[Cat-tech]

Question to you tunners on high pressure common rail engine either it be 5.9 to x15 2350. Here we go so there are multiple fires on the injector starting from pilot all the way to the last fire.
So I have heard that when the injector fires you get a natural egr effect because the injector fired. Is that necessarily true or was it just to balance the piston from vibrating. If it is true how much oxygen could it have used so when I do fire the main injection I could have enough oxygen to the fuel to I want to add. Or second thought the fuel on the pilot does not combust just balances the piston and no oxygen is used up and the fuel from the pilot injection ignites when the main injection happens. If you have any info please advice.

If you take a look at most CM2350 files, they don't use any pilot injection in chi4 mode at operating temp. They do run quieter with pilot injection but burn a little more fuel at idle.