TY - JOUR
T1 - Dynamic cylinder activation in diesel engines
AU - Gosala, Dheeraj B.
AU - Allen, Cody M.
AU - Shaver, Gregory M.
AU - Farrell, Lisa
AU - Koeberlein, Edward
AU - Franke, Brian
AU - Stretch, Dale
AU - McCarthy, James
N1 - Funding Information:
The authors would like to thank their teammates at Herrick labs, especially Mrunal Joshi, project manager Eric Holloway, and test cell technician David Meyer, for the support they have extended toward this work. The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This project was funded by Cummins and Eaton.
Publisher Copyright:
© IMechE 2018.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - Cylinder deactivation has been recently demonstrated to have fuel savings and aftertreatment thermal management benefits at low to moderate loads compared to conventional operation in diesel engines. This study discusses dynamic cylinder activation as an effective variant to fixed diesel engine cylinder deactivation. The set of inactive and active cylinders varies on a cycle-by-cycle basis during dynamic cylinder activation. This enables greater control over forcing frequencies of the engine, thereby allowing the engine to operate away from the drivetrain resonant frequency at all engine speeds, while maintaining similar fuel savings, thermal management, and emission characteristics as fixed cylinder deactivation. Additional benefits of dynamic cylinder activation include a reduction in the consecutive number of cycles a given cylinder is deactivated, and more even cylinder usage. Enablement of engine operation without exciting drivetrain resonant frequencies at similar fuel efficiency and emissions as fixed cylinder deactivation makes dynamic cylinder activation a strong candidate to augment the benefits already demonstrated for fixed cylinder deactivation.
AB - Cylinder deactivation has been recently demonstrated to have fuel savings and aftertreatment thermal management benefits at low to moderate loads compared to conventional operation in diesel engines. This study discusses dynamic cylinder activation as an effective variant to fixed diesel engine cylinder deactivation. The set of inactive and active cylinders varies on a cycle-by-cycle basis during dynamic cylinder activation. This enables greater control over forcing frequencies of the engine, thereby allowing the engine to operate away from the drivetrain resonant frequency at all engine speeds, while maintaining similar fuel savings, thermal management, and emission characteristics as fixed cylinder deactivation. Additional benefits of dynamic cylinder activation include a reduction in the consecutive number of cycles a given cylinder is deactivated, and more even cylinder usage. Enablement of engine operation without exciting drivetrain resonant frequencies at similar fuel efficiency and emissions as fixed cylinder deactivation makes dynamic cylinder activation a strong candidate to augment the benefits already demonstrated for fixed cylinder deactivation.
KW - aftertreatment thermal management
KW - Cylinder deactivation
KW - drivetrain resonance
KW - dynamic cylinder activation
KW - fuel economy
KW - torsional vibrations
KW - variable valve actuation
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U2 - 10.1177/1468087418779937
DO - 10.1177/1468087418779937
M3 - Article
AN - SCOPUS:85049005988
SN - 1468-0874
VL - 20
SP - 849
EP - 861
JO - International Journal of Engine Research
JF - International Journal of Engine Research
IS - 8-9
ER -