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Material Selection and Application for Contacting Based Encoders Submerged in Automatic Transmission Fluid
Keywords: thick film, sensor, transmission
Thick film based sensor technology has been used for many years in automotive applications. The technology provides a cost effective base that can withstand many of the harsh conditions found in automotive environments. One of the most difficult environments to survive is the transmission. This environment requires a design that is robust to vibrational stresses, mechanical shock, temperature cycling and chemical attack from transmission fluid. This paper will discuss the special needs encountered in the selection and implementation of conventional dielectric on steel thick film technology as applied to a contacting based encoder. The encoder functions as a PRNDL switch which is housed entirely within an automatic transmission.
Richard Cooper, Thick Film Engineering Manager
Wabash Technologies
Huntington, IN

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