WIV und die (unvorhersebaren) Folgen | Posts 32+

I also view the PD technology very critically. In my opinion, the CR technology has just as many problems, but it can be implemented more cheaply. Even small incremental steps in research advance progress.


'...in my opinion, CR (common rail) technology wins the race. In the internal combustion engine sector, injectors with pressure amplification are currently being promoted (the fuel rail has a pressure of 1600 bar, but the injection pressure can reach up to 2100 bar). And piezoelectric injectors are also in development. Furthermore, high-pressure pumps that can be controlled quickly and precisely are being developed, allowing for what we might call 'pressure ramps' to be implemented.'
...and this is achieved through complete independence from any crankshafts or camshafts.

IMHO, PD will only be able to survive in the large engine segment, but that technology has actually been in use for decades .

CU Gremlin.

Hi,

Gremlin wrote:

"...in my opinion, CR will win the race."

"...then take a closer look at the research laboratories of the largest manufacturers. Currently, CR is quite far behind. For CR, only the bare minimum is being done, while PD and PLD are currently seeing massive investments."

Quote:

In the field of gasoline direct injection (GDI), injectors with pressure amplification are currently being heavily developed (the fuel rail has a pressure of 1600 bar, but the injection pressure can reach up to 2100 bar).

Especially in the non-ferrous metal (NFZ) sector, several new manufacturers have entered the precious and rare metals (P&R) market in recent years, and their numbers are constantly increasing.
Another new car manufacturer is about to adopt the PD technology (I can't say more than that... sorry).

Quote:

IMHO, PD will only be able to survive in the large engine segment, but that technology has actually been in use for decades .

Regarding the load on the crankshaft drive, you should look into Common Rail (CR) technology in more detail. I was also surprised, but the load caused by the CR pump is SIGNIFICANTLY greater than that caused by positive displacement (PD) elements (according to Bosch and SVA development). I will post an article about this in the next few days.