alt.energy.homepower

In article < @ >,
"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.

I have one of those in my Austin/Western Roadgrader. One side of the
engine is Gas, (Carb, SparkPlugs, Distributer, ect) and the other side
is Diesel. ( Injectors and Injection Pump) IT IS A SWEETHEART to Start
even down in the -10F range. Turn on the Gas, Close the Choke, to 3/4
and hit the Start Switch. Let her warm up for about 3 minutes, and then
flip the Gas/Diesel lever to Diesel, and shut off the Gas. Once the
engine is warmed up on Diesel, you can Restart it on diesel with the
Starter Motor. IH made really good stuff "Back in the Day".

Bruce in alaska
--
add a <2> before @