Hybrid Power Unit Efficiency in Formula 1: Thermal Management, Energy Recovery Strategies, and Performance Optimization

Formula 1 hybrid power units (HPUs) combine highly optimized internal combustion engines (ICEs) with sophisticated electrical energy recovery systems (ERS) to deliver exceptional performance while meeting stringent efficiency and regulatory requirements. This paper explores the thermodynamic performance, waste heat recovery, and energy deployment strategies of modern Formula 1 HPUs, focusing on the integration between the 1.6 L turbocharged V6 ICE and the MGU-H and MGU-K motor-generator units. Drawing from FIA technical regulations, 2022–2024 team specifications, and computational simulations, the research evaluates how thermal management and ERS strategies influence lap-time performance, reliability, and efficiency. Results show that peak thermal efficiencies approaching 50% are achievable under optimal race conditions. However, thermal thresholds, FIA energy recovery caps, and battery state-of-charge (SOC) constraints impose operational challenges. The study also investigates potential future developments, including high-temperature materials, solid-state batteries, and advanced hybrid control algorithms, with implications for both motorsport and consumer vehicle technologies.