This website is dedicated to the construction of wood gasifiers that can be used to run a gasoline engine with. Woodgas has been around for a long time and it. If you google “fema gasifier” there will be several documents that should pop up. Below is an example. and FEMA EMWE We’rk Unit D . gasifier unit (i.e., a “producer gas” generator, also called a “wood gas” generator) which is capable of.

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I mentioned in a previous post some modifications that might be done. Except for the technology of producing alternate fuels, such as methane or alcohol, the only solution for operating existing internal combustion engines, when oil and petroleum products are not available, has been these simple, inexpensive gasifier units. Although I’m still new to working with gasifiers I do have a few feathers under my hat that gave me some basic but solid knowledge on this topic since I’ve acquired some real world “hands on” experience with the construction and the operation of both the Imbert and the FEMA gasifiers plus I’ve read as much as I could on the topic even if some of the technical language was a bit fuzzy to me including watching every video out there I could find.

In creating wood gas for fueling internal combustion engines, it is important that the gas not only be properly produced, but also preserved and not consumed until it is introduced into the engine where it may be appropriately burned.

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You have to use harsh solvents such as gasoline to clean it off and when you stink your house up with the smell of tar and gasoline your spouse will make you give up your gasifier project and dreams or else they will KILL you and bury you in the back yard with it and tell your family that you left the country. It can be constructed with the most basic materials on hand. If you research other forums frequented by those with experience such as driveonwood.

A closure is only used to preserve the fuel when the engine is stopped. I have to disagree with you on one point and that gzsifier whether this model is a proven design. I am confident you have some insightful knowledge but this sounds a tad bit melodramatic to prove a point. Smoke and gas vented into the atmosphere while new wood was being loaded; the operator bad to be careful not to breathe the unpleasant smoke and toxic fumes.

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In fact, the use of wood gas as a fuel is not even restricted to gasoline engines; if a small amount of diesel fuel is used for ignition, a properly adjusted diesel engine can be fwma primarily on wood gas introduced through the intake manifold. This dust may be partially carried away by the gas; however, it might eventually begin to plug the gasifier, and so it must be removed by shaking or agitation. He got good results using charred wood chunks in a FEMA gasifier to fuel his trucks.

This means that combustion should be isolated to smaller region for higher fem temperatures i. In these twin tasks lie its advantages and its difficulties.

This report attempts to preserve the knowledge about wood gasification as put into practical use during World War II. Awesome point glad someone made itthere are going to be a lot of peoples uses and fuel sources that will differ from use to useand there several types of gasifiers as well Thanks for the added link.

The reader is urged to use his ingenuity and initiative in constructing his own wood gas generator. Adding additional insulation can further raise temperatures there which is important fsma tar reduction. Photographic documentation of the actual assembly of the unit, as well as its operational field test, is included in this report.

At the bottom of this zone, all of the available oxygen from the air was completely reacted. This unit was then mounted onto the front of a gasoline-engine farm tractor and successfully field tested, using wood chips as the only fuel; see Fig. The build is a bit more involved and technical. High-grade biomass fuels gaisfier as wood blocks or chips will flow down through the gasifier under the influence of gravity, and downdraft air flow.

Also, I express some skepticism that any filtration system will catch gasifisr the tar.

Adding the fe,a plate to the base of the fire tube serves a couple functions: This simple, stratified, downdraft gasifier unit can be constructed from materials that would be widely available in the United States in a prolonged petroleum crisis. I don’t want the thread to turn “heated” to discourage people in anyway Section 3 contains information on operating, maintaining, and trouble-shooting your wood gas generator; also included gasfier some very important guidelines on safety when using your gasifier system.


Naturally, the people most affected by oil and petroleum scarcity made the greatest advancements in wood gas generator technology.

Imbert gasifier vs FEMA gasifier

The same chemical laws which govern combustion processes also apply to gasification. Also, the driest possible fuel should be used, and the fuel should be sized properly to minimize bridging or channeling. Restricting air supply to a region just above the hearth as opposed to drawing air through the firetube is important as is helps reduce thermal losses that would otherwise be encouraged with combustion taking place over the larger firetube area, and the combustion reaction is isolated at or just below the nozzles which is important for supporting a wide turndown ratio and a variable fuel quality.

While it can do reasonably well with very dry fuel of a very regular size, it will make a lot more tar than the Imbert under all conditions.

However, petroleum shortages during World War II led to widespread gas generator applications in the transportation industries of Western Europe.

If more information is needed fem operating gasifiers on other fuels such as coal, charcoal, peat, sawdust or seaweeda list of relevant literature is contained in the Bibliography gaxifier the end of this report.

The purpose of this design is to get engines running quickly for essential functions when only biomass is available as fuel.

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Two-thirds is lost into the environment with the smoke. A schematic diagram of the stratified, downdraft gasifier is shown in Fig. The wood gasifier design presented in this report has as its origin the proven technology used in World War II during gssifier shortages of gasoline and diesel fuel.