Influence of the Post-Injection Pattern on Performance, Soot and NOx Emissions in a HD Diesel Engine 2002-01-0502
The main objective of the study described in this paper is to explore the potential of different post-injection patterns, with a plain common rail system, for reduction of soot emissions in HD diesel engines.
Test have been carried out in a single-cylinder engine at several critical engine operation points from the European Steady state test Cycle (ESC). At these operation points, EGR was introduced to reduce NOx emissions to a given value, and then different post-injection patterns were produced. A parametric study was performed, considering the time between injections and the post-injected fuel mass as the main variables. In every case the total injected fuel mass was kept constant.
Aside from the experimental data obtained in the engine tests, a diagnosis model was applied to calculate heat release laws and other parameters depicting the combustion process.
The results obtained allowed to discern the effects produced by the different post-injection patterns and to assess their potential for Soot emissions reduction, keeping NOx emissions and fuel consumption at the original values.
Citation: Payri, F., Benajes, J., Pastor, J., and Molina, S., "Influence of the Post-Injection Pattern on Performance, Soot and NOx Emissions in a HD Diesel Engine," SAE Technical Paper 2002-01-0502, 2002, https://doi.org/10.4271/2002-01-0502. Download Citation
Author(s):
Francisco Payri, Jesús Benajes, José V. Pastor, Santiago Molina
Affiliated:
Universidad Politécnica de Valencia
Pages: 10
Event:
SAE 2002 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Diesel Fuel Injection and Sprays 2002-SP-1696
Related Topics:
Nitrogen oxides
Particulate matter (PM)
Fuel consumption
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