Idle system
When the internal combustion engine itself is running but does not do external work, it is called idling operation. At this time, the throttle valve is nearly closed, and the vacuum at the throat cannot suck out and atomize the fuel. Therefore, there is an idle nozzle behind the throttle valve, and the vacuum here is used to suck out the fuel. There are idle oil measuring holes and idle air measuring holes in the idle oil circuit to control the amount of oil and make the fuel foam. The idle speed can be adjusted with the idle screw. In order to ensure the smooth transition from the idle speed system to the main oil system work, there is also a transition nozzle on the idle speed oil road between the idle speed nozzle and the throat.