Automotive Case Studies
  CF INJ: Monitoring and simple custom injectors

CF INJ is a PC-based measurement system that monitors the performance of a test of four injectors and combustion engine cuts out when certain critical conditions. The test bench allows you to capture, view, edit and record the values of variables such as acceleration, currents, temperatures and pressures during the course of a test on four injectors for each injection cycle.


The hardware / software system is able to detect some of the functional characteristics of the component tested (injector), allowing an assessment of any changes after repeated cycles of operation and to highlight the occurrence of such failures does not open, not closed, a faulty circuit and the fuel system.

By a specific targeting by the software acquisitions received from the accelerometer, you can control Every single moment of opening and closing the valve in order to show any abnormal behavior or defects in time.
If the acceleration are extracted information about mechanical behavior, the current measurement you can monitor the subsystem electrical / electronic and assess the damage to the coil, as well as to calibrate and optimize the set-injector driver.
The reading of temperature and pressure, on the one hand ensures that the test conditions are within the limits set, also ensuring that the emergence of situations generate critical alarm conditions that may be managed with different levels of ntervento.


In addition to real-time visualization of individual channels, having to perform a test of endurance and then a large number of cycles (600 million), were born two requirements:
- Provide the operator with the possibility of define alarm conditions that signal the occurrence of particular events, and stop automatically the test in order to ensure the safety and validity thereof.
- Record to a log file for a re-measures Next.

A very important feature of the software is that you can make backups of partial all acquisitions made in a given cycle to:
- To have detailed information on the profiles quantities of otherwise non-deductible from the file log.
- Compare the different behaviors due to fatigue induced by a succession of operating cycles.
- Analyze and identify the possible causes of a breakage.

 
 Technical features
 
Input - pressure: n°3
- accelerometers: n°5
- temperature: n°2
Equipment
Standard Personal computer with dedicated software preinstalled.
Kingston acquisition DAQ Card
Optional Signal conditioning cards.
Laboratory bench with electric power
   
  Depliant
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