Ford's answers to the NHTSA 6.7 Investigation
There was a request for a link to Ford's answer's to the NHTSA investigation posted on a previous thread, since closed. Here is the link: Ford's NHTSA Answers to the 6.7 investigation This PDF i...
Forum Discussion
BenK wrote:NinerBikes wrote:
snip...
Ben, 2 lobe cam driving 2 pistons, like a harley davidson V, gives you four HPFP fuel compression strokes per rpm... and since this is a 4 stroke motor, the power cycle for all 8 cylinders takes 2 revolutions of the crank. So you get 8 pump pulses from the pump. 8 cylinders, 8 pulses, pump is driven 1:1 by gear drive on the Ford, belt drive on the Audi VW in line 4.
Okay, got it and that makes sense. Had thought single cam and
two followers and the wacky stuff they would have had to do that
Didn't see two cam lobs in the videos, but those videos are
marketing not technically targeted
IT also bolsters the cavitation speculation, as why would they need/want
to time it to the injectors?
Can only think of issues at the injectors and then that a big accumulator
would have solved that
Thanks
Doesn't the injector time of firing vary by RPM? At higher RPM, I would think that some lead would be necessary. The computer can easily fire the injector at any point...But if the pump is mechanically connected to the crank, then the pumps pulses would not be able to stay in time with the injection events...
Thoughts?
