TY - JOUR
T1 - Diesel engine aftertreatment warm-up through early exhaust valve opening and internal exhaust gas recirculation during idle operation
AU - Gosala, Dheeraj B.
AU - Ramesh, Aswin K.
AU - Allen, Cody M.
AU - Joshi, Mrunal C.
AU - Taylor, Alexander H.
AU - Van Voorhis, Matthew
AU - Shaver, Gregory M.
AU - Farrell, Lisa
AU - Koeberlein, Edward
AU - McCarthy, James
AU - Stretch, Dale
N1 - Funding Information:
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: The project is funded by Cummins and Eaton.
Publisher Copyright:
© IMechE 2017.
PY - 2018/9/1
Y1 - 2018/9/1
N2 - A large fraction of diesel engine tailpipe NOx emissions are emitted before the aftertreatment components reach effective operating temperatures. As a result, it is essential to develop technologies to accelerate initial aftertreatment system warm-up. This study investigates the use of early exhaust valve opening (EEVO) and its combination with negative valve overlap to achieve internal exhaust gas recirculation (iEGR), for aftertreatment thermal management, both at steady state loaded idle operation and over a heavy-duty federal test procedure (HD-FTP) drive cycle. The results demonstrate that implementing EEVO with iEGR during steady state loaded idle conditions enables engine outlet temperatures above 400 °C, and when implemented over the HD-FTP, is expected to result in a 7.9% reduction in tailpipe-out NOx.
AB - A large fraction of diesel engine tailpipe NOx emissions are emitted before the aftertreatment components reach effective operating temperatures. As a result, it is essential to develop technologies to accelerate initial aftertreatment system warm-up. This study investigates the use of early exhaust valve opening (EEVO) and its combination with negative valve overlap to achieve internal exhaust gas recirculation (iEGR), for aftertreatment thermal management, both at steady state loaded idle operation and over a heavy-duty federal test procedure (HD-FTP) drive cycle. The results demonstrate that implementing EEVO with iEGR during steady state loaded idle conditions enables engine outlet temperatures above 400 °C, and when implemented over the HD-FTP, is expected to result in a 7.9% reduction in tailpipe-out NOx.
KW - Aftertreatment thermal management
KW - drive cycle
KW - early exhaust valve opening
KW - heavy-duty federal test procedure
KW - internal exhaust gas recirculation
KW - negative valve overlap
KW - thermal management
KW - variable valve actuation
UR - http://www.scopus.com/inward/record.url?scp=85053671327&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85053671327&partnerID=8YFLogxK
U2 - 10.1177/1468087417730240
DO - 10.1177/1468087417730240
M3 - Article
AN - SCOPUS:85053671327
SN - 1468-0874
VL - 19
SP - 758
EP - 773
JO - International Journal of Engine Research
JF - International Journal of Engine Research
IS - 7
ER -