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Digital Electronic Spark Advance Systems
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English
Abstract
In view of emission regulations and other requirements, maintenance-free ignition systems with sophisticated advance characteristics of high accuracy and stability are of great interest. Although recently introduced transistorized ignition systems with breakerless pick-up systems have improved the situation significantly, there is still need for improvements as regards to
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1.
Introduction of further parameters controlling the advance characteristic in addition to speed and load, i.e. temperature.
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2.
Higher complexity of advance curves.
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3.
No changes in timing due to wear of mechanical parts of the advance mechanism.
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4.
Increased accuracy of timing by pick-up at flywheel.
The paper describes the features of digital spark advance systems which offer the above mentioned advantages. It deals with three different systems, i.e.:
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1.
Special purpose computer with integrated data memory.
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2.
Special purpose computer with separate data memory, that is also accessible for other systems.
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3.
Special purpose computer without any memory.
The characteristics of these systems are discussed.
Authors
Citation
Manger, H., "Digital Electronic Spark Advance Systems," SAE Technical Paper 760265, 1976, https://doi.org/10.4271/760265.Also In
References
- Buschmann H. Koeßler P. “Handbuch für den Kraftfahrzeugingenieur” Deutsche Verlagsanstalt Stuttgart 1973 915
- Bussien “Automobiltechnisches Handbuch” Technischer Verlag Herbert Cram Berlin 1965 413
- Siebert H. P. “Digital gesteuertes Zündsystem für Verbrennungsmotoren” Elektronik 1973 321 324