New Thermo Mechanical Analysis of Engine Valve using a Multi-Field Approach

  P. Arul Murugan,  S. Ranganathan

Exhaust valve of an Internal Combustion engine is one of the most crucial parts. It is the main cause of most problems like preignition, burned valves etc. Design of the valve depends on many parameters like behavior of material at high temperature, fluid dynamics of exhaust gas, oxidization characteristics of valve material and exhaust gas, fatigue strength of valve material, configuration of the cylinder head, coolant flow and the shape of the exhaust port. The most important factor affecting the performance of a valve is its operating temperature. The three-dimensional geometries of the cylinder head and the water jacket were modeled by means of a computer-aided engineering tool. Commercial finite element and computational fluid dynamics codes were used to compute details of mechanical stress in the head and flow details in the cylinder and cooling jacket, respectively. To analyze the valve ANSYS is used as the tool. Thermal and structural analyses are performed on the valve. The results were in good agreement with experimental data. The results show high stresses at the valve bridge. Cylinder head temperatures and comparison of output power with high stress measurements, often exceeding the elastic limit, were found at the valve bridge.

Keywords- Thermo mechanical, Engine cooling, Exhaust valve, Temperature, Heat transfer.

Unique Identification Number - IJEDR1502168
Page Number(s) - 958-961
Pubished in - Volume 3 | Issue 2 | May 2015
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  P. Arul Murugan,  S. Ranganathan,   "New Thermo Mechanical Analysis of Engine Valve using a Multi-Field Approach", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.3, Issue 2, pp.958-961, May 2015, Available at :http://www.ijedr.org/papers/IJEDR1502168.pdf