Intake air-flow control device for an internal combustion engine
US5823163A · kind A · utility
9Cited by
7References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 19, 1997 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Mar 19, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D11/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An intake air-flow control device for an internal combustion engine is disclosed. The device comprises an intake air-flow control valve provided for every cylinder of the engine, a negative pressure actuator for opening the intake air-flow control valve from a partly opened condition to a fully opened condition when a negative pressure is supplied to the negative pressure actuator. When a current engine load becomes higher than a predetermined value, the negative pressure is supplied to the negative pressure actuator. During rapid acceleration, the predetermined value is changed to lower.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.