Comparative Performance and Efficiency of EURO VI Heavy-Duty Engines Fueled by Biodiesel, HVO and Diesel

In the last years, road mobility has been changing driven by environmental, energetic, and economy concerns, leading to a growing research and development of new anti-emissions technologies, better fuel management systems and the emergence of new fuels. These concerns encourage to consider the use of biofuels in engines. This work aims to understand how the engine with actual evolved technologies are affected by the use of biofuels. This paper will focus on evaluating several biofuels blends on a 2019 performance diesel EURO VI heavy-duty truck, as to review some injection parameters and fuels properties effects. It was also reviewed the respective fuel properties, standards, and emissions expectations. With the objective of preparing a fuel consumption measurement and a performance analysis, an experimental procedure was developed based on the homologation cycles and processes of heavy-duty truck on a chassis bench roll, testing the following samples: B7, B15, B100 and a HVO15. The powertrain performance results reveal that the fuel which presented higher power values was the HVO15, followed by B0, B7, B15 and B100. On fuel consumption, the smaller results were obtained for B7 and B15, without reasonable differences, followed by B100 and then HVO15, at which, in some measured engine regimes, reveal extremely high fuel consumption. To evaluate the fuel economy performance of neat biodiesel compared to fossil diesel on a real road use, three buses on their daily utilization were analyzed. In this experiment, the biodiesel buses had an increase on fuel consumption about 4,5%.