Abstract
The sustainability of the environment is one of the biggest problem with which the mankind is confronting today. Cars release 30 percent of the carbon dioxide in the earth atmosphere. These cars account for 76 percent of the carbon monoxide in the earth's atmosphere [1].
The drastic reduction of the green house gases and the usage of conventional fossil fuels has become an important goal for all government institutions and major car producers. In the same time this pollution reduction must not compromise the comfort and safety of the vehicles. So, the propulsion system development has to answer to some special challenges and requirements. Besides the growing potential of the car park, the advanced propulsion system option has to consider as well the covered kilometers in the developing countries, where the price of the car is the major selling criteria.
This paper aims to highlight the importance of introducing the one-way valves around the forks of the hydraulic installation of a hybrid – hydraulic vehicle. Numerical simulations were made using AMESim software. It was observed that by introducing the one-way valves an increase of the speed with 10% was obtained, without influencing other parameters.
Keywords: alternative propulsion, hydraulic hybrid, energy recovery, serial and parallel connection, one way valve.