Energy Recovery Efficiency of Flow-Coupled Flywheel Vehicle

In this study a flow-coupled flywheel vehicle was proposed and its energy recovery efficiency was discussed. This new kind of flywheel vehicle has simpler configuration, fewer components and easier control method. And it was confirmed that this system had enough capability to recover vehicle kinetic energy that might otherwise be lost as heat during braking. Then, more attentions were paid to initial speed of recovery flywheel and displacement ratio of variable displacement pump/motor that influenced recovery efficiency of the proposed hybrid vehicle. Experimental results show that the maximum recovery efficiency will amount to about 82%. It is also significant to point out that in order to improve recovery efficiency, the displacement size of variable displacement pump/motor is required so as to make it operates as maximum displacement and the initial speed of the recovery flywheel is limited at a suitable scope (about 1000~3000 rpm) with regard to the windage and axial loss and the amount of energy storage. Hence, it is indicated that this type of hybrid vehicle can be as an optional configuration to widely use in hybrid vehicle.

並列關鍵字

Displacement ratio ； energy recovery efficiency ； flow couple ； flywheel vehicle ； flywheel energy storage

國際替代計量

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