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Driven by the will to gain further know-how and experience in the field of electric vehicles, and to demonstrate IDIADA's engineering capability, IDIADA decided to convert an existing light commercial vehicle, a Nissan Cabstar, into a fully electric vehicle. The brake department of Applus+ IDIADA investigated and developed different concepts of Regenerative Braking Systems (RBS) for this Electric Vehicle project, all of which based on the existing braking system, but with extended sensors. Thanks to their developments and technologies, Applus+ IDIADA succeeded in demonstrating the potential of electric vehicles. This presentation, with focus on the development and integration of the concept, aims at giving a brief overview on the results achieved so far.

Brake NVH is nowadays a first priority in braking system development for OEMs and Tier1 suppliers. Cheap and reliable solutions are constantly researched for identification and analysis of brake NVH phenomena. An innovative procedure for brake NVH durability testing has been developed by Applus+ IDIADA in order to investigate noise events during braking. An acquisition system (dbBrake) and software (dbSoft) have been developed with the aim of analyzing high and low frequency noise during braking and carrying out an automatic analysis of occurrence, frequency and SPL (Sound Pressure Level) of brake noise. Noise can be triggered using different parameters. Brake line pressure, temperature and speed conditions are also automatically recorded and analyzed when noise occurs In order to corroborate the objective results logged by dbBrake system, the correlation with subjective evaluation from expert drivers is also automatically carried out.