Fuel Octane and Volatility Effects on the Stochastic Pre-Ignition Behavior of a 2.0L Gasoline Turbocharged DI Engine 2014-01-1226
Classic, hot-spot induced pre-ignition is a phenomenon that has been observed in gasoline spark ignited engines over the past 60-70 years. With the development of turbocharged, direct-injected (DI) gasoline engines, a new pre-ignition phenomenon occurring at low engine speeds and high loads has been encountered. Termed Stochastic Pre-ignition (SPI), it has become a significant issue to address in allowing for the full potential of gasoline turbo DI technology to improve powertrain efficiency. Many researchers are studying all aspects of the causes of Stochastic Pre-ignition, including causes by oil, fuel and engine hardware systems. The focus of this specific research was to study the relationship of fuel octane and volatility to Stochastic Pre-ignition behavior utilizing a GM 2.0L Gasoline Turbocharged DI engine (LHU).
Citation: Chapman, E., Davis, R., Studzinski, W., and Geng, P., "Fuel Octane and Volatility Effects on the Stochastic Pre-Ignition Behavior of a 2.0L Gasoline Turbocharged DI Engine," SAE Int. J. Fuels Lubr. 7(2):379-389, 2014, https://doi.org/10.4271/2014-01-1226. Download Citation
Elana Chapman, Richard S. Davis, William Studzinski, Pat Geng
General Motors Co.
SAE 2014 World Congress & Exhibition
SAE International Journal of Fuels and Lubricants-V123-4EJ, SAE International Journal of Fuels and Lubricants-V123-4