ASNU Classic GDI

ASNU Classic GDI

Product Features

  • Backlit viewing window
  • Multi language selection
  • Digital operational display
  • Membrane keypad
  • Injector shot counter display
  • Injector shot timer display
  • Duty cycle display
  • Calculator for determining injector flow rates by lbs of fuel per hour or cc/milliliters of fuel per minute
  • Manual & automatic cleaning cycles
  • Capability to service all gasoline TBI-PORT & GDI injectors for automotive, marine and power sports applications
  • Easy to read LCD screens
  • Suitable for all types GDI injectors (except Piezo injectors – see optional extras below)
  • Sequential and simultaneous firing option for standard manifold injectors
  • Fast injector turn on and turn off circuits giving more repeatable results
  • Injector inductance test – checking injector electro magnetic circuit
  • Peak & hold current control with ECU matched current settings
  • Single injector selection during multi injector operation
  • Sequential injector firing operation for GDI injectors
  • Simulates on-car spray patterns & flow rates
  • Tests up to 8 GDI/FSI injectors at one time
  • 18 various M/S & RPM test settings
  • Static and dynamic operation

Optional Extras

  • USB computer interface with adjustable settings for simulating ECU peak & hold currents, millisecond pulse widths and engine RPM
  • Piezo Adapter Box (contact us for more details)
  • Available ASNU classic racing machine includes optional software program and variable voltage feature for performance tuners creating new fuel mapping for ECU’s
  • Marine 2 stroke for Ficht and ETEC injectors

Two Running Modes – Stratified Charge & Homogeneous

  • Stratified Charge Running Mode
    • This mode is the economical combustion cycle, in some systems, the Air to Fuel ratio can be as high as 65 to 1. In this mode the injector delivers a minimum amount of fuel into the combustion chamber, just before the piston reaches the top and before the plug fires. This mode is used at idle and light throttle settings when the car is driven slowly.
  • Homogeneous Running Mode
    • This mode is what would be called a normal combustion cycle, with an Air to Fuel ratio of 25 to 1. In this mode the injector delivers a normal amount of fuel into the combustion chamber. This gives the engine the required performance as the car goes faster. The Engine Management System determines when the system needs to switch between the Stratified Charge Mode and the Homogeneous Running Mode.

What is GDI?

GDI is an abbreviation for Gasoline Direct Injection, a process where the fuel is injected directly into the combustion chamber. There are many variations of this process, with manufacturers preferring their own abbreviation of the system, here are some of the ones currently in use:

  • FSI = VW Audi (Fuel Stratified Injection)
  • SCi = Ford (Smart Charge Injection)
  • IDE = Renault (Injection Direct Essence)
  • JTS = Alfa Romeo (Jet Thrust Stoichiometric)
  • SIDI = Holden (Spark Ignition Direct Injection)
  • HPI = BMW (High Precision Injection)
  • HPDI = Porsche (High Pressure Direct Injection)
  • Ecotec = GM, Vauxhall, Opel
  • CGI = Mercedes Benz (Charged Gasoline Injection)
  • DISI = Ford/Mazda (Direct-Injection-Spark-Ignition)
  • GDI = Mitsubishi Peugeot Citroën, Hyundai, Volvo, (Gasoline Direct Injection)

On a GDI system, the fuel is injected directly into the combustion chamber at a much higher pressure than manifold systems, up to 200 bar. These systems now require fuel pumps and injectors made of stainless steel and must be capable of performing at a much higher specification than ones seen on previous manifold injection systems. Both designed to deliver very precise quantities of fuel at extremely high pressures and in short periods of time, in some cases for fractions of a millisecond. To control these systems, the ECU is also of a higher specification and required to supply a higher current of up to 90v on some systems. There are many manufacturers of this type of system, but Robert Bosch is recognized as one of the leaders in the development of the GDI Technology.