Riassunto analitico
This study presents a comparative analysis of two biodiesel blends, B7 and B15, on a light-duty commercial diesel engine. Experimental investigations were conducted at the AVL Technical Centre Italy, utilizing an engine test bed within a controlled environment. The research focuses on evaluating the effects of substituting B7 with B15 on diesel engine-out emissions, combustion characteristics, and overall performance.
Initially, two critical operating points, namely maximum torque and maximum power, under full load conditions were examined. Subsequent analysis revealed subtle yet consistent differences in combustion behavior, engine performance, and emissions between the two biodiesel blends.
Furthermore, a comprehensive comparison of the engine maps was conducted. By overlaying the Worldwide Harmonized Light Vehicles Test Procedure (WLTP) and Real Driving Emissions (RDE) cycles onto the engine maps, predominant operating points were identified. These operating points are representative of conditions encountered during both homologation cycles and real-world driving scenarios.
Finally, the combustion characteristics, emissions profiles, and performance metrics associated with these identified operating points were thoroughly analyzed. The findings contribute to a better understanding of the implications of utilizing B15 biodiesel blend in light-duty commercial diesel engines, particularly in terms of emissions control and engine performance optimization.
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