[Gasification] Replacing fuel-oil with biomass

[andy schofield]

            Dear Art, Tom, Max, Arnt,
Manuel, Doug,

  Controlling The fuel to air ratio at the engine using robotic valves will 
certainly make engine  operation simpler. It frees up the operator to 
concentrate on other tasks that a robot cant' do: like waving to the farmer 
picking corn who wonders "what the heck is that on the back of that pickup?" 
Around here, we always wave back.

  Total engine control is the goal. Woodward Governor has gas-engine control 
modules that will sense exhaust-gas oxygen, and trim excess-air at the 
mixer. Bias-fuel (rich mixture) is applied when accelerating, or not when 
slowing-down. The controller learns conditions in the cylinder to advance 
the spark event before top-center on the compression-stroke to achive 
highest cylinder-pressure at the best part of the power-stroke (a special 
microphone-thing listens for detonation). Turbo-compressor 
discharge-recirculation can also be controlled by one of these. However, 
Woodward has no single-mixer body model specific for producer-gas. GLRF 
(systems) has a few conceps that need to be tested, and applied, but GLRF 
has only a gasifier that makes no tar and a V-8 that took the strain on the 
harness like Grandpa's Clydesdale.

  I predict crude-oil price to go higher before spring. Get busy, Weld some 
metal, cut some wood, Work hard, Git'er done!

Andy Schofield
Great Lakes Renewable Fuels

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