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Re: Re: Re: Re: Propane vs Gas for fuel consumptio
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Posted by Jon H on January 16, 2004 at 14:07:40 from (69.26.16.191):
In Reply to: Re: Re: Re: Propane vs Gas for fuel consumption ?? posted by marlowe on January 16, 2004 at 12:28:59:
What he is refering to is a dual fuel mixer which replaces the air cleaner on top of the gasoline carb. The gasoline carb has no modifications except to have a 12V fuel solenoid in the fuel line. When operating on propane,the fuel solenoid to the gasoline carb is closed so it runs dry and only serves as a throttle body for the propane mixer mounted on top in place if the air cleaner.
When operating on gasoline, a fuel solenoid turns off the supply of propane to the mixer so it operates only as an air cleaner for the gasoline carb which has it's fuel solenoid opened so it again works as a gasoline carb. A very simple and efficient system that allows a change from gasoline to propane fuel in no more time than it takes for the gasoline carb to run out of fuel.
I run several tractors and pickups with this system and would guess the mpg difference is close to 5%. The BTU difference between gasoline and propane would say the difference should be more, but it seems the propane system seems to be more efficient at combusting it's fuel than the carb gasoline systems. Like they say, your mileage may vary.
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