Fuel injection plugs

[Greg Hermann]

>>It might be possible to inject liquid --not gaseous--propane directly , and
>>dispense with the air boost, if one had injectors that would stand high
>>enough pressure AND if you could keep the liquid propane below its critical
>>temperature (206 degrees F.).
>>This would take rather trick injectors, and quite likely, refrigeration of
>>the liquid fuel. With reliably cold liquid fuel, the pressures would be
>>within the capabilities of current injectors.
>>
>>BUT--it COULD work, and work well!
>>
>>Orbital also plays some games with their injection timing (as well as
>>aiming) at light loads so to stratify the charge and gain some part
>>throttle efficiency.
>>
>>Regards, Greg
>
>
>Hi Greg,
>To keep the propane cool enough perhaps a system, as used by Jaguar might
>work.
>They use a cooler tube hooked up to the AC system to keep the fuel cool.
>regards
>Tom

Yep--and run a small coil of tubing warmed by engine coolant around/under
the fuel bottle/tank to warm it, so that there would be more than enough
gas pressure above the liquid in the bottle to generate all the liquid line
pressure you could ever want, with no need for a pump. Could use a small
electric bottle heater for starting.

Greg