The exhaust temperature of marine diesel engines is an important parameter of diesel engines. In the operation and management of diesel engines, pressure burst, compression pressure and exhaust temperature are generally the main basis for measuring whether each cylinder of diesel works normally. The pressure burst of the diesel engine reflects the fuel atomization state, the working fluid mixing state and the combustion state. The quality of fuel atomization is directly related to the quality of fuel injectors. So how do you know the quality of the injector? At this time, we need a set of equipment for testing fuel injectors. This equipment is the fuel injector test bench, which is called a fuel valve testing device in technical terms. The fuel valve testing device can detect the opening pressure and atomization state of the fuel injection.