Natural Gas instead of petrol

[Jim Zurlo]

At 12:49 PM 7/3/97 +0200, you wrote:
>Hi
>No way it will work. 
>The ECU is programmed to make injectors deliver just right amount of fuel at
>right time for every possible load/speed point.
>In principle lenght and timing of an electical pulse to injectors spill
>valve controlls this.
>That in its turn is dependant on hydraulic behavior of the injectors and
>fuel system.
>So, besides the mechanical conversions including special tank,valves, pipes
>and so on, you would have to remapp the entire ECU.
>It is much easier to convert carburated engine.
>Regards. Marek
>

There is a product from DAI called the translator that changes the mapping
based on whether gasoline or natural gas is being used.  I understand it
has problems with the transient enrichment, but works OK under steady
state conditions.

Jim Z.