Intake manifold for multi-cylinder internal combustion engines
An intake manifold is described for a multi-cylinder internal combustion engine having at least one row of cylinders with intake ports aligned in a longitudinal direction, comprising, a plurality of separate intake passages with one such passage connected to each intake port. The intake passages extend generally longitudinally in one direction from the intake ports with portions extending beyond a plane defining a side end of the engine and being curved about a laterally extending axis substantially perpendicular to the longitudinal direction located beyond the plane defining the side end of the engine. Wall means cooperate with the curved portions of the intake passages to form an intake air distribution chamber. Each intake passage has an upstream end open into the distribution chamber. A separate bypass passage extends from an intersection with each intake passage at a downstream portion thereof to the distribution chamber and is of a shorter length than an upstream portion of that intake passage from the intersection to the upstream end. Valve means selectively open and close the bypass passages.
- Assignee:
- Honda Giken Kogyo Kabushiki Kaisha, Tokyo
- Patent Number(s):
- US 4669428
- OSTI ID:
- 6365588
- Resource Relation:
- Patent File Date: Filed date 5 Sep 1984
- Country of Publication:
- United States
- Language:
- English
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