Method and control unit for controlling an internal combustion engine
US9371794B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2011 |
| Grant date | Jun 21, 2016 |
| Priority date | — |
| Expiry date | Aug 15, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method and control system are disclosed for controlling an internal combustion engine having fuel injector(s), a camshaft for actuating inlet and/or outlet valve(s), a valve-train adjusting device for controllable switchover between different valve actuating characteristics, and optionally a camshaft sensor which supplies a camshaft signal representing the camshaft angle, a crankshaft sensor which supplies a crankshaft signal representing the crankshaft angle, and a control unit which controls the fuel injectors to inject predetermined fuel quantities at predetermined injection instants, wherein these stipulations take place as a function of the switching state of the valve-train adjusting device. To obtain information about this switching state, cylinder pressure signal(s) supplied by a cylinder pressure sensor are evaluated with regard to interference signals, and the evaluation result is used in determining the switching state of the valve-train adjusting device for stipulating the fuel quantities to be injected and/or the injection instants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.