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new ideas to better mix fuel/air in the combustion chamber
This is a long read and yes... it is about a gasser but..... but hmmmm... interesting idea. Grovey fuel mixing.
Would love your comments. Anyone got a dremmel tool want to experement?
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"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way". by JerryBro The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair 62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels |
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What does ' side valve' mean ?
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Side valve & etc.
Side valve is the old Briggs design that has a sort of elongated "D" shape cylinder head and the valves are driven by a cam INSIDE the crankcase and come up beSIDE the cylinder (AKA side valve). I purchased a copy of the patent and I'm gonna' try it out on my 'tiller. (Cheepest motor I got that I can PLAY with!) I guess as long as I don't try to sell it for a profit I'm legal? Anybody out there know about patent laws? I really don't want to do anything that's illegal!
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FAA Certified A&P Tech Still lookin' for my diesel! <>< |
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I think of that engine as a "flathead". Is this the same thing as "sidevalve"?
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Those groves in the cylinder heads are remarkably similar to the radial trenches in the piston tops on a 617.952!!
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Never a dull moment at Berry Hill Farm. |
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bump back to page one. Love to here more comments on this.
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"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way". by JerryBro The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair 62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels |
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__________________
"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way". by JerryBro The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair 62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels |
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Its a very interesting idea. Radial grooves cut into the squish band area to allow the trapped air/fuel mixture to be pressed out, and up into the central combustion area to better facilitate combustion. If this works this guy will be pretty wealthy. I don't think it applies to diesels since combustion doesn't start until the fuel is injected. Since the air/fuel mixture isn't premixed I don't see how the grooves would do much. RT
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When all else fails, vote from the rooftops! 84' Mercedes Benz 300D Anthracite/black, 171K 03' Volkswagen Jetta TDI blue/black, 93K 93' Chevrolet C2500HD ExCab 6.5TD, Two-tone blue, 252K |
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Air swirl in the combustion chamber to promote combustion isn't exactly a new idea. Main problem is keeping the fuel mist in the air instead of spun out onto the piston and head, where it won't burn.
There are all sorts of tricks out there, and since lawn mower engines are probably the last extremely low compression, sloppily engineered engines out there, almost anything will improve them (the typical suburban 1/4 acre lot push more produces more pollution in unburned hydrocabons and CO per week than the cars the family uses, this is why they were banned in S. Cal. a few years back). However, a flathead engine is just about useless for anything but smoke and excess fuel consumption -- no way to get the air in and out. European engine designers dropped them in the 30's. Peter
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1972 220D ?? miles 1988 300E 200,012 1987 300D Turbo killed 9/25/07, 275,000 miles 1985 Volvo 740 GLE Turobodiesel 218,000 1972 280 SE 4.5 165, 000 - It runs! |
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"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way". by JerryBro The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair 62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels |
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Further search of the patent seems to show His patent claims that increased efficiency engine is "adapted to burn fuel that is 1/2 gasoline and 1/2 diesel" hmmmm.
Patent
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"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way". by JerryBro The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair 62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels |
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Sounds like the old "wasn't invented here syndrone". Would the highly paid engineering staff want management to know some guy in a work shop came up with a better engineering design than them?
P E H |
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Combustion science is partially "black art" -- it's very hard to see what's going on in there and hence difficult to model and determine whether or not a change is making a difference.
The great bane of wedge-head designs is quench -- the fire goes out when the flame front touches metal, and the thin "wedge" where the piston and head are close quenches the flame, at least initially. The result is wasted fuel and excess heat transfer to the head and piston, along with copious amounts of unburned hydocarbons. I suspect what is going on here, if indeed there is something, is that the quench area is being greatly reduced -- the gooves carry the flame deeper into the quench area. There is also the possibility that he is increasing the swirl some, etc, but that is going to take some high class engineering to figure out. All engines have quench area, hemi's the least, wedgeheads the most, and some much more than others (GM seems to be the worst for some reason). Promotion of clean burn and better scavenging of exhaust gases will greatly improve the engines performance. Wait and see -- the coming fuel shortages will provide a large incentive for fuel efficient engines, and not all that much has been done yet. Clean emissions will be the bugbear here -- for instance, the Dodge Neon 16v engine bends vavles if the timing belt breakes because, appearently, the notches in the pistons required to avoid that doubled the unburned hydrocarbon and NOx produced. Peter
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1972 220D ?? miles 1988 300E 200,012 1987 300D Turbo killed 9/25/07, 275,000 miles 1985 Volvo 740 GLE Turobodiesel 218,000 1972 280 SE 4.5 165, 000 - It runs! |
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