CNG Vehicle in Perth, bit of an update

[Mike (Perth, Western Australia)]

At 10:44 AM 14/3/2000 +0800, you wrote:
>>>The ford they run is a six cylinder, (4.2L?) and runs the *same* fuel rail
>>>as the original petrol variant. The additions are:-
>>>
>>>a.	Injectors are high flow methanol units supplied by Bosch, I
>>>	will try to get a part number. Note: They operate at 200KPa
>>>	fuel rail pressure and the fuel rail is only dense gas (methane
>>>	mostly) at that pressure.
>
>>So thats about 28 psi.  Pretty tame.
>
>You don't need the pressure to cause a fine spray to vapourise the
>fuel - my guess.

Well even though the injectors are methanol - they flow gaseous methane,
hence no worry about vaporisation, hence exisiting fuel real pressure OK.

>>Nope.  All Ford parts fail at 60,000 Kms. :( (JUST KIDDING but it does 
>>explain a few things...)
>
>That would seriously offset the cost benefits of CNG. Fuel injectors
>are not cheap. At roughly AUD$1000 replacement cost, that re-classifies
>injectors as a consumable in the same order of magnitude as the fuel!

Yeah there must be a better way, <sigh> as always theres a lack of
readily available actuators...

:) mike

----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org