论文部分内容阅读
除了内燃机和车桥系统外,道路车辆的传动系统主要由变速器所决定。目前城市公共汽车中主要采用动力换档的自动变速器,特别是因为它们具有舒适性高和操纵便捷的特点。今天变速器系统的新挑战源自于内燃机的改进,特别是受制于排放法规使得内燃机提高转矩和冷却温度。另一方面,车辆的全寿命成本正变得更加重要,并由此带来技术方面的挑战,例如更高的可靠性和更佳的燃油经济性等。将诸如成本、舒适性最优等各种要求合并,形成了相当复杂的需求内容。而且这些需求对车辆制造商和诸如操作人员的最终用户有所不同。因此ZF公司开发新一代动力换档变速器,将长期目标与诸如更广的车辆应用场合、降低全寿命成本、简化使用条件等用户需求相结合。采用QFD(质量功能展开)方法分析后发现,由液力变矩器、行星齿轮机构和初级缓速器组成的动力换档变速器是满足各种不同需求的最佳方案。我们开发的新变速器在设计和制造的各个细节方面均采用了特殊和全新的解决方案。将最新的开发工具和方法应用与概念定义中。最终形成的动力换档变速器是一个6档行星齿轮变速器、带锁止离合器的液力变矩器,并可选装扭转减振器。新的冷却系统有两个热交换器,以提高系统的可靠性和改善城市公共汽车初级缓速器的制动转矩以适应更重的车辆、较高平均速度、长时间性能和舒适性等方面的要求。新型ECU直接安装在变速器上,其电气安装界面做到最小。其结论是,新型动力换档变速器的优势非常突出,因为它们体现了当代和今后动力传动系统应有的高性能,以及更佳的全寿命成本和优越的舒适性;并且在安全性和环保方面都相当出色。最后强调一下,我们将其取名为EcoLife,象征着更高的经济性和生态效益以及寿命。
In addition to the internal combustion engine and axle system, the transmission system of the road vehicle is mainly determined by the transmission. At present, the automatic transmission in the city bus mainly uses power shift, especially because they have the characteristics of high comfort and convenient operation. Today’s new challenges in transmission systems stem from the improvement of internal combustion engines and, in particular, to emissions regulations that allow internal combustion engines to increase torque and cooling temperatures. On the other hand, the full life cost of a vehicle is becoming more important and brings with it technical challenges such as higher reliability and better fuel economy. The combination of various requirements, such as cost and comfort, created a rather complex requirement. And these requirements are different for vehicle manufacturers and for end-users such as operators. ZF therefore develops a new generation of power-shift transmissions that combine long-term goals with user needs such as broader vehicle applications, lower life-cycle costs and simplified service conditions. Analysis using the QFD (Quality Function Deployment) method shows that a power-shift transmission consisting of a torque converter, a planetary gear mechanism and a primary retarder is the best solution to meet a variety of needs. The new transmission we developed uses special and completely new solutions in every detail of design and manufacture. Apply the latest development tools and methodologies and concept definitions. The resulting power shift transmission is a 6-speed planetary gearbox with lock-up clutch torque converter, and optional torsion damper. The new cooling system has two heat exchangers to improve system reliability and improve the braking torque of the city bus primary retarder to accommodate heavier vehicles, higher average speeds, longer performance and comfort, etc. Aspects of the requirements. The new ECU is mounted directly on the transmission with minimal electrical interface. The conclusion is that the advantages of the new powershift transmission are outstanding as they reflect the high performance that modern and future powertrain deserves, as well as better life-cycle costs and superior comfort; and in terms of safety and environmental aspects Very good. Finally, to emphasize, we will call it EcoLife, a symbol of higher economic and ecological benefits and longevity.