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今天,减轻连杆重量对满足现代内燃机的各项要求是至关重要的。为了降低产品成本、改善NVH特性和提高轴瓦的可靠性,现代汽车公司(HMC)已采用粉末冶金锻造连杆取代传统的热锻连杆。通过提高质量和降低成本的优化设计,开发了轻型连杆。值得注意的是,粉末冶金锻造连杆的质量比传统的热锻连杆的质量小17.7%,而且,连杆大头质量比传统型连杆大头的质量小22.5%。采用轻型连杆可减小曲轴系的质量,从而也减小了主要运动件的质量。由于减小了质量,轴瓦可靠性和NVH特性均可提高。HMC在一台新型V6发动机上进行了疲劳、刚度和装机耐久性等对比试验。
Today, it is crucial to reduce the weight of connecting rods to meet the requirements of modern internal combustion engines. To reduce product costs, improve NVH characteristics and improve bearing reliability, Hyundai Motor Company (HMC) has used powder metallurgical forging links to replace traditional hot forged links. Lightweight connecting rod has been developed with optimized design for quality and cost reduction. It is noteworthy that the quality of powder metallurgy forged links is 17.7% less than the quality of conventional hot forged links, and the mass of the connecting rod is 22.5% less than that of the traditional connecting rod. The use of lightweight connecting rods reduces the mass of the crankshaft system and therefore also the mass of the main moving parts. Due to the reduced mass, the bearing reliability and NVH characteristics can be improved. HMC conducted a comparative test of fatigue, stiffness and installed durability on a new V6 engine.