Combustion study of hydrogen fueled DI diesel engine: simplified heat release analysis

Experimental investigation of timed manifold injection of acetylene in direct injection diesel engine in dual fuel mode

“…3. Cylinder pressure is slightly lower than diesel during the compression process due to variation in the value of polytropic index, which varied from 1.28 to 1.29 for various gas flow rates [15]. The peak pressure is 72 bar for baseline diesel operation and 73 bar at 240 g/h for TMI operation of acetylene.…”

Study on using acetylene in dual fuel mode with exhaust gas recirculation

“…Cylinder pressure is marginally lower than diesel during the compression process due to variation in the value of polytropic index. It varied from 1.29 to 1.26 for acetylene without EGR and acetylene with EGR [18]. The peak pressure is 72 bar for baseline diesel operation and 79 bar for operation of acetylene without EGR.…”