Method for recognizing the power stroke of a cylinder of an internal combustion engine

US4889094A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Hans-Ernst Beyer · Sachsenheim, DE
• Jorg Bonitz · Mühlacker, DE
• Robert Entenmann · Memmingen, DE
• Siegmar Forster · Schwieberdingen, DE
• Rochus Knab · Kornwestheim, DE
• Walter Kunzel · Ludwigsburg, DE
• Wolfgang Kugler · Karrösten, AT
• Alfred Mahlberg · Freiberg, DE
• Bernhard Miller · Weil der Stadt, DE
• Matthias Philipp · Stuttgart, DE
• Siegfried Rohde · Schwieberdingen, DE
• Stefan Unland · Schwieberdingen, DE
• Walter Viess · Schwieberdingen, DE
• Herbert Winter · Stuttgart, DE
• Jurgen Zimmermann · Salzgitter, DE

Key dates

• Filing date: Nov 23, 1987
• Grant date: Dec 26, 1989
• Expiry date: Nov 23, 2007

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2041/0092
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for recognition of the power stroke of an internal combustion engine is proposed, in which recognition as to whether a cylinder is currently in the power stroke is possible by means of camparison of a signal that is synchronous with the crankshaft angle and a signal that is modulated by the combustion events of the engine.