*Article* **Reduction of the Gaseous Emissions in the Marine Diesel Engine Using Biodiesel Mixtures**

### **Michal Puškár 1,\*, Melichar Kopas 1, Dušan Sabadka 1, Marek Kliment 1 and Marieta Šoltésová 2**


Received: 17 April 2020; Accepted: 2 May 2020; Published: 8 May 2020

**Abstract:** Taking into consideration the quality of air, it is necessary to ensure a continued reduction of the gaseous emissions that are produced by the maritime transport. The most e ffective solution of this serious worldwide problem is application of a suitable fuel mixture, which contains a bio-component, i.e. the biofuel. The presented scientific study is focused on influence of the biofuels on production of the gaseous emissions in the case of a diesel auxiliary engine, which is used in the ship transport. There were created various fuel mixtures with di fferent content of the bio-component in order to investigate their emission characteristics. The individual experimental measurements were performed at the di fferent engine loading levels and using a variable engine speed spectrum. The obtained results demonstrated a significant influence of the fuel mixtures on the whole combustion process, on the heat release process, on the pressure time behaviour as well as on the engine emission characteristics.

**Keywords:** reduction; gaseous emissions; biodiesel mixtures
