The change of engine energetical indicators due to biobuthanol, can be compensated with advanced ignition angle.
Martynas Damaševičius, Alfredas Rimkus, Mindaugas Melaika, Jonas Matijošius 2016, 'Biofuel and hydrogen influence for operation parameters of spark ignition engine /Biodegalų ir vandenilio įtaka kibirkštinio uždegimo variklio veikimo rodikliams',Mokslas: Lietuvos Ateitishttp://journals.vgtu.lt/index.php/MLA/article/view/2537. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)