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Response Time Estimation of a Hydraulic Actuator Applied at Automated Manual Transmissions
Technical Paper
2014-36-0430
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A hydraulic accumulator used in gear selection phase of an automated manual transmission was studied to employ simulations which could predict response time of entire system. A spring-mass-damper mathematical model was created from real data and response time measured in acquisitions of a first prototype system built.
The model objective was to determine values for damper coefficient and spring mass rate to be used in the design of a pair of springs with enough stiffness to achieve system response time desired. With prototype data and mathematical model developed, predictions about response time of a final system were performed and a spring rate value was determined to satisfy with response time requested.
From model data, numerical structural analyses were performed in order to predict eventual final system failures due to the stiffness values involved. Designed springs according to specified stiffness were assembled at final system and response time data were acquired and compared to the model predictions, accomplishing the response time desired.
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Authors
- João Vitor Petermann Mazziero - Magneti Marelli Powertrain
- Thomas Maciel Moura - Magneti Marelli Powertrain
- Rafael Henrique Garcia - Magneti Marelli Powertrain
- Sergio Gradella Villalva - Magneti Marelli Powertrain
- José das Neves - Magneti Marelli Powertrain
- Marcos Paulo dos Santos - Magneti Marelli Powertrain
- Fernando Luiz Windlin - Magneti Marelli Powertrain
Citation
Mazziero, J., Moura, T., Garcia, R., Villalva, S. et al., "Response Time Estimation of a Hydraulic Actuator Applied at Automated Manual Transmissions," SAE Technical Paper 2014-36-0430, 2014, https://doi.org/10.4271/2014-36-0430.Also In
References
- free cHoice - The pleasure of change - BASIC COURSE A part Magneti Marelli Course September 2008
- Mazziero , J. AMT Selection Actuator Spring Magneti Marelli Technical Report June 2013
- Inman , D. Engineering Vibration New Jersey Prentice Hall 2001
- Garcia , R. AMT components structural simulation Magneti Marelli Technical Report September 2013
- Budynas , R. Nisbett , K. Shigley's Mechanical Engineering Design McGraw-Hill Primis 2006
- Mazziero , J. AMT Design Spring Results - Selection Actuator Magneti Marelli Technical Report November 2013