Intake system for internal combustion engine
This patent describes an intake system for an internal combustion engine having engine sections for utilizing the interference effect between engine sections to increase an intake charge for at least two engine sections, comprising first intake passage means connected to a first intake port of one engine section of the at least two engine sections, second intake passage means connected to a second intake port of another engine section. The first and second intake passage means being communicated with each other by communicating passage means and having portions upstream of the communicating passage means which join each other at a junction portion. The first and second intake passage means and the communicating passage means being arranged so as to have a substantially common axis in the vicinity of the communicating passage means, the junction portion being communicated with the atmosphere and valve means for opening and closing the communicating passage means in accordance with an engine operating conditions, the valve means being located within the communicating passage means and near the first and second intake passage means. The valve means when closed providing a first passage between the first and second intake ports, the first passage comprising the first and second passage means in their entirety including the junction portion.
- Assignee:
- Mazda Motor Corp., Hiroshima
- Patent Number(s):
- US 4756284
- OSTI ID:
- 6528917
- Resource Relation:
- Patent File Date: Filed date 21 Jan 1987
- Country of Publication:
- United States
- Language:
- English
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