first passage 6a provided with a turbine of the EGR booster and a second passage 6b provided with a variable throttle valve 19 for controlling flow rate of high pressure intake air led into the turbine on the downstream side of the supercharger. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
