采用朗肯循环回收汽油机尾气余热的试验

发布时间：2018-04-16 00:01

本文选题：汽油机 + 单阀膨胀机　；参考：《内燃机学报》2016年04期

【摘要】：发动机尾气能量占燃料燃烧放热总量的35%,左右,采用朗肯循环系统回收发动机尾气能量是实现汽车发动机节能的有效途径.针对一台2.0,L汽油机,搭建用于回收尾气余热的朗肯循环试验系统,探究了汽油机不同负荷下朗肯循环系统的性能,并得到单阀膨胀机的示功图.结果表明:单阀膨胀机转速和输出功率随汽油机负荷的增加而增大.汽油机在4,000,r/min、90%,负荷工况下,膨胀机转速达到1,640,r/min,输出功率达到3.47,k W,相当于汽油机功率的5.8%,.当汽油机在转速为5,500,r/min、功率为76.6,k W的工况下,膨胀机的最高压力可以达到6.69,MPa,通过测试示功图计算得到的单阀膨胀机的指示功率可以达到5.06,k W.
[Abstract]:Fuel combustion engine exhaust energy accounted for 35% of the total, or use the Rankine cycle engine exhaust energy recovery system is an effective way to realize the energy saving of automobile engine. According to a 2 L gasoline engine, set up for the Rankine cycle test system for recycling waste heat of exhaust gas, to explore the performance of the engine under different loads and the Rankine cycle system. Single expansion valve indicator machine diagram. The results show that the single valve expansion engine speed and power output increases with the load of the gasoline engine gasoline engine. In 4000, r/min, 90%, load, expander speed reached 1640 r/min, output power of 3.47 K, W, 5.8%, equivalent to gasoline machine power. When the gasoline engine speed of 5500 r/min, 76.6 K W, power, operating conditions, the maximum pressure of the expander can reach 6.69 MPa, indicating the power of single valve expansion machine through the test indicator diagram can be obtained Reach 5.06, K W.

【作者单位】：天津大学内燃机燃烧学国家重点实验室;大连海洋大学机械与动力工程学院;
【基金】：国家重点基础研究发展计划(973)资助项目(2011CB707206)
【分类号】：TK417

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