PAUT MOTOR-REVOLUTIONARY ENGINE.wmv
PAUT ENGINE -
Prototype 2 is performed as an engine with two-sided pistons, positioned
at 90° to each other, in combination with PAUT two-stroke cycles (fig 1).
Such construction provides an engine containing less assembling parts,
having smaller mass to power and overall-dimensions to power ratios, which
are the presumptions for a successful product to be accomplished and for
low cost production/exploitation to be expected. Smaller mass, compared to
the prior art engines, derives from the fact that PAUT engine contains
considerably less assembling parts lacking elements such as: rods,
camshafts, camshaft's driving parts, some valves, large heads.
The very construction of the two-sided piston (fig 3) has more
advantages. Contact area between two-sided piston and cylinder is
considerably larger compared to prior art pistons. Hence, specific
pressures are lower and since the two-sided piston is lubricated under the
pressure, the friction is considerably smaller, the more so as we know that
normal force Fn in the engine center equals zero (fig 2a).
All these results with less wear of the piston and the cylinder. Such a
two-sided piston has considerably smaller mass compared to the prior art
assembly it replaces, consisting of two pistons with their prison-shafts
and two belonging rods, resulting in lessening of linear motion inertial
This construction has still more advantages as compared
to prior art engines such as:
- better controlled cooling of cylinders not being adjoined to each other
- smaller friction inside the engine due to less moving parts
- increasing the capacity of this engine, though considerably, results in
overall dimensions to increase only slightly
- gravity center is posted lower (it is in the engine center)
- better forces configuration in the very engine, while negative forces and
torques nullify each other completely (fig 2b)
- it is possible to dismount pistons and cylinders without entire
dismounting of the engine
- no special tools nor machines were used to produce this engine
- there is less noise due to the design of the two-sided piston
- though the cycle is of two-strokes, the lubrication is performed as if it
The objections on this construction should be as follows:
- due to the compressed construction , the starter should be mounted on the
gear box, but with some endeavour it is possible to mount it on the very
- the force on the output journal of the crankshaft (fig 2a) is twice
compared to the one at prior art engines, but this problem becomes
negligible with a proper design of the journal and of the operating shaft
- there is no oil sump at this engine, hence an additional oil-pump is
- since it is a two-stroke cycle engine, the engine cylinders are submited
to higher mechanical and thermical load comparing to four-strike cycle
Prototype 2 - characteristics (technical data):
• Two-stroke engine
• Engine-block measurments with heads mounted 500mm x 440mm x 440mm
• Engine two-sided piston diameter 100 mm
• Compressor two-sided piston diameter 120 mm
• Two-sided piston stroke 88 mm
• Capacity 7000 cm3
• Number of chambers 4(engine) + 4(compressor)
• Number of two-sided pistons 2(engine) + 2(compressor)
• Weight 135 kg
• Power, torque and specific consumption have not been measured as yet.
World smallest V12 engine
Apparently the builder's name is Yesus Wilder and he only used three
materials to build the engine. Stainless steel, aluminum, and bronze.
All credits to him.
Mazda Rotary Dyno Massive 1664HP
This engine has massive HP, WOW Awsome also on braptv.com Mazda Rotary
Queen Street Racing 4rotor GT60 1664HP
Russian Rotary Vane Engine
Rotary Vane Engine proposed to power Russian hybrid car 'ё мобиль'
Rotary Engine (P2)
Demonstration of Rotary Engine, Showing piston movement and control
Music: Beethoven Moonlight Sonata (Laura Sullivan)
The Libralato engine is potentially the best small engine in the world; an
eco-engine for the 21st century. The asymmetrical rotary engine is
exceptionally compact, powerful, efficient, low emissions, low production
and maintenance costs, low vibration and low noise. The engine is ideally
suited for use as an onboard generator for the next generation of Range
Extended Electric Vehicles (REEV) currently being developed by major
manufacturers around the world, but is also suited for a wide range of
mobile generator sets and other small engine applications. For more
details see: www.libralato.co.uk
RX7 Rotary 9000 rpm, engine blows, fire
This is not my video. I found it on an old hard drive I had from 2003,
before the days of youtube. Putting it up so everyone can witness the
abuse this rotary took before it finally gave up the ghost. If you don't
have 10 mins, it pops @ 7:17 and fire chaos begins shortly after.
Radial Air Engine
This is a video of a simple, model oscillating radial air engine I built in
2007. In this video I am running this self-starting engine with an air
The plans for this engine came from McCabe's model engine website
(http://npmccabe.tripod.com/steam.htm). I made a slight modification by
using ball bearings and an outer bearing to make the crankshaft more
stable. The cylinders are steel, and the pistons are brass rod. Each
cylinder has one hole at the end of the bore for the inlet and Exhaust port. The three manifold pieces are
drilled for inlet and Exhaust passage
of the air from the compressor. It is routed as you can see from the
manifold block at the back where the airline comes in. The flywheel was
machined and mounted on a rotary table to mill the spokes. The engine has
very little output power because it runs on less than 10psi air pressure.
This engine was a fun build, but it isn't an efficient style engine.
Experimental Rotary Engines: Model 32
This follow-up to my previous videos summarizes the current design for the
benefit of those that are experimenting with Model 30 based engines. Model
32 is not yet finished but most of the mechanics are in place. It's been
dry run & tested for compression, friction & wear. Performance so far is
superior to Model 30. Completing the control electronics & firmware will
require more time.
Model 32 is similar to Model 30 (previous videos) except that: the rotors
are steel lined with graphite; the vanes pivot (rather than slide); vane
engagement is electronically controlled; seals, accuracy & fit are
improved; parts count & reciprocating masses are reduced; rotor phase angle
is adjustable to provide expansion ratios approaching 30:1; compression
ratios are adequate for burning vegetable/diesel oil using direct fuel
injection; the Lexan cover is replaced by a dimensionally more stable
aluminum reinforced plate glass. Fins will be routed into the exterior body
as needed for cooling. I should finish evaluating Model 32 by fall '07. The
next design (Model 33) inherits much from Model 32, except that it uses 1
rotor & 2 vanes.
The purpose of this open source program is to develop more fuel efficient
ICE's capable of operating on a variety of fuels for the benefit of our
environment, our economy & our future. This material is offered freely in
the hope that it may be useful & inspiring to tinkerers world-wide wishing
to improve Internal Combustion Engine technology. -Dave
Vane Rotary Engine (Scissors Action Engine)
This is the first ever actually WORKING internal combustion engine that
uses vanes in a so called cat-and-mouse motion. It is also known as
scissors action engine/mechanism.
There have been many attempts to create such engine (starting with
Stephenson who created the first steam locomotive), but all of them failed.
There are many challenges that have to be overcome in order to create a
real working engine of this type. To name a few: sealing, thermal
management, stresses in bearings and stresses in the cranking mechanism.
Many computer models do exist, and many nice computer generated animations,
but except for the design featured in this video, none has actually worked.
The only mechanism of this type that have been known to work, are
What is unique in the design shown in the video, apart for the fact that it
works, is its patented cranking mechanism. It is presently the simplest
mechanism capable of generating cat-and-mouse motion of vanes. Thanks to
its internal-external gear arrangement, the stresses in the gears are lower
than those in alternative mechanisms that usually use external-external
gear arrangements with multiple sets of gears.
There are other unique features in this design, to many however to discuss
in greater details here.
I hope you find this video and the engine interesting!
A totally concentric rotary engine
Doing it right takes more space than is available here.
We have available, free, a downloadable 4 page MS Word treatis and the
PowerPoint presentation prepared by MSC, our virtual analysis provider.
MSC is internationally renowned and counts NASA among it's clients.