Ignition system for an internal combustion engine

US4794900A · kind A · utility

Assignee

• Atlas Fahrzeugtechnik GmbH · DE

Inventors

• Albert Stubs · Lüdenscheid, DE
• Klemens Kluppel · Neuenrade, DE

Key dates

• Filing date: Dec 29, 1986
• Grant date: Jan 3, 1989
• Expiry date: Dec 29, 2006

Classification

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

Abstract

An ignition system for an internal combustion engine with the following structure: a pulse generator generates synchronously with the crankshaft rotation angle pulses and one reference pulse; within a first angle interval of the crankshaft rotation, for the determination of a speed value, clock pulses are counted and a load value is converted into a multiple-bit value; accordingly a characteristic field storage is sampled; an ignition counter is preset, which delivers, by the counting of angle pulses, a switching pulse for the ignition signal; the speed value and the load value are stored at the end of the time basis in buffers; the characteristic field storage comprises multiple-bit ignition values for the determination of the ignition angle and for the presetting of the ignition counter. The technical problem is the provision of an ignition system, which has a high detection speed so that within the periods available also at high speeds a reliable determination of the ignition value, under consideration of the necessary correction values, is possible. The angle pulses are utilized as clock pulses. A correction field storage contains multiple-bit correction values in temperature/l…