RT journal article
T1 Experimental investigation and modelling of biodiesel combustion in engines with late direct injection strategy
A1 Vélez Godiño, José Antonio
A1 Torres García, Miguel
A1 Jiménez-Espadafor Aguilar, Francisco José
A2 Máquinas y Motores Térmicos
K1 Biofuels
K1 Biodiesel
K1 Brassica napus
K1 Low-temperature combustion
K1 Predictive model
AB The combination of alternate fuels, such as biodiesel, and low-temperature combustion (LTC) constitutesa promising solution to reduce pollutant emission and to avoid dependence on fossil fuels.However, this concept requires additional research to optimise LTC of biodiesel over wider operatingranges, specifically including the implementation of numerical models to assist in the developmentof these engines. In this work, an experimental analysis was carried out assessing both thermalperformance and emissions derived from the LTC of diesel/biodiesel blends with late direct injection.Furthermore, this analysis allowed implementing a predictive tool to characterise in-cylinder pressuretrace under this operation strategy. This model was coupled with an empirical law to simulate heatrelease during the combustion process. Least squares method was applied to fit this empirical lawto experimental data involving different conditions in terms of percentages of rapeseed biodiesel inthe fuel blend, rotational speed, fuel/air equivalence ratio and percentages of external exhaust gasrecirculation. To build the predictive model, a multiple regression methodology was used to correlatethe law parameters with the operating conditions. Finally, a validation process based on the simulationof in-cylinder pressure trace was developed, revealing that the predictions agreed well with theexperimental data. This suggests that the proposed model is able to satisfactorily predict the LTC ofdiesel/biodiesel blends within the test range.
PB ELSEVIER
SN 2352-4847
YR 2022
FD 2022-11
LK http://hdl.handle.net/10498/27053
UL http://hdl.handle.net/10498/27053
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-nov-2026