Engine secondary air inlet automatic regulator

The invention relates to an automatic device with second gas-inlet engine. Its character is that the device is installed in the inlet manifold between engine branch air inlet and braking servo drum, it includes a covered crust on one end, in the shell filtering network, sound proof, filter, stopper and a container with steel balls and springs are connected from top to the bottom, the ladder tooth tube connection and hexagon is connected with the shell after they are covered by a rubber spacer, the ladder tooth tube connection are connected with the inlet manifold; the outstanding progress and remarkable efficiency of this invention is fuel-efficient, fast acceleration and clean tail gas.