Martin Alperstein

Texaco Controlled-Combustion System-Multifuel, Efficient, Clean and Practical

Abstract The Texaco Controlled-Combustion System, a stratified charge concept utilizing a coordinated arrangement of air swirl, fuel injection and positive ignition, has been shown over many years of development in numerous engine conversions to produce excellent fuel economy, inherently low exhaust emissions and the ability to prevent combustion knock without regard to fuel octane or cetane number. Recent work has demonstrated the capability of the system to meet the very stringent emission levels of the 1976 U.S. Federal Standards for light duty vehicles and the potential to maintain these levels during 50,000 miles of testing.

Combustion Gas Sampling Valve

A valve suitable for extracting a sample of high temperature, high pressure gases and introducing this sample into a low pressure regime has been developed and successfully operated for two years. Slow combustion reaction studies in a normally‐fired spark‐ignition engine are being accomplished with the aid of this gas sampling valve located in the combustion chamber end‐gas region. The valve exhibits excellent sealing, achieves choked flow conditions, and permits sampling times on the order of 1 msec. The construction, operation, and monitoring of this gas sampling valve are described.