Control apparatus of an intake air amount in an internal combustion engine
US4580536A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1985 |
| Grant date | Apr 8, 1986 |
| Priority date | — |
| Expiry date | Apr 4, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2011/102
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An intake pipe of an internal combustion engine is formed with an air passageway so as to bypass a throttle valve portion and an air control valve to control the amount of the air flowing through this passageway is provided for this air passageway. This control valve is constituted so as to drive an actuator in accordance with the amount of an exciting current and thereby to control the amount of the air which flows through this passageway. An exciting coil of this control valve is heated and controlled by the cooling water of the internal combustion engine. When the internal combustion engine is in the idle operation state and also in the feedback control state, the temperature of the cooling water is detected. In the case where this temperature falls within a specified range, a correction value of a control amount for feedback control to allow the present rotating speed of the internal combustion engine to approach the idle objective rotating speed is calculated and stored. A control amount for open loop control subsequent to this feedback control state is calculated on the basis of this correction value stored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.