Improvement of Environmental Characteristics of Diesel Locomotive Engine with Turbocharging by Changing Valve Timing (Based on Miller Cycle)

  • L. V. PlotnikovEmail author
  • S. Bernasconi
  • P. Jacoby
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)


The article presents the results of upgrading a diesel locomotive engine with turbocharging and a cylinder with the diameter of 210 mm and a piston stroke of 210 mm through changing the valve timing (based on the Miller cycle). The research was carried out with numerical simulation in the ACTUS programme and based on experimental studies of test benches at the Ural Diesel Motor Plant. In the course of mathematical modelling, the hypothesis of the positive effect of an early closure of the intake valve on the diesel engine’s environmental performance was tested. It has been established that an early closure of the intake valve leads to a reduction in NOx emissions in exhaust gases by up to 20% with a slight change in power and specific fuel consumption (±3%). Based on the experimental research on diesel performance, comparative harmful emission diagrams for the basic and upgraded engines (NOx, CO and CH) are constructed. It was experimentally established that the change in the gas distribution phases (based on the Miller cycle) leads to a 16% decrease in NOx content, a 50% reduction in CO and a 54% reduction in CH. At the same time, a decrease in the specific effective flow rate reaches a value of 3.3% for certain operating modes of the diesel engine. The values obtained for the concentration of harmful emissions in exhaust gases are substantially lower than those required by international standards.


Piston internal combustion engine Valve timing Miller cycle Ecology Experimental studies Numerical simulation ACTUS 


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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Ural Federal University Named After the First President of Russia B.N. YeltsinEkaterinburgRussia
  2. 2.ABB Turbo Systems Ltd.BadenSwitzerland

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