Experimental Verification of The Regenerative Engine

蓄热式发动机是一种新的内燃机概念，它将废气的一部分能量在多孔蓄热器中回收，供下一个循环使用。结果，发动机的热力学循环被彻底改变了。一个计算模型，包括流体摩擦和热力学变量，表明在燃料/空气混合比、速度、负载和设计参数的大范围内，效率超过40%。这款发动机还承诺通过消除爆震减少污染物排放和更高的功率密度。为了检验模型的适用性和新周期的实际应用潜力，建议对该周期进行实验检验。传统的发动机测试（负载、速度、油耗和排放）将在两台单缸发动机组成的原型发动机上进行。在这种发动机中，一个气缸充当压缩机，另一个气缸充当膨胀机，它们之间的相位差是可变的。流量由一系列的锥阀控制。将得到实验指示周期，以便与模型的预测结果进行比较，并进一步改进模型。当实验数据可用时，将增加传热和燃烧子模型。

The regenerative engine is a new concept of internal combustion engine in which part of the energy of the exhaust gases is recovered in a porous regenerator to be used in the next cycle. As a result, the thermodynamic cycle in the engine is radically changed. A computational model, including fluid friction as well as thermodynamic variables, has shown indicated efficiencies in excess of 40 percent for wide ranges of fuel/air mixture ratios, speeds, loads, and design parameters. This engine also promises a reduction of pollutant emissions and a higher power density through the elimination of knock. It is proposed to test experimentally this cycle in order to check the appropriateness of the model and the practical potential of the new cycle. Conventional engine tests (load, speed, fuel consumption, and emissions) will be performed over a prototype engine composed of two single-cylinder engines. In this engine, one cylinder acts as a compressor and the other as an expander with a variable phase difference between them. Flow is controlled by a series of poppet valves. Experimental indicated cycles will be obtained for comparison with the predictions of the model and its further improvement. Heat transfer and combustion sub-models will be added as experimental data become available.