Modernization of the Mechanical Fuel System of a Diesel Locomotive Engine through Physical and Numerical Modeling

Leonid Plotnikov and Nikita Grigoriev
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Leonid Plotnikov: Turbines and Engines Department, Ural Federal University Named after the First President of Russia B. N. Yeltsin, Str. Mira 19, 620002 Yekaterinburg, Russia
Nikita Grigoriev: Turbines and Engines Department, Ural Federal University Named after the First President of Russia B. N. Yeltsin, Str. Mira 19, 620002 Yekaterinburg, Russia

Energies, 2021, vol. 14, issue 24, 1-15

Abstract: Reducing harmful emissions from exhaust gases and increasing energy efficiency are urgent tasks when designing reciprocating internal combustion engines. In this experimental work, the fuel system of a diesel locomotive engine operating on the Miller cycle is improved. The purpose of the study is to improve the environmental and economic indicators of diesel engines at minimal financial cost. The article provides an overview of the main research on improving fuel supply, mixing and combustion. The features of engine operation are also briefly described. Numerical simulation of the diesel engine operating cycle was performed before the bench tests. The experiments were performed on a full-size diesel engine with a power of 1200 kW. The measuring equipment and experimental technique are described in the article. The technical solutions that made it possible to improve the fuel supply are described. A new design for the high-pressure fuel pump drive is proposed. The optimal fuel injection advance angles are determined. An original design for the fuel pump plunger was developed. The proposed technical solutions made it possible to reduce fuel consumption by up to 3% (from 217.8 to 211.4 g/kW·h) and NOx emissions two-fold (from 19.4 to 8.8 g/kW·h).

Keywords: diesel locomotive engine; fuel supply process; fuel injection advance angle; high-pressure fuel pump; motor tests; operational and environmental indicators (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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