Introduction 2.The Type of Automobile and Tractor 2.1 The type of automobile Automobile can be divided by different classification methods. 2.1.1 Classification by use transport automobile and special automobile are divided into two categories. 2.1.1.1 Transport automobile (1)Car swept volume below 1L-Minicar,swept volume 1.0-1.6L-General Car;swept volume 1.6-2.5L-Intermediate Car;swept volume 2.5-4L-Middle- and-High Car;swept volume over 4L-Advanced Car. (2)Coach length 3.5m-Microbus length 3.5-7m-Light Bus length 7- 10m-Middle Bus length 10-12m-Motorbus length over 12m or double deck coach length 10-12m-Oversize Coach. (3)Van gross weight less than 1.8t-Minivan gross weight 1.8-6t-Light Van gross weight 6-14t-Middle Van gross weight over 14t -Large Van. (4)Drag automobile:exclusively or mainly used for dragging a car trailer. 械电子工程学度 Automobile and Tractor Northwest A&F University Automobile and Tractor Northwest A&F University Introduction 2. The Type of Automobile and Tractor 2.1 The type of automobile Automobile can be divided by different classification methods. 2.1.1 Classification by use : transport automobile and special automobile are divided into two categories. 2.1.1.1 Transport automobile (1) Car : swept volume below 1L—Minicar; swept volume 1.0－1.6L—General Car; swept volume 1.6－2.5L —Intermediate Car; swept volume 2.5－4L—Middle￾and-High Car; swept volume over 4L —Advanced Car. (2) Coach : length 3.5m－ Microbus； length 3.5-7m－ Light Bus； length 7- 10m－Middle Bus；length 10-12m－Motorbus；length over 12m or double deck coach length 10-12m－Oversize Coach． (3) Van : gross weight less than 1.8t－Minivan； gross weight 1.8-6t－Light Van； gross weight 6-14t－Middle Van；gross weight over 14t －Large Van． (4) Drag automobile : exclusively or mainly used for dragging a car trailer