Control device for internal combustion engine
US9945306B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2015 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | May 15, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
There is provided an art of performing correction of a coefficient in a model calculation formula of an intake valve model that is applied to an internal combustion engine including a turbocharger, in a wide engine operation region. An amendment value α of a map value a in a correction value calculating operation region is calculated (step 10), and a straight line expressing a relation of a turbocharging pressure Pcmp and a cylinder air filling rate KL is calculated (step S14). A point (Pcmpn, KLn) on the calculated straight line is specified (step S16), and correction of the map value a is performed (step S18). Thereby, a correction value a′ of the map value a in an operation region that differs in the turbocharging pressure Pcmp from the correction value calculating operation region is calculated. Similarly, the correction value a′ of the map value a in an operation region that differs in valve opening timing EXVT from the correction value calculating operation region, and the correction value a′ of the map value a in an operation region that differs in an engine speed NE from the correction value calculating operation region are calculated (steps S20 and S22).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.