Device for camshaft control

US4481912A · kind A · utility

Assignee

• Firma Atlas Fahrzeugtechnik GmbH · DE

Inventors

• Andreas Stwiorok · Cologne, DE
• Dieter Stojek · Bensberg, DE
• Reinhold Blauhut · Werdohl, DE
• Burkhard Brandner · Werdohl, DE
• Manfred Knuefelmann · Goldkronach, DE

Key dates

• Filing date: Jul 8, 1982
• Grant date: Nov 13, 1984
• Expiry date: Jul 8, 2002

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A device for the angular adjustment of a camshaft of a combustion engine according to speed and load conditions and to the angular position of the camshaft with respect to a driving wheel being controlled by an adjustable mechanism. The technical problem is the angular adjustment of the single or multiple camshafts with respect to the crankshaft according to speed and load conditions. Tooth pulses, or counting pulses, corresponding to the angular position of the crankshaft (2) and reference pulses corresponding to a particular angular reference position (singular tooth) are generated by a transducer, or pulse generator, controlled by the toothed ring associated with the crankshaft and the ignition circuit (13). An address counter (10) is reset by the reference pulses and incremented by the tooth pulses so that the output of the counter provides digital address signals corresponding to the actual angular position of the crankshaft (2). The output signals of the address counter and digital signals corresponding to load conditions are input to a correction processor with memory, (20) the output of which provides a camshaft adjustment signal. During pre-set engine operational periods, …