Browse Publications Technical Papers 2008-01-0573
2008-04-14

Analytical Modeling and Simulation of a Swash Plate Pump/Motor 2008-01-0573

This paper presents a computer generated model of a hydraulic circuit that is typically seen in hybrid hydraulic vehicles (HHV's). HHV's have shown considerable potential for increasing fuel economy and decreasing emissions for mid-size and commercial trucks that exhibit urban driving habits. The aim of the present model is to aid in further optimizing the performance of the hybrid powertrain and serve as a baseline for future studies into the noise and vibration (NV) associated with the system. The model simulates the regenerative braking process of a parallel type hybrid hydraulic propulsion system. Regenerative braking captures and stores otherwise lost energy into an accumulator. This stored energy can then later be used to propel the vehicle, thus reducing the vehicle's reliance on a conventional internal combustion engine (ICE). This model will serve as a baseline for future developments and will be expanded and validated experimentally in ensuing research. At present, the model is validated theoretically. The model is developed utilizing AMESim, a graphical environment for modeling, simulation and analysis of engineering systems. Preliminary results of the model are presented as well as a sensitivity analysis that aides in determining optimal values for critical parameters of the system. The research herein will be validated in an upcoming research effort. (1)

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