为了使某型号工程机械发动机的空气滤清器,在沙漠地区作业时能够起到良好的过滤作用,我们在常规的空气滤清器上增设了1个初级空气滤清器,使其成为沙漠型空气滤清器。改装后的空气滤清器,既能满足发动机的进气需要,又能过滤沙尘,且成本很低。该初级空气滤清器安装在发动机原空气滤清器的前端,如图1所示。启动发动机后,空气从初级空气滤清器的防雨帽进入,空气中的粗颗粒沙尘撞击防雨 In order to make a certain type of construction machinery engine air filter, work in the desert area can play a good filter, we added a conventional air filter on the primary air filter, making it desert air filter. Modified air filter, both to meet the needs of the engine intake, but also filter dust, and the cost is low. The primary air cleaner is mounted on the front of the engine’s raw air cleaner, as shown in Figure 1. Start the engine, the air from the primary air filter into the rain hat, the dust in the air hit the dust particles