QUALITY CONTROL OF DIESEL INJECTOR FUEL ATOMIZATION Russian patent published in 1997 - IPC

FIELD: diesel engineering, in particular, flow quality control of injectors in the process of production and repair. SUBSTANCE: injector to be checked is placed in an isolated acoustic chamber furnished with an acoustic measuring system having a microphone positioned directly above the injector, amplifier, spectrum analyzer, analog-to-digital converter and a personal computer. Fuel pressure is built up at the injector with the aid of the pump, as a result of injection an acoustic impulse is produced, which is measured; vibration spectrum is determined and them compared with the spectrum of the standard injector. As a result of the above comparison, quality control of atomization is accomplished. EFFECT: enhanced truth of control. 1 dwg