CR-SG: Why Only 6 Injectors?

As is well known, a common-rail control unit (at least in MAN engines) can only control 6 injectors.
That's why V10 engines require two engine control units (ECUs) that are connected to each other via a CAN bus.
Does anyone know why they don't build a system that can process all 10 injectors? Surely, it should be possible to develop something like that.

I suspect it's cheaper to install two control units than to create a new one.

I also suspect that it depends on the processing power. In other words, it might be too slow (processing too much information).

But, as I said, these are just speculations...

Best regards,
MIkl

As is well known, a common-rail control unit (at least in MAN engines) can only control 6 injectors.
That's why V10 engines require two control units, which are then connected to each other via a CAN bus.
Does anyone know why they don't build a system that can process all 10 injectors? Surely, it should be possible to develop something like that.



Quantities, quantities, and quantities again.

Martin R wrote:

Does anyone know why they don't build injection molding machines that can process all 10 injectors at once?

Hi,

As far as I understand, this is due to the processing speed of the engine control unit (ECU). While it would be possible to control more injectors, it would require processors that are so expensive that it would be cheaper to install two ECUs.

By the way, there's also a similar "magic" limit in the context of the Bie PD: 5!

By the way, there's also a similar magical limit in Bie PD: 5!

Is there a new control unit available now that can control more PD elements? I read something about that somewhere.

Best regards, WarLord.

WarLord wrote:

Is there a new control unit available now that can control more piezo injectors? I read something about it somewhere.

So, with the EDC16 series (the currently available version), there were still 5.
Does anyone have more up-to-date information?

I'll take a look tomorrow.

CU Gremlin.

Bertil wrote:

So, with EDC16 (the currently active series), there were still 5. Does anyone have more up-to-date information?

According to the documents available to me, the PD-EDC16 also has a 6-cylinder engine.

However, the CR system is specified with 8 cylinders in that case.

I did a quick, superficial search.

EDC-16 for 6-cylinder engines with direct injection (DI) and common rail (CR).

MS6.2/I: Truck PD (UI / UIS) up to 8 cylinders.

Unfortunately, I don't have access to EDC-17 or ME(D)7.

CU Gremlin.