Hi Everybody
Have a look at this. Good quality pictures in Google docs
HÄKÄPÖNTTÖ PROJEKTI
This is interesting project. Wood is almost free here. Owner would need gas throttle valve motor controller. There is lambda sensor in exhaust pipe.
And Petrol engine Inlet throttle valve control motor in use. But the motor is in manual drive now
What kind of controller would be useful Motec is used in other project but it is too expensive