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Procedure for Validation Tests on Air Springs for Commercial Vehicles
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English
Abstract
Air spring systems are increasingly used on suspensions for commercial vehicles. To prove their durability a reliable test procedure is necessary:
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to be applied already in the development stage
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to be used to qualify individual air spring manufacturers
and
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to assure manufacturing quality.
In this paper the test procedure, the test facility and some test results are presented.
In the test facility the air spring is mounted on a fixture and is loaded by a servohydraulic actuator. The mounting of the air spring allows to simulate all operational deformations, being decisive for the durability. Based on the extensive measurements on proving ground and public roads the test program was worked out. The test program includes besides the loading and deformations during driving also kneeling operations as well as high and low temperatures.
The accelerated laboratory tests deliver results which correspond to the existing experience at the service usage.
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Citation
Fischer, G., Streicher, M., and Grubisic, V., "Procedure for Validation Tests on Air Springs for Commercial Vehicles," SAE Technical Paper 982841, 1998, https://doi.org/10.4271/982841.Also In
References
- Fuchs, D.G. Pearson, A.D Development of a New Freighliner Tractor Air Suspension SAE Paper 892390 1989
- Grubisic, V. Determination of the Load Spectra for Design and Testing Journal of Vehicle Design 15 1994 1 2 8 26
- Neugebauer, J. R. Grubisic, V. V. Fischer, G. Procedure for Design Optimization and Durability Life Approval of Truck Axles and Axle Assemblies SAE Paper 892535 1989
- Grubisic, V. Fischer, G. Methodology for Effective Design Evaluation and Durability Aprooval of Car Suspension Components SAE Paper 970094 1997 Steering and Suspension Technology