alt.energy.homepower

On Aug 31, 8:20 am, wmbjkREM...@ wrote:
> On Fri, 31 Aug 2007 15:00:08 -0000, philkryder < ...@ >
> wrote:
>
>
>
> >On Aug 31, 7:06 am, "Pete C." < ...@ > wrote:
> >> Engines can indeed be built to have multiple compression ratios and
> >> operate dual fuel, I have such an engine, an International UD9 "diesel".
> >> It has two compression ratios, one for operation on gasoline and one for
> >> operation on diesel. It also has a carb, spark plugs and diesel
> >> injectors.
>
> >> The dual compression ratio is achieved with a third valve in each
> >> cylinder, each of which open to a small chamber that contains a spark
> >> plug. When the valve is open the chamber adds volume to the cylinder,
> >> lowering the compression ratio to one suitable for gas operation and of
> >> course exposes the spark plug, also necessary for gas operation. When
> >> the valve is closed the compression ration is appropriate for diesel
> >> operation, the gasoline supply to the carb is disabled and you enable
> >> the diesel supply. Very interesting built like a tank engine.
>
> >Yes, but ....
>
> >Were those engines designed to RUN under LOAD on gasoline?
> >Or was that simply a starting aid?
>
> >Phil (many days plowing with a TD6)
>
> I have 2 of the old International engines. The carb only allows fast
> idle, about enough to move the machines in low-low but nothing more.
> The decompression valve would fry if you increased the power.
>
> Wayne

Yeah like that.

I have moved them a bit when out of diesel, but the gas was for warm
up and start.