Method for regulating or controlling a supercharged internal combustion engine
US6510691B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2001 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Jun 27, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a method for the closed-loop or open-loop control of a forced-induction internal combustion engine that includes an exhaust turbocharger with an exhaust turbine with varible turbine geometry for the varible adjustment of the effective turbine cross section and with a boost-air compressor, different operating states of the engine are assigned different characterisitic maps with engine-operating and/or engine-state varibles and the turbine geometry is adjusted in accordance with the characteristic maps between an open position and a pressure build-up position. When there is a change in a significant engine parameter, the system switches between two characteristic maps.To optimize the operating behaviour of the engine over all load and engine-speed ranges, two load/engine-speed ranges are defined above and below a specifiable limiting value and each load/engine-speed range is assigned a characteristic map, the current load/engine-speed range is identified by means of the engine parameter, in the lower load/engine-speed range adjustment of the variable turbine geometry is performed by means of open-loop control as a function of the characteristic map assigned to the lower load/engin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.