The main disadvantages of HCCI engines are the knocking tendency at high engine loads, challenge start combustion, control combustion phase, and narrow operating range. In this study, we aimed to processes in expand their working range by improving fuel properties fusel oil addition diethyl ether. Thus, variations in-cylinder pressure, rate heat release, indicated mean effective duration, CA50,...

Abstract Numerical simulations were carried out to study the influence of ozone on Ignition Delay Time (IDT) iso-octane/air mixtures under typical operating conditions HCCI engines. 0-D and 2-D CFD compute IDT characterize compression, combustion, expansion in an engine, respectively. A kinetic model was developed by merging a mechanism for iso-octane, sub-mechanism nitrogen oxides, ozone. The ...

This study examines the possibility to provide control over ignition timing in a homogeneous charge compression engine (HCCI) using fuel additive whose molecular structure can be adapted upon exposure UV light. The molecule has greater influence on retarding than original molecule, hence time modulated expose new is referred as ‘smart fuel’. form of 1,3-cyclohexadiene (CHD), it undergoes electr...