254 The experimental design was conducted in two equivalent operational phases. In Phase I (baseline), a Scania G500 truck operated under conventional conditions to establish the benchmark for real fuel consumption. In Phase II (test phase), the same model was equipped with a hydrogen addition system. To ensure internal validity, external variables were kept constant, including route length (18 km), payload (25 t), topographic conditions, and driving profile. The results indicate that the baseline vehicle presented an average fuel consumption of 138.6 L/100 km, whereas the vehicle with hydrogen addition achieved 124.7 L/100 km, corresponding to a 10.07% reduction in fuel consumption, representing the primary evidence of improved energy efficiency. Additionally, an increase in average operating speed was observed, from 21.2 km/h to 22.16 km/h, corresponding to a 4.50% improvement, which can be attributed to enhanced combustion efficiency and improved engine dynamic response promoted by hydrogen addition. As a direct consequence, operational productivity also increased, from 1.54 to 1.62 ton/km, resulting in a 5.26% gain in productivity. Figure 2 – Field validation workflow. 4. RESULTS Diesel Consumption and Savings: Diesel fuel consumption constitutes one of the primary components of operational costs in
RkJQdWJsaXNoZXIy MTM0Mzk2