Throttleless Otto-Cycle Natural Gas Engine Experiments. Final Report, July 1989

摘要

The throttleless Otto-cycle natural gas engine (TONE) control concept can potentially improve the part-load fuel economy of gas-fueled homogeneous-charge internal combustion engines by reducing the impact of throttle losses. The experimental apparatus and test procedure are described; original data and preliminary test results are included. Results with a Ford LSG423 engine show that for inlet temperatures of 675 degrees F and above with lean fuel mixtures, the exhaust gas temperature was below the heated inlet air temperature. An external heat source would be required for operation in this region of the TONE map.