**5. Conclusions**

Thus, this present chapter strongly concludes that the overall engine characteristics of a biodiesel is contributed by its FAEs; and are influenced by their molecular properties including their chain length and unsaturation. Accordingly, engine characteristics, which includes their performance, combustion and emission characteristics of WaFO biodiesel were influenced by its dominant FAEs, and following were the key conclusions deduced from the above study:


Based on these conclusions, it is again evident that FAEs decide the overall engine characteristics of their biodiesel; and this work can be used as a preliminary guideline for deciding the idle feedstock for producing biodiesel, which meets the requirement of the engine's output and application.

*Molecular Contribution of Fatty Acid Esters in Biodiesel Fueled CI Engines DOI: http://dx.doi.org/10.5772/intechopen.102956*
