How to Measure Volume/Injection in a CRI Engine Injector Tester?

  • Thread starter Thread starter mandala09
  • Start date Start date
  • Tags Tags
    injector
AI Thread Summary
To measure volume/injection in a CRI engine injector tester, various methods can be employed. One suggestion is to catch the spent fuel during a set number of injections to measure the total volume accurately. Another approach involves using a flow meter installed in the high-pressure supply line to obtain direct readings. Options for flow meters include thermal mass flow meters, ultrasonic Doppler flowmetry, and laser Doppler velocity measurement. Accurate measurement of injector performance can also be inferred from consistent exhaust temperatures.
mandala09
Messages
9
Reaction score
0
Hello all. I have a project to make the injector tester for CRI engine. Any ideas how to measure volume / injection ?

Hery
 
Engineering news on Phys.org
There are all sorts of injector testers on the market to buy and there all very simple in how they work. If i were you id copy there design and it shouldn't take to much time or money.
 
In the market generally is testing carburetion, but how to measure the volume/injection of fuel I have not found. But thanks for the advice.
 
Playing with injectors and common rail fittings can give parts of your body a diesel fluid injection. That will lead to local trauma and often a Clostridium infection.

Perhaps measure the exhaust temperatures. If they are all similar then injector volume is OK.
The alternative is to catch the spent fuel while counting 1000 injections and measure the volume.

If you inserted a flow meter in a high pressure CR supply adapter to one injector you could get a direct reading. There are a few ways I see to do this accurately.
http://en.wikipedia.org/wiki/Flow_meter
Firstly; A low technology thermal mass flow meter.
http://en.wikipedia.org/wiki/Flow_meter#Thermal_mass_flow_meters
Secondly; Ultrasonic Doppler flowmetry.
http://en.wikipedia.org/wiki/Acoustic_Doppler_velocimetry
Thirdly; Laser Doppler Velocity.
http://en.wikipedia.org/wiki/Flow_meter#Laser_Doppler_flow_measurement
 
All else being equal, shouldn't you be able to measure the explosive energy (by the displacement behavior of the piston) of the fuel air mixture and using molar fractions calculate the amount of moles of combustible released into the chamber?
 
Thread 'Turbocharging carbureted petrol 2 stroke engines'
Hi everyone, online I ve seen some images about 2 stroke carbureted turbo (motorcycle derivation engine). Now.. In the past in this forum some members spoke about turbocharging 2 stroke but not in sufficient detail. The intake and the exhaust are open at the same time and there are no valves like a 4 stroke. But if you search online you can find carbureted 2stroke turbo sled or the Am6 turbo. The question is: Is really possible turbocharge a 2 stroke carburated(NOT EFI)petrol engine and...
I need some assistance with calculating hp requirements for moving a load. - The 4000lb load is resting on ball bearing rails so friction is effectively zero and will be covered by my added power contingencies. Load: 4000lbs Distance to travel: 10 meters. Time to Travel: 7.5 seconds Need to accelerate the load from a stop to a nominal speed then decelerate coming to a stop. My power delivery method will be a gearmotor driving a gear rack. - I suspect the pinion gear to be about 3-4in in...

Similar threads

Back
Top