Intake system for internal combustion engine
An intake system for an internal combustion engine is described having a cylinder head defining in part a variable volume chamber, an inlet port extending from an inlet opening in one side of the cylinder head and serving the chamber, a first intake passage affixed to the one side of the cylinder head and serving the inlet port opening. The first intake passage extends outwardly of the one side of the cylinder head and forms an extension of the inlet port. A second intake passage serves the inlet port and has a first U shaped section communicating at one end with the first intake passage and communicating at its other end with a generally straight section extending across the cylinder head and terminating at an opposite side of the cylinder head. The second intake passage has a substantially greater length than the first intake passage, throttle valve means for selectively controlling the flow through the intake passages, and a common inlet device for supplying air to both of the intake passages.
- Assignee:
- Yamaha Hatsudoki Kabushiki Kaisha
- Patent Number(s):
- US 4727829
- OSTI ID:
- 5139345
- Country of Publication:
- United States
- Language:
- English
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Intake system for internal combustion engine
Intake port structure for an internal combustion engine