汽车的常用转向系统的性能分析.doc

毕 业 论 文 （设计） 论文题目：汽车的常用转向系统的性能分析 摘 要 汽车转向系统是用来改变和恢复汽车行驶方向保持汽车直线行驶的机构，对转向轮的正常运转和汽车的安全行驶影响很大。汽车转向系一旦有问题，很用以造成事故。因此汽车转向系的技术状况对与保证汽车行驶安全、减轻驾驶劳动强度、提高运输效率、延长车辆使用寿命有着十分重要的作用。 在使用中，由于汽车转向系统工作条件恶劣，转速与负荷经常变化，长期弯曲、扭矩剪切和道路不平引起的冲击载荷同时受到各种因素的影响，其零部件必然会产生不同程度的弯曲、扭曲变形和绣缺裂纹断裂损失，从而影响汽车的操纵轻便性、经济性和安全性。为使汽车正常行驶必须采取经常性的检修、维护措施，防止不应有的损坏及时查明故障隐患并予以消除，使之保持完好的技术状况。 熟练掌握汽车转向系统的结构原理、使用维护和故障诊断及汽车诊断仪的熟练使用等技术，这对于我们从事汽车行业的人员至关重要。 关键词：动力转向，汽车诊断仪（四轮定位仪），故障诊断 Abstract Automotive steering system is used to change and restore car driving direction to keep the car run straight for the agency, the normal operation of turning wheels safe driving and the cars influence. Automotive steering systems once have problems, very used to cause an accident. So car steering system technical condition with guarantee of safety and reduce vehicle driving labor strength, improve transport efficiency and prolong service life vehicles plays a very important role. In use, because automotive steering system working conditions, speed and load often changes, long-term bending, torque shear and road uneven caused by various factors impacting loads and the influence of its components, inevitable meeting produces different degree of bending, distortion and embroider lack of crack fault, which affects car loss to manipulate portability, economy and security. To make cars moving must take regular maintenance；maintenance measures to prevent undue damage shall find fault hidden danger in time and to maintain complete elimination of technical status. Master automobile steering system structure principle, maintenance and fault diagnosis and car skillfully use of diagnostic instrument technology, such as the auto industry for we are engaged in the personnel is very important. Keywords: power steering, car echocardiography (four-wheel), fault diagnosis. 目 录 1 引言 2类型