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. 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. 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 pressure difference during the injection time the time interval between opening and closing of the nozzle (injection time). We highly recommend covering your freight with at minimum 500.00 of coverage PER injector sent in.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, New Index 12 injectors are currently over 500.00 each. The Injector Shop is not responsible for lost shipments or damage from any shipping provider and will not pay any claims. You have the option of purchasing shipping insurance here. Bottom line is these knock offs are absolute junk, and I will not waste my time or your money testing them……PLEASE DON’T SEND THEM!! VERY IMPORTANT SHIPPING NOTE: Please be aware that if you send in non-OEM (Chinese knock off) injectors we will immediately re-package and send them back with refund of service, minus return freight and a handling charge of $20.00. The Injector Shop Piezo GDI testing service consists of:ĭON'T SEND IN CHINESE KNOCK OFF INJECTORS:
#Piezo injector testing borders full#
Not only do GDI systems run at considerably higher fuel pressures than port injection, GDI fuel injectors operate pulse widths at micro second measurements, where port systems operate at milli second time measurements, and our GDI specific equipment tests at these micro second operational parameters while performing full function load testing. Testing this way allows for precision measurement under operating conditions that can be digitally analyzed against the OEM flow test plans set by the injector manufacturer. Great service for repair shops or DIY'rs that have cleaned and serviced their VDO GDI fuel injectors and want to have them flow tested to OEM standards before installation.īMW Index 12 Injectors are safely tested in specialized GDI test equipment at operating pressures typically up to 3000 PSI against OEM BMW test plans utilizing precision measuring devices that measure liquid flow on a shot to shot basis, at actual operating pressure. Testing in performed using GDI specific precision test equipment, unlike most of our competitors that are testing GDI injectors on equipment designed for low pressure port fuel injection systems (ASNU type). The Injector Shop is proud to provide Piezo GDI fuel injectors testing services for the N54, N63, S63, and N74 engines.
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