Process for controlling a direct-injection internal combustion engine
US5775295A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1997 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Mar 12, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for controlling a direct injection internal combustion engine by measuring both the degree of actuation of an accelerator pedal and the engine speed to provide optimal engine tuning parameters. According to the method, a table showing the pressure/air temperature ratio in the intake manifold is established, during engine tune-up, for each degree of actuation/speed pair. The pressure and temperature of the intake air are measured during normal operation, and the measured pressure/temperature ratio is formed. The opening angle of a throttle in the intake manifold is adjusted to make the ratio dependent on a set value read out of the table. Reverse reading of the table is performed to determine a virtual degree of accelerator pedal actuation on the basis of the measured speed and ratio, thereby providing at least one of the optimal engine tuning parameters.,
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.