fuel injection technology Flow and Spray Test Bench GDI Injector

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The Flow and Spray Test Bench GDI Injector is designed for the entire analysis of important parameters of GDI-fuel injectors. Explosion protected components enable the operation with n-heptane as test fluid.

The bench provides the following test functions:

  • Dynamic test in mg / inj (volumetric / gravimetric / shot-to-shot analysis)
  • Static flow test in g / min (volumetric / gravimetric)
  • Measurement of opening and closing times
  • Injector spray characteristic (axial / radial spray geometry)

Highlights  

Flow test station including:

  • Downstream gravimetrical measurement system with high-precision balance
  • Downstream flow test circuit with coriolis flow meter
  • Shot-to-shot measurement system, determination of injector rate signal and timing behavior
  • Measurement of injector opening and closing times

Spray test station including:

  • Spray test chamber configured for lateral backlight inspections and bottom view inspections
  • Injector nest rotation by means of a stepper motor
  • Stepper motor driven traverse unit including camera and lightning unit

Fuel supply system including:

  • High-pressure supply including piston pump and pressure regulation up to max. 500 bar
  • Low-pressure supply
  • Temperature regulation of the test fluid

Windows based operating interface for automatic and manual mode and process parameterization

Configurable test sequence

Descriptive visualization of processes and results

Touchscreen HMI

Technical data  

  • Dimension: 4320 x 1845 x 2359 mm (L x B x H)
  • Test fluid: n-Heptan
  • Operating pressure: 40 – 500 bar
  • Flow test range: app. 1 l/min
  • Temperature: 21 +/-1°C