Pulse type injection valve testing method, device and system

The invention discloses a pulse type injection valve testing method, device and system, and relates to the field of engines, and the method comprises the steps: firstly, under the condition that an engine is kept in a starter starting state, a plurality of preset pulse type injection valves to be tested are controlled to carry out injection in sequence, meanwhile, through a rail pressure sensor installed on a common rail pipe integrated with a plurality of preset pulse type injection valves, the rail pressure in the injection period of each pulse type injection valve is monitored; and then the rail pressure difference value corresponding to each pulse type injection valve is determined according to the rail pressure monitored by the rail pressure sensor, and whether the corresponding pulse type injection valve breaks down or not is judged according to the rail pressure difference value. According to the method, the obvious rail pressure fluctuation during injection of each pulse type injection valve in the st