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Development Of An Automotive Shock Absorber That Improves Riding Comfort Without Impairing Steering Stability
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Abstract
In order to further improve both vehicle vibration and riding comfort, it is necessary to put the damping force of the shock absorvers to effective use. (1)
In this study, the operating range of the shock absorber piston stroke and velocity was first measured under each of the various driving conditions, and damping force requirements were studied. It was found, as a result, that if damping characteristics dependent not only on piston velocity but also on piston stroke could be provided, that high levels in regard to such factors as handling performance, riding comfort, ride harshness and road holding can be achieved.
Next, in order to produce this damping characteristic, a shock absorber was developed that takes advantage of a phenomenon in which it takes a certain amount of time for a vortex to occur in the hydraulic fluid. (2) Through the appropriate setting of damping characteristics in this vortex-type shock absorber, riding comfort on smooth roads can be improved while the other factors are maintained at the same level as in the conventional shock absorber.
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Citation
Fukushima, N., Iida, M., and Hidaka, K., "Development Of An Automotive Shock Absorber That Improves Riding Comfort Without Impairing Steering Stability," SAE Technical Paper 845052, 1984, https://doi.org/10.4271/845052.Also In
References
- Fukushima N. Hidaka K. Iwata K. “OptimumCharacteristics of Automotive Shock Absorbersunder Various Driving Conditions and RoadSurfaces.” JSAE Review 10 March 1983
- Harada S. Watanabe T. Trans. of the JSME (in Japanese) 1068 1074 43 367 1977
- Konami Tsukahara Trans. of the JSME (in Japanese) 1050 1061 43 367 1977
- Bichara R.T. Orner P.A. “Analysis and Modeling of the Voltex Amplifier.” Trans. of the ASME 755 763
- Chow S.K. “An Experimental Study on the Characteristics of Vortex Valves” IFAC Symposium on Fluidics 1968