Detection System of Fuel Spray Nozzle Based on Machine Vision

Fuel spray nozzle is an important part of automobile engine. Its performance heavily affects engine performance and engine power. Therefore, the study of fuel spray nozzle detection system and detection method has direct significance for improving engine performance. This paper developes a device to test spray form from fuel spray nozzle. Firstly, an externally-triggered industrial camera is used to collect the spray image of the fuel spray nozzle, combined with OpenCV image processing. Then, the spray form parameters of the fuel spray nozzle, including the spray angle, deflection angle and spray distance, are calculated. Finally, the quality of the spray can be evaluated by the obtained Euclidean distances. Experiments have proved that the system can complete the detection of fuel injectors.