Advanced combustion concepts with innovative waste derived fuels : doctoral thesis

english

doktorska dela

2019

0D thermodynamic calculation   advanced combustion concepts   alternative fuels   dissertations   doctoral thesis   internal combustion engines   pollutants emissions

Univerza v Ljubljani, Fakulteta za strojništvo
(Obvezni izvod spletne publikacije)

Numerical and experimental methodologies were developed in the dissertation with the goal of improving internal combustion engine control and decreasing engine-out exhaust emissions leading to mitigated impact on the environment. An innovative numerical method for simultaneous determination of the pressure and the top dead centre offset, which significantly reduces computational time compared to other methods, is presented in the numerical part of the dissertation. The experimental part of the dissertation comprises: - Development of a novel approach for the utilization of a pure tire pyrolysis oil (TPO) in a turbocharged and intercooled internal combustion engine without any hardware modifications with the introduction of the pilot injection. - Establishment of a partially premixed combustion (PPC) concept with a direct injection of diesel fuel, which also represents a benchmark for a novel fuel (TPO - a representative of low reactivity fuels) being assessed in the PPC. - Development of a methodology for the utilization of hydrotreated vegetable oil (HVO)/gasoline mixture in PPC. - Development of a methodology for establishing reactivity controlled compression ignition operation leading to a reduction of particulate matter and NOx emissions below EURO 6 levels without utilization of exhaust after-treatment systems at medium-load engine operation in a non-modified combustion chamber.

15.05.2023