| 摘要 |
<p>PROBLEM TO BE SOLVED: To set intake outflow resistance in switching between a low speed side driving condition and a high speed side driving condition small for securing high intake charge efficiency. SOLUTION: Branch intake passages 11-14 of this intake device 7 are provided with first outlet parts 11a-14a and second outlet parts 11b-14b formed in a surge tank 10, first intake passages 11c-14c extended from the first outlet parts 11a-14a, and second intake passages 11d-14d extended from the second outlet parts 11b-14b to be combined with first intake passages 11c-14c. The first outlet parts 11a-14a and the second outlet parts 11b-14b can be selectively closed by a rotary valve 20 installed on the surge tank 10. In changing between the low speed side driving condition and the high speed side driving condition, both the first outlet parts 11a-14a and the second outlet parts 11a-14a are partially opened.</p> |
