Performance of Leaded LP-Gas in an EMD-567 Dual Fuel Engine

Data presented were obtained in an EMD 2-567 dual fuel engine when operated with leaded and unleaded LP gas. This study shows that, at the standard dual fuel engine compression ratio, knock limited power using a high propane content LP gas containing 3.18 gr/gal varied from 79–93% of full load diesel power, depending on engine speed. When the compression ratio was reduced from 13.6:1 to 11.9:1, full load diesel power was exceeded by 7–23%, depending on engine speed when using the same leaded LP gas.