具有旁通补燃、超高增压、低压缩比复合发动机循环的热力分析

THE THERMODYNAMIC ANALYSIS OF THE TURBOCOMPO-UND ENGINE CYCLE CHARACTERIZED BY VERY HIGH SUPERCHARGING PRESSURE, BY-PASS SUPERCHARGING AND PRE-TURBINE REHEATING

本文提出了具有旁通补燃、超高增压、低压缩比复合发动机的理想循环、实际循环及其图示方法,推导了它的热效率和平均压力的计算公式,分析了各主要参数对热效率和平均压力的影响规律,讨论了复合发动机发展方向.分析表明,随着增压技术和零件抗热负荷能力的提高,该复合发动机有着巨大的发展潜力.

In this paper the equations of the thermal efficiency and the mean pressure for the proposed engine cycle are derived, the influence of the main cycle parameters on the thermal efficiency and the mean pressure are analysed and the direction of improving the performance of the turbocompound engine is discussed.