Whole-Vehicle modelling of exhaust energy recovery on a diesel-electric hybrid bus
Whole-Vehicle modelling of exhaust energy recovery on a diesel-electric hybrid bus
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DOI：
10.1016/j.energy.2013.11.075
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发表时间：
2014-02
期刊：
影响因子：
9
通讯作者：
I. Briggs;G. McCullough;S. Spence;R. Douglas
中科院分区：
文献类型：
--
作者：
I. Briggs;G. McCullough;S. Spence;R. Douglas
混合动力汽车可以使用能量存储系统将发动机与车辆的驱动轮断开。这使得发动机运行更接近其最佳运行状态，但燃料能量仍然通过排气系统作为热量被浪费。在排气管道上使用涡轮发电机通过捕获一些其他浪费的热量并将其转化为有用的电能来解决这个问题。本文概述了对柴油-电动混合动力公共汽车发动机进行建模的工作，并结合了混合动力系统模型，该模型分析了混合动力汽车在驾驶周期内的性能。分析了汽轮发电机的功率分布及其对客车燃油消耗的影响。这表明，在典型的驾驶循环中，包括涡轮发电机在内的燃油消耗减少了2.4%。然后对混合动力客车发电机进行了优化，以提高车辆/发动机组合的性能，然后显示涡轮发电机可以减少3.0%的燃油消耗。使用涡轮发电机的经济效益也被考虑在节省燃料方面。对于一辆普通的公共汽车来说，一台涡轮发电机每年可以减少大约1200英镑的燃料成本。
Hybrid vehicles can use energy storage systems to disconnect the engine from the driving wheels of the vehicle. This enables the engine to be run closer to its optimum operating condition, but fuel energy is still wasted through the exhaust system as heat. The use of a turbogenerator on the exhaust line addresses this problem by capturing some of the otherwise wasted heat and converting it into useful electrical energy.This paper outlines the work undertaken to model the engine of a diesel-electric hybrid bus, coupled with a hybrid powertrain model which analysed the performance of a hybrid vehicle over a drive-cycle. The distribution of the turbogenerator power was analysed along with the effect on the fuel consumption of the bus. This showed that including the turbogenerator produced a 2.4% reduction in fuel consumption over a typical drive-cycle.The hybrid bus generator was then optimised to improve the performance of the combined vehicle/engine package and the turbogenerator was then shown to offer a 3.0% reduction in fuel consumption. The financial benefits of using the turbogenerator were also considered in terms of fuel savings for operators. For an average bus, a turbogenerator could reduce fuel costs by around £1200 per year.