Development of Injector for the Direct Injection Homogeneous Market using Design for Six Sigma

  • Rivera E
  • Mastro N
  • Zizelman J
 et al. 
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Abstract

Gasoline direct injection (GDi) engines have become popular due to their inherent potential for reduction of exhaust emissions and fuel consumption to meet increasingly stringent environmental standards. These engines require high-pressure fuel injection in order to improve the fuel atomization process and accelerate mixture preparation. The injector is a critical part of this system. The injector technology needed to satisfy the market demands is constantly changing. This paper focuses on how the Design for Six Sigma innovation methodology was successfully used to develop a new injector for the homogeneous direct injection market. The project begins with the work to understand the market needs and market drivers then decomposes those needs into functional requirements and concepts. The concepts are evaluated and the best concept is selected. The project ends with the optimization of the critical functions including fuel flow control and fuel spray control. Copyright © 2010 SAE International.

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Authors

  • Edwin A. Rivera

  • Noreen Mastro

  • James Zizelman

  • John Kirwan

  • Robert Ooyama

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