Eventos Anais de eventos
ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
Diagnostic of Mechanical Fuel Injection Systems of Heavy Duty Diesel Engines Based on Measurement of Fuel Injection Pressure
Submission Author:
André Gustavo Soares Brasil Sampaio Costa , SP
Co-Authors:
André Gustavo Soares Brasil Sampaio Costa, Clayton Zabeu, Rafael da Cruz Ribeiro Berti, GUENTHER Krieger Filho
Presenter: André Gustavo Soares Brasil Sampaio Costa
doi://10.26678/ABCM.ENCIT2020.CIT20-0437
Abstract
Heavy duty combustion engines applied in power plants often need maintenance to operate efficiently in terms of break power output and within the allowed limits of emissions. Common malfunctions reported in this type of systems are associated to wear of injector and high-pressure pump components, spring pre-load reductions and others. This work is focused on testing mechanical fuel injection systems, evaluating the performance based on fuel injection pressure and comparing the aged components performances against the results of a reference system. The development of a bespoke rig to test the injection components has been considered, since the rig objective is to test components in the same conditions as operating in the engine. The results give an insight into the injection system behaviour characteristics such as start of injection, injection duration and pressure levels which affects the fuel atomization. The discussion highlights possible indicators to be derived from this diagnostic to assess amount of fuel injected. Also, the learning outcomes of this kind of analysis are of interest to monitor the injection system conditions throughout the life cycle of the components and maintain the engine working optimally.
Keywords
Diesel, Heavy duty engine, fuel injection system, injection pressure, Malfunctioning components
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