Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
0D/1D ANALYSIS OF THE PERFORMANCE AND EMISSIONS OF A NATURAL GAS ENGINE OPERATING ON ETHANOL
Submission Author:
Miguel Barrientos , MG
Co-Authors:
Miguel Barrientos, Leonel R Cancino, Amir Antonio Martins Oliveira, Gabriel de Andrade Janene Gonini, Milton Keisy Kouketsu, Javier Antonio Mendoza Corredor
Presenter: Miguel Barrientos
doi://10.26678/ABCM.COBEM2023.COB2023-1151
Abstract
This work presents a comprehensive numerical analysis of an internal combustion engine (ICE) using a 0D/1D simulation approach. The analysis focuses on simulating a natural gas-fueled stationary engine for electricity generation (Vortec 3.0 - LW6) operating with ethanol. The study includes an in-depth investigation of engine performance parameters such as power, torque, and brake-specific fuel consumption (BSFC), as well as engine emissions including nitrogen oxides (NOX), hydrocarbons (HC), and carbon monoxide (CO). Furthermore, the procedure used to characterize the engine’s geometric parameters, dimensions, valve lift curves, and other necessary details for the 0D/1D simulations is described. For the combustion process, the Vibe 2-Zone combustion model is used together with literature data to define the function parameters for the analyzed fuels. In addition, models provided by AVL-BOOST™ are used to describe the formation of the cambustion product emissions of natural gas and ethanol, respectively. The obtained results show a clear difference in engine performance based on the type of fuel. Specifically, in the case of the engine operating with ethanol, a significant increase in output power is observed compared to the engine running on natural gas. However, the use of ethanol results in a significant increase in specific fuel consumption due to its lower heating value and lower air/fuel ratio. Furthermore, the analysis demonstrates that the use of ethanol allows for a reduction in NOX emissions across the entire analyzed rotational range due to lower combustion temperatures. However, higher HC and CO emissions are observed. Overall, the study provides valuable insights into the performance and emissions of the engine when operating with natural gas and ethanol. The results can be used to optimize the design and operation of the engine to achieve the desired balance between efficiency and emissions in various applications.
Keywords
AVL Boost, Internal combustion engine, 0D/1D simulation, Combustion
