题目：VEP4-2.0T发动机进气歧管装配工艺设计目录1.进气歧管的结构及工作原理..........................................................................................11.1进气歧管简介........................................................................................................11.2进气歧管工作原理................................................................................................12.装配线工作要求..............................................................................................................22.1一般要求................................................................................................................22.2工作前要求............................................................................................................22.4工作后要求............................................................................................................23.VEP4-2.0T发动机进气歧管装配工艺...........................................................................33.1检查进气歧管密封圈............................................................................................33.2扫描进气歧管组件二维码....................................................................................43.3装配电子节气门至进气歧管................................................................................43.4拧紧电子节气门螺栓............................................................................................53.5装配进气歧管组件及6颗螺栓并预紧................................................................53.6装配进气压力温度传感器....................................................................................64.常见质量问题及控制......................................................................................................7参考文献...............................................................................................................................8VEP4-2.0T发动机进气歧管装配工艺设计1.进气歧管的结构及工作原理1.1进气歧管简介对于化油器式或节气门体汽油喷射式发动机，进气歧管指的是化油器或节气门体之后到气缸盖进气道之前的进气管路。它的功用是将空气、燃油混合气由化油器或节气门体分配到各缸进气道。[1]如图1-1所示图1-11.2进气歧管工作原理进气歧管是将由节气门导入的空气分配给每个气缸，与喷入的燃油雾化后参与引擎燃