This research studies the possibility of the reduction of the emission values emitted by a diesel engine, by adding hydrogen to the fuel mixture. Due to the higher pollution restrictions implemented globally on the internal combustion engines, for new but also older vehicles, suitable solutions must be found, even for diesel engines, towards major incriminations concerning pollution are attested. The water electrolytic conversion for hydrogen production is achieved by using a special device, in symbioses with the internal combustion engine. The hydrogen quantity, as resulted from the process and fuelled into the engine, represents 10% of the total volume of the intake capacity. Being directly correlated to the stoichiometric ratio, the intake of hydrogen is finally controlled; therefore the total calorific power of the fuel mixture is increasing. The calorific value of Diesel is 44.8 MJ/kg, while that of hydrogen is 141.8 MJ/kg. Since the addition of hydrogen represents 10% of the total intake capacity, the addition of total calorific value of the mixture fuelled raises by approximate 30%. All the measurements have been done in a lab using a certified and approved gas analyser.
Due to the stricter and stricter European restrictions on diesel engines, fewer manufacturers produce vehicles fuelled by diesel and since not anyone affords new vehicles and the out-of-use diesel vehicle waste would be huge. New ways of improving the pollution levels on currently registered vehicles must be found. The article presents a novel approach focusing on this scope, starting with the basic actual engine, and developing by retrofitting up to mechanical and software upgrades, aiming to raise the output of mechanical characteristics and simultaneous reduction of exhaust pollution. In short, the paper is focusing on research regarding the effects of a diesel engine’s control unit retrofitting.
The current tendency in the eastern part of Europe is to modify old diesel engines with the purpose of improving characteristics in terms of horsepower and torque, but also to reduce the generated pollution. The diesel engines are still in use, against to the tendencies of renouncing to their support, at least in larger urban & industrial areas, where the pollution level, especially the particulate matter (particles PM10, PM2.5) and ozone concentrations, also the NOx are supposed to be generated mostly by diesel engine vehicles. The paper presents results concerning the influence of modifying the diesel engine control unit’s parameters, such as injection quantity, start of injection, intake air pressure and all the others correlated for better performance. The article brings into attention possibilities to reduce the exhaust pollution concentrations, correlated by simultaneous ways of improving the external characteristics of the engine by modifying the engine control unit’s parameters. Measurement results of a compression ignited internal combustion engine before and after the retrofitting, by reparametrization, meaning changing the parameters are presented and discussed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.