The redesign of 490-modified diesel engine and the design of the Piston Abstract:With the development of the market economy, enterprises increasingly fierce competition, enterprises must request to shorten the product development cycle, reduce development costs, improve product quality, to achieve the rapid development of new products. As diesel engines generally vibration, noise, sound, lower emissions, are not suitable for current economic development and customer needs. In order to better Tendency to meet the requirements of our customers, we will make full use of all of the current conditions! Design power, low fuel consumption, fuel oil province, Pai Put away the advantages of the 490 diesel engine to the game in modern market economy, there are more competitive, increase market share Rate. Customer demand at this time generally a safe, fuel-efficient, environmental protection, the appearance of new, cost-effective good diesel engine In this paper, the 490 diesel engine had a overall design over again and parts of its typical piston design in detail. After comparative analysis of many programs, I select the appropriate program, to determine their size and structure. Key word: 490diesel engine, Piston design
以上为本篇毕业论文范文 学位论文 490型柴油机总体方案设计及活塞设计的介绍部分。