Engine gas intake humidification and dehumidification integrated test device

The utility model discloses an engine gas intake humidification and dehumidification integrated test device comprising an engine gas inlet, a gas intake channel and a fan. A gas intake filtering muffler and an outlet muffler are arranged in the front and rear of the fan respectively. The device is characterized in that a device body is arranged in the gas intake channel between the engine gas inlet and the fan; the device body has two functions of humidifying and controlling the gas intake dew point temperature, a water spraying device comprises a chilled water inlet, a chilled water outlet, a plate-type heat exchanger, a temperature adjusting valve, an electric heater, a water pump and a water tank in connected manner and forms a device for humidifying and controlling the gas intake dew point temperature with a gas temperature sensor, a liquid level gauge is arranged outside the water tank and is used for controlling the water quantity in the water tank, and the outlet of the fan is connected to the water ta