Effect of Cetane Number with and without Additive on Cold Startability and White Smoke Emissions in a Diesel Engine 1999-01-1476
The effect of Cetane Number (CN) of the fuel and the addition of cetane improvers on the cold starting and white smoke emissions of a diesel engine was investigated. Tests were conducted on a single-cylinder, four-stroke-cycle, air-cooled, direct-injection, stand-alone diesel engine in a cold room at ambient temperatures ranging from 25 °C to - 5 °C. Five fuels were used. The base fuel has a CN of 49.2. The CN of the base fuel was lowered to 38.7 and 30.8 by adding different amounts of aromatic hydrocarbons. Iso-octyl nitrate is added to the high aromatic fuels in order to increase their CN to 48.6 and 38.9 respectively. Comparisons are made between the five fuels to determine the effect of CN and the additive on cylinder peak pressure, heat release rate, cold start-ability, combustion instability, hydrocarbon emissions and solid and liquid particulates.
Citation: Hara, H., Itoh, Y., Henein, N., and Bryzik, W., "Effect of Cetane Number with and without Additive on Cold Startability and White Smoke Emissions in a Diesel Engine," SAE Technical Paper 1999-01-1476, 1999, https://doi.org/10.4271/1999-01-1476. Download Citation
Hiroaki Hara, Yasuhiko Itoh, Naeim A. Henein, Walter Bryzik
Wayne State University, US Army TARDEC
International Fuels & Lubricants Meeting & Exposition
Fuel and Additive Performance in SI and Ci Engines-SP-1461, SAE 1999 Transactions - Journal of Fuels and Lubricants-V108-4