| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an intake system structure of an internal combustion engine capable of accurately detecting an EGR quantity. <P>SOLUTION: An air-fuel ratio sensor (18) is provided in a bending part (16a) of an intake manifold (16), an EGR passage (30) is connected in the direction of becoming the outside of the bending part (16a) being the upstream side of the bending part (16a), and EGR gas is introduced from an introducing port (30a). A premixing adjusting plate (17) is arranged in the intake manifold (16) so that the introducing port (30a) and a plate part (17a) overlap in an introducing port (30a)-direction view. The premixing adjusting plate (17) is movably arranged in the EGR gas introducing direction via plate spring parts (17b) arranged in both end parts of the plate part (17a). An expansion/contraction degree of the plate spring part (17b) is detected by a strain gauge (17c) arranged in the plate part 17a, and a moving degree of the plate part (17a) is calculated based on the detecting result. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
