20.500.12556/RUL-126918 Operational stability of a spark ignition engine fuelled by low H2 content synthesis gas thermodynamic analysis of combustion and pollutants formation The paper focuses on the implementation of a comprehensive and robust optimization procedure for a synthesis gas fired four-cylinder, spark ignited, 2.2 L industrial engine used in combined heat and power applications. Innovatively designed workflow is for the first time incorporating also a thorough operational stability analysis for evaluation of the engine operation durability while using off-design fuels. Design constraints of the engine operational space are set after in depth investigation of knock phenomena, cycle to cycle variations, emission formation phenomena and engine performance parameters. These are derived from experimental data, obtained from the engine, equipped with newly designed components. Throughout the paper, results obtained with synthesis gas are benchmarked to natural gas. With significant emphasis laid on analysis of lean operation conditions, as a measure to reduce environmental footprint of energy generation, a newly proposed optimum operation points reveal a possibility to obtain TA-Luft and EPA emission limits already with stoichiometric mixture. This allows to achieve a remarkably low power de-rating factor of only 16.5% and omission of any aftertreatment system. Therefore, findings of this study represent a significant improvement of current control strategies and enable further increase in specific power and thus economic attractiveness of distributed power generation techniques at enhanced durability while using low-carbon and renewable fuels. synthesis gas spark ignition engines thermodynamic combustion analysis knock detection cycle-to-cycle variations operational stability sintezni plini motorji s prisilnim vžigom termodinamska analiza zgorevanja klenkanje ciklične variacije stabilnost delovanja true false true Angleški jezik Slovenski jezik Članek v reviji 2021-05-10 13:54:17 2021-05-10 13:54:22 2025-03-14 10:32:55 0000-00-00 00:00:00 2020 0 0 Str. 1-23 art. 116457 Vol. 261 Feb. 2020 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 2019-09-27 2019-10-18 2020-02-01 2022-02-01 621.4(045) 0016-2361 10.1016/j.fuel.2019.116457 16879643 RAZ_Kravos_Andraz_2020.pdf RAZ_Kravos_Andraz_2020.pdf 1 5A568717F40DB757AB321149EF55B4B8 3e534894200ec4ecd873351a920363895db83f16805f1722e96b576b19887eb7 89a123c0-b187-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=143059 https://www.sciencedirect.com/science/article/pii/S0016236119318113 1 6d2d7a8e-b186-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=143057 Fakulteta za strojništvo 0 0 0