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Development of Sintered Bearing Material with Higher Corrosion Resistance for Fuel Pumps
Technical Paper
2007-01-0415
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In recent years, due to a growing demand for improvement in the performance and reliability of automotive fuel pumps and the advancement of globalization, automotive fuel pumps are being used with inferior gasolines that include more sulfur, organic acids or compounds, compared to gasolines used in general regions. Conventionally, bearings in these fuel pumps have mainly been made of sintered bronze alloy. With this bronze alloy, however, it is difficult to achieve a significant improvement in the tribology characteristics of bearings, in order to meet the demands for performance improvement, etc., and corrosion is severe in inferior gasolines that contain highly-concentrated organic acids or sulfur and the corrosion products that accompany them. Therefore, in order to obtain fine tribology characteristics and superior corrosion resistance in gasolines with highly-concentrated organic acids and sulfur, various copper-based alloys were studied using the powder metallurgy process. As a result, graphite dispersed Cu-Ni sintered alloys having a high tin alloy layer showed superior corrosion resistance and fine tribology characteristics when lubricated with a gasoline containing highly-concentrated organic acids and sulfur.
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Authors
- Takahiro Nozu - DENSO Corporation
- Youichi Murakami - DENSO Corporation
- Naruhiko Inayoshi - DENSO Corporation
- Kiyotoshi Ooi - DENSO Corporation
- Hideki Narisako - DENSO Corporation
- Teruo Shimizu - Mitsubishi Material PMG Co., Ltd.
- Tuneo Maruyama - Mitsubishi Material PMG Co., Ltd.
- Toshiro Harakawa - Mitsubishi Material PMG Co., Ltd.
Topic
Citation
Nozu, T., Murakami, Y., Inayoshi, N., Ooi, K. et al., "Development of Sintered Bearing Material with Higher Corrosion Resistance for Fuel Pumps," SAE Technical Paper 2007-01-0415, 2007, https://doi.org/10.4271/2007-01-0415.Also In
Body Engineering and Design, Glass Applications, Corrosion Prevention and Design Tools
Number: SP-2069; Published: 2007-04-16
Number: SP-2069; Published: 2007-04-16
References
- Kammlott, G.W. Franey, J.P. Graedel, T.E. 1984 Atmospheric Sulfuration of Copper-Alloys Journal of the Electrochemical Society 131 3 505 515
- 1998 Japan Copper and Brass Association: Basis and Engineering Technology of Copper and Copper Alloys 285
- Shimura Yukio 1998 Machine Elements Application Manual-Sliding Bearing