Chapter 7 Engine cooling system Section 2 Composition and working principle 2.Air cooling system components and working principle Components Fan Fan cowl Cooling fin Cylinder cowl Manifold Figure 7.5 Air cooling system schematic diagram 1.fan 2.fan cowl 3.cooling fin 4.cylinder cowl 5.spreader plate 机被电子工程学度 Automobile and Tractor Northwest A&F UniversityAutomobile and Tractor Northwest A&F University Chapter 7 Engine cooling system 2. Air cooling system components and working principle Components ： Fan Fan cowl Cooling fin Cylinder cowl Manifold Figure 7.5 Air cooling system schematic diagram 1. fan 2. fan cowl 3. cooling fin 4. cylinder cowl 5. spreader plate Section 2 Composition and working principle