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Hydrogen Addition For Improved Lean Burn Capability of Slow and Fast Burning Natural Gas Combustion Chambers

Tunestål, Per LU ; Christensen, Magnus LU ; Einewall, Patrik LU ; Andersson, Tobias ; Johansson, Bengt LU and Jönsson, Owe (2002) SAE Powertrain & Fluid Systems Conference & Exhibition, 2003 2002(1725). p.21-32
Abstract
One way to extend the lean-burn limit of a natural gas engine is by addition of hydrogen to the primary fuel. This paper presents measurements made on a one-cylinder, 1.6- liter natural gas engine. Two combustion chambers, one slow and one fast burning, were tested with various amounts of hydrogen (0, 5, 10 and 15%-vol) added to natural gas. Three operating points were investigated for each combustion chamber and each hydrogen content level; idle, part load (5 bar IMEP) and 13 bar IMEP (simulated turbocharging). Air/fuel ratio was varied between stoichiometric and the lean limit. For each operating point, a range of ignition timings were tested to find maximum brake torque (MBT) and/or knock. Heat-release rate calculations were made in... (More)
One way to extend the lean-burn limit of a natural gas engine is by addition of hydrogen to the primary fuel. This paper presents measurements made on a one-cylinder, 1.6- liter natural gas engine. Two combustion chambers, one slow and one fast burning, were tested with various amounts of hydrogen (0, 5, 10 and 15%-vol) added to natural gas. Three operating points were investigated for each combustion chamber and each hydrogen content level; idle, part load (5 bar IMEP) and 13 bar IMEP (simulated turbocharging). Air/fuel ratio was varied between stoichiometric and the lean limit. For each operating point, a range of ignition timings were tested to find maximum brake torque (MBT) and/or knock. Heat-release rate calculations were made in order to assess the influence of hydrogen addition on burn rate. Addition of hydrogen showed an increase in burn rate for both combustion chambers, resulting in more stable combustion close to the lean limit. This effect was most pronounced for lean operation with the slow combustion chamber. (Less)
Please use this url to cite or link to this publication:
author
; ; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Natural Gas, CNG, Hydrogen, Hythane, Spark Ignition, Combustion, Engine
host publication
SAE Special Publications
volume
2002
issue
1725
article number
2002-01-2686
pages
13 pages
publisher
Society of Automotive Engineers
conference name
SAE Powertrain & Fluid Systems Conference & Exhibition, 2003
conference location
Pittsburgh, PA, United States
conference dates
2003-10-27 - 2003-10-30
external identifiers
  • scopus:85072481373
ISSN
0099-5908
DOI
10.4271/2002-01-2686
project
Competence Centre for Combustion Processes
language
English
LU publication?
yes
id
685c3b40-cf8b-4ff3-8dd3-9fb6c5d64a02 (old id 538225)
date added to LUP
2016-04-01 16:30:20
date last changed
2022-02-12 22:40:30
@inproceedings{685c3b40-cf8b-4ff3-8dd3-9fb6c5d64a02,
  abstract     = {{One way to extend the lean-burn limit of a natural gas engine is by addition of hydrogen to the primary fuel. This paper presents measurements made on a one-cylinder, 1.6- liter natural gas engine. Two combustion chambers, one slow and one fast burning, were tested with various amounts of hydrogen (0, 5, 10 and 15%-vol) added to natural gas. Three operating points were investigated for each combustion chamber and each hydrogen content level; idle, part load (5 bar IMEP) and 13 bar IMEP (simulated turbocharging). Air/fuel ratio was varied between stoichiometric and the lean limit. For each operating point, a range of ignition timings were tested to find maximum brake torque (MBT) and/or knock. Heat-release rate calculations were made in order to assess the influence of hydrogen addition on burn rate. Addition of hydrogen showed an increase in burn rate for both combustion chambers, resulting in more stable combustion close to the lean limit. This effect was most pronounced for lean operation with the slow combustion chamber.}},
  author       = {{Tunestål, Per and Christensen, Magnus and Einewall, Patrik and Andersson, Tobias and Johansson, Bengt and Jönsson, Owe}},
  booktitle    = {{SAE Special Publications}},
  issn         = {{0099-5908}},
  keywords     = {{Natural Gas; CNG; Hydrogen; Hythane; Spark Ignition; Combustion; Engine}},
  language     = {{eng}},
  number       = {{1725}},
  pages        = {{21--32}},
  publisher    = {{Society of Automotive Engineers}},
  title        = {{Hydrogen Addition For Improved Lean Burn Capability of Slow and Fast Burning Natural Gas Combustion Chambers}},
  url          = {{https://lup.lub.lu.se/search/files/4692942/625780.pdf}},
  doi          = {{10.4271/2002-01-2686}},
  volume       = {{2002}},
  year         = {{2002}},
}