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Emission Reduction Using Hydrotreated Vegetable Oil (HVO) With Miller Timing and EGR in Diesel Combustion
Journal Article
2011-01-1955
ISSN: 1946-3952, e-ISSN: 1946-3960
Sector:
Citation:
Lehto, K., Elonheimo, A., Hakkinen, K., Sarjovaara, T. et al., "Emission Reduction Using Hydrotreated Vegetable Oil (HVO) With Miller Timing and EGR in Diesel Combustion," SAE Int. J. Fuels Lubr. 5(1):218-224, 2012, https://doi.org/10.4271/2011-01-1955.
Language:
English
Abstract:
Several high-speed diesel engine test runs were carried out
during 2010 in Aalto University using a single-cylinder research
engine. The main focus was on miller cycle and exhaust gas
recirculation (EGR) tests using hydrotreated vegetable oil (HVO) as
fuel. But also reference tests were run using both HVO and regular
EN590 diesel in normal engine configuration and running
parameters.
The miller tests included a sweep of three different intake
valve closing timings and also a sweep with advanced start of
injection. The results showed a reduction in both nitrous oxides
(NOx) and smoke emissions.
EGR tests showed a significant decrease in NOx
emissions as was expected. The lower smoke emissions of HVO
compared to EN590 enable higher EGR percentages with similar PM
emission and hence bigger NOx emission reduction.