WO2013049898A1

WO2013049898A1 - Rotary-piston engine

Info

Publication number: WO2013049898A1
Application number: PCT/BA2011/000005
Authority: WO
Inventors: Dražen GRABOVAC
Original assignee: Grabovac Drazen
Priority date: 2011-10-06
Filing date: 2011-10-21
Publication date: 2013-04-11

Abstract

The engine with the circular (rotation) movement of the piston 2, where the piston 2 is shaped as a cross, has four branches where is located combustion chamber of mixture in the piston 9. Piston is directly connected to the shaft (crankshaft) 3 and there is no additional transmission (reduction) between the piston 2 and the shaft (crankshaft) 3. When there is an accordance of areas 9 and 10 which then make a rectangle rotated so that the piston moves downward when the combustion of mixture occurs and it is due to the cross-shaped piston 2 repeated four times in one rotation of the shaft (crankshaft) of 360 degrees.

Description

ROTARY-PISTON ENGINE

1) TECHNICAL SCOPE TO WHICH THE INVENTION RELATES

This invention refers to the engine with a rotating (circular) movement of the piston, and according to the international classification (IPC) is classified as F01C - rotary-piston or oscillating-piston machines or engines.

2) TECHNICAL ISSUE

(for the solution claimed )

Former version of a rotary-piston engine was not fully improved due to difficulties in solving the problem of sealing between the piston and engine cylinder. Therefore former engines with a circular (rotating) piston are not often used in industry.

3) TECHNICAL CONDITION

(presentation and analysis of known solutions of the defined technical problem)

Contemporary internal combustion engines that are most commonly used in automotive industry operate by moving the piston rectilinearly, and the shape of the shaft that is connected to the piston is designed to transfer rectilinear piston motion into rotating movement of the shaft. Therefore, such engine has smaller number of RPM (revolutions per minute) and its power cannot be completely utilized. Existing version of an engine with rotating piston "Wankel engine" is not completely improved, sealing between piston and cylinder cannot be improved due to piston shape and its movement.

4) PRESENTING THE ESSENCE OF THE INVENTION

(so that the technical problem and its solution are understandable, and specifying the technical novelty of the invention compared to former solutions)

This invention aims to increase power of vehicles and machines that demand higher power and greater number of RPM. This engine is with rotating piston and therefore can accomplish far greater number of RPM and higher power compared to the classical engines that transform rectilinear into rotating movement and which are mostly used. Working operation of an existing engine with rotating piston "Wankel engine" cannot be perfected due to symmetric movement of a piston caused by planetary placed gears between piston and shaft (crankshaft) and therefore it is not possible to refine sealing between cylinder and piston. Working operation of this engine (invention) is far easier than of those, piston is directly connected to the shaft (crankshaft) and has no additional reductions or gears, piston is moving circular and uniformly. Due to such position of the piston there are no additional obstacles or interferences in its performance. The piston, shaped as a cross, has four branches where are carried out injection of air, fuel, ignition of mixture, exhaustion of burnt gasses, meaning that in one rotation of the shaft (crankshaft) for 360 degrees that cycle repeats four times in the cylinder, which means that one cylinder of this engine in one rotation of shaft (crankshaft) works as four cylinders of a classical engine.

5) BRIEF SKETCH DESCRIPTION

Supplemented sketches included in description which form the part of invention description illustrate so far considered the best way to construct the invention and assist at explaining basic principles of invention.

-Sketch 1 is a side view of mounted engine constructed in accordance with invention description.

Sketch 2 is piston and its parts, shaft (crankshaft)

Sketch 3 is cylinder and its parts

Items details:

1) Cylinder

2) Piston

3) Shaft (crankshaft)

4) Injector (high pressure)

5) Spark

6) Turbo compressor

7) Exhaust

8) Gasket (piston rings)

9) Combustion chamber in piston

10) Combustion chamber in cylinder

11) Flap that closes combustion chamber at fuel injection

12) Flap that closes combustion chamber after ignition

6) DETAILED DESCRIPTION OF AT LEAST ONE WAY OF INVENTION ACCOMPLISHMENT

I will now go into details of this invention, whose example is illustrated with supplied sketches.

Sketch 1 is construction sketch where item positions can be recognized, where is presented that piston 2 has a circular (rotating) movement and that is directly connected to the shaft 3. Starting of the engine consists of four phases: injection of clean air, injection of fuel, ignition of mixture and exhaustion of burnt gasses. First phase of injection of clean air is when combustion chamber in piston 9 is in position 1 where is located injector of turbo compressor 6, then occurs injection of clean air under pressure and piston continues its movement towards position 2. Second phase, at piston 2 arrival in front of the combustion chamber in cylinder 10 flap 11 closes lower space 10 and occurs injection of fuel under pressure. Third phase, when combustion chamber of piston 9 and combustion chamber of cylinder 10 -' are matched in same position, then occurs ignition of mixture in chambers 9 and 10 that are under pressure and ignition is performed by spark 5. When chamber 9 and 10 are matched the space is shaped ^xas rectangle that is rotated so when mixture is ignited the piston moves toward position 3. Injection of air and fuel is performed under pressure to maximize utilization of the mixture so sealing between piston 2 and cylinder 1 is achieved with gaskets (piston rings)8 that are placed in pistons, in grooves (rings bearing) are placed springs so gaskets (piston rings)8 have repressing effect on cylinder 1. Gaskets (piston rings)8 are designed to perfectly fit with cylinder wall 1 and therefore can sustain high pressure. Fourth phase, when the mixture is ignited piston 2 goes to position 3, in chamber 9 there are burnt gasses that are with centrifugal force caused by circular transmission of piston 2 hurled through exhaust 7. This is the description of movement of one branch of piston through four phases. Since piston is shaped as a cross it has four branches, meaning that one rotation of the shaft (crankshaft) 3 for 360 degrees and those phases are repeated four times in one cylinder 1. That would mean that one cylinder <of such engine in one rotation of the shaft (crankshaft) for 360 degrees works as four cylinders of classical engine with rectilinear piston movement, meaning that four cylinders of such cycling engine would replace 16 cylinders of engine with rectilinear piston movement. Due to such working conditions it can achieve high number of rotations and therefore great power.

7) APPLIANCE OF INVENTION

This invention enables vehicles to have high number of PM, great power, small dimensions and great durability of engine. Due to its working conditions wearing of its parts is reduced, so vehicles with this invention would be powerful, fast, light weighted and would have longer lifetime.

Signature

End of translation -

By affixing my seal and stamp I hereby certify that this is a true translation of the original document written in

Serbian/Bosnian/Croatian language.

Claims

Beginning of translation -

PATENT CLAIMS

internal combustion engines with fuel, that are most commonly used in automotive industry, operate by moving the piston rectilinearly. The shape of a shaft that is connected to the piston is designed to transfer linear piston motion into rotary movement of the shaft. It is indicated that at this engine piston is shaped as a cross, it has four branches where are carried out injection cycle of air, fuel, ignition, exhaustion, which means that it repeats four times in one rotation of the shaft (crankshaft) of 360 degrees in the cylinder, meaning that one cylinder of this engine (patent) replaces four cylinders of an engine with a rectilinear movement of the piston.

2. Claim number 1 indicates that an engine whose piston moves circularly (rotation), because of such piston movement, allows greater achievement of power, rotation and greater durability of an engine.

3. Claim number 1 indicates that piston is directly connected to the shaft (crankshaft), which enables its free movement and decreased wearing of parts.

Signature: