| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an intake device for an internal combustion engine in which negative pressure lead-in ports are arranged concentrically, capable of preventing freezing of the ports using negative pressure. <P>SOLUTION: A concentrated port 10 provided at an intake manifold consists of a negative pressure lead-in port 11 for PCV located at the upper stage, a purge air lead-in port 12 and internal pressure sensing negative pressure lead-in port 13 both located at the middle stage, and a negative pressure port 14 for brake located at the lower stage. A bulkhead 15 is provided between the ports 11 and 12 and the ports 13 and 14, and the ports 11 and 12 have passages so as to penetrate the bulkhead 15, while the ports 13 and 14 have passages 16 between them and the bulkhead 15. <P>COPYRIGHT: (C)2003,JPO</p> |
