Diesel engine air inlet flow measuring device

The utility model relates to the technical field of diesel engines, and discloses a diesel engine air inlet flow measuring device which comprises an air flow meter pipeline and a diesel engine air inlet pipe, the left end of the air flow meter pipeline is fixedly connected with an installation pipe, the right end of the air flow meter pipeline is fixedly connected with an air inlet pipe, and the side face of the installation pipe is fixedly connected with a high-temperature telescopic air pipe. An inductor connector is arranged on the surface of the air flow meter pipeline, a cable connector is inserted into the inductor connector, a cable is arranged on the front face of the cable connector, a mounting plate is fixedly connected to the surface of the air flow meter pipeline, an L-shaped plate and an arc-shaped lap joint plate are fixedly connected to the upper surface of the mounting plate, and a threaded hole is formed in the upper surface of the L-shaped plate. A lead screw is in threaded connection with t