Design and Simulation of a Carburattor to Run an Otto Engine on Producer Gas

Abstract

This study presents the design and simulation of a carburetor optimized for internal combustion engines running on producer gas, a renewable fuel derived from biomass. Due to the lower energy density of producer gas compared to conventional fuels, achieving an optimal air-fuel ratio is critical for efficient combustion. Several carburetor models were developed and simulated using ANSYS to assess their mixing performance and ability to maintain the required air-fuel ratio under varying conditions. The simulations highlighted challenges in achieving a homogeneous mixture, with early models exhibiting poor mixing and safety risks, such as the potential for backfire due to inadequate pressure relief
mechanisms. To address these issues, successive models incorporated design improvements and optimized nozzle configurations, which significantly enhanced the mixing quality. The final model demonstrated a substantial improvement in the uniformity of the air-fuel mixture, ensuring stable engine operation. These findings underline the importance of precise control over the mixing process in carburetor design for alternative fuels like producer gas. The results provide a foundation for further refinement and practical implementation of this technology, contributing to the development of more sustainable energy solutions.