The study aims to present the combustion and exhaust behaviors of a 3 L. four-cylinder common rail diesel engine with three different kinds of conventional B7 diesel fuels with and without a platinum diesel oxidation catalyst (DOC) system and non-catalytic partial flow through a diesel particulate filter (P-DPF). Testing is performed under the three different operating conditions. idl... https://parisnaturalfoodes.shop/product-category/shea-nut-oil/