The analysis of pneumo-hydraulic accumulator efficiency, applied as element of hybrid driving system

Abstract

The paper presents simulating model investigations of hydraulic accumulator-working as a secondary source of energy in a multisource driving system. The simulation of the system for characteristic input functions was conducted by the use of real gas models: Benedict - Webb - Rubin (BWR) and Redlich - Kwong. The dependence of energetic efficiency of accumulator was analyzed in term of its time-constant, time of storage, number of cycles of load and it was compared to ideal gas thermodynamic processes.