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Humid Air Motor : A Novel Concept to Decrease the Emissions Using the Exhaust Heat

Arunachalam, Prakash LU ; Tuner, Martin LU ; Tunestal, Per LU and Thern, Marcus LU (2017) In SAE Technical Papers 2017-October.
Abstract

Humid air motor (HAM) is an engine operated with humidified inlet charge. System simulations study on HAM showed the waste heat recovery potential over a conventional system. An HAM setup was constructed, to comprehend the potential benefits in real-time, the HAM setup was built around a 13-litre six cylinder Volvo diesel engine. The HAM engine process is explained in detail in this paper. Emission analysis is also performed for all three modes of operation. The experiments were carried out at part load operating point of the engine to understand the effects of humidified charge on combustion, efficiency, and emissions. Experiments were conducted without EGR, with EGR, and with humidified inlet charge. These three modes of operation... (More)

Humid air motor (HAM) is an engine operated with humidified inlet charge. System simulations study on HAM showed the waste heat recovery potential over a conventional system. An HAM setup was constructed, to comprehend the potential benefits in real-time, the HAM setup was built around a 13-litre six cylinder Volvo diesel engine. The HAM engine process is explained in detail in this paper. Emission analysis is also performed for all three modes of operation. The experiments were carried out at part load operating point of the engine to understand the effects of humidified charge on combustion, efficiency, and emissions. Experiments were conducted without EGR, with EGR, and with humidified inlet charge. These three modes of operation provided the potential benefits of each system. Exhaust heat was used for partial humidification process. Results show that HAM operation, without compromising on efficiency, reduces NOx and soot significantly over the engine operated without EGR. With HAM around 75-80% of the otherwise waste heat is recuperated (Appendix). This heat is used to reduce the pumping losses and emissions unlike in other waste heat recovery technologies, where the power production is the primary objective.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
emission, humid air, Humidification, multi-cylinder experiment, NOx, Soot, waste heat
in
SAE Technical Papers
volume
2017-October
publisher
Society of Automotive Engineers
external identifiers
  • scopus:85030833919
ISSN
0148-7191
DOI
10.4271/2017-01-2369
language
English
LU publication?
yes
id
244bc398-346b-4001-a8df-007edfbe1cb5
date added to LUP
2017-10-18 08:51:26
date last changed
2018-01-07 12:22:51
@article{244bc398-346b-4001-a8df-007edfbe1cb5,
  abstract     = {<p>Humid air motor (HAM) is an engine operated with humidified inlet charge. System simulations study on HAM showed the waste heat recovery potential over a conventional system. An HAM setup was constructed, to comprehend the potential benefits in real-time, the HAM setup was built around a 13-litre six cylinder Volvo diesel engine. The HAM engine process is explained in detail in this paper. Emission analysis is also performed for all three modes of operation. The experiments were carried out at part load operating point of the engine to understand the effects of humidified charge on combustion, efficiency, and emissions. Experiments were conducted without EGR, with EGR, and with humidified inlet charge. These three modes of operation provided the potential benefits of each system. Exhaust heat was used for partial humidification process. Results show that HAM operation, without compromising on efficiency, reduces NOx and soot significantly over the engine operated without EGR. With HAM around 75-80% of the otherwise waste heat is recuperated (Appendix). This heat is used to reduce the pumping losses and emissions unlike in other waste heat recovery technologies, where the power production is the primary objective.</p>},
  articleno    = {2017-01-2369},
  author       = {Arunachalam, Prakash and Tuner, Martin and Tunestal, Per and Thern, Marcus},
  issn         = {0148-7191},
  keyword      = {emission,humid air,Humidification,multi-cylinder experiment,NOx,Soot,waste heat},
  language     = {eng},
  publisher    = {Society of Automotive Engineers},
  series       = {SAE Technical Papers},
  title        = {Humid Air Motor : A Novel Concept to Decrease the Emissions Using the Exhaust Heat},
  url          = {http://dx.doi.org/10.4271/2017-01-2369},
  volume       = {2017-October},
  year         = {2017},
}