Comparative Study of Performance and Emission Characteristics between Spark Ignition Engine and Homogeneous Charge Compression Ignition Engine (HCCI). Al-Khwarizmi Engineering Journal, [S. l.], v. 12, n. 4, p. 102–110, 2017. DOI: 10.22153/kej.2016.06.003. Disponível em: https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/324.. Acesso em: 5 may. 2024.