| 摘要 |
<p>A multiple-runner intake manifold is constructed of upper and lower parts (180, 60) that fit together at a joint. The upper manifold (180) is molded thermoplastic, and the lower part (60) is molded phenolic. The lower part contains an integral fuel rail (80). The lower part contains a portion of each runner (74A-74F). Those portions (74A-74F) are formed as separate through-passages during molding of the lower part in the cavity of a multi-part mold. The fuel passages are molded as through-holes (82, 84, 86) some ends of which are subsequently plugged by closures (96, 98, 100, 102, 91) and other ends of which receive fittings (90, 92).</p> |
