Control of an internal combustion engine with reference to a combustion chamber sensor

US4487184A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Bernward B/o/ ning · Leinfelden, DE
• Rainer Bone · Leinfelden, DE
• Rudolf Nagel · Asperg, DE
• Franz Sellmaier · Schwieberdingen, DE

Key dates

• Filing date: Jul 7, 1983
• Grant date: Dec 11, 1984
• Expiry date: Jul 7, 2003

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The output of a combustion chamber sensor is analyzed in two succeeding time intervals defined in term of crankshaft position by use of a reference mark. The sensor output is compared with prescribed threshold values in the respective intervals, and a logic circuit recognizes whether normal combustion, slow combustion or a combustion failure is present and an engine control, such as fuel injection or ignition timing, or a combination of both is modified accordingly.