Effects of Injector-Tip Configuration on the Performance and Emissions of an Uncooled Diesel 881613
The influence of the number and the size of the fuel-injector orifices and their opening pressure on the performance and emissions of an uncooled, thermally insulated diesel engine was experimentally investigated. Increasing the number of orifices was generally found to decrease the Brake Specific Fuel Consumption (BSFC) and smoke emissions but to increase the nitric-oxide (NO) emissions. Increasing the number of orifices resulted in a slight increase in premixed burning and in a substantial decrease in the duration of combustion. Increasing the orifice size increased the BSFC and smoke emissions but decreased the NO emissions. The heat-release characteristics were not significantly altered, however. Finally, increasing the opening pressure of the injector increased the BSFC and smoke emissions and decreased the NO emissions of the uncooled engine.
Citation: Alkidas, A., "Effects of Injector-Tip Configuration on the Performance and Emissions of an Uncooled Diesel," SAE Technical Paper 881613, 1988, https://doi.org/10.4271/881613. Download Citation
Author(s):
A. C. Alkidas
Affiliated:
General Motors Research Laboratories, Warren, MI
Pages: 12
Event:
1988 SAE International Fall Fuels and Lubricants Meeting and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Diesel / compression ignition engines
Fuel consumption
Emissions
Combustion and combustion processes
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