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Design Concept and Manufacturing Method of a Lightweight Deep Skirt Cylinder Block
Technical Paper
2012-01-0406
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
An engine cylinder block is generally considered to be the heaviest part within a complete engine. In lowering the fuel consumption and CO2 discharge to the environment, efforts have been made around the world to reduce the weight of cylinder blocks. In general, the efforts are mostly focused on material upgrade from either cast iron to aluminum or from aluminum to magnesium. Although the material upgrade approach is effective in lowering the part weight, it is often accompanied by undesirable cost increase and manufacturing complexity. In moving forward, a new cylinder block concept is proposed that focuses more on material removal rather than material upgrade. The material removal approach is focused more on the high metal concentration areas like the bulkhead, skirt and housing for water pump and thermostat. To ensure that the material removal approach is effective and suitable for mass production, a uniquely designed crankcase inner sand core is applied. In addition, a radical crankcase skirt design is used to achieve small overall size to significantly reduce the metal volume while at the same time increasing the skirt's rigidity and strength. In ensuring that the cylinder block is integrated well with other parts of the engine, other parts like the design of crankshaft, bearing beam, thermostat housing and auxiliaries are also optimized to match the enhancements made to the cylinder block. In studying the concept's effectiveness in reducing the part weight, a cast iron 1.6 liter cylinder block and the related components are designed and modeled in Catia V5. The 3D models are later used for weight comparison with an existing 1.6 liter cast iron cylinder block currently in production.
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Osman, A., "Design Concept and Manufacturing Method of a Lightweight Deep Skirt Cylinder Block," SAE Technical Paper 2012-01-0406, 2012, https://doi.org/10.4271/2012-01-0406.Also In
References
- Beste, F. Schoffmann, W. Marquard, R. “Lightweight Design∼A Challenge for Modern Passenger Car Engines,” SAE Technical Paper 2000-05-0051 2000
- Okamura, T. Sato, T. Kitazawa, S. Nishidate, K. “Thin Wall and Lightweight Cylinder Block Production Technology,” SAE Technical Paper 2000-05-0067 2000
- Krebs, R. Szengel, R. Middendorf, H. Fliess, M. Laumann, A. Voeltz, S. “The New Dual-Charged FSI Petrol Engine by Volkswagen, Part 1: Design” MTZ 11 2005 66
- Arndt, R. Kusebauch, K. Rosch, R. Stenzel, M. “Aluminium Cranckase of the 1.6 L and 1.8 1 Four-Cylinder Audi Engine” MTZ
- Bosch Automotive Handbook 7 th Robert Bosch GMBH 2007 Plochingen
- Dieterle, U. Blum, D. Luhr, H. Wagner, T. Schwaderlapp, M. “Cast Iron Cylinder Block: Lightweight, Quiet and Efficient” MTZ 12 1997
- http://www.indexmundi.com/commodities/?commodity=aluminum
- http://www.indexmundi.com/commodities/?commodity=iron-ore
- Osman, A. “Oil Scrubber for Engine” United Kingdom Patent Office, GB 2402437
- Dawson, S. “Compacted graphite iron - A material solution for modern diesel engine cylinder blocks and heads” Overseas Foundry www.foundryworld.com/uploadfile/200912130928203.pdf August 2009
- Dawson, S. Indra, F. “Compacted Graphite Iron - A New Material for Highly Stressed Cylinder Blocks and Cylinder Heads” Internationales Wiener Motorensymposium 2007
- Tholl, M. Magata, A. Dawson, S. “Practical Experience with Passenger Car Engine Blocks Produced in High Quality Compacted Graphite Iron,” SAE Technical Paper 960297 1996 10.4271/960297
- Rao, P.N. Manufacturing Technology; Foundry, Forming and Welding 1 3 rd New Delhi Tata McGraw-Hill Publishing Company Limited 128 2009
- Osman, A. “Feasibility Study of a Novel Combustion Cycle Involving Oxygen and Water,” SAE Technical Paper 2009-01-2808 2009 10.4271/2009-01-2808
- Osman, A. “Oil Pan Structure for an Engine” United Kingdom Patent Office, GB 2402436