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Electromagnetic compatibility and interference have become a critical factor in vehicle design specially considering the electronic scale of integration used in the vehicle to control and monitor vital functions as ignition and fuel injection, electronic suspension, ABS/RABS and others. Of course, some care procedures and tests can guarantees the vehicle electronic system integrity and security as well guarantee the driver and passengers safety too. This paper discusses the problem of electromagnetic interference in vehicle system and describes some techniques that may be used to measure and control this EMI.

The analog electronic simulators application in the automotive industry has shown as being an economic way for cost reduction and development time. With good models, the electro nic simulation cuts down the prototype routines and tests, increasing significantly the quality of the final product.