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An Optimization Study of Manufacturing Variation Effects on Diesel Injector Design with Emphasis on Emissions
- Source :
- SAE Technical Paper Series.
- Publication Year :
- 2004
- Publisher :
- SAE International, 2004.
-
Abstract
- This paper investigates the effects of manufacturing variations in fuel injectors on the engine performance with emphasis on emissions. The variations are taken into consideration within a Reliability-Based Design Optimization (RBDO) framework. A reduced version of Multi-Zone Diesel engine Simulation (MZDS), MZDS-lite, is used to enable the optimization study. The numerical noise of MZDS-lite prohibits the use of gradient-based optimization methods. Therefore, surrogate models are developed to filter out the noise and to reduce computational cost. Three multi-objective optimization problems are formulated, solved and compared: deterministic optimization using MZDS-lite, deterministic optimization using surrogate models and RBDO using surrogate models. The obtained results confirm that manufacturing variation effects must be taken into account in the early product development stages.
Details
- ISSN :
- 01487191
- Database :
- OpenAIRE
- Journal :
- SAE Technical Paper Series
- Accession number :
- edsair.doi...........240edece7eba78180a9ed3de790d8058
- Full Text :
- https://doi.org/10.4271/2004-01-1560