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一、牵引特性分析的必要性根据多年内燃牵引车研发和销售的经验,在以下情况往往需要进行牵引特性分析。(1)设计需要。内燃牵引车新产品方案设计时,首先需要根据变、发匹配曲线对传动系统匹配进行分析计算,这是保证新产品的牵引力和速度满足设计输入所必须要做的工作。以QYCD20-J牵引车为例,传动系统匹配计算方法详见表1～表5。但设计新产品的最终目的是满足用户需要并最终形成商品,所以除对传动系统匹配计算外,还需
First, the need for analysis of traction characteristics According to many years of experience in research and development and sales of fuel-tractor, tractor characteristics often need to be analyzed in the following situations. (1) design needs. When designing a new product for a diesel tractor, we first need to analyze and calculate the transmission system matching according to the change curve and the matching curve. This is the work that must be done to ensure that the new product’s traction and speed meet the design input. Take QYCD20-J tractor as an example, see Table 1 to Table 5 for details of the drive system matching calculation method. However, the ultimate goal of designing new products is to meet the needs of users and eventually form a product, so in addition to matching the drive system, the need