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Design and manufacture of high performance hollow engine valves by Additive Layer Manufacturing
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Cooper, David E., Thornby, John Albert, Blundell, N., Henrys, R., Williams, M. A. and Gibbons, Gregory John (2015) Design and manufacture of high performance hollow engine valves by Additive Layer Manufacturing. Materials & Design, Volume 69 . pp. 44-55. doi:10.1016/j.matdes.2014.11.017 ISSN 0264-1275.
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Official URL: http://dx.doi.org/10.1016/j.matdes.2014.11.017
Abstract
Additive Layer Manufacture (ALM) of metallic components provides significant opportunities for the reduction of component weight, in order to realise improvements in vehicle fuel efficiency or performance. This paper examines the potential benefits of ALM with regard to reducing the weight of Internal Combustion Engine inlet or exhaust valves. A case study component is presented, for which an improved ALM design has been created, manufactured and evaluated. Micro-Computed Tomography (μ-CT) scanning was utilised to reverse engineer an original component, and to assess the ALM component’s internal geometry and material integrity. The case study valve was re-designed using Finite Element Analysis (FEA) to select a light weighted design which provides a conservative 9.4 g, (20%) weight saving on the Original Equipment Manufacturer (OEM) component. An engine test of over 175,000 cycles at between 2000 and 9500 rpm was conducted, after which μ-CT scanning confirmed no evidence of internal cracking, failure or significant deformation.
Item Type: | Journal Article | ||||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||||
Journal or Publication Title: | Materials & Design | ||||||||||
Publisher: | Elsevier Ltd | ||||||||||
ISSN: | 0264-1275 | ||||||||||
Official Date: | 15 March 2015 | ||||||||||
Dates: |
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Volume: | Volume 69 | ||||||||||
Page Range: | pp. 44-55 | ||||||||||
DOI: | 10.1016/j.matdes.2014.11.017 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Restricted or Subscription Access |
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