Apparatus for controlling a variable-effective-length air intake system
US4793294A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1986 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | Mar 11, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/1824
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The control apparatus is intended for use in controlling a variable-effective-length air intake system of the type which has two volumetric chambers connected, respectively, to two groups of engine cylinders and which incorporates a flow control valve for controlling the communication between the two volumetric chambers to vary the effective length of the intake system in response to the rotational speed and load of an internal combustion engine. The control apparatus comprises a control means that detects the rate of acceleration of the engine and selectively causes the flow control valve to be controlled according to the throttle valve aperture during an accelerating condition of the engine and according to the amount of intake air per one revolution of the engine during steady load condition. Such a selective control improves the responsiveness of the control apparatus during acceleration while ensuring accurate control during a steady load condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.