Re: fuel injection

[Tom Jennings <tomj@xxxxxxx>]

Modern fuel injectors are all-open or all-closed, and the
computer determines how long to turn them on (during the intake
cycle). On time is in thousandths of a second, with accuracies
in the tens of thousandths.

It turns out that all the complexity is needed to be able to
drive the damned thing on the road. For flat-out drag or circle
track mechanical stuff works, but it would be a bear to go to
the store in.

Notice that fuel injection didn't really become practical until
microcomputers became tiny and cheap. The Bendix systems of
the 50's were very simple electronics -- and they didn't work

for s**t.