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Undersökning av semiaktiv dämpning för BvS10
2014 (English)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The BvS10 is an armoured all-terrain vehicle produced and developed by BAE Systems Hägglunds AB. During the last years, development of the product made it heavier increasing the weight from 10 to 16 tonnes. The steering device, coupling the two bodies together, have been updated to withstand the weight increase. The steering device consists of four hydraulic cylinders and a rotational joint. These can turn and tilt the vehicle and allows for large differences between the angle of the front and rear bodies, thus increasing the accessibility of the vehicle.A semi-active suspension system was installed in BAE Systems other product the CV90, a combat vehicle. Since then, installing a similar system on the BvS10 has been in the interest of the company. The aim of the project is to analyse if an increase in size of the tilt cylinders would benefit a semi-active control of the flow to and from the cylinders. A proposed solenoid valve from Öhlins Racing AB will also be investigated, whether it suits to control the system and where is should be placed.Analysis show that a larger span of damping force would advantageous for the BvS10, therefore increasing the size of the tilt cylinders is necessary to withstand the forces and increase the life-span. The analysed data and simulations show that the proposed solenoid valve is capable to handle both the flows and the pressure of the hydraulic system. However, the pressure is outside of the valve's optimal performance range, which is why the valve has to be tested in the environment to ensure it passes the requirement specification. The solenoid valve should be placed in the valve block on the steering device, providing the best accessibility and function.

Place, publisher, year, edition, pages
2014. , 67 p.
Keyword [en]
Keyword [sv]
Teknik, BvS10, semi-active, suspension, hydraulic system, BAE Systems, Hägglunds
URN: urn:nbn:se:ltu:diva-51982Local ID: 9243faf8-d757-4ac2-9ebb-85ce0acac6f7OAI: diva2:1025348
External cooperation
Subject / course
Student thesis, at least 15 credits
Educational program
Automotive Engineering, bachelor's level
Validerat; 20140910 (global_studentproject_submitter)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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