Feasibility study of Gyroid recuperator applied to enhance fuel efficiency in four-stroke internal combustion engine: an experimental analysis
摘要
This study concentrates on harnessing waste heat from high-temperature exhaust gases generated by four-stroke internal combustion engines during energy conversion to diminish fuel reliance. The chosen waste heat recovery device, the Gyroid recuperator, represents an innovative design, demonstrates exceptional performance, and holds significant potential for aerospace and other industrial applications. This Gyroid recuperator was successfully manufactured using selective laser melting (SLM) technology. This study investigated the fuel consumption rate and thermal efficiency using a recuperator and propeller and compared the results to those without the recuperator and propeller. Experimental results illustrate that implementing the Gyroid recuperator system in a four-stroke internal combustion engine operating at 7,000 RPM reduces the fuel consumption rate by an impressive 24.29%, resulting in an actual fuel consumption of 0.0517 g s−1. Additionally, a Gyroid recuperator with propeller tests at 3,000 RPM reveals a 22.22% reduction in fuel consumption, with an actual fuel consumption of 0.0350 g s−1. At 6,000 RPM, the thermal efficiency reaches 17.6%, indicating a potential enhancement of up to 2.51%. These findings signify substantial advancements in multiple performance metrics, effective waste heat recovery, and reduced energy wastage. Hence, adopting the Gyroid recuperator system for four-stroke internal combustion engines emerges as a promising research avenue to reduce fuel consumption and enhance engine efficiency.