Slow dynamic slope method in internal combustion engine benchmarking
Апстракт
Enlarged engine control complexity made the full-factorial steady-state testing approach extremely time consuming and hardly applicable under actual industry demands. Slow dynamic slope (SDS) method is one of many approaches with a potential for considerable testing time savings, with its own benefits and drawbacks. This paper puts in focus SDS approach and evaluates its applicability, potentials and accuracy for fast estimation of engine steady-state maps. The presented research is based on an extensive experiment conducted on a small passenger car compresion ignition engine. Being the method that uses quasi-stationary sweeping of the engine, SDS test cycle durations in the range from 120-600 seconds are used in order to test the method and draw conclusions on its applicability. It is shown that well shaped SDS testing cycle can provide a rather good estimate of the steady-state operating points very quickly, with a negligible or very small loss of accuracy. The analysis is conducted ...both on fast responding variables and those that are heavily influenced by process inertia. This led to some suggestions on how to form a criterion for the SDS gathered data quality evaluation and SDS testing cycle correction.
Кључне речи:
slow dynamic slope / dynamic internal combustion engine testingИзвор:
Thermal Science, 2018, 22, 3, 1271-1283Издавач:
- Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
Финансирање / пројекти:
- AVL-List GmbH
DOI: 10.2298/TSCI170921226M
ISSN: 0354-9836
WoS: 000437813000010
Scopus: 2-s2.0-85050287657
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Miljić, Nenad AU - Popović, Slobodan AU - Mrđa, Predrag AU - Kitanović, Marko PY - 2018 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2802 AB - Enlarged engine control complexity made the full-factorial steady-state testing approach extremely time consuming and hardly applicable under actual industry demands. Slow dynamic slope (SDS) method is one of many approaches with a potential for considerable testing time savings, with its own benefits and drawbacks. This paper puts in focus SDS approach and evaluates its applicability, potentials and accuracy for fast estimation of engine steady-state maps. The presented research is based on an extensive experiment conducted on a small passenger car compresion ignition engine. Being the method that uses quasi-stationary sweeping of the engine, SDS test cycle durations in the range from 120-600 seconds are used in order to test the method and draw conclusions on its applicability. It is shown that well shaped SDS testing cycle can provide a rather good estimate of the steady-state operating points very quickly, with a negligible or very small loss of accuracy. The analysis is conducted both on fast responding variables and those that are heavily influenced by process inertia. This led to some suggestions on how to form a criterion for the SDS gathered data quality evaluation and SDS testing cycle correction. PB - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd T2 - Thermal Science T1 - Slow dynamic slope method in internal combustion engine benchmarking EP - 1283 IS - 3 SP - 1271 VL - 22 DO - 10.2298/TSCI170921226M ER -
@article{ author = "Miljić, Nenad and Popović, Slobodan and Mrđa, Predrag and Kitanović, Marko", year = "2018", abstract = "Enlarged engine control complexity made the full-factorial steady-state testing approach extremely time consuming and hardly applicable under actual industry demands. Slow dynamic slope (SDS) method is one of many approaches with a potential for considerable testing time savings, with its own benefits and drawbacks. This paper puts in focus SDS approach and evaluates its applicability, potentials and accuracy for fast estimation of engine steady-state maps. The presented research is based on an extensive experiment conducted on a small passenger car compresion ignition engine. Being the method that uses quasi-stationary sweeping of the engine, SDS test cycle durations in the range from 120-600 seconds are used in order to test the method and draw conclusions on its applicability. It is shown that well shaped SDS testing cycle can provide a rather good estimate of the steady-state operating points very quickly, with a negligible or very small loss of accuracy. The analysis is conducted both on fast responding variables and those that are heavily influenced by process inertia. This led to some suggestions on how to form a criterion for the SDS gathered data quality evaluation and SDS testing cycle correction.", publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd", journal = "Thermal Science", title = "Slow dynamic slope method in internal combustion engine benchmarking", pages = "1283-1271", number = "3", volume = "22", doi = "10.2298/TSCI170921226M" }
Miljić, N., Popović, S., Mrđa, P.,& Kitanović, M.. (2018). Slow dynamic slope method in internal combustion engine benchmarking. in Thermal Science Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 22(3), 1271-1283. https://doi.org/10.2298/TSCI170921226M
Miljić N, Popović S, Mrđa P, Kitanović M. Slow dynamic slope method in internal combustion engine benchmarking. in Thermal Science. 2018;22(3):1271-1283. doi:10.2298/TSCI170921226M .
Miljić, Nenad, Popović, Slobodan, Mrđa, Predrag, Kitanović, Marko, "Slow dynamic slope method in internal combustion engine benchmarking" in Thermal Science, 22, no. 3 (2018):1271-1283, https://doi.org/10.2298/TSCI170921226M . .