Correct me if I’m thinking wrong, but if you put two round pipes side by side, wouldn’t the shape have a venturi effect?
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Velocity of gases is moving from point A to point B In a amount of time. Frequency has to do with vibration of sound the gases make low, medium, high when moving. When you add very high heat then the bright light as it frequency too that is very high. Light operates in frequencies. Gases moving are operating in frequency of sound, by the velocity of movement the gases moves through the charcoal. Different colors of light are at different frequencies orange being a lower frequency then yellowish white. Orange flame is cooler then a much hotter yellowish white flame that can melt metals.
Frequency and velocity work together but are to different things.
Think about H2O it can be ice solid, water liquid, or gas steam. Low , meduim, high frequencies, but you can move all three at the same velocity from point A to point B at the same amount of time. In gasification I think it is not just in Black and White. It is in every color imaginable.
The Prove is Tone’s new design of gasifier. There is something new under the sun in design of a gasifier build. And to make cleaner gases too.
Sorry for drifting off subject Don, but I just get so excited about what is happening here on DOW with us all working together.
Bob
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Yes Al, it does. And this is something else that figures into the drop out of ashes and char dust with this venturi effect.
Bob
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OK professor Mackey, I just never thought about it that way.
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You are some kind of weinstein Bob. I often fail to think about light and color as having frequency because I am so accustomed to thinking in terms of music and there for frequency as measured in scales. To real world correlating gasifier sounds and colors as a diagnostic tool is kind of brilliant.
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Yes Tom, we actualy are doing it all the time. When we look at the flare of the flame we light off and what colors it is gives us information of the gasifier operation. Or looking at the smoke or the lack of it coming out of the gasifier. Just a light haze of gases, this is good. Black dark gases, more then likely tars are present in the smoke. Not good.
The Gasifier making music? Yes it does. It does make sounds and the movement of gases at different Velocities, Frequencies, with high heat of light when operating in the suction vaccum mode or pusher mode is music to the gasifier operators hears. If we can hear it or not, it is making the sound of Music.
Just watching a fire in a wood stove with a glass window operating or a open fire in a fire pit is amazing. Look into it deeply down where it is white hot. Wow gasification at it’s finest. I have spent many uncountable hours doing this around a camp fire. Feeling the warmth of it and seeing, and hearing the amazment of it all. No math involved, just observation of the eyes, ears, feeling.
Bob
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I was doing some thinking about the diesel-less ignition of wood gas. Initially it defies the expectations of the automotive world that is used to CNG/LPG and biogas requiring spark ignition or diesel pilot ignition.
It makes sense however that wood gas would combust at such high compression, especially when assisted by glow plugs temperature.
While carbon monoxide and methane have high resistance to autoignition, hydrogen has a lower rating.
Wood gas also has complex trace hydrocarbon molecules that are relatives of heavier tars, but do no damage to an engine as tar would. These are simply the leftovers of some incomplete oxidation and reduction reactions, every gasifier makes them and they cannot and don’t need to be filtered. They can have varying levels of resistance to autoignition.
There is also always a film of oil on the cylinder walls and oil vapor in the combustion chamber. The combustion characteristics of engine oil is very similar to diesel. This could be another contributor to diesel-less ignition being possible.
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Hello friends! I haven’t written to you in a while, but I check your posts regularly. I don’t know who to ask, so I’m writing here. So the crux of the matter is the following. Due to the war in my country, the lack of work and, as a result, money and the desire to save money on fuel, I want to know what risks are associated with the operation of a diesel engine running on vegetable oil (sunflower oil)? The thing is that the oversupply of grain production led to lower prices and the difficulty of selling oil, which in turn led to a loss of its taste (it became bitter). So, the price of bitter sunflower oil fluctuates within $0.5/liter, instead of $1.2/liter of diesel fuel. Can this oil be used in a car and what does it threaten?
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Joni you can use any kind of vegetable oil but I suggest heating it to remove all water.
I have seen people have success to add either a small amount of gasoline or turpentine to make it more ready to use in the cold months.
80% vegetable oil and 20% turpentine, it dissolves readily into the oil. Allow it to settle and any solids still in suspension will drop out.
You have the benefit of the oil being unused so you will likely have very clean filtered oil to begin with, but make sure it has no moisture.
Without any additions you may run the risk of the oil turning into gunk and clogging the injectors.
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Factory packaged oil in bottles of 5 liters, for human consumption. It’s just that its expiration date has long passed (bitter in taste) And yes, in winter I diluted it with diesel fuel and used the heating of the fine filter with fuel from the fuel injection pump return. I’m asking about possible breakdowns.
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The only failures I have seen are from the oil gumming up the fuel system, usually from it sitting too long. I think that is mostly from Olive and Rape seed oils, I have not noticed that from Vegetable, Sunflower, or Peanut oil.
Other failures are from cold temperatures but you have heating in the fuel system already.
EDIT: Do not under any circumstances mix Waste Motor Oil blends with Vegetable Oil blends. It will turn into an awful mess.
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The ‘Research Octane Number’ is distinct from ‘Motor Octane Number’
The RON for hydrogen is expressed as >130 while it’s MON is 60.
MON is the more important metric here, as it is measured at a higher engine RPM with preheated fuel charge.
For reference, for methane both RON and MON are 120.
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Hello Joni,
Since you do have some diesel; start and fully warm up the engine on pure diesel first.
Modify as you can to get quicker engine warming up.
Shutting the engine down switch back to pure diesel to purge the injector pump, lines and injectors. This set up for the best, next cold starting.
Vegetable oil used Neat unblended is usually engine coolant or engine exhaust heated for best results.
Other US and Canadian seed oil farmers credibly claim mixing their seed oils with ~10% regular unleaded gasoline allows skipping the seeds oils fuel pre-heating steps. And allows better fuel-oil performance across different diesel engine types.
NEVER heat gasoline mixes! The gasoline will vapor separate out making a war-bomb.
Regards
Steve Unruh
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Joni, glad to hear you. Hope you and your family do ok, relative speaking.
What Mr Steve said. Start and stop on diesel. Preheat the oil.
An old Mercedes has a preheater build in. I used up to 80% veggie in my ML270 cdi. No real problems. Old G klasse did ok too, nothing rebuild, just pour it in. It even ran fine on hydraulic oil. Bosch line pump is important, the Lucas seems to brake more often. But if you want to do it safe, make a two tank system.
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Joni, nice to hear from you. I probably did my “graduation” thesis on diesel engines, since I have been dealing with them for more than 35 years, but enough self-praise,… My first question is, in which diesel engine would I use vegetable oil? Vegetable oil is denser than diesel fuel, so it disperses more poorly on the nozzle, similar to engine oil. If it is used in engines with direct injection, which have very small bores on the nozzle, these holes can be blocked, and the injection is also in a jet, which is not good for ignition and operation. Another story is engines with fuel injection into the antechamber, these have nozzles with one larger bore through which the injection is made, these nozzles do not clog even when using used engine oil. The interesting thing about these engines is that the fuel is injected into a separate chamber where very hot air is swirling, so the fuel is gasified and burned, well, complete combustion takes place in the cylinder of the engine during the work cycle. Some time ago I remember that you had a Fiat Doblo, if it has a 1.9 D engine it is a good candidate for vegetable oil, but if you add wood gas to it, the combustion will be perfect, I highly recommend this combination. 
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What Joep said, Bosch inline pumps have no troubles with veggie oils, Cav or Lucas pumps (rotor type) can break from clogging, or to thick oil.
Old Simms inline pumps probably can chew grease, they seems to handle everything.
Met some guy that drove an old Mercedes on canola and sunflower seed oil, only, only modifications he had was a powerful electric feeding pump in tank, and he let the return line pass through a copper pipe winded around coolant hose as a “fuel tank heater”. No start on diesel, he told me it was really slow first km’s.
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Another short report about my Fergie. These days he was doing the most difficult work ever, he was running a stone crusher, where I was crushing sand for concrete from a larger granulation. Above, I enlarged the dosing hopper, so the working jaws are completely filled with material that needs to be pressed and crushed, which requires a lot of power. This drive on pure diesel fuel Fergie does with difficulty, but surprisingly, in combination with wood gas, the shredder rotates equally, the power is really phenomenal. (10% diesel fuel, 90% wood gas). I didn’t even try it on 100% wood gas until the ignition was controlled.
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So you are making higher power with woodgas? I wish I could see brake dynamometer tests for diesel, 90% woodgas and 100% woodgas. But you have done wonderful things already. Congratulations.
Rindert
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Thank you all for your replies.
My prechamber Doblo 1.9d seems to agree with all of you.
One thing is strange, the smell of exhaust smells like fried fish.
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