Investigation of creep corrosion resistance improvement on a new autonomous brake booster developed by Bosch named iBooster.
Tutor / director / evaluatorArmelín Diggroc, Elaine Aparecida
Document typeBachelor thesis
Rights accessRestricted access - author's decision
Abstract corregit We are livingin an era where new technologies allowall sectors, specially the automotive sector, invest onsecurityimprovements fortheir clients. In this spirit, Bosch developed the autonomous brake system, which detects when a collision isabout to happen and brakes the car without any previous driverinput. This new braking system,callediBooster, is already on the market and its growth expectations are very high. Today, the engineering Bosch team is already developing the second iBooster generation.However, this new iBooster is not robust enough to protect the inside of the braking systemagainst corrosion. Thus, the aim of this project is to study a solution to this problem, based on a new design of one of the seals ofthe iBooster, whose only function is to delay corrosion entrance into the system. To do so, different designsarestudied using FEA (Finite Element Analysis) simulationsin order to obtainthe most adequate design. The solution consists in a T-shape design of the seal, insteadof the typical O-Ring. The new design, with the same volume and material as the current one, is able to reach higher sealing pressures and, therefore, make the entrance of corrosive agentsmore difficult. To verify its efficiency, the new design has been tested by doing the corrosion tests specified on the Bosch’s norms. Results proof that the new T-shape design is not providing any remarkable improvementregarding seal’s robustness. Therefore, furtheractionswillbe taken in order to increase the delay of corrosive agents entrance into the iBoosterbraking system, because the new sealdesignby itself is not able to do so.
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