Finally a clear photo of an IGSNOTOVICH (sterlingtype) snowmobile motor for the secret Russian Wanker racing team. Aha!!! I have it. Breznev Lives. time for my meds, chris
I think Bandit is correct. It is a fuel injected 2 cycle engine but I don't think the super charger would be 'downstream' of the pistons if the charge comes through the crankcase. My guess is the belt driven bits might be rotory valves. Too bad we can't see the other side of the engine.
Looks like the front and back of a very neat and strong EFI SOHC 3 cylinder motor. Make a mean motor for a Geo Metro!! lol
Well they are Ferrari engines, from what I understand. Here are some larger pictures http://www.owners.ferrari.com/esImages/20011120/pilotino3.jpg http://www.owners.ferrari.com/esImages/20011120/pilotino4.jpg
I think that read somewhere that they are Ferrari's test mule motors for trying out different parts, spec, combinations in a prototype laboratory before they waste money and time trying concepts in production engines.
Man, that thing isn't like any single cylinder research engine I've ever seen! The kind of "playing in the sandbox" work you're referring to is usually done on single cylinder engines with thermocouples sticking out everywhere and components machined from billets. That thing's all cast & everything! Rev. Atari, how did you FIND those links? I looked at the rest of the pics in the series and they were certainly more conventional. My assessment: It's a 2 stroke with intake valves that have some super-trick new valve actuation technology. That woudl explain the enormous cylinder head. I'm just not 100% confident that trick valvetrain would be pneumatic as there's no need to spin a makeup compressor proportional to engine speed. It revs to the moon,hence the need for 2 fuel injectors to handle the large range of fuel delivery required (think of a 1000-15000 RPM range). The exhaust ports exiting the cyl. head seem to be located pretty high up (studs are visible in the backside shot), which is puzzling. That makes me think of a fairly long tuned length, but there's no telling what would be bolted onto that, so maybe not. or it's just a big prank they put together to mess with the tourists' minds!
It looks like 2 stroke with standard cam operated exhaust valves. Reed valve work well for the intake, but just using ports on the exhaust really limits the width of the power band. Many now use a valve on exhaust with variable timing to help control this. A cam is an expensive way to do it, so probably related to trying to meet EPA or similar regs.
By looking at the pics of this motor we can see the crank and i beleve cam are runing at same speed so its a 2 stroke with exh valves,reed valve is not the way here and the ports in the pic wont allow it,it has to be supercharged as i dont think the exh pressure from this would drive a turbo charger very well but could be wrong,there are three main castings head,cylinder's and crank ladder,the large rail at the rear top looks like a water rail and the exh ports must be the other side of the head, Ok guys how they lubricating this motor,i have my theory's what you guy think, Dale.
Type F134 - 3 cylinder, 2 cycle, supercharged experimental engine of 1994 per "Tutti I Motori - Ferrari", page 115: "An interesting three cylinder two stroke supercharged prototype shows the versatility and the interest of the Ferrari research department for unusual products." Best wishes
As Honda is claiming 1000 horsepower from its next generation 3000cc V10 Formula one engine, maybe it's a 900cc, 300 horsepower engine for their 1995 lawn mowers.
None of the two stroke engines I have ever seen had a camshaft as they do not have valves as in a four stroke engine. They either have piston port, reed valve or rotary valve to control the intake and exhaust none of which requires a camshaft.
Next time you see/hear one of those buses, either a transit bus in the city or a Trailways that has that distinctive Detroit Diesel 2 stroke howl (or a firetruck)... Think of the noise you remember those buses making rather than the more-and-more-common 4 stroke thumping... Those engines have familiar tulip head valves for exhaust... 4 per cylinder! Here's a diagram (credited to Detroit Diesel Allison, so it's pretty old as DDC is now a part of DaimlerChrysler, not GM! Likewise, why it's called 4 stroke, when it's demonstrating a 2 cycle engine is beyond me) from a website that gives some info on these engines: http://www.yachtsurvey.com/comparing_diesel_types.htm Cool, huh? I'm not sure, and don't feel like researching it, but the Orbital (Austraila) engine that they were trying to develop for passenger cars in the 90s probably had valves, too.
