| Description:
The system developed by a Polish inventor offers a simple,
sinusoidal translation between rotary and linear motion with a
minimum of parts. The mechanism allows the use of variable output
ratios incorporated within the assembly itself. Some of the
advantages are reduced physical size, weight and manufacturing
costs. The basic USZ System (Polish acronym for Universal Sinusoidal
Feedback System) consists of a mechanism for the direct conversion
of to-and-fro, backward and circular motion of two masses to
unidirectional circular motion. At present, this function is
commonly performed by the crankshaft system with connecting rods.
The main difference between these two methods is that in the
crankshaft system the vector of force is always perpendicular,
whereas in the USZ System the vector of force is always parallel to
the axis of rotation. This parallel vector of force can be
decomposed into two component vectors in opposite directions, which
are tangent to the circle radii; this yields continuous and
direct-acting unidirectional torque.
The USZ System uses a
method for the direct conversion of bi-directional rectilinear
motion of the same physical mass to unidirectional circular motion
(and vice-versa)
The elimination of cranking and the connecting
rod considerably simplifies the design and overcomes the drawbacks
of the crankshaft system. In addition, it brings new advantages that
have hitherto been unattainable.
The principle of the crankshaft
system is based on the definition of windlass kinematics, and as
such the inherent disadvantages, in spite of constant modernisation
of the system, have been impossible to overcome for over a hundred
years. The stroke of a piston mass in the crankshaft system always
depends on the double length of the crankshaft radius, whereas in
the USZ System, the stroke depends on the slope of the function in
relation to its circular axis.
Technical Advantages of the
USZ System:
1. Simple construction, fluent operation, no
oscillations or vibrations.
2. Multiplied capacity / number of
working cycles per single rotation.
3. Direct reduction of
rotation speed or increase in the number of strokes in relation to
the number of rotations.
4. Reduced physical size and weight
5. Aids the use of non-metallic pistons / cylinders
Innovative Aspects:
The offered various problems and
compromises associated with existing technology - including removing
piston side thrust, enabling the possible use of ceramic (or other
non-metallic) pistons / cylinders, and omission of moving sealing
devices.
The innovation of the USZ System consists in the
substitution of the crankshaft and connecting rod function with a
periodical, closed-shape and distorted trigonometric function. The
principle of this system is founded on basic physical and
mathematical laws, which state that the graphic representation of a
simple oscillating motion is the sinusoidal curve, and similarly
that the graphic representation of the point moving along the circle
is also the sinusoidal curve. The USZ System was developed on the
basis of the reciprocity of these two definitions.
The spatial
motion of the mass of the piston performs numerous functions:
1.
Eliminates vibrations and oscillations.
2. Stores the kinetic
energy of the circular motion.
3. Reduces rotation speed (in
engines) or increases strokes number (in pumps).
4. Enables
pumps and compressors to operate without the use of valves.
5.
In pumps and compressors, changing the direction of rotation causes
a change in the mode of operation, i.e. from suction to compression.
6. In four-stroke engines, eliminates the timing gear.
7.
Facilitates aspiration and compression of air in the engine
combustion (i.e. turbo charging) without the use of valves.
8.
In two-stroke engines, forces the mixture through to the combustion
chamber.
The USZ System allows for fluent change in the
compression ratio during engine operation; this is impossible in the
crankshaft or Wankel engine systems.
Main Advantages:
1.
Simple construction, easy assembly and dismantling.
2. Very few
mobile parts, lightweight.
3. Easy cooling and lubrication.
4. Tight seals on the whole system.
5. Multipurpose features
of the USZ system, for common and widespread use as well as various
types of specialist applications.
Use of the USZ System
instead of the crankshaft system gives economy of fuel, raw
materials and energy, and benefits.
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