International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The paper presents numerical analysis of air after turbocharger cooling process and its influences on the gasoline engine operating parameters. Analysis was performed with numerical 0D (zero-dimensional) simulation model by using two sets of simulations – for gasoline turbocharged engine without air cooler and for the same engine with air cooler included. Between engine rotational speeds of 1000 rpm and 5000 rpm, air cooling process increases analyzed engine developed power and engine torque up to 20.67%, increases cylinder maximum pressure up to 17.03%, increases engine volumetric efficiency up to 23.65% and reduces brake specific fuel consumption up to 1.32% when compared with the same engine without air cooler. At the highest engine rotational speeds (between 5000 rpm and 6000 rpm) it was observed that selected air cooler does not offer the required and expected performance, so air cooling process in this engine operating area can and should be improved.

This study aims to determine the effects of canola biodiesel on engine performance characteristics and torque rise. In the experiments, canola biodiesel (B100) and diesel (B0) were used as fuel with mixtures by introducing canola biodiesel into diesel in proportions of 5% (B5), 10% (B10), 20% (B20), 50% (B50), and 80% (B80). These fuels were tested on an air-cooled direct injection four-cylinder diesel engine. Tests were run based methods indicated by the standard No. TS 1231. According to the results of the study, the engine’s torque rise values for diesel (B0), B5, B10, B20, B50, B80 and biodiesel (B100) fuels were 27%, 26%, 25%, 24%, 23%, 22% and 21% respectively. It was found that the increasing ratio of biodiesel in the mixture reduced the torque rise values. It was observed that the difference between the torque rise values of B5 and B0 were insignificant.

This paper presents the results of an analytical study for optimisation of the full-load operation of a compression ignition internal combustion engine with common rail fuel system. The model is made with the aid of the software simulation package Advanced Simulation Tools by AVL List GmbH. An existing engine is used as a prototype of the model – a PSA-manufactured DW10BTED4. The received characteristics from the performance are compared with the manufacturer data. A possible range of model improvements are also presented in the paper.