EVALUATION OF THE IMPACT OF TEMPERATURE VARIATIONS IN SELECTED FUELS ON THEIR ATOMIZATION IN INTERNAL COMBUSTION ENGINES WITH COMMON RAIL INJECTION SYSTEMS

Wojciech Karpiuk; Marek Idzior; Rafał Smolec; Mateusz Bor

Wojciech Karpiuk Poznan University of Technology, Faculty of Machines and Transport
Marek Idzior Poznan University of Technology, Faculty of Machines and Transport
Rafał Smolec Poznan University of Technology, Faculty of Machines and Transport
Mateusz Bor Poznan University of Technology, Faculty of Machines and Transport

Keywords: common rail, FAME, temperature, density, viscosity, diesel fuel, rapeseed oil, fuel injection

Abstract

The first part of this paper presents an evaluation of the rheology of three fuel types for compression ignition engines, i.e. a conventional fuel grade and two biofuel grades, each with rapeseed oil. The analysis completed for this work has uncovered that a clear relationships exist between fuel temperature, density and viscosity. The second part of this paper is a determination of stream parameters of the analyzed fuels injected into a specially designed metering chamber via a common rail injection system. The third and last part of this paper is an evaluation of the microstructure of rapeseed stream by division of the stream into contours of different light reflectivity values corresponding to different fuel concentrations within the stream.

Keywords:
common rail, FAME, temperature, density, viscosity, diesel fuel, rapeseed oil, fuel injection