Análise comparativa entre a adaptação industrial e as metodologias de conversão dual fuel desenvolvidas na UFPB

Abstract

This study presents a comparative analysis between the industrial High Pressure Direct Injection (HPDI) technique and the low-cost methodologies developed at the Federal University of Paraíba (UFPB) for converting diesel engines to dual fuel operation. This is a comparative study, based on a bibliographic review, that investigates the technical and economic viability of these approaches as alternatives to reduce operational costs and the environmental impact of the national fleet. The main objective is to compare the conversion processes, focusing on the differences, advantages, and disadvantages of each technology. The methodology employs an analytical-comparative review of case studies, detailing the HPDI system and the evolution of fumigation adaptations at UFPB, from manual control in mechanical engines to the development of customized electronic controllers. The results show that while HPDI technology ensures high efficiency across the entire operating range, the UFPB approaches demonstrate their greatest benefit in medium to high power regimes, achieving diesel substitution rates of up to 97% and cost savings of up to 53%. It is concluded that the dual fuel conversion is a strategic alternative whose viability is linked to the engine's usage profile, establishing itself as an effective solution for applications that operate predominantly under high and constant load, such as generator sets and road transport vehicles.