“…However, it is possible to find the optimal pre-injection time so that the effective power, effective specific fuel consumption, exhaust gases temperature, pressures in cylinders and other important characteristics of engine operation can be at an acceptable level when using B100 compared with diesel [39]. The research [8,14,31,[40][41][42][43][44][45][46] shows that from the aspect of using biodiesel as a Diesel engine fuel and the effects on engine operation, it is important that processes that take place in the fuel supply systems, injection and mixture formation processes, as well as knowledge of biodiesel characteristics that are not prescribed by standards (speed of sound, bulk modulus, surface stress, etc.) are fully studied and clear.…”