Dynamic Analysis and Design Optimization of Series Hydraulic Hybrid System through Power Bond Graph Approach

International Journal of Vehicular Technology Pub Date : 2014-04-01 DOI:10.1155/2014/972049

R. Ramakrishnan, S. Hiremath, M. Singaperumal

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引用次数: 10

Abstract

The availability of natural gas and crude oil resources has been declining over the years. In automobile sector, the consumption of crude oil is 63% of total crude oil production in the world. Hence, automobile industries are placing more emphasis on energy efficient hydraulic hybrid systems, which can replace their conventional transmission systems. Series hydraulic hybrid system (SHHS) is a multidomain mechatronics system with two distinct power sources that includes prime mover and hydropneumatic accumulator. It replaces the conventional transmission system to drive the vehicle. The sizing of the subsystems in SHHS plays a major role in improving the energy efficiency of the vehicle. In this paper, a power bond graph approach is used to model the dynamics of the SHHS. The obtained simulation results indicate the energy flow during various modes of operations. It also includes the dynamic response of hydropneumatic accumulator, prime mover, and system output speed. Further, design optimization of the system is carried out to optimize the process parameters for maximizing the system energy efficiency. This leads to increase in fuel economy and environmentally friendly vehicle.

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基于功率键合图法的串联液压混合动力系统动态分析与设计优化

近年来，天然气和原油资源的可用性一直在下降。汽车行业的原油消耗量占世界原油总产量的63%。因此，汽车工业越来越重视节能的液压混合动力系统，它可以取代传统的传动系统。串联液压混合动力系统(SHHS)是一种多域机电一体化系统，具有两种不同的动力源，包括原动机和油气蓄能器。它取代了传统的传动系统来驱动车辆。SHHS中子系统的规模对提高整车的能效起着重要的作用。本文采用功率键合图方法对SHHS的动力学进行建模。仿真结果显示了不同运行模式下的能量流。它还包括液压-气动蓄能器、原动机和系统输出速度的动态响应。进一步对系统进行设计优化，优化工艺参数，使系统能效最大化。这将导致燃油经济性和环保型车辆的增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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International Journal of Vehicular Technology

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