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dc.contributor.authorComellas Andrés, Martí
dc.contributor.authorPijuan Cases, Jordi
dc.contributor.authorRoca Enrich, Joan
dc.contributor.authorPotau, Xavi
dc.date.accessioned2018-02-15T14:12:42Z
dc.date.available2018-02-15T14:12:42Z
dc.date.issued2012
dc.identifier.urihttp://hdl.handle.net/10459.1/62664
dc.description.abstractThere is a growing interest in developing systems that allow the mobility of vehicles in rugged terrain, as in forestry areas, where conventional wheeled vehicles have limitations. Four axle vehicles with bogies can adapt the position of the wheels to follow irregularities in the terrain, having an obstacle surpassing ability far greater than conventional 2-axle vehicles. Still, the ability to overcome discrete obstacles on a steep slope is very different depending on the wheel that is facing the obstacle. A possible solution to diminish this variation can be found if the vehicle is able to actively redistribute the load on each wheel. One strategy is to design the suspension mechanism so it can adjust chassis’ height, being able to level it. Also, an active torque on the pin join between the bogie and the chassis can be applied achieving a redistribution of the load, adopting a system of active bogies. This study examines the longitudinal motion of a vehicle along ascending ramps, with different slope, at the time that one of its wheels is facing an obstacle. Results for different vehicle’s configurations are presented, and the efficiency of the proposed driveline is calculated in different situations. Results show that the use of active bogies provides improved capacity to overcome obstacles, active chassis levelling can also provide an improvement in the obstacle surmounting ability. However, the wheels of the front bogie are negatively affected by the height regulation, so implementing a permanent chassis levelling is not the best solution. The driveline efficiency results are considerably lower than the combination of the maximum efficiency values of each of the components because they all never work simultaneously at their maximum efficiency working point. In addition, the overall driveline efficiency is highly dependant on the operating conditions of each of the elements and their operation mode.ca_ES
dc.language.isoengca_ES
dc.publisherInternational Conference of Agricultural Engineeringca_ES
dc.relation.isformatofReproducció del document publicat a: https://www.cabdirect.org/cabdirect/abstract/20133271890ca_ES
dc.relation.ispartofComunicació presentada al 3rd CIGR International Conference of Agricultural Engineering (CIGR-AgEng2012), Valencia, 8-12 Jul 2012ca_ES
dc.rights(c) International Commission of Agricultural and Biosystems Engineering (CIGR), 2012ca_ES
dc.subjectOff-roadca_ES
dc.subjectTractionca_ES
dc.subjectTransmissionca_ES
dc.subjectBogiesca_ES
dc.subjectHydrostaticca_ES
dc.titleActive bogies, chassis levelling and transmission efficiency for a vehicle operating in rough terrainca_ES
dc.typelectureca_ES
dc.identifier.idgrec018060
dc.type.versionacceptedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_ES


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