Optimization of Valve-Train Components for Durability Analysis by Using Finite Element Analysis Method

Abstract

For improved engine performance, the valve-train components must concern the parameters durability, environmental norms, the shorter valve response time, and lightweight design solution. In the valve-train system for designers and manufacturers, the stress concentrations accumulated on the valve due to the partial contact, which further cause failures in the valve. The partial contact between the valve, insert, and guide becomes uneven because of the thermal distortion load of the valve insert and guide. This paper proposes a detailed engineering analysis using finite element method of an automotive engine valve-train system using lightweight titanium for intake and exhaust valve. The complete structural virtual simulation assessment, the 3D linear heat transfer, and stress–strain approach used to get thermo-mechanical loading effect on valve-train system. The simultaneous comparative evaluation of existing steel grade material with proposed titanium material as a tensile test results benchmark. In addition, to define the material life characteristic the fatigue factor of safety evaluated by using Soderberg stress-life cycle in terms of both materials. Thus, the titanium alloy has enough potential as an optimal better material and high strength-to-weight ratio for the improved engine performance in compared to steel alloy.