TY - JOUR
T1 - LPi engine combustion and emission characteristics depending on LPG properties from various fuel supply types by using DC motor type fuel pump
AU - Kim, Ju Won
AU - Hwang, In Goo
AU - Myung, Cha Lee
AU - Park, Simsoo
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2008/12
Y1 - 2008/12
N2 - This study is mainly focused on the assessment of return, semi return, and returnless fuel supply system for an LPi engine. In order to compare the return type with returnless one with various LPG blends, combustion analysis and cyclic THC emission characteristic were tested at the part load operating condition of the LPi engine. Considering heat balance of each fuel supply systems, pressure and temperature increment of return type showed lower at the fuel rail during idle warm up operation However those of returnless type at LPG tank maintained stable and slow increment because the heat transfer from the LPi engine was minimized. Finally, hot restartability of each fuel supply systems were evaluated with the various LPG blends and fuel temperatures. As a result, semi return type has equivalent performance to return type considering combustion and emission characteristic hot restartability performance for LPi engine.
AB - This study is mainly focused on the assessment of return, semi return, and returnless fuel supply system for an LPi engine. In order to compare the return type with returnless one with various LPG blends, combustion analysis and cyclic THC emission characteristic were tested at the part load operating condition of the LPi engine. Considering heat balance of each fuel supply systems, pressure and temperature increment of return type showed lower at the fuel rail during idle warm up operation However those of returnless type at LPG tank maintained stable and slow increment because the heat transfer from the LPi engine was minimized. Finally, hot restartability of each fuel supply systems were evaluated with the various LPG blends and fuel temperatures. As a result, semi return type has equivalent performance to return type considering combustion and emission characteristic hot restartability performance for LPi engine.
KW - Control system
KW - FR-FID
KW - LPi
KW - Return fuel delivery
KW - Semi-return fuel delivery control system
KW - Turbine type fuel pump
UR - http://www.scopus.com/inward/record.url?scp=57649135198&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=57649135198&partnerID=8YFLogxK
U2 - 10.3795/KSME-B.2008.32.12.907
DO - 10.3795/KSME-B.2008.32.12.907
M3 - Article
AN - SCOPUS:57649135198
VL - 32
SP - 907
EP - 914
JO - Transactions of the Korean Society of Mechanical Engineers, B
JF - Transactions of the Korean Society of Mechanical Engineers, B
SN - 1226-4881
IS - 12
ER -