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The Texaco Ignition System-A New Concept for Automotive Engines
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English
Abstract
The Texaco Ignition System (TTIS) is a high frequency system with a bi-directional spark current, the duration of which is a function of crankshaft rotation rather than time. The spark current characteristics differ drastically from those of conventional discharge systems and, as a result, current flow through the plug gap can be maintained under extremely turbulent conditions. Being essentially a constant current device, it prevents excessive plug current flow during initial gap ionization, providing a good plug life; yet it has high average current to increase fuel ignition probability.
The system, developed primarily for use with stratified charge engines, has also been shown to have characteristics which improve the performance of premixed charge engines operated under severe conditions, in order to reduce exhaust emissions, improve driveability and increase fuel economy.
TTIS is of solid state design, and both the spark timing and spark duration are controlled by use of digital logic circuitry.
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Citation
Canup, R., "The Texaco Ignition System-A New Concept for Automotive Engines," SAE Technical Paper 750347, 1975, https://doi.org/10.4271/750347.Also In
References
- Alperstein M. Schafer G. H. Villforth F. J. III “Texaco's Stratified Charge Engine-Multifuel, Efficient, Clean, and Practical.” Paper 740563 SAE Southern California Section Meeting May 1974
- Kirk E. Roger “The Spark in Spark Ignition Natural Gas Engines.” April 1969
- Ford Eric H. “Opto-Electronics Ignition.” Paper 730152 SAE Automotive Engineering Congress Detroit February 1974
- Ryan T. W. Lestz S. S. Meyer W. E. “Extension of the Lean Misfire Limit and Reduction of Exhaust Emissions of an SI Engine by Modification of the Ignition and Intake Systems.” Paper 740105 SAE Automotive Engineering Congress Detroit February 1974