CFD Simulations of Pre-Chamber Jets' Mixing Characteristics in a Heavy Duty Natural Gas Engine
(2015) JSAE/SAE Powertrain, Fuels and Lubricants International Meeting, 2015- Abstract
- The effect of pre-chamber volume and nozzle diameter on performance of pre-chamber ignition device in a heavy duty natural gas engine has previously been studied by the authors. From the analysis of recorded pre- and main chamber pressure traces, it was observed that a pre-chamber with a larger volume reduced flame development angle and combustion duration while at a given pre-chamber volume, smaller nozzle diameters provided better ignition in the main chamber. The structure of pre-chamber jet and its mixing characteristics with the main chamber charge are believed to play a vital role, and hence CFD simulations are performed to study the fluid dynamic aspects of interaction between the pre-chamber jet and main chamber charge during the... (More)
- The effect of pre-chamber volume and nozzle diameter on performance of pre-chamber ignition device in a heavy duty natural gas engine has previously been studied by the authors. From the analysis of recorded pre- and main chamber pressure traces, it was observed that a pre-chamber with a larger volume reduced flame development angle and combustion duration while at a given pre-chamber volume, smaller nozzle diameters provided better ignition in the main chamber. The structure of pre-chamber jet and its mixing characteristics with the main chamber charge are believed to play a vital role, and hence CFD simulations are performed to study the fluid dynamic aspects of interaction between the pre-chamber jet and main chamber charge during the period of flame development angle, i.e. before main chamber ignition. It has been observed that jets from a larger pre-chamber penetrates through the main chamber faster due to higher momentum and generates turbulence in the main chamber earlier. At a given pre-chamber volume, smaller nozzle diameter causes higher velocity jet also causing high turbulence built up and better distribution of active species from the pre-chamber into the main chamber. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/8228184
- author
- Shah, Ashish LU ; Tunestål, Per LU and Johansson, Bengt LU
- organization
- publishing date
- 2015
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Internal combustion engines, ignition system, pre-chamber ignition, CFD simulation
- host publication
- [Host publication title missing]
- pages
- 9 pages
- publisher
- Society of Automotive Engineers
- conference name
- JSAE/SAE Powertrain, Fuels and Lubricants International Meeting, 2015
- conference location
- Kyoto, Japan
- conference dates
- 2015-09-01 - 2015-09-04
- external identifiers
-
- scopus:84983439619
- DOI
- 10.4271/2015-01-1890
- project
- Competence Centre for Combustion Processes
- language
- English
- LU publication?
- yes
- id
- 50a9cffe-4388-4c3c-8cc2-4544e8a4bcd5 (old id 8228184)
- date added to LUP
- 2016-04-04 11:21:16
- date last changed
- 2022-04-16 03:16:18
@inproceedings{50a9cffe-4388-4c3c-8cc2-4544e8a4bcd5,
abstract = {{The effect of pre-chamber volume and nozzle diameter on performance of pre-chamber ignition device in a heavy duty natural gas engine has previously been studied by the authors. From the analysis of recorded pre- and main chamber pressure traces, it was observed that a pre-chamber with a larger volume reduced flame development angle and combustion duration while at a given pre-chamber volume, smaller nozzle diameters provided better ignition in the main chamber. The structure of pre-chamber jet and its mixing characteristics with the main chamber charge are believed to play a vital role, and hence CFD simulations are performed to study the fluid dynamic aspects of interaction between the pre-chamber jet and main chamber charge during the period of flame development angle, i.e. before main chamber ignition. It has been observed that jets from a larger pre-chamber penetrates through the main chamber faster due to higher momentum and generates turbulence in the main chamber earlier. At a given pre-chamber volume, smaller nozzle diameter causes higher velocity jet also causing high turbulence built up and better distribution of active species from the pre-chamber into the main chamber.}},
author = {{Shah, Ashish and Tunestål, Per and Johansson, Bengt}},
booktitle = {{[Host publication title missing]}},
keywords = {{Internal combustion engines; ignition system; pre-chamber ignition; CFD simulation}},
language = {{eng}},
publisher = {{Society of Automotive Engineers}},
title = {{CFD Simulations of Pre-Chamber Jets' Mixing Characteristics in a Heavy Duty Natural Gas Engine}},
url = {{http://dx.doi.org/10.4271/2015-01-1890}},
doi = {{10.4271/2015-01-1890}},
year = {{2015}},
}