The Free Piston Power Pack (FP3) represents a new concept in the design of free piston engines. The FP3 is a free piston engine with an integral generator for electrical power output. Its novel features are an integral compressor and a passive intake valve located in the head of the piston. These improvements eliminate undesirable problems that affect conventional free piston engine designs, such as piston ring wear and the need for an external compressor, and allow a significant increase in power density. The FP3 is designed to meet the highest levels of fuel efficiency and exhaust emissions performance in a compact size for use in hybrid electric vehicles (HEVs). This paper describes the design of the FP3 and gives details of the operation and construction of a prototype. Construction of a prototype FP3 free piston module is complete and testing is in progress. Current work is focused on the electronic control of the generator and electronic starting of the engine. The generator control system and electro-magnetic forces show good agreement with our simulation results. The next stage of testing is to investigate the dynamic behavior of the module with combustion and to implement the engine control algorithms. The final phase of testing will investigate the fuel efficiency and exhaust emissions performance.


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    Title :

    The free piston power pack: sustainable power for hybrid electric vehicles


    Contributors:
    Carter, D. (author) / Wechner, E. (author)


    Publication date :

    2003


    Size :

    7 Seiten, 4 Bilder, 8 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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