Intake port configuration for an internal combustion engine
US6550447B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2002 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Jan 25, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An intake port configuration (1) for an internal combustion engine wherein the swirl (D) of at least one intake flow entering the combustion chamber via an intake port controlled by an intake valve (5) can be varied, two or more flow paths are associated with at least one intake port, which paths join in the valve region (4), and the flow rate (Q) in at least one of the two flow paths is variable by means of a control element (9), and the two flow paths are constituted by two completely separate intake passages, i.e., a primary passage (2) and a secondary passage (3), the primary passage (2) having a helical form. In order to obtain a high flow rate (Q) at a high swirl level in addition to a wide range over which the swirl D may be varied, the intake valve axis (5a) intersects or is tangent to the secondary passage (3) at least at one point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.