oilless engine
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oilless engine
Guys,
A question that pertains mostly to engines that drive generators: would it be possible to build an internal combustion engine, especially working on diesel fuel, that would not need oil to lubricate the crankshaft, camshaft, rods etc. ?
I have heard (once upon a time) that GM/Opel had been venturing into something like this but abandonned the project due to too much protest from their dealers...No specific details though.
A question that pertains mostly to engines that drive generators: would it be possible to build an internal combustion engine, especially working on diesel fuel, that would not need oil to lubricate the crankshaft, camshaft, rods etc. ?
I have heard (once upon a time) that GM/Opel had been venturing into something like this but abandonned the project due to too much protest from their dealers...No specific details though.
Re: oilless engine
venturing into something like this
The project was called "Perpetual Motion 1.01"
The project was called "Perpetual Motion 1.01"
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Re: oilless engine
Yes, I know, but as mentioned I was told that Opel did actually had a 4-stroke that didn't need oil. Do not know more specifics.jeff swisher wrote: ↑Wed Sep 02, 2020 9:07 am 2 stroke as you know uses the oil in the fuel to lube the parts.
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Re: oilless engine
I think low sulfur diesel would have effectively killed that dream.
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Re: oilless engine
I think you might be talking about the, "Polimotor"..
Here --
https://en.wikipedia.org/wiki/Plastic_automotive_engine
I haven't kept up with concept so ain't much help.
pdq67
Here --
https://en.wikipedia.org/wiki/Plastic_automotive_engine
I haven't kept up with concept so ain't much help.
pdq67
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Re: oilless engine
From what I remember, the bearings were some kind of needle bearing type requiring no lube, but again no specifics.
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Re: oilless engine
That might very well be possible.Kevin Johnson wrote: ↑Wed Sep 02, 2020 6:54 pm I think low sulfur diesel would have effectively killed that dream.
Re: oilless engine
requiring no lube
Those needle bearing piston skirts and valve stems are going to be tough
Those needle bearing piston skirts and valve stems are going to be tough
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Re: oilless engine
Back when I had my Mercedes diesel there was lots of discussion about the wear increase on the internal injection pump components with the shift to low sulfur diesel. For a low rpm diesel driving a generator, diesel fuel would have made a passable lube. Cue additives being needed etc.
I think the way the increased wear was handled was to change the wear standard.
I think the way the increased wear was handled was to change the wear standard.
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Re: oilless engine
I think that if anybody bothers to look deep into the subject of, "Biodiesel", that one might find that it has excellent lubricity properties and is used as a diesel fuel additive to replace the removed sulfur.Kevin Johnson wrote: ↑Thu Sep 03, 2020 11:09 am Back when I had my Mercedes diesel there was lots of discussion about the wear increase on the internal injection pump components with the shift to low sulfur diesel. For a low rpm diesel driving a generator, diesel fuel would have made a passable lube. Cue additives being needed etc.
I think the way the increased wear was handled was to change the wear standard.
UMC here in town has a excellent Biodiesel Prof. in their Ag School. I contacted him, but if I remember right ,he passed on its lubricity properties because he looked at the fuel making and usage if it, not the lubricity end. I want to say that his name is Schumacher or something like it, it's been years....
pdq67
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Re: oilless engine
https://www.nrel.gov/docs/legosti/fy98/24433.pdfpdq67 wrote: ↑Thu Sep 03, 2020 1:48 pm ...
I think that if anybody bothers to look deep into the subject of, "Biodiesel", that one might find that it has excellent lubricity properties and is used as a diesel fuel additive to replace the removed sulfur.
UMC here in town has a excellent Biodiesel Prof. in their Ag School. I contacted him, but if I remember right ,he passed on its lubricity properties because he looked at the fuel making and usage if it, not the lubricity end. I want to say that his name is Schumacher or something like it, it's been years....
pdq67
Schumacher, L. (1995). The Physical and Chemical Characterization of BiodieseVLow Sulfur
Diesel Fuel Blends. NBB # 52019-1. Jefferson City, MO: National Biodiesel Board.
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Re: oilless engine
Encyclopedia Johnson delivers yet again!Kevin Johnson wrote: ↑Thu Sep 03, 2020 2:21 pm..
https://www.nrel.gov/docs/legosti/fy98/24433.pdf
Schumacher, L. (1995). The Physical and Chemical Characterization of BiodieseVLow Sulfur
Diesel Fuel Blends. NBB # 52019-1. Jefferson City, MO: National Biodiesel Board.
Felix, qui potuit rerum cognscere causas.
Happy is he who can discover the cause of things.
Happy is he who can discover the cause of things.