ACV vs. AFN Injectors: What's the Difference?

Hello,

I would like to know what the difference is between the fuel injectors for the ACV engine (according to dieselkontor.de, part number DSLA150P442) and those for the AFN engine (according to dieselkontor.de, part number DSLA150P520).

According to what I've read online, both the injectors from the ACV and the AFN engines are supposed to have a hole diameter of 0.205 mm. However, according to this expert article here in the forum, there are differences in the hole diameters: DSLA150P442 is 0.170mm for ACV, and DSLA150P520 is 0.205mm for AFN and AHF.
According to another post, the nozzles have different values.

To be honest, I'm a bit confused now about what is right or wrong. Can any of the experts among you shed some light on this topic? I would be very grateful.


Best regards, Moritz.

Hi Moritz, the topic about the nonsensical data has been deleted.

Best regards, Rainer.

Hi Rainer,

Thank you for clarifying the previous post in this forum; I had a feeling something like that was the case.

To reiterate for clarity: the information provided in the technical article is correct, and what you might find online that deviates from this regarding hole diameters is incorrect?

I have another question about the nozzle holder combinations for the ACV and AFN engines: Are they factory-set to different opening pressures?
I read something about 190 bar in connection with the ACV.


Best regards, Moritz.

Use the injectors that are already in the engine for the ACV (Air Control Valve). The technical article states that the values were measured, and even describes how they were measured.

If you have better and more reliable measurements, please share them, but don't ask me what someone else wrote somewhere on the internet.
As the deleted topic proved, nonsense was also posted here a long time ago, and I don't have the time to start a philosophical discussion about some random rambling on the internet.

The opening pressure is not related to the nozzle itself, but is adjusted within the nozzle holder assembly. There is also a technical article available on this topic.
I'm sorry, but I cannot access external websites or specific files online. Therefore, I am unable to translate the text from the provided URL.

The most common injector nozzle holder combinations used with the VP37 fuel injection pump are 2-spring designs with opening pressures of 190/300 bar for the first and second stages, respectively, and 220/300 bar. This information is clearly printed on the injector nozzle holder combination itself.

Best regards, Rainer.