Abstract
The paper discusses the identification of malfunctions in the EGR system based on a list of OBD II error codes. The authors monitored EGR systems of vehicles fitted with DURATORQ TDCi engines. The Analysis of the processes of heat transfer and mass exchange in the engine intake system drew attention to a number of simplifications in the formal description introducing a wide range of tolerance for the instantaneous recirculation rate. The aim of this study was to determine the influence of diesel oil, Ekodiesel Ultra with biocomponents and B10 fuel used for the fueling of diesel engines on the formation of deposits in the EGR system. The analysis was performed in a laboratory utilizing the methods of energy dispersive X-ray fluorescence and infrared spectroscopy.
Highlights
The optimization of the process of charge combustion in a multiple injected diesel engine using hydrocarbon and biocomponent fuels in a Common Rail system sets the main trends in the research and development works on diesel engines
A symptom of these modifications is the development of a system allowing homologation compliance with respect to the emission limits, : CO, HC, NOx and particulate matter (PM)
Research into innovative processes of exhaust gas catalysis and advancement of the design of Diesel Particulate Filters (DPF) filters are convergent with the improvement of the physical chemical characteristics of FAME biofules containing certain selected conditioners [3, 8]
Summary
The optimization of the process of charge combustion in a multiple injected diesel engine using hydrocarbon and biocomponent fuels in a Common Rail system sets the main trends in the research and development works on diesel engines. A symptom of these modifications is the development of a system allowing homologation compliance with respect to the emission limits, : CO, HC, NOx and particulate matter (PM) Exhaust aftertreatment systems such as exhaust gas recirculation (EGR), catalytic converters and Diesel Particulate Filters (DPF) are used increasingly. Parallel to the advancement of EGR systems for the reduction of the NOx concentration engineers introduce SCR systems (Selective Catalytic Reduction) using AdBlue or DEF (Diesel Exhaust Fluid) complying with the quality requirements of the ISO-22241 standard. The manufacturers of diesel engines for modern farm tractors declare the compatibility of their engines with the B100 biofuels provided the EN/PN 14213 quality standard is met In this case the application of EGR systems is reduced to the benefit of the SCR systems using AdBlue. A chemical composition of the fuel introduces a low thermal stability and susceptibility to polymerization the result of which is sludge formation [4]
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