Method and system for controlling operation of an apparatus or engine, particularly internal combustion engine

US4677558A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Heinz Bohmler · Pleidelsheim, DE
• Rolf Daumer · Laichingen, DE

Key dates

• Filing date: Jan 17, 1985
• Grant date: Jun 30, 1987
• Expiry date: Jan 17, 2005

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F8/654
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

To permit change of data, to be used in a fixed program carried out by a microprocessor (1) in accordance with a stored program (2), upon change in operating characteristics of a controlled apparatus (M), for example an internal combustion engine, an erasable programmable read-only memory (3) is provided, which is external to the microprocessor (1). The external memory (3) forms a combined address and data memory having at least one address field (4), and a vector field (5). A constant data field (7) and a table, or function data field (6) are part of the external memory (3), which data fields contain data to be addressed directly through the address field or via the vector field for not only a single type or series of apparatus, such as ICEs, but also additional engines, or engine characteristics, for example due to aging. In order to run the program by the microprocessor 1, with a changed or aged engine, then, it is only necessary to change the address of the data in the data field and/or the vector field to provide different output data for any given programming step.