**Effect of Waste Cooking Oil Biodiesel Blends on Effect of Waste Cooking Oil Biodiesel Blends on**

#### **Performance and Emissions from a CRDI Diesel Engine Performance and Emissions from a CRDI**

10.5772/intechopen.69740

Giancarlo Chiatti, Ornella Chiavola and

Erasmo Recco Giancarlo Chiatti, Ornella Chiavola and Erasmo Recco

**Diesel Engine**

Additional information is available at the end of the chapter Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/intechopen.69740

#### **Abstract**

The employment of biofuels in blends with diesel oil proved to attain a reduced environmental impact without compromising the engine performance. Among biofuels, waste cooking oil offers the advantages of its reduced raw material cost in comparison with fresh vegetable oil cost; it also eliminates the environmental impacts caused by its disposal. Although a great number of researches has been devoted to biodiesel combustion in engines and pollutant emissions, few studies can be found on light duty diesel engine equipped with up-to-date technologies. This work aims at investigating the impact of waste cooking oil percentage in blends with diesel oil on the performance and emission characteristics of an up-to-date light and compact common rail diesel engine whose main application is in microcars and in urban vehicles. A comprehensive experimental activity was performed in the engine complete operative field. The comparison of the results with those obtained with standard ultralow-sulfur diesel highlighted that the engine performance was quite similar for B20 and diesel oil. B40 suffered for the lower caloric value in regard to diesel. A reduction in CO and HC was obtained with biodiesel blends, along with an increase in NO<sup>x</sup> . Particulate emissions were also reduced for biodiesel blends; the mean size of particles was smaller as regards diesel oil.

**Keywords:** diesel engine, biodiesel blend, waste cooking oil, pollutant emission, particulate emission

and reproduction in any medium, provided the original work is properly cited.

© 2018 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

© 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution,
