Enhancing the Fuel Efficiency and Environmental Performance of Spark-Ignition Engines through Advancements in the Combined Power Regulation Method Jonas Matijošius, Sergiy Rychok, Yurii Gutarevych, Yevhenii Shuba, Oleksander Syrota, et al. Energies, 2024 A major issue with spark-ignition engines is their fuel inefficiency and negative environmental effects, especially in urban driving situations. This topic is of utmost importance considering the increasing apprehension over environmental contamination and the need for enhanced energy efficiency. The research’s originality resides in its strategy to tackling this issue without necessitating intricate engine changes, a manner not commonly used. The research uses a dual strategy that integrates both theoretical and experimental approaches. The theoretical component entails developing models to forecast the effects of different cylinder deactivation strategies on fuel consumption and emissions. Important factors to address in this theoretical model are the introduction of air into cylinders that are not in use and the stopping of fuel supply. The experimental component involves conducting bench experiments on a modified spark-ignition engine to verify the theoretical conclusions. These tests assess performance metrics, such as fuel economy and environmental effect, under different load situations. The study’s findings are encouraging. The study reveals that disabling a specific group of cylinders while permitting unrestricted air intake might result in significant improvements in fuel economy, anywhere from 1.5% to 10.5%, depending on the engine’s workload. Bench testing revealed a maximum improvement of 10.8%, which demonstrates the efficacy of this strategy. The study’s findings indicate that the use of the integrated power regulation approach greatly improves fuel efficiency and decreases the impact of the environmental consequences of spark-ignition engines, especially in situations of low load and idling. This technology demonstrates its feasibility as a solution that can be seamlessly incorporated into current engine designs with few adjustments, providing a practical and environmentally responsible option for enhancing vehicle performance. The results indicate that this approach has wide-ranging potential uses in the automotive sector, particularly for urban cars that often function in situations with modest levels of demand. By using this approach, manufacturers may attain enhanced fuel efficiency and diminish emissions, this contributing to the development of more sustainable urban transportation options.
Testing the Indicators of Diesel Vehicles Operating on Diesel Oil and Diesel Biofuel Jonas Matijošius, Olga Orynycz, Sergii Kovbasenko, Vitalii Simonenko, Yevheniy Shuba, et al. Energies, 2022 The growth in the number of cars and the increasing demand for fuels require scientific work to develop alternative fuels. The energy crisis, which is becoming more and more evident, is not unimportant. The manuscript presents an analysis of the possibility of using agricultural biofuels to power a diesel engine. The analysis was carried out in relation to the operation of the engine on conventional fuels. The D-241 engine under investigation is mainly used for agricultural tractors. During the tests carried out, the load characteristics of the diesel engine under investigation were determined as a function of fuel type and speed. The concentrations of CO, HC and NOx were analysed. Laboratory tests of the engine were carried out with a wide range of external loads to evaluate measurement errors for the measurement method. Experiments with the engine under investigation have shown that the hourly and specific biofuel consumption of diesel engines increases by an average of 11–16%. CO and NOx concentrations were found to be lower with increasing load compared to conventional diesel engines, while NOx concentrations are slightly increased. In all cases investigated, a decrease in exhaust development was observed.
Using Mathematical Modeling to Evaluate the Performance of a Passenger Car When Operating on Various Fuels Ivan Manko, Jonas Matijošius, Yevheniy Shuba, Alfredas Rimkus, Serhiy Gutarevych, et al. Energies, 2022 This article presents the results of experimental and computational studies of the performance of a car with a gasoline engine with spark ignition when retrofitted with a system of liquefied petroleum gas (LPG). To analyze the impact of the use of LPG instead of gasoline, the mathematical model of the car’s movement according to the modes of the European driving cycle has been refined. It was established that when using LPG for a car in the driving cycle, fuel consumption in energy units decreases by 10.38%. Gas consumption, determined in mass units, is lower than gasoline consumption. In load modes, this difference is about 8% and in idle mode, it reaches 16–18%. The adequacy of the mathematical model is confirmed by experimental studies of the car on modern equipment with the measurement of fuel efficiency and environmental performance in motion, according to the specified cycle. The deviation of the calculated fuel consumption from the results of experimental studies does not exceed 0.86%. The values of environmental indicators obtained by calculations on the mathematical model differ from the experimental ones by an average of 15%. The conducted studies showed the expediency of using LPG by retrofitting a car with a gasoline engine with an LPG power supply system and the possibility of using mathematical modeling to assess the feasibility of such retrofitting.
EFFECT OF THE ADDITION OF HYDROGEN-CONTAINING GAS ON INDICATED AND EFFECTIVE PARAMETERS OF A GASOLINE ENGINE Proceedings of Whec 2022 23rd World Hydrogen Energy Conference Bridging Continents by H2, 2022
USE OF A THERMOELECTRIC DEVICE TO MAINTAIN OPTIMAL AIR TEMPERATURE AT THE INTAKE OF A SPARK-IGNITION ENGINE WHEN OPERATING ON ALCOHOL-CONTAINING GASOLINE Journal of Thermoelectricity, 2022
ON THE PROSPECTS OF USING THERMOELECTRIC COOLERS TO MAINTAIN OPTIMAL AIR TEMPERATURE IN THE INTAKE MANIFOLD OF INTERNAL COMBUSTION ENGINE FOR IMPROVING ITS PERFORMANCE CHARACTERISTICS Journal of Thermoelectricity, 2021
