Generating efficiency and emissions of a spark-ignition gas engine generator fuelled with biogas–hydrogen blends

Effects of EGR on performance of engines with spark gap projection and fueled by biogas–hydrogen blends

“…1. EGR gas was introduced between the intake manifold and the electronic throttle so that it was mixed with the airefuel mixture downstream of the throttle [14,17]. The temperature of the recirculated exhaust gas was cooled to 80e90 C in the cooler located after the valve in the EGR loop, and the amount of exhaust gas (and therefore the EGR rate) was controlled by the EGR valve.…”

Gas emission and efficiency of an engine-generator set running on biogas

“…With load elevation there was a significant increase in engine performance. JEONG et al (2009) found efficiency up to 26% in tests with internal combustion engines.…”

Experimental study of the performance and emission characteristics of an adapted commercial four-cylinder spark ignition engine running on hydrogen–methane mixtures

“…As natural gas is a fossil energy source, an increasing number of papers is appearing on the use of hydrogen/ biogas mixtures. Used biogas comes from the anaerobic digestion of biomass or organic wastes [26][27][28], or is a model gas produced by mixing pure methane and carbon dioxide [29]. The use of gases obtained from the catalytic decomposition of biogas has been also reported [30].…”

“…Park et al [34] used a heavy-duty turbocharged six-cylinder natural gas-fueled Doosan Infracore Inc. engine with a displacement volume of 11 L. Akansu and coworkers [15][16][17] Greek letters a independent term for c p /R in Eq. (4) g molar fraction of methane in the fuel mixture k air-to-fuel ratio ers [28,29] employed a turbocharged gas engine generator with a four-cylinder SI engine fueled with biogas/hydrogen mixtures. Thurnheer et al [22] used a 2 L four-cylinder engine with a compression ratio of 13.5:1 and Wang et al [35] a three-cylinder engine.…”