Performance Optimization of an Exhaust System for 4 Cylinder Engine by Implementation of Computational Fluid Dynamics, Acoustic and Thermal Analysis
2022-01-0765
03/29/2022
- Event
- Content
- The engine system requirements have changed from being focused only on delivering engine power to now having to meet environmental emission standards. The exhaust system collects exhaust gases from the combustion cylinders, eliminates dangerous pollutants, decreases noise, and discharges the purified exhaust gases at a safe distance from the vehicle's occupants. Designs of lightweight models for exhausts were always aimed at using newer lighter materials. As the design of an exhaust is more or less fixed, this approach is hardly profitable anymore. The most important components of an exhaust system are the exhaust manifold, the catalytic converter, the muffler, the resonator and connecting all of them together are connecting exhaust pipes. In this paper, the optimization of the various elements of 4 cylinder 1.8L engine exhaust system is carried out with the help of analysis software ANSYS 19.2 workbench, by performing ‘Steady State Thermal Analysis’, ‘Acoustic Analysis’ and simulating the flow in the components using ANSYS FLUENT. A comparative study between the standard and modified models are undertaken in this research in order to understand how the system reacts to perturbations of its parameters. Different materials such as T300 Carbon Fiber Composite and Inconel 718 super alloy were incorporated into the components for weight optimization and improved thermal resistance. The exhaust system was improved holistically.
- Citation
- Aiyan, M., Sagar, S., and Raghav S, S., "Performance Optimization of an Exhaust System for 4 Cylinder Engine by Implementation of Computational Fluid Dynamics, Acoustic and Thermal Analysis," SAE Technical Paper 2022-01-0765, 2022, .