Browse Publications Technical Papers 2005-01-3969
2005-11-22

Design of a Pneumatic Regenerative Braking System 2005-01-3969

The energetic efficiency of automotive vehicles can be increased through the use of regenerative brake systems. Usually, traditional regenerative braking systems consist of electrical generators linked to the traditional vehicle brake. These systems are applied to store electrical energy in chemical batteries. In this paper we introduce a new regenerative concept, based on pneumatic (air pressure) energy storage. In the proposed system, the pneumatic energy is stored in small vessels and can be further applied to supply pneumatic driven actuators in the vehicle operation system (pneumatic brake assistance, automatic doors system, etc). A mathematical model of the pneumatic regenerative brake applied to a theoretical urban bus system is presented. Results of simulations using the model with the pneumatic regenerative brake were compared with results of simulations using a model without the regenerative brake, allowing the energy efficiency evaluation of the proposed regenerative system.

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