The device has been developed to solve a particular situation rising when testing piezo common rail injectors, as the piezo actuator must result lubricated before being energized. PiezoDevice 87.20.116 is the specific device to be used on an exhisting DIT31 test bench for diesel injectors. Piezo actuator control requires the addition of CRP module to the external unit TC38.Ĭonnection and test methods keeps unchanged contrary to the test of electromagnetic common rail injectors. The electromagnetic actuator control is delegated to the external unit TC38, which once synchronized with DIT31, generates the excitement command, via smartcards. Automatically test various solenoid valve injector and Piezo injector. The injector in the center has at least one of the nozzle holes with a reduced diameter by dirt or oxide while the nozzle holes of the injector on the right are expanded by wear. It can Testing BOSCH, Denso, Delphi, SIEMENS, Carter and other injectors. On the left, the injector injects the correct amount. This parameter, together with the injection time, determines the amount of the injected fluid. On the left an injector that pulverizes exactly on time, on the right an injector that responds with a delay.įor each chatter, at constant pressure DIT31 calculates the difference between the level of pressure on opening and closing of the nozzle. Injection time is the time elapsed between the opening and closing of the nozzle. Opening delay is the time to translate the electrical command into a mechanical movement The injector on the left has an acceptable quantity of return the other one on the right has an extra internal leakage. Known the acceptable leckage time, any lower value indicates a too high back leackage. With the injector pressurized, the pump is stopped and the pressure drops gradually, depending on the return. Hydraulic pressure machine hydraulic press 20/50/100/200 tons High Pressure Manual Hydraulic Machine + Details + Inquiry. Diesel Fuel inyectores calibration machine CR919 common rail pump and injector test bench + Details + Inquiry. Pourtant ça claque / broute en accélération entre 1500 et 2500 trs/min. Et aucunes différences de débit entre injecteur neuf et injecteurs dorigine (200 000km). Piezoelectric actuator control requires the additional CRP module to the unit TC38.Īctivated the automatic triggering cycle, it is easy to find the minimum pressure which allows the chatter.Īctivated the automatic triggering cycle, it is easy to find the minimum pressure which allows the chatter CR301 Common rail piezo injector injection pump test bench Denso HP0 pump test bench + Details + Inquiry. Pour ma part je viens de faire le test de retour dans des bouteilles. pressure difference during the injection time the time interval between opening and closing of the nozzle (injection time). The most popular method to measure the flow of a common rail injector is to collect in a graduated glass the amount of liquid introduced during a known number of injections and compare this volume with the graduation of the container.Īn alternative able to provide higher resolution, is to split the flow in its two fundamental physical parameters: that is,
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