Fuel Injector

Fuel injector

Fuel Injector Testing Machine – ASNU Classic GDI Injector Testing Machine.

The ASNU network services over 600,000 gasoline injectors per year worldwide, with distribution in over 60 countries.

Our injector diagnostics programme covers all gasoline injectors and high performance fuel pumps used on cars, bikes and marine engines.
The ASNU Classic GDI Injector Diagnostic Testing & Servicing System allows you to compare injector performance safely.

It can be used by apprentice level mechanics as well as Master level engineers.

On a vehicle fitted with a GDI system, the fuel pressure will operate at a potentially dangerously high level for the inexperienced, reaching anywhere between 75 and 200 bar.

To enable a safe and easy examination of the injectors’ performance, the ASNU kit runs the injectors at a lower and safer operating fuel pressure, up to a maximum of 10 bar.

Testing at low pressure also makes examining the free movement of the pintle easier; high pressure can mask the free movement.

The Engine Management System of a GDI is designed to open the injectors for micro-second durations. With a maximum opening duration of only five milliseconds, any visual analysis of the injectors’ spray patterns could be both difficult and dangerous.

When mounted on the ASNU Classic GDI, the injectors are being supplied with the correct peak and hold currents and firing in sequential mode, simulating those of the vehicle’s ECU.

The ASNU system allows the user to safely examine the injectors’ spray patterns in greater detail, looking for any discrepancies in the fuel distribution and atomisation.

In some operating modes, the ASNU system opens the injectors for a much longer duration, thus exaggerating the spray pattern and making it easier to examine performance.