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Six Sigma was developed by Motorola in the 1980s as an enhancement of their Total Quality Management (TQM) approach focusing on quality improvement. Companies such as General Electric (GE) developed the concept even further and extended the application of Six Sigma tools to their entire business, including the development of new products, with a focus on both financial gain and customer satisfaction. Six Sigma, however, also offers a rigorous, data-driven procedure for process and product improvement and for the development of new products and processes using proven methods and tools taken from the Quality Management and Quality Engineering toolbox. Integration into the existing engineering culture and the application of these tools and concepts to a typical application at a leading global exhaust system supplier are outlined in this paper. The procedure which is used for measuring the surface radiated noise is analyzed in detail by the principles of Six Sigma.

After having successfully implemented Lean in Tenneco's Clean Air division, Tenneco Europe decided to expand Lean to its other divisions - Ride Performance including Aftermarket in 2011. These divisions were able to fully benefit from the best practices developed over the last 10 years. The implementation was articulated around two major axes: the execution of complex projects related to processes including several functions and sites. This approach allowed us to reach a critical mass in a reasonable time within the different functions and sites; the execution of smaller projects focused on one specific function,e.g.: Engineering or Sales. This approach is complementary to the first one since it enhances the spread of the lean spirit within the organization. This paper focuses on Tenneco's Ride Performance division and is split into two parts.

During the 4 last years, Lean has been successfully implemented in one of the Tenneco’s Business Units: Ride Performance. This paper reflects on the results and more specifically on the third principle of Lean [1] “How to make flow” and on the fifth principle “To strive for perfection” obtained in the fields of “Product Development” related to Processes, Tools and People. Processes and Hard Tools. How to improve the flow in the engineering processes? It will be shown that In general standardized processes supported by some integrated tools and, more specifically Some workload leveling in testing, CAD Departments, Standardization in design processes, testing procedures and prototypes development processes and Standardization and availability of components and parts for prototype building are key enablers to enhance flow in the Product Development.