Method and system incorporating zero-correction for fuel supply control for internal combustion engine
US4677954A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1986 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | Mar 7, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine fuel supply system has a main conduit which supplies fuel into an intake passage, a means for regulating fuel flow through this main conduit through a range of values according to the value of a control signal with the fuel flow provided when the control signal is zero being a basic non zero value, a power conduit which selectively supplies fuel into the intake passage, and a means for opening or closing the power conduit. When the power conduit is closed: a basic value Sb for the main conduit control signal is determined according to engine operational parameters; a value Sn is added to Sb; a multiplicative correction is applied; and the main conduit control signal value is determined by subtracting Sn. But, when the power conduit is open: again, a basic value Sb for the main conduit control signal is determined according to engine operational parameters; Sn and a value Sp are added to Sb; a multiplicative correction is applied; and the main conduit control signal value is determined by subtracting Sn and Sp. Here, Sn represents the main conduit control signal value which would be required, in a virtual sense, for providing the basic main conduit flow value from a zero f…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.