Biodiesel versus diesel: A comparative analysis of the effect of engine cycling on efficiency

The Effect of Bio-Fuel Induced Bsfc Curve Perturbations on Realizable ICE Efficiency Using Cycling

“…The here introduced concept builds on the work in Bauer PH et al [11] where for the first time, an analysis was carried out that showed the conditions under which operating point switching provides efficiency advantages in Bio-Diesel fuelled engines, given the complete knowledge of the bsfc field for regular Diesel and Bio-Diesel In a method to gauge fuel efficiency of cycled ICEs with two operating points was introduced [1]. The results in Bauer PH et al & Ehsani M et al [11,12] show how one can use bsfc results on cycling for regular Diesel fuel and extrapolate to Bio-Diesel. The results were based on the difference between the regular Diesel bsfc curve and the relationship to Bio-Diesel in conjunction with a number of simplifying assumptions.…”

“…The highest efficiency gains obtainable from cycling between two operating points are most often generated if one operating point is the global bsfc minimum and the other is close to zero power [1]. Previous work has addressed the problem of achievable efficiency gains through cycling for bio-fuels [11], albeit under the assumption of exactly known bsfc dependencies for both, regular Diesel and Bio-Diesel. Conditions under which the efficiency advantages of cycling for regular Diesel carry over to the case of Bio-Diesel were formulated.…”