 Thermoelectric generators have the potential to significantly improve the efficiency of combustion engines by converting waste heat from their exhausts into electricity. This paper proposes a simulation-based approach to optimize the design of such systems, which could lead to greater efficiencies than current models. The results show that the proposed system has the potential to generate up to 120 watts of power at 5.8% efficiency, representing an improvement of up to 3% over existing designs. This article was authored by Anderson Luis Oliveira Marana, Camilo Andres Guerrero-Martin, Eric Montes Páez, and others.