2 stroke injection experiences?

Todd Knighton knighton at net-quest.com
Sun Nov 10 01:46:31 GMT 1996


John Faubion wrote:
> 
>  3) at 14,000 plus RPM the time to fire an injector is only ~4 ms
> 
> That last one is probably the killer. Four milliseconds is beyond the
> current limits of injector technology. 

Why not just use pulse width modulation vs. firing the things every TDC
or every other TDC.  Many of the CIS, Continuous Injection Systems give
good atomization and certainly don't fire at TDC.  If you just mounted
the injectors upstream a little bit or even fired them upstream you
could be guaranteed a homogenious mixture as well as reducing the inlet
temp to pick up horsepower.
The F1 cars are running 14,000 plus RPM and 8, 10 and 12 cylinders with
very good fuel injection, so it's definately  possible and very
reliable.

Todd Knighton
Protomotive Engineering



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