[1]. A better understanding of biodiesel’s influence can be gained
through recent publication dealing with combustion characteristics,
pollutant emissions, and the behavior of the entire injection
system. The interest in studying the effect of biodiesel on the injection
system pertains to the fact that mass flow rate variations at
the injectors are responsible for variations of pollutant emissions
such as NOx [2]. It is known that the operating conditions of a common-
rail diesel injection system generates a pressure wave in the
injector’s feed pipe [3–5], which can modify the mass flow rate
delivered by the injector. Therefore, fuel properties affecting these
pressure waves will influence the injection process and, therefore,
the total mass injecte