Fuel-injection control system for an internal combustion engine
US4706634A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 13, 1986 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Nov 13, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/105
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A novel and improved fuel-injection control system for an internal combustion engine capable of effecting minute or fine revisions of acceleration of an engine by appropriately processing an output signal from an AFS without employing a throttle sensor for detecting the opening degree of a throttle valve. The width of a basic injection pulse is calculated from the amount of intake air sucked into an internal combustion engine and the number of engine revolutions so that between the injection pulses synchronized with the number of engine revolutions, a series of special injection pulses having the calculated pulse width are generated for revision of engine acceleration. The fuel-injection control system comprises: an arithmetic operation means for calculating an engine load from the amount of intake air sucked into the engine and the number of engine revolutions; a judging means for judging whether or not a parameter representative of the engine load is less than a predetermined reference value; a first pulse-generating means adapted to generate a first special injection pulse in response to the amount of the suction air when the judging means judges that the parameter is less than …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.