NOx Reduction in a Medium-Speed Single-Cylinder Diesel Engine using Miller Cycle with Very Advanced Valve Timing 2009-24-0112
The objective of this study is to achieve high reduction of NOx emissions in a medium-speed single-cylinder research engine. The main feature of this research engine is that the gas exchange valve timing is completely adjustable with electro-hydraulic actuators. The study is carried out at high engine load and using a very advanced Miller valve timing. Since the engine has no turbocharger, but a separate charge air system, 1-D simulations are carried out to find the engine setup, which would be close to the operating points of a real engine. The obtained NOx reduction is over 40% with no penalty in fuel consumption.
Citation: Imperato, M., Antila, E., Sarjovaara, T., Kaario, O. et al., "NOx Reduction in a Medium-Speed Single-Cylinder Diesel Engine using Miller Cycle with Very Advanced Valve Timing," SAE Technical Paper 2009-24-0112, 2009, https://doi.org/10.4271/2009-24-0112. Download Citation
Matteo Imperato, Eero Antila, Teemu Sarjovaara, Ossi Kaario, Martti Larmi, Ilari Kallio, Sten Isaksson
TKK, Helsinki University of Technology, Finland, Wärtsilä Finland Oy
9th International Conference on Engines and Vehicles