A Numerical Study of a Free Piston IC Engine Operating on Homogeneous Charge Compression Ignition Combustion

Paper #:
  • 1999-01-0619

Published:
  • 1999-03-01
Citation:
Goldsborough, S. and Van Blarigan, P., "A Numerical Study of a Free Piston IC Engine Operating on Homogeneous Charge Compression Ignition Combustion," SAE Technical Paper 1999-01-0619, 1999, https://doi.org/10.4271/1999-01-0619.
Pages:
16
Abstract:
A free piston, internal combustion (IC) engine, operating at high compression ratio (∼30:1) and low equivalence ratio (ϕ∼0.35), and utilizing homogeneous charge compression ignition combustion, has been proposed by Sandia National Laboratories as a means of significantly improving the IC engine's cycle thermal efficiency and exhaust emissions. A zero-dimensional, thermodynamic model with detailed chemical kinetics, and empirical scavenging, heat transfer, and friction component models has been used to analyze the steady-state operating characteristics of this engine. The cycle simulations using hydrogen as the fuel, have indicated the critical factors affecting the engine's performance, and suggest the limits of improvement possible relative to conventional IC engine technologies.
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