Standardized Gasoline Compression Ignition Fuels Matrix

Paper #:
  • 2018-01-0925

Published:
  • 2018-04-03
Abstract:
Direct injection compression ignition engines running on gasoline-like fuels have been considered an attractive alternative to traditional spark ignition and diesel engines. The direct injection of fuel eliminates throttle losses for higher thermodynamic efficiencies and the better mixing of fuel/air due to the longer ignition delay times of the gasoline-like fuels allows better emission performance such as NOx and particulate matter (PM). These gasoline-like fuels which usually have lower octane compared to market gasoline has been identified as a viable option for the gasoline compression ignition (GCI) engine applications due to its longer ignition delay characteristics compared to diesel and lighter evaporation compared to gasoline fuel. The properties, specifications and sources of these GCI fuels are not fully understood yet because this technology is relatively new. In this work, a GCI fuel matrix is being developed based on significance of certain properties in GCI engine operation. Those properties were chosen to be density, final boiling point (FBP) and research octane number (RON) and the ranges of these properties were determined from the data reported in literature. These proposed fuels were theoretically formulated, while applying realistic constraints, using species present in real gasoline-like fuels. Finally, three-dimensional engine computational fluid dynamics (CFD) simulations were performed using all eleven GCI fuels and the similarities and differences were highlighted
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