Results from a Thermodynamic Cycle Simulation for a Range of Inlet Oxygen Concentrations Using Either EGR or Oxygen Enriched Air for a Spark-Ignition Engine 2009-01-1108
An engine cycle simulation which included the second law of thermodynamics was used to examine the engine performance and the thermodynamic characteristics of a spark ignition engine as functions of the oxygen inlet concentration. A wide range of oxygen inlet concentrations (12% to 40% by volume) was considered. For oxygen inlet concentrations less than 21%(v), EGR was used, and for oxygen inlet concentrations greater than 21%(v), oxygen enriched inlet air was used. Two EGR configurations were considered: (1) cooled and (2) adiabatic. In general, engine efficiencies decreased, heat transfer increased, nitric oxide emissions increased, and the destruction of availability (exergy) decreased as the oxygen concentration increased.
Citation: Shyani, R. and Caton, J., "Results from a Thermodynamic Cycle Simulation for a Range of Inlet Oxygen Concentrations Using Either EGR or Oxygen Enriched Air for a Spark-Ignition Engine," SAE Technical Paper 2009-01-1108, 2009, https://doi.org/10.4271/2009-01-1108. Download Citation
Rajesh G. Shyani, Jerald A. Caton
Texas A&M University
SAE World Congress & Exhibition
Modeling of SI and Diesel Engines, 2009-SP-2244