Control system for internal combustion engine
US5022357A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 26, 1989 |
| Grant date | Jun 11, 1991 |
| Priority date | — |
| Expiry date | Dec 26, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control system for controlling an internal combustion engine having intake and exhaust valves and a fuel supply unit for supplying fuel into an intake port includes electromagnetic actuators for selectively opening and closing the intake and exhaust valves under electromagnetic forces. An opening or valve lift of the intake valve for obtaining a necessary amount of intake air and an amount of fuel to be injected are calculated on the basis of engine load conditions. The electromagnetic actuators and the fuel supply unit are controlled on the basis of the calculated valve opening and amount of fuel to be injected for thereby controlling the air-fuel mixture ratio of an air-fuel mixture introduced into an engine cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.