System for the closed-loop control of the supercharging of an internal-combustion engine

US5551235A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Robert Entenmann · Memmingen, DE
• Stefan Unland · Schwieberdingen, DE
• Matthias Philipp · Stuttgart, DE
• Werner Haeming · Neudenau, DE
• Iwan Surjadi · Leinfelden, DE
• Ulrich Rothhaar · Milano, IT
• Michael Baeuerle · Rutesheim, DE

Key dates

• Filing date: Dec 23, 1994
• Grant date: Sep 3, 1996
• Expiry date: Dec 23, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a system for the closed-loop control of the supercharging of an internal-combustion engine, a manipulated variable is produced by means of a controller in dependence upon the deviation between a desired supercharging and an actual supercharging. With this manipulated variable, a final controlling element is triggered, which influences the supercharging of the internal-combustion engine. The controller parameters of the controller are repeatedly optimized. To this end, a model for the internal-combustion engine is specified, inclusive of a charging device, and the model parameters are determined from the manipulated variable and the actual supercharging. Controller parameters are determined from the model parameters and relayed to the controller. Moreover, in certain operating states, the controller parameters are stored in start-up characteristic maps. The start-up characteristic maps supply the initial values for the controller parameters each time the closed-loop control is activated.