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This article will show the relationship between visual quality and engineering technical criteria's, based on the perceptual quality about vehicles style. The meaning of this relation is demonstrated by engineering standards and style parameters. They are referenced to the people reaction to the “new” based on comparison and sensitivity. As the Dimensional Engineering coordinates the engineering standards related to the style parameters, the scope of this article is to show a case that example style characteristics and vehicles project. This relationship is a result of components surfaces and cut lines, classified in gaps, offsets, concave surfaces, convex surfaces, alignment and proportions.

This article is the sintezis of vehicle development process, starting from its characteristics and included in a competitive market, and shows the dimensional optimization process application and validation using the GD&T by ASME 14.5 M. INDEX KEY WORDS INTRODUTION TECHNICAL GROUNDING STUDY EXAMPLE CHOICE PROCESS STUDY EXAMPLE APPLYING AND VALIDATING GD&T BY ASME 14.5M STANDARD STUDY EXAMPLE RESULTS FINAL CONSIDERATION APPENDIX BIBLIOGRAPHY

The objective of this article is to show procedure of dimensional problems resolution by correlation of products measurement results the use of a mathematical model for variance analysis demonstrated in a case. The base of this work is in the dimensional problem evaluation in the subdivision of components, potentials of improvement, shunting line X variation, mathematical definition, adjustments of product and the process. The optimization of products and processes is determined by the sequence of activities for problems solution, aligned to the product and process concept development with the possibility to get all the necessary information for continuous improvement. The product and process activities and optimization standards are determined by the chance to solve problems and being actively directed toward the continuous improvement.