Measurement device for air content in coolant liquid of engine

The utility model discloses a measurement device for air content in coolant liquid of engine, measuring device includes: the outlet pipe, its one end feeds through with the one end of the water cavity of engine, and the middle part of outlet pipe is equipped with first tiny loop interface, the inlet tube, its one end feeds through with the other end of the water cavity of engine, and the middle part of inlet tube is equipped with second tiny loop interface, radiator, its both ends communicate with the other end of outlet pipe and the other end of inlet tube respectively, little circulating pipe, its both ends communicate with first tiny loop interface and second tiny loop interface respectively, the temperature saver, it sets up on first tiny loop interface, the lid is observed to the transparent, and it fixes the highest point at the outlet pipe, and is located between the delivery port and first tiny loop interface of engine, is equipped with limit value warning line and many scale marks on the lateral surface of observation lid. This measuring device simple structure, low in manufacturing cost is honest and clean, and convenient to use, and the accuracy reads the volume of the air in the coolant liquid, convenient calculation fast.