In this book, the authors are interested in the design and the implementation of a generator test bench that works with a diesel-biodiesel mixture. The goal is to introduce and test the effect of biodiesel addition in carburant. To do this, the authors started their work through the development of an appropriate design. After completing the preparation of the test bench, the authors installed all the necessary instruments. With this equipment, the overall characteristics of the generator running for the first time with diesel and then with different proportions of biodiesel, capping at 50% were studied. This work is of great importance because it solves the ecological problems mainly related to the toxic rejection of conventional fuels.