A Turbocharged Dual-Fuel HCCI Engine
(2001) International Spring Fuels and Lubricants Meeting and Exhibition 2001(1627).- Abstract
- A 6-cylinder truck engine is modified for turbocharged dual-fuel Homogeneous Charge Compression Ignition (HCCI) engine operation. Two different fuels, ethanol and n-heptane, are used to control the ignition timing. The objective of this study is to demonstrate high load operation of a full-size HCCI engine and to discuss some of the typical constraints associated with HCCI operation. This study proves the possibility to achieve high loads, up to 16 bar Brake Mean Effective Pressure (BMEP), and ultra-low NOdx emissions, using turbo charging and dual fuel. Although the system shows great potential, it is obvious that the lack of inlet air pre heating is a drawback at low loads, where combustion efficiency suffers. At high loads, the low... (More)
- A 6-cylinder truck engine is modified for turbocharged dual-fuel Homogeneous Charge Compression Ignition (HCCI) engine operation. Two different fuels, ethanol and n-heptane, are used to control the ignition timing. The objective of this study is to demonstrate high load operation of a full-size HCCI engine and to discuss some of the typical constraints associated with HCCI operation. This study proves the possibility to achieve high loads, up to 16 bar Brake Mean Effective Pressure (BMEP), and ultra-low NOdx emissions, using turbo charging and dual fuel. Although the system shows great potential, it is obvious that the lack of inlet air pre heating is a drawback at low loads, where combustion efficiency suffers. At high loads, the low exhaust temperature provides little energy for turbocharging, thus causing pump losses higher than for a comparable diesel engine. Design of turbocharger therefore, is a key issue in order to achieve high loads in combination with high efficiency. In spite of these limitations, brake thermal efficiencies and power rating close to those of the original diesel engine are achieved with significant reduction in NOdx emissions. The maximum efficiency is 41.2%, which is slightly lower than for the original diesel engine. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/538233
- author
- Olsson, Jan-Ola LU ; Tunestål, Per LU ; Haraldsson, Göran LU and Johansson, Bengt LU
- organization
- publishing date
- 2001-05-07
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- HCCI, High Load Operation, Engine, Turbocharged
- host publication
- SAE Special Publications
- volume
- 2001
- issue
- 1627
- article number
- 2001-01-1896
- pages
- 13 pages
- publisher
- Society of Automotive Engineers
- conference name
- International Spring Fuels and Lubricants Meeting and Exhibition
- conference location
- Orlando, FL, United States
- conference dates
- 2001-05-07 - 2001-05-09
- external identifiers
-
- scopus:85072470497
- ISSN
- 0099-5908
- DOI
- 10.4271/2001-01-1896
- language
- English
- LU publication?
- yes
- id
- ec686f42-4a15-40b8-9682-0709019f36ae (old id 538233)
- date added to LUP
- 2016-04-01 16:15:27
- date last changed
- 2022-03-14 23:13:47
@inproceedings{ec686f42-4a15-40b8-9682-0709019f36ae, abstract = {{A 6-cylinder truck engine is modified for turbocharged dual-fuel Homogeneous Charge Compression Ignition (HCCI) engine operation. Two different fuels, ethanol and n-heptane, are used to control the ignition timing. The objective of this study is to demonstrate high load operation of a full-size HCCI engine and to discuss some of the typical constraints associated with HCCI operation. This study proves the possibility to achieve high loads, up to 16 bar Brake Mean Effective Pressure (BMEP), and ultra-low NOdx emissions, using turbo charging and dual fuel. Although the system shows great potential, it is obvious that the lack of inlet air pre heating is a drawback at low loads, where combustion efficiency suffers. At high loads, the low exhaust temperature provides little energy for turbocharging, thus causing pump losses higher than for a comparable diesel engine. Design of turbocharger therefore, is a key issue in order to achieve high loads in combination with high efficiency. In spite of these limitations, brake thermal efficiencies and power rating close to those of the original diesel engine are achieved with significant reduction in NOdx emissions. The maximum efficiency is 41.2%, which is slightly lower than for the original diesel engine.}}, author = {{Olsson, Jan-Ola and Tunestål, Per and Haraldsson, Göran and Johansson, Bengt}}, booktitle = {{SAE Special Publications}}, issn = {{0099-5908}}, keywords = {{HCCI; High Load Operation; Engine; Turbocharged}}, language = {{eng}}, month = {{05}}, number = {{1627}}, publisher = {{Society of Automotive Engineers}}, title = {{A Turbocharged Dual-Fuel HCCI Engine}}, url = {{https://lup.lub.lu.se/search/files/4617829/625782.pdf}}, doi = {{10.4271/2001-01-1896}}, volume = {{2001}}, year = {{2001}}, }