Diesel Process Research Articles

Effective indicators of diesel powered by natural gas and alcohol-fuel emulsions

Improving the fuel and energy performance of internal combustion engines is an urgent task, since the level of air pollution in a number of cities significantly exceeds sanitary standards, and the shortage of fuel resources is increasing. Experience shows that the development of a fundamentally new environmentally friendly and at the same time highly economical engine is associated with deep and long - term research, so according to the accepted methodology for conducting research on the use of natural gas (NG), NG with cooled recirculation (EGR), methanol-(MFE) and ethanol-fuel emulsions (EFE), comparative tests of diesel running on the diesel process (DP), gas-diesel process (GDP), GDP with EGR, MFE and EFE are presented.

Experimental determination of double vibe function parameters in diesel engines with biodiesel

A zero-dimensional, one zone model of engine cycle for steady-state regimes of engines and a simplified procedure for indicator diagrams analysis have been developed at the Laboratory for internal combustion engines, fuels and lubricants of the Faculty of Mechanical Engineering in Kragujevac. In addition to experimental research, thermodynamic modeling of working process of diesel engine with direct injection has been presented in this paper. The simplified procedure for indicator diagrams analysis has been applied, also. The basic problem, a selection of shape parameters of double Vibe function used for modeling the engine operation process, has been solved. The influence of biodiesel fuel and engine working regimes on the start of combustion, combustion duration and shape parameter of double Vibe was determined by a least square fit of experimental heat release curve.