Possible future small engine technology. - Snowblower Forum : Snow Blower Forums
 
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post #1 of 9 Old 11-21-2014, 03:17 PM Thread Starter
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Possible future small engine technology.

This company has developed a non-Wankel rotary engine. It appears they're aiming to put this in lawn equipment and such. It'd be interesting to see if it could be applied to snowblowers too.

http://www.wired.com/2014/11/tiny-en...ke-jet-engines
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post #2 of 9 Old 11-21-2014, 03:34 PM
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It sounds interesting but when you delve deeper their biggest issue is their unburned gases expelled so not as environmentally friendly as the new engines we already have plus they need to speak in foot/pound rather than HP.

Snow Removal Apparatus I own:
Ariens ST1530DLE, and good ole arm powered scrapper.
The 15 HP is a new Ducar engine sold
by Princess Auto in Canada.
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post #3 of 9 Old 11-21-2014, 04:32 PM
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5hp at 15,000 rpm, that motor might work for a leaf blower but would have no torque for a lawnmower or snowblower. with three sparkplugs that little motor must burn a whole lot of gas too

current machines
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post #4 of 9 Old 11-21-2014, 06:15 PM
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It's like a three cylinder car. It has three chambers but they are likely smaller in cc than a Tech or Briggs single.

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Make sure the windows are up before the snow plow goes by !!

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post #5 of 9 Old 11-21-2014, 06:18 PM
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Depending on it's power once you gear it down to 3600-3900 RPM you'd likely have more than enough torque.

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post #6 of 9 Old 11-21-2014, 06:58 PM Thread Starter
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I just thought it was interesting and thought it'd generate some fun discussion. Who knows if it'll actually go anywhere.
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post #7 of 9 Old 11-21-2014, 07:56 PM
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My wife had an '87 RX7 when we first got married. The engine would rev exceptionally high, but was gutless. The lack of torque made it a disappointing from a stop, and only adequate at speed. And Normex is correct, for this '87 to pass EPA regs in '87, it had a post firing chamber and two catalytic converters. And this doesn't even begin to talk about the vacuum lines and the pneumatic solenoids....

It also had some rather peculiar things from the factory. It had a small oil pump that would scavenge oil from the sump, and inject it post carburetor. My guess is that it lubricated the rotors' wipers. It also had an automatic antifreeze injector, that would inject a 90% antifreeze solution into the carb, in sub-zero conditions.

Just things, that I had never seen on anything I had ever worked on.

That said, I'm not sure that even with scaling this up to the 5-7HP range, that there would be enough torque, even with gear reduction.

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post #8 of 9 Old 11-21-2014, 10:43 PM Thread Starter
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One thing this design has going for it is no apex seals. It's a very different mode of operation from the Wankel design.
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post #9 of 9 Old 11-21-2014, 11:48 PM
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That is an improvement over the Wankel design. But that that does not mean that it is superior to either the l-head or the ohv design that exists.

This is a much closer reality to OPE use:

Inside Bruce Crowers Six-Stroke Engine | Autoweek

Garage:
MTD....2 stage(modern 8.5 HP) not my favorite
Honda HS622 TA-B - acquired at an auction- nice machine for it's size.
Toro S-140- Picked it up on trash day... it runs, sort of.
Yamaha YS 240 TB "Ricky" latest Craigslist find- on the bench now.
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