On Mon, Apr 6, 2009 at 6:50 PM, Allan Streib <streib@cs.indiana.edu> wrote:
> Another post got me curious, and I read a bit about how Digifant works.
> From what I read it seems that all 4 injectors fire together, which
> confuses me -- I would have guessed that each injector fired just as the
> intake stroke was starting for that cylinder. �Does the fuel vapor just
> sort of accumulate behind the intake valve until the intake stroke for
> that cylinder? �Surely 3/4 of the injection cycles are not "wasted"
> fuel??

An interesting question, that appears to have been answered.

FWIW, I googled using the term "batch fire" and found that the correct
term (or possibly one of them) is "simultaneous injection".

Neil.
--
Neil Nicholson '81 VanaJetta 2.0 "Jaco"

http://tubaneil.googlepages.com/

http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines