Double Compression Expansion Engine: A Parametric Study on a High-Efficiency Engine Concept | Zendy

Vijai Shankar Bhavani Shankar | Zendy; Bengt Johansson | Zendy; Arne Andersson | Zendy

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Double Compression Expansion Engine: A Parametric Study on a High-Efficiency Engine Concept

Author(s) -

Vijai Shankar Bhavani Shankar,

Bengt Johansson,

Arne Andersson

Publication year - 2018

Publication title -

sae technical papers on cd-rom/sae technical paper series

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.295

H-Index - 107

eISSN - 1083-4958

pISSN - 0148-7191

DOI - 10.4271/2018-01-0890

Subject(s) - compression (physics) , parametric statistics , computer science , automotive engineering , materials science , engineering , mathematics , composite material , statistics

The Double compression expansion engine (DCEE) concept has exhibited a potential for achieving high brake thermal efficiencies (BTE). The effect of different engine components on system efficiency was evaluated in this work using GT Power simulations. A parametric study on piston insulation, convection heat transfer multiplier, expander head insulation, insulation of connecting pipes, ports and tanks, and the expander intake valve lift profiles was conducted to understand the critical parameters that affected engine efficiency. The simulations were constrained to a constant peak cylinder pressure of 300 bar, and a fixed combustion phasing. The results from this study would be useful in making technology choices that will help realise the potential of this engine concept.

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