Study on low temperature heat release of partially premixed combustion in a heavy duty engine for real-time applications
(2019) In Applied Thermal Engineering 148. p.219-228- Abstract
- Partially premixed combustion aims to reduce NOx and particulate matter emission without fuel consumption penalty. Low temperature heat release (LTHR) is an important process to be investigated. A novel motoring pressure prediction algorithm based on variable polytropic exponents was introduced and utilized to estimate average heat transfer coefficient as well as heat dissipation for real-time applications. A series of parameters, such as start of combustion (SOC) of LTHR, crank angle of 50% heat released (CA50) during LTHR, duration of LTHR and heat amount of LTHR, were further analyzed under different engine operation conditions. The results demonstrated that: (1) the absolute motoring pressure prediction error was below 0.5 bar with a... (More)
- Partially premixed combustion aims to reduce NOx and particulate matter emission without fuel consumption penalty. Low temperature heat release (LTHR) is an important process to be investigated. A novel motoring pressure prediction algorithm based on variable polytropic exponents was introduced and utilized to estimate average heat transfer coefficient as well as heat dissipation for real-time applications. A series of parameters, such as start of combustion (SOC) of LTHR, crank angle of 50% heat released (CA50) during LTHR, duration of LTHR and heat amount of LTHR, were further analyzed under different engine operation conditions. The results demonstrated that: (1) the absolute motoring pressure prediction error was below 0.5 bar with a relative error below 4%; (2) the average heat released during LTHR was about 40–65 J, and the mass burned was about 1–3% of the total mass burned; (3) CA50 of LTHR was more stable than SOC of LTHR, and was a better indicator for real-time combustion phase control; (4) similar combustion phase and heat amount of LTHR could be reached by adjusting the timing of the third injection regardless the difference in timing of the second injection; (5) the combustion phase and heat amount of LTHR could be controlled by the duration of the second injection. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/a6e9decb-776a-4cfa-9686-f88ab36043ea
- author
- Fang, Cheng LU ; Tunestal, Per LU ; Yin, Lianhao LU ; Yang, Fuyuan and Yang, Xiaofan
- organization
- publishing date
- 2019
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Applied Thermal Engineering
- volume
- 148
- pages
- 219 - 228
- publisher
- Elsevier
- external identifiers
-
- scopus:85056764343
- ISSN
- 1359-4311
- DOI
- 10.1016/j.applthermaleng.2018.11.003
- language
- English
- LU publication?
- yes
- id
- a6e9decb-776a-4cfa-9686-f88ab36043ea
- date added to LUP
- 2018-11-25 09:28:45
- date last changed
- 2022-04-25 19:08:28
@article{a6e9decb-776a-4cfa-9686-f88ab36043ea, abstract = {{Partially premixed combustion aims to reduce NOx and particulate matter emission without fuel consumption penalty. Low temperature heat release (LTHR) is an important process to be investigated. A novel motoring pressure prediction algorithm based on variable polytropic exponents was introduced and utilized to estimate average heat transfer coefficient as well as heat dissipation for real-time applications. A series of parameters, such as start of combustion (SOC) of LTHR, crank angle of 50% heat released (CA50) during LTHR, duration of LTHR and heat amount of LTHR, were further analyzed under different engine operation conditions. The results demonstrated that: (1) the absolute motoring pressure prediction error was below 0.5 bar with a relative error below 4%; (2) the average heat released during LTHR was about 40–65 J, and the mass burned was about 1–3% of the total mass burned; (3) CA50 of LTHR was more stable than SOC of LTHR, and was a better indicator for real-time combustion phase control; (4) similar combustion phase and heat amount of LTHR could be reached by adjusting the timing of the third injection regardless the difference in timing of the second injection; (5) the combustion phase and heat amount of LTHR could be controlled by the duration of the second injection.}}, author = {{Fang, Cheng and Tunestal, Per and Yin, Lianhao and Yang, Fuyuan and Yang, Xiaofan}}, issn = {{1359-4311}}, language = {{eng}}, pages = {{219--228}}, publisher = {{Elsevier}}, series = {{Applied Thermal Engineering}}, title = {{Study on low temperature heat release of partially premixed combustion in a heavy duty engine for real-time applications}}, url = {{http://dx.doi.org/10.1016/j.applthermaleng.2018.11.003}}, doi = {{10.1016/j.applthermaleng.2018.11.003}}, volume = {{148}}, year = {{2019}}, }