Internal combustion engine cylinder head variable swirl siamese type intake port structure
This patent describes a variable swirl siamese type intake port structure for an internal combustion engine cylinder head formed with a combustion chamber to which a spark plug having an ignition point is provided. The method comprises: a first generally straight intake passage which leads to a first intake port opening to the combustion chamber and a second generally helical intake passage which leads to a second intake port, also opening to the combustion chamber, formed with a helical end vortex portion; a control valve fitted in the first generally straight intake passage at an upstream portion thereof so as to control its flow resistance; and: a substantially straight auxiliary passage, opening from a point upstream of the control valve to a point near the downstream end of the first intake port and bypassing the control valve.
- Assignee:
- Toyota Jidosha Kabushiki Kaisha, Aichi
- Patent Number(s):
- US 4669434
- OSTI ID:
- 6484685
- Country of Publication:
- United States
- Language:
- English
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Internal combustion engine cylinder head variable swirl siamese type intake port structure with bypass passage from straight intake passage communicated by gap to helical intake passage
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Related Subjects
330101* -- Internal Combustion Engines-- Spark-Ignition
COMBUSTION CHAMBERS
CONTROL EQUIPMENT
CYLINDERS
DESIGN
DISPERSIONS
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
HEAT ENGINES
IGNITION
IGNITION SYSTEMS
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
MECHANICAL STRUCTURES
MIXTURES
OPERATION
SPARK IGNITION ENGINES
VALVES
VORTEX FLOW