Electronic Control of Automobile Transmissions

Renault automobiles have used electronic controls for their automatic transmissions for many years. Most recently, these transmissions have been equipped with controls utilizing microprocessor based electronics and updated sensor assemblies. This paper describes this all new electronic controlled transmission system as produced by Renix Electronique and STA, both Renault affiliates in France. An explanation of the design and the interaction between the mechanical and the electronic systems is provided as well as the qualitative benefits derived.