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首页> 外文会议>ASME Internal Combustion Engine Division technical conference >Waste Heat Recovery for Heavy-Duty Diesel Engines—A Review of Mechanical Turbocompounding
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Waste Heat Recovery for Heavy-Duty Diesel Engines—A Review of Mechanical Turbocompounding

机译：重型柴油机余热回收—机械涡轮复合的综述

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摘要

Heat rejected with the exhaust gas, EGR, engine coolant and other engine components is a major source of efficiency loss in internal combustion engines. One important technology to recover some of this "wasted" heat is turbocompounding. The US Environmental Protection Agency (EPA) estimates that turbocompounding provides a 1.8% efficiency improvement, is already a commercial technology and a penetration rate of 10% is estimated by 2027. Line haul sleeper cab applications are the most likely to see the highest market penetration rates. This paper presents an overview of mechanical turbocompounding for heavy-duty truck engines. For these applications, series turbocompounding is the most suitable configuration and a number of applications have used it since the early 1990s. Unlike other WHR technologies, turbocompounding interacts significantly with the engine through a higher exhaust backpressure. EGR makes it more challenging to realize an efficiency benefit from turbocompounding. It also makes emission control using aftertreatment technology more challenging due to a lower exhaust temperature.
机译：废气，EGR，发动机冷却液和其他发动机部件所排出的热量是内燃机效率损失的主要来源。回收其中一些“浪费”热量的一项重要技术是涡轮复合技术。美国环境保护署（EPA）估计，涡轮复合技术的效率提高了1.8％，已经是一项商业技术，到2027年，其普及率估计为10％。线下卧铺驾驶室应用最有可能看到最高的市场普及率费率。本文概述了重型卡车发动机的机械涡轮复合技术。对于这些应用，串联涡轮复合是最合适的配置，自1990年代初以来，许多应用都使用了它。与其他WHR技术不同，涡轮复合通过更高的排气背压与发动机发生显着相互作用。 EGR使实现涡轮复合的效率优势变得更具挑战性。由于较低的排气温度，这也使使用后处理技术的排放控制更具挑战性。

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