Regulating the mode of operation of an internal combustion engine

US7219003B2 · kind B2 · utility

Assignee

• Conti Temic microelectronic GmbH · DE

Inventors

• Reinhold Hagel · Pinzberg, DE
• Stephan Krell · Schwabach, DE
• Peter Schimmelpfennig · Erlangen, DE
• Mehmet Tuna · Bad Mergentheim, DE

Key dates

• Filing date: Jun 14, 2003
• Grant date: May 15, 2007
• Expiry date: Aug 13, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2250/18
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Combustion failures of an internal combustion engine are controlled in closed loop fashion by sampling an engine r.p.m. to obtain a speed signal. The speed signal is subjected to a Hartley-Transformation to obtain angular frequencies or engine orders which are further processed to identify the cylinder which had a combustion failure and thereby reduced an actual engine power output compared to a rated power output. A power output correcting signal is produced and supplied to the engine. The system for performing these steps includes at least a speed signal sampler, a frequency analyzer to perform the Hartley-Transformation, a cylinder identifier or classifier and a controller which supplies the closed loop control signal to the engine.