Air control valve with acceleration mitigation function

The invention provides an air control valve with an accelerating and relieving function, which comprises a main valve body, a main air cylinder, an auxiliary air cylinder, an auxiliary air cylinder, an auxiliary air cylinder, an auxiliary air cylinder, an auxiliary air cylinder, an auxiliary air cylinder, an auxiliary air cylinder, an auxiliary air cylinder, an auxiliary air cylinder and an auxiliary air cylinder, and is characterized in that the main valve body is provided with a main valve upper cavity and a main valve lower cavity which are arranged at an interval; the release valve body is provided with a driving cavity and an air inflation cavity which are arranged at an interval, an air inlet of the air inflation cavity is communicated with the acceleration release air cylinder, and an air outlet of the air inflation cavity is communicated with a train pipe; the release valve element is movably arranged in the driving cavity, the release valve element divides the driving cavity into a train cavity and an auxiliary air cavity, the train cavity is communicated with the train pipe, the auxiliary air cavity is communicated with the main valve lower cavity, and the end of the release valve element is provided with a plugging piece extending into the inflation cavity; the plugging piece is provided with a communicating position for communicating the air outlet and the air inlet of the inflating cavity and a closing position for separating the air outlet and the air inlet of the inflating cavity. By means of the technical scheme, the problem that the train acceleration relieving effect is poor can be solved.