Remanufacturing: Impacts of Sacrificial Cylinder Liners

[+] Author and Article Information
Malte Krill

Department of Mechanical and Industrial Engineering, University of Illinois, Urbana, IL 61801

Deborah L. Thurston

 University of Illinois, Urbana, IL 61801Thurston@uiuc.edu

J. Manuf. Sci. Eng 127(3), 687-697 (Aug 11, 2004) (11 pages) doi:10.1115/1.1961946 History: Received November 19, 2003; Revised August 11, 2004

Remanufacturing offers the potential for simultaneously recovering the economic value of manufactured components and improving the environment. Some design features make remanufacturing less expensive and/or increase the proportion of components that can be remanufactured. For example, sacrificial components can be used to protect key parts from wear. However, trade-offs are sometimes involved, and product designers need tools to support design for remanufacturing. This paper presents models for estimating the costs and environmental impacts of employing sacrificial components (cylinder liners) in engine blocks. These models are incorporated into a spreadsheet-based design decision tool. Three illustrative examples demonstrate that (1) remanufacturing lowers overall costs when two life cycles are considered, (2) sacrificial cylinder liners should be employed for small (2 L) engines, and their superiority increases with multiple remanufacturing cycles, and (3) for large engines (5.3 L) using cylinder liners is equally preferred to not using them, with respect to both overall cost and environmental impacts.

Copyright © 2005 by American Society of Mechanical Engineers
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Figure 1

Most valuable engine components (17)

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Figure 2

Costs with and without remanufacturing for a 1.7 engine block over two life cycles

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Figure 3

Costs with and without cylinder liners for a 2 liter engine block over two life cycles

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Figure 4

Costs with and without cylinder liners (A and B, respectively) for increasing life cycles (LC)

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Figure 5

Sensitivity analysis of overall utility over a range of scaling factor values for cost (k1) and environment (k2)




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