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CFD Investigation on Injection Strategy and Gasoline Quality Impact on In-Cylinder Temperature Distribution and Heat Transfer in PPC

Fridriksson, Helgi LU ; Hajireza, Shahrokh LU ; Sundén, Bengt LU and Tunér, Martin LU (2013) ICE2013 - 11th International Conference on Engine & Vehicles In [Host publication title missing]
Abstract
Recently, internal combustion engine design has been moving towards downsized, more efficient engines. One key in designing a more efficient engine is the control of heat losses, i.e., improvements of the thermodynamic cycle. Therefore, there is increasing interest in examining and documenting the heat transfer process of an internal combustion engine. A heavy-duty diesel engine was modeled with a commercial CFD code in order to examine the effects of two different gasoline fuels, and the injection strategy used, on heat transfer within the engine cylinder in a partially premixed combustion (PPC) mode. The investigation on the fuel quality and injection strategy indicates that the introduction of a pilot injection is more beneficial in... (More)
Recently, internal combustion engine design has been moving towards downsized, more efficient engines. One key in designing a more efficient engine is the control of heat losses, i.e., improvements of the thermodynamic cycle. Therefore, there is increasing interest in examining and documenting the heat transfer process of an internal combustion engine. A heavy-duty diesel engine was modeled with a commercial CFD code in order to examine the effects of two different gasoline fuels, and the injection strategy used, on heat transfer within the engine cylinder in a partially premixed combustion (PPC) mode. The investigation on the fuel quality and injection strategy indicates that the introduction of a pilot injection is more beneficial in order to lower heat transfer, than adjusting the fuel quality. This is due to reduced wall exposure to higher temperature gases and more equally distributed heat losses in the combustion chamber. A comparison was also made between two loads with the same fuel quality and injection strategy, which revealed that even though the relative heat load to the walls was higher in the lower load case, the gross indicated efficiency was higher, due to a lower value of the

exhaust energy. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
CFD, Heat Transfer, PPC Engine, Injection Strategy, Gasoline Quality
in
[Host publication title missing]
pages
13 pages
publisher
SAE
conference name
ICE2013 - 11th International Conference on Engine & Vehicles
external identifiers
  • Other:SAE Technical Paper 2013-24-0009
  • Scopus:84890324864
DOI
10.4271/2013-24-0009
language
English
LU publication?
yes
id
d5b917d3-31c4-4ef7-af9a-0980da163272 (old id 4172735)
date added to LUP
2013-11-21 11:48:47
date last changed
2016-10-13 04:37:17
@misc{d5b917d3-31c4-4ef7-af9a-0980da163272,
  abstract     = {Recently, internal combustion engine design has been moving towards downsized, more efficient engines. One key in designing a more efficient engine is the control of heat losses, i.e., improvements of the thermodynamic cycle. Therefore, there is increasing interest in examining and documenting the heat transfer process of an internal combustion engine. A heavy-duty diesel engine was modeled with a commercial CFD code in order to examine the effects of two different gasoline fuels, and the injection strategy used, on heat transfer within the engine cylinder in a partially premixed combustion (PPC) mode. The investigation on the fuel quality and injection strategy indicates that the introduction of a pilot injection is more beneficial in order to lower heat transfer, than adjusting the fuel quality. This is due to reduced wall exposure to higher temperature gases and more equally distributed heat losses in the combustion chamber. A comparison was also made between two loads with the same fuel quality and injection strategy, which revealed that even though the relative heat load to the walls was higher in the lower load case, the gross indicated efficiency was higher, due to a lower value of the<br/><br>
exhaust energy.},
  author       = {Fridriksson, Helgi and Hajireza, Shahrokh and Sundén, Bengt and Tunér, Martin},
  keyword      = {CFD,Heat Transfer,PPC Engine,Injection Strategy,Gasoline Quality},
  language     = {eng},
  pages        = {13},
  publisher    = {ARRAY(0xad03178)},
  series       = {[Host publication title missing]},
  title        = {CFD Investigation on Injection Strategy and Gasoline Quality Impact on In-Cylinder Temperature Distribution and Heat Transfer in PPC},
  url          = {http://dx.doi.org/10.4271/2013-24-0009},
  year         = {2013},
}