Design and Evaluation of a Suspension System with Variable Parameters
Shadi Munshi1, Sufyan Azam2, Mohammad Gadoori3

1Shadi Munshi*, Department of Mechanical Engineering, College of Engineering and Islamic Architecture, Umm Al-Qura University, Makkah, Saudi Arabia.
2Sufyan Azam, Department of Mechanical Engineering, College of Engineering and Islamic architecture, Umm Al-Qura University, Makkah, Saudi Arabia.
3Mohammad Gadoori, Department of Mechanical Engineering, College of Engineering and Islamic Architecture, Umm Al-Qura University, Makkah, Saudi Arabia. 

Manuscript received on September 09, 2020. | Revised Manuscript received on September 22, 2020. | Manuscript published on October 10, 2020. | PP: 107-112 | Volume-9 Issue-12, October 2020 | Retrieval Number: 100.1/ijitee.L79301091220 | DOI: 10.35940/ijitee.L7930.1091220
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Suspension systems are designed for the increase in comfort and stability in vehicles while driving. Parameter changes in these systems affect overall performance. Researchers are continuously working on the performance enhancement of suspension systems by designing dampers of variable damping coefficient. In this research work a quarter car model suspension system was developed to demonstrate experimentally the influence of changing the damping coefficient, the stiffness, and the loading level to fully understand the allowable combination of parameters for a smoother ride. A variety of different test scenarios are implemented to the system to observe the variations in damping ratio. The damping ratio of the system found to be dependent on the design of the opening mechanism. The valve opening methods can give different results with the same parameters. 
Keywords: Variable damping, Suspension, Stiffness, Stability, Comfort.