National and University Library, Ljubljana (NUK)
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Analysis of energy efficiency of a test rig for air springsOkorn, Ivan, strojnik ; Nagode, MarkoDuring dynamic testing of vehicle air springs, work is required for loading the springs. This work is partially returned by the spring to the driving system during the release phase. Testing is ... energy-efficient when at least a portion of the returned work can be utilised. This was taken into account in the design of the new inovative test rig for the simultaneous testing of four air springs. There is a phase shift between the phases of loading individual air springs; thus, the work returned to the drive system by a spring during its release is also used for loading another spring. The test rig was constructed and operates in the laboratory of an air spring manufacturer. We developed a computer program to analyse the energy situation in the test rig. The program calculates the work required for loading the springs, power and friction for different sizes of springs and test conditions. In this paper, computational algorithms are deduced and the results of the calculation for the treated spring are presented. The energy situation in the test rig during start-up and operation is discussed, taking into account the energy loss due to the hysteresis of springs and friction losses. The friction losses are evaluated for different implementations of critical elements. The influence of a flywheel on conditions during the start-up and operation of the test rig is analysed.Source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Vol. 61, no. 1, Jan. 2015, str. 53-62, SI 9)Type of material - article, component partPublish date - 2015Language - englishCOBISS.SI-ID - 13857051
Author
Okorn, Ivan, strojnik |
Nagode, Marko
Topics
zračne vzmeti |
preizkuševališča |
energijska učinkovitost |
vztrajniki |
histereza vzmeti |
torne izgube
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source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Vol. 61, no. 1, Jan. 2015, str. 53-62, SI 9)
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Okorn, Ivan, strojnik | 10370 |
Nagode, Marko | 13469 |
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