One Stroke Engines - 200% More Efficient??

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This could also work as a silent backup generator for home or a cottage.

It’s two stroke, the revolution gearing doesn’t change the fact that the piston reciprocates twice per power cycle of said piston.

The idea of the “range extender” is how I first heard the idea of hybrids described decades ago. A very small IC engine would be tuned to run at its optimal operating point to charge a smaller battery when needed and otherwise completely electric drive. It made a lot of sense to me. No transmission, the performance of electric drive but the backup capacity and energy capacity of gasoline when needed for longer trips.

Ricky, the first thing I thought seeing this engine was "that would be the ideal range extender" for a serial hybrid. I have 2 BMW i3s that do exactly the same thing but with a 600cc 2cyl engine that is tuned down for efficiency and longevity and makes around 23kW out the generator. It makes it one of the lightest production EVs made so far.

Your 'butterfly' swimmer is doing the 'breaststroke.'

This is just 2 opposing 2 stroke engines. To have a true 1 stroke, you would need to have a 2 stroke engine that has a combustion chamber on each side of the piston, so that it is pushed on each stroke by a power stroke.
Also, I love the idea of a sine plate. Dynamcam had a sine plate design in 1941. It had the benefit of completing 4 strokes for all 12 cylinders every rotation of the engine. This means that it could produce a lot more power for every rotation than a conventional engine. It was a very promising design, I'm not sure what ever happened with it. But it is still legal to have one in an aircraft to this day.

Your ending comment regarding driving. I couldn't be more opposite. I love the sound, the vibrations, the gear changes, the clutch, the feel of being part of the machine. You want to be isolated completely from the machine. Different strokes (see what I did there?). Take care.

It does make sense as an REEV engine. I drive a Chevy Volt, which operates on the same basic principle. The narrow optimal torque band and cooling issues aren't as much of a problem when the engine essentially just needs two modes: on and off. Plus, an EV owner is exactly the type of person who would appreciate the low noise and vibration. Assuming all the claims are true, of course.

Old dude here.
I’ve never been against electric cars. In fact I can see the practicality in them , except for 2 big reasons. Range and cost.
Neither of which has been addressed to date.
And frankly changing every car or truck to electric in America is impractical due to the cost of upgrading the grid, and needs of large semi trucks.
I know they’re working on it, but we still aren’t there yet.

The pursuit of efficiency will always be a worthwhile endeavor. To improve upon an existing or "old" technology is what many branches of engineering are all about. Also, what someone's education is in, or what their Linkin profile shows, is often not an indication of their full life education or experiences.

I'm not an engineer but found your explanations easy to understand. Great production quality as well. Clearly a lot of work went into producing it and it shows! Excellent!

Interesting question at the end! In the 1970s, during the Arab oil embargo, I worked out a plan to make a vehicle much like you propose. It simply had a battery pack, individual motors on each wheel, and a "small but efficient" engine running constantly at its most efficient speed to generate electricity to recharge the battery. That plus regenerative braking would have created an extremely efficient vehicle with 4 wheel drive and "silent running". Had something better than lead-acid batteries been available, and had I more money... woulda coulda shoulda...

14:59. The reason its a prototype is because there is ABSOLUTLY no lubrication going on. It would be extremely hard to cool that or improve its long lasting ability.

Why on Earth did you make the swimming analogy? It's even more complicated than engine lol

Dude, keep it up!!! Great video!!!

Cool video! Subscribed. Thanks.

The engines used on our patrol boats in Vietnam had a system of several rows of triangular engine sets that worked in a similar fashion. They were the Napier Deltic engine.

The world is not about to transition to EV.

I recall seeing an article in a motorcycle magazine some 60 years ago about a multi piston engine without con rods, with the cylinders arranged radially. The pistons ran onto a central cam/crank. The engine was built into the rear wheel of a motorcycle and according to the magazine article it did run. My memory tells me it was invented by an Indian Engineer at a U.K University but I have no further knowledge of it.