NOx Reduction in a Medium-Speed Single-Cylinder Diesel Engine using Miller Cycle with Very Advanced Valve Timing
Date Published: 2009-09-13
Paper Number:2009-24-0112
DOI: 10.4271/2009-24-0112
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, doi:10.4271/2009-24-0112.
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.
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