A Comprehensive Review of the Application Characteristics of Biodiesel Blends in Diesel Engines

Abstract

Since the advent of biodiesel as a renewable alternative fuel, it has attracted wide attention from researchers. The raw materials of biodiesel generally produced by transesterification of animal fats, plants, algae or even waste cooking oil, which makes full use of natural resources and alleviates increasingly problematic oil shortages and environmental pollution. Biodiesel can be directly applied to vehicle engines without any modification and will both improve the combustion quality of the engine and reduce the harmful emissions from the engine. This study mainly summarizes the influence of biodiesel applications on diesel engines, including the impact on engine performance, combustion characteristics, emission characteristics, vibration, noise characteristics, and compatibility. In particular, unregulated emissions such as volatile organic compounds (VOCs) and polycyclic aromatic hydrocarbons (PAHs), which are rarely mentioned in other review articles, are also discussed in this study.

Torque Prediction Model of a CI Engine for Agricultural Purposes Based on Exhaust Gas Temperatures and CFD-FVM Methodologies Validated with Experimental Tests

“…The starting point for the development of such an acquisition system is the individuation of the engine parameters to gather and the assessment of the best data-collection methods to employ. Studies dealing with ICEs [26][27][28][29][30][31][32] usually focus on the following variables, which are the most representative of an engine and its operating conditions: Among all these parameters, this article will focus on the exhaust gas temperature (EGT). Indeed, EGT is one of the most meaningful parameters that can be acquired because it is representative of many phenomena occurring inside the engine (specifically, within the combustion chambers), and it is responsible for the correct operation of the devices located along the exhaust pipeline [33].…”

Polymer Cold-Flow Improvers for Biodiesel

“…However, these additives are fully effective if used in BD/petroleum diesel blends containing no more than 20 vol% of BD. Perhaps, it is exactly blending with petroleum diesel in combination with the use of polymer CFIs that would increase the global use of BD [ 30 ].…”

“…The studies of BD are still extremely significant ( Figure 3 ). Many reviews focus on the synthesis, purification, upgrading, properties and applications of BD [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ]. The problem of improving the CFP of BD was also discussed in a number of reviews [ 6 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 ].…”

The Potential of Waste Cooking Oil B20 Biodiesel Fuel with Lemon Essential Oil Bioadditive: Physicochemical Properties, Molecular Bonding, and Fuel Consumption

“…Alkanes are related to the quality of combustion, alkanes will be degraded to CO2 and H2O when complete combustion occurs. Alkanes become CO or soot due to lack of oxygen so that incomplete combustion occurs [29]. In addition to alkanes, alkenes are also components that can be found in petroleum [30] Esters are one of the carbonyl compounds.…”

“…The specific fuel consumption rises as the engine speed rises and the concentration of lemon essential oil decreases. Lower heating value, density, and viscosity are all linked to specific fuel consumption [29]. The frictional power increases as the engine speed rises, resulting in a higher amount of fuel consumed [14].…”