Compacted Graphite Iron-A Material Solution for Modern Diesel Engine Cylinder Blocks and Heads
The demands for improved fuel economy, performance and emissions continue to pose challenges for engine designers and the materials they choose. This is particularly true in the rapidly growing commercial vehicle sector in China As road infrastructure improves, and as the need for goods transportation and personal mobility increases, the government and fleet owners have demanded state-of-the-art heavy - duty diesel engines that can carry heavier payloads while providing improved fuel efficiency and emissions. Based on the European experience, the primary path to achieving improved engine performance is to increase the Peak Firing Pressure(P max) in the combustion chamber. In the European commercial vehicle sector, P max has increased from approximately 180 bar in 1999 to 220 - 240 bar in 2010. The resulting increase in thermal and mechanical loading have required a change from conventional grey cast iron to Compacted Graphite Iron (CGI) in order to satisfy durability requirements without increasing the size or the weight of the engines. With at least 75％ higher tensile strength,45％ higher stiffness and approximately double the fatigue strength of conventional grey cast iron, CGI satisfies durability requirements and also provides the dimensional stability required to meet emissions legislation throughout the life of the engine. In response to EURO4 and 5 legislation, several new heavy - duty CGI engines have already been launched in Europe. As the same EURO legislation standards are introduced in China, the same Peak Firing Pressure solutions and durability challenges will undoubtedly be faced,and the same solutions will undoubtedly be implemented. As a result, it is forecast that the Chinese foundry industry will experience a significant up-turn in CGI product development and series production over the next five years. Of course, this CGI activity and production experience will also lead toward new opportunities for the export market.
compacted graphite iron CGI heavy duty diesel engine design
Steve Dawson Frank Zhang
SinterCast AB:Box 10203 , Se-l 00 55 Stockholm, Sweden SinterCast AB Shanghai Representative Office, Suite 2621 , Hong Kong Plaza,283 Huai Hai Road,Shangha
国际会议
69th World Foundry Congress(第69届世界铸造会议 WFC 2010)
杭州
英文
359-364
2010-10-16（万方平台首次上网日期，不代表论文的发表时间）