一、引言众所周知,当节气门掠过过渡喷口时,怠速油道里的真空度就会大大提高,使怠速油路的供油量显著增加,引起混合气过浓,造成油耗增大和排气中有害成分的大量增加。过渡阶段混合气调节器就是针对这一情况设计的,它可自动调节怠速油道的真空度,控制怠速油路的供油量,防止混合气过浓,从而实现节油和减少排气污染的目的。同时,由于它结构简单、成本低廉、安装方便,对化油器和汽车均无特殊要求,故宜于推广。二、一般化油器的怠速系统图1为一般化油器怠速系统的简图。在怠速工况下,由浮子室经怠速量孔吸入的汽油与经怠速空气量孔吸入的空气在怠速 I. INTRODUCTION It is well-known that when the throttle passes through the transition spout, the vacuum in the idle oil passage will be greatly increased, which will significantly increase the oil supply of the idle oil passage, causing the mixture to be too thick, resulting in increased fuel consumption and harmful exhaust gas A substantial increase in composition. In the transition phase, the air conditioner is designed for this situation. It automatically adjusts the degree of vacuum of the idle oil passage, controls the amount of oil supplied to the idle oil passage, and prevents the mixture from becoming too rich, thereby saving fuel and reducing exhaust pollution purpose. At the same time, due to its simple structure, low cost, easy installation, no special requirements for carburetors and cars, it is appropriate to promote. Second, the general carburetor idle system Figure 1 for the general carburetor idle system diagram. Under idling condition, the gas sucked in by the float chamber through the idle orifice and the air sucked in through the idle air orifice are idling