Byte av kontaktdonsgränssnitt för Scania bromssystem
This master thesis was carried out at Scania in Södertälje, Sweden. It investigates the possibility of changing a connector interface that is used when there is a need for splicing the wheel speed sensor and thereby determine the consequences.The problems that exist with the current connector interface occur during assembly, as more time is required to complete a connection in a reliable manner. A complete connection requires joining the male and female connector, insert the connection into a protective retainer and then strap a cable tie on each end of the retainer. This process makes it more time consuming and it requires 20-30 seconds to complete the connection. Solving this problem would save time and enable easier assembly, therefore resulting in economical benefits.This thesis was accomplished through discussions with different sections at Scania, studying available documentations, observations during assembly, writing a requirement specification and contacting suppliers.The aforementioned methods resulted in four connector suggestions, the DT and DTMH connector from Deutsch, MCON connector from TE connectivity and MLK connector from Kostal, each of them compliant with the set demands of the surrounding environment. Finally, the MLK connector from Kostal was decided as the most suitable as it was deemed appropriate by production who found that it has the best feedback. Also, economic wise it saves over 1 000 000 SEK (for 150 000 connections) annually.The suggested connectors need to go through a Scania testing document, TB 1787 before being approved for use. The change of connector affects other components which need to be taken into consideration. The affected components have been mapped out, as well as the sensor variations for trucks, with and without EBS.The conclusion which can be drawn is that it would be beneficial to change the connector interface, as it would save time, money and simplify the assembly process.