Internal combustion engine cylinder head variable swirl siamese type intake port structure

Patent · Tue Jun 02 00:00:00 EDT 1987

OSTI ID:6484685

Okumura, T; Iwashita, Y

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
• Resource Relation: Patent File Date: Filed date 21 Jul 1986
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
SPARK IGNITION ENGINES
DESIGN
OPERATION
COMBUSTION CHAMBERS
CYLINDERS
IGNITION
IGNITION SYSTEMS
INTAKE STRUCTURES
MIXTURES
VALVES
VORTEX FLOW
CONTROL EQUIPMENT
DISPERSIONS
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MECHANICAL STRUCTURES
330101* - Internal Combustion Engines- Spark-Ignition