High-efficiency hybrid cycle

Thermodynamics
The classical Carnot heat engine
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Specific heat capacity  c = {\displaystyle c=}
T {\displaystyle T} S {\displaystyle \partial S}
N {\displaystyle N} T {\displaystyle \partial T}
Compressibility  β = {\displaystyle \beta =-}
1 {\displaystyle 1} V {\displaystyle \partial V}
V {\displaystyle V} p {\displaystyle \partial p}
Thermal expansion  α = {\displaystyle \alpha =}
1 {\displaystyle 1} V {\displaystyle \partial V}
V {\displaystyle V} T {\displaystyle \partial T}
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The high-efficiency hybrid cycle (HEHC) is a new 4-stroke thermodynamic cycle combining elements of the Otto cycle, Diesel cycle, Atkinson cycle and Rankine cycle.[1]

HEHC engines

The 3rd generation design of the Liquidpiston Engine currently in development is the only engine currently designed around the HEHC. It is a rotary combustion engine.[2]

References

  1. ^ [dead link]Nikolay Shkolnik; Alexander C. Shkolnik (September 2005). "High Efficiency Hybrid Cycle Engine" (PDF). Retrieved 2008-05-18.
  2. ^ How Our Rotary Engine Works | LiquidPiston

External links

  • LiquidPiston Inc. – The company designing the first HEHC-based engine
  • MIT News article: "Small engine packs a punch" (December 5, 2014)
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