WO2018147819A1

WO2018147819A1 - Internally compressed two stroke environmentally friendly engine

Info

Publication number: WO2018147819A1
Application number: PCT/TR2017/000048
Authority: WO
Inventors: Kemal KARATEKIN
Original assignee: Karatekin Kemal
Priority date: 2017-02-10
Filing date: 2017-05-05
Publication date: 2018-08-16
Also published as: TR201702012A2

Abstract

The product of the invention relates to an environmentally friendly two-stroke internal compression engine which reduces emission values while increasing efficiency in two stroke gasoline and diesel applications.

Description

INTERNALLY COMPRESSED TWO STROKE ENVIRONMENTALLY FRIENDLY

ENGINE

TECHNICAL FIELD

The product of the invention relates to an environmentally friendly two stroke internal compression engine which reduces emission values while increasing efficiency in two stroke gasoline and diesel applications.

STATE OF THE ART

2015/16601 provides an internal combustion engine, wherein the engine is a 2- stroke internal combustion engine comprising two opposing cylinders, each embodying two opposing pistons, and at least one exhaust outlet and at least one air inlet aperture, and asymmetrically arranged bearings, and a crank shaft with scotch yoke mechanisms for moving the bearings from the pistons. Pistons in each cylinder operate to open the exhaust outlet aperture or apertures before the air inlet aperture or apertures, and to close the exhaust outlet aperture or apertures before the air inlet aperture or apertures.

2015/02121 is related to a six stroke internal combustion engine, wherein the six- stroke internal combustion engine with two free strokes taking place in the conventional four-stroke engine cycle with the help of fresh air in order for the engine to operate cooler, improve fuel economy and to regulate pollutant emissions. Within a cycle taking place in the engine, the intake and exhaust valves open and close twice. While a cycle is completed at 4n rad crank angle, a cycle in the engine mentioned in the invention is completed at 6n rad crank angle. 2010/09575 is a crosshead type two-stroke uniflow large diesel engine, the crosshead type uniflow two-stroke large diesel engine comprising multiple cylinders involving at least one exhaust valve per cylinder and also one or more injectors per cylinder. Fuel injection is performed under the influence of a source of high pressure fluid. Potential energy is accumulated by compression in a volume. Electro-hydrolic valves control the fuel injection that is primarily driven by energy accumulated in the volume of high pressure. The engine has a camshaft for actuation of the exhaust valves. Hydraulic piston pumps are driven by the cams on the camshaft. Hydraulic actuators move the exhaust valves in the opening direction with hydraulic fluid received via conduits from the hydraulic piston pumps.

5 2008/07677 is a large two-stroke diesel engine, the large two-stroke diesel engine having at least one cylinder, the combustion chamber of which has an outlet aperture that can be controlled by an outlet valve that can be actuated by means of an actuating device containing an advancing device and a restoring device, and on the cylinder head of which cylinder there is mounted a valve housing which io contains an outlet conduit which adjoins the outlet aperture of the combustion chamber and a guide bush, which reaches through the upper wall of the outlet conduit, wherein the restoring device has a piston which is attached to the valve shaft and a working chamber which is bounded by the piston and to which compressed air can be admitted and which is sealed off, from an annular gap i s which is present between those guide faces of the guide bush and valve shaft which face towards one another, and communicates with the outlet conduit and to which oil can be fed, by a sealing device which is arranged in the region of the upper end, which is remote from the outlet conduit, of the annular gap and which sealing device has at least one sealing ring. It is a characteristic of the engine that 0 there is provided, above that sealing ring of the sealing device which faces towards the outlet conduit, an oil reservoir to which pressure can be applied by oil at the upper side and the oil charge of which is present at the upper side, which faces away from the annular gap of the saif sealing ring and is constantly flooded from above with the oil present in the reservoir.

5

Although a two-stroke internal compression engine is not present, there are similar two-stroke engines; however, the emission values are much above the European norms. 0

DESCRIPTION OF THE INVENTION The present invention relates to an environmentally friendly two-stroke internal compression engine which is developed to eliminate the aforementioned disadvantages and to bring new advantages to the relevant technical field.

The engine of the invention decreases environmentally hazardous gas release by reducing high emission values in two-stroke engines and is more efficient due to having less weight and more engine power compared to four-stroke engines. Two- stroke engines belonging to the state of the art do not have a wide range of application areas as they reveal high emission values. Thanks to the engine of the invention, two-stroke engines will find use in many fields, and will even replace four-stroke engines.

Unlike other two-stroke engines, the cylinder head has two camshafts.

There is a fixed piston in the cylinder.

It is actuated through a moveable tubular piston.

Opening-closing gaps of the exhaust valves on the cylinder head can be adjusted at very wide angles.

Camshaft adjustments can be made from the timing belt with an electric engine.

There is a valve on the tubular piston.

There are fresh air guide flanks on the tubular piston.

Air flow into the compressor within the engine occurs by flowing through inlet valves via conduits on a fixed piston.

In this engine, fuel is injected directly into the engine.

There is not an aperture for air inlet or exhaust outlet on the cylinder block unlike other two-stroke engines.

In this engine, fuel-air mixture does not flow through the crankcase; thereby there is normal oil in the crankcase.

An engine with less weight, with more power can be produced. This makes the engine so important for transport vehicles.

In the engine of the invention, more torque is produced as combustion occurs at any rotational speed.

The tubular piston compresses the air between itself and the fixed piston while going down to the zero position, thereby the knocking of the piston at the lower zero point decreases and the loss of energy is recovered by the filling of compressed air into the upper cylinder.

Local overheating in the engine is prevented as fresh air flows directly into the cylinder through the piston.

5 Because the closing angle of the exhaust valves can be adjusted very widely, the ideal fuel mixture is provided at low rotational speeds by closing them late. Thus, there is no need for using a throttle in this engine. At low rotational speeds, loss of energy resulting from vacuum affect occurring in the engine due to the closing throttle is prevented. Therefore, the efficiency of the engine is higher.

10

It can be used in any field where gasoline and diesel engines are utilized. Drawings

Embodiments of the present invention summarized above and described in more i s detail below can be understood by referring to the enclosed illustrated drawings of the invention. However, it has to be stated that the enclosed drawings illustrate only the typical embodiments of the invention and thereby should not be understood as a limitation to the scope of the invention as they may allow equally efficient embodiments. 0 Figure 1 - cross-sectional view of the assembled engine,

In order to render easy understanding, identical reference numbers are used when applicable to indicate identical elements in the drawings. The figures are not scaled and may have been simplified for clarity. It is contemplated that elements 5 and characteristics of an embodiment can be included usefully in other embodiments without and further explanation.

Description of the Details in the Drawings

1 - Timing belt tension engine,

0 2- Tension Reel,

3- Trigger Pulley,

4- Camshaft,

5- Injector, 6- Exhaust Valves,

7- Spark Plug,

8- Timing Belt Tension Engine,

9- Guiding Flanks,

10- Timing Belt,

1 1 - Cylinder Air Inlet Valve,

12- Compressor Air Inlet Valve,

13- Fixed Piston,

14- Intermediate Cylinder,

15- Fixed Piston Air Inlet Conduit,

16- Valve Spring,

17- Tubular Piston Travers,

18- Piston Pin,

19- Lower Block,

20- Crank Pulley,

21- Piston Rod,

22- Crank,

23- Crank Shaft Journal,

24- Tubular Piston,

25- Tubular Piston Travers,

26- Crank Sensor,

27- Sensor Detection Plate,

DETAILED DESCRIPTION OF INVENTION

In this detailed description, preferred alternatives of an environmentally friendly two-stroke internal compression engine embodiment are described only for the purpose of better understanding and without inserting any restrictive effects.

Timing belt tension engine (1 ): Adjusts opening and closing angles according to the rotational speed of the exhaust valves.

Tension Reel (2): Provides connection of the tension engine to the timing belt. Timing Belt Pulley (3): Provides connection of the crankshaft to the timing belt. Crankshaft (4): Being incited by the timing belt, ensures the opening and closing of the exhaust valves.

Injector (5): Ensures fuel spray into the cylinder.

Exaust Valves (6): Ensures the discharge of the exhaust gas.

5 Spark Plug (7): Ensures the sparkling of the fuel-air mixture compressed in the cylinder.

Timing Belt Tension Engine (8): Adjusts opening and closing angles according to the rotational speed of exhaust valves.

Guiding Flanks (9): Ensures the formation of turbulence by the air flowing into the l o cylinder through the cylinder air inlet valve.

Timing Belt (10): Rotates the camshafts by being incited by the crank pulley.

Cylinder Air Inlet Valve (11 ): Ensure the flow of fresh air compressed in the inner compressor to the upper cylinder.

Compressor Air Inlet Valve (12): Ensures the flow of fresh air from outside into the

1 5 compressor cylinder.

Tubular Piston (13): Transmits kinetic energy formed by actuation after compressing the air-fuel mixture in the upper cylinder to the piston rod and ensures fresh air suction in the inside and transfers it into the upper cylinder.

Intermediate Cylinder (14): Provides connection of the upper cylinder to the lower 0 block.

Fixed Piston Air Inlet Conduit (15): Ensures the transfer of fresh air from outside into the fixed piston air inlet valves.

Valve Spring (16): Ensures closed position of the cylinder air inlet valve during actuation.

5 Tubular Piston Traverse (17): Provides connection of the tubular piston (24) to the piston rod and sustains the valve spring.

Piston Pin (18): Provides connection of the tubular piston traverse to the piston rod.

Lower Block (19): Sustains the crank shaft journals and the intermediate cylinder. 0 Crack Pulley (20): Ensure induction from the crank shaft to the timing belt.

Piston Rod (21 ): Conveys the kinetic energy it receives from the tubular piston (24) via the traverse to the crank shaft.

Crank (22); Transmits kinetic energy transferred to itself with the piston rod. Crank Shaft Journal (23): Ensures the bearing of the crank shaft by the lower casing.

Tubular Piston (24): Transmits kinetic energy formed by actuation after compressing the air-fuel mixture in the upper cylinder to the piston rod and 5 ensures fresh air suction in the inside and transfer into the upper cylinder.

Tubular Piston Traverse (25): Provides connection of the tubular piston (24) to the piston rod and sustains the valve spring.

Crack Sensor (26): Determines the reference of the crank rotational angle and thus ensures the determination of the opening closing angles of the exhaust i o valves, fuel injection angle and sparkling angle via the tension engine.

Sensor Detection Plate (27): Ensures the detection of the crank reference by the sensor.

As can be seen in Figure 1 , the fixed piston (13) is connected on the lower casing, i s The intermediate cylinder (14) is connected on the base of the fixed piston (13).

And the upper cylinder is connected on the intermediate cylinder (14). By connecting the cylinder head on this, a cylinder, block and head assembly is formed.

20 The crank shaft is connected to the lower casing via the journals (23). And the piston rods (21 ) are connected to the crank.

The fixed piston (13) connection traverse is connected to the piston rod (21 ) via the piston pin by crossing over the fixed piston (13). The cylinder air inlet valve 25 (11 ) is connected to the tubular piston traverse (17) and the centre of the guiding flanks (9) via the valve spring (16) by crossing through the fixed piston (13) aperture.

The cylinder air inlet valves (11 ) are connected on the fixed piston (13) for air inlet. 30 Two camshafts are connected to the cylinder head. The exhaust valves (6) are connected to the valve seats on the cylinder head. The fuel injector is connected to the injector seats present on the cylinder head. The spark plug (7) is connected to the seats present on the cylinder head. The tension reel (2) is connected on the three timing belt tension engine (8) and placed as in Figure 1 .

The timing belt (10) is connected between the crank pulley (20), camshaft pulleys and tension reels (2) as in the figure.

The sensor detection plate (27) is connected on the back of the crack shaft.

The crank sensor (26) is connected on the back of the lower casing so that the detection plate (27) can detect.

Operating Principle: Until the tubular piston (24) reaches the upper zero point from its initial movement from the lower zero point, air inlet is let into the compressor via the cylinder air inlet valve (11 ) through the conduits present on the fixed piston (13). During the movement of the tubular piston (24) from the upper zero point to the lower zero point, air compressed between the tubular piston (24) and the fixed piston (13) enters into the upper cylinder from the cylinder air inlet valve (11 ) by overcoming the spring force closing this valve (11 ). Fresh air which enters the upper cylinder from the valve (11 ) with a compression fills in the cylinder by forming turbulence in the upper cylinder via the guiding flanks (9). Fuel is sprayed by the injector (5) into the compressed air while the tubular piston (24) rises up back to the upper zero point. When the tubular piston (24) reaches the upper zero point, the spark plug (7) ignites the fuel-air mixture. The tubular piston (24) is forced back to the lower zero point by pressure resulting from combustion. Taking the upper zero point as a reference, exhaust gas resulting from combustion is expelled via the camshaft (4) through the exhaust valves (6) when the crank (22) turns 120-150 degrees. Meanwhile, fresh air which is compressed in the compressor opens the inlet valves (11 ) by overcoming the spring force and enters into the upper cylinder by swiveling by way of the guiding flanks. The exhaust valves (6) stay open until the crank (22) rotates by 225-270 degrees from the reference point ensuring letting the exhaust gas leave the upper cylinder fully and subsequently the valves (6) close. While the tubular piston (24) rises back up to the upper zero point, fuel is pulverized again by the injector (5), air is compressed, the spark plug is sparkled (7) when the piston (24) reaches the upper zero point and thus the cycle continues.

The opening of the exhaust valves (6) at 120-150 degrees and the closing of the same at 225-270 as mentioned above is ensured by the timing belt tension engine (8), thereby the engine is actuated with minimum emission and ideal fuel-air mixture in idle mode and full throttle.

Claims

An environmentally friendly two-stroke internal compression engine, characterized in that; it comprises a Timing belt tension engine (1 ), a Tension Reel

(2), a Timing Belt Pulley

(3), a Camshaft

(4), an Injector

(5), Exhaust Valves

(6), a Spark Plug

(7), a Timing Belt Tension Engine

(8), Guiding Flanks

(9), a Timing Belt

(10), a Cylinder Air Inlet Valve

(11 ), a Compressor Air Inlet Valve

(12), a Fixed Piston

(13), an Intermediate Cylinder

(14) , a Fixed Piston Air Inlet Conduit (15), a Valve Spring (16), a Tubular Piston Traverse (17), a Piston Pin (18), a Lower Block (19), a Crank Pulley (20), a Piston Rod (21 ), a Crank (22), a Crank Shaft Journal (23), a Tubular Piston (24), a Tubular Piston Traverse (25), a Crank Sensor (26), a Sensor Detection Plate (27).

An environmentally friendly two-stroke internal compression engine according to claim 1 , characterized in that; it comprises a Fixed Piston (13) which transmits kinetic energy formed by actuation after compressing the air-fuel mixture in the upper cylinder to the piston rod and ensures fresh air suction in the inside and transfer into the upper cylinder.

An environmentally friendly two-stroke internal compression engine according to claim 1 , characterized in that; it comprises a Tubular Piston (24) which transmits the kinetic energy formed by actuation after compressing the air-fuel mixture in the upper cylinder to the piston rod and ensures fresh air suction in the inside and transfer into the upper cylinder.

An environmentally friendly two-stroke internal compression engine according to claim 1 , characterized in that; it comprises a Fixed Piston Air Inlet Duct

(15) which ensures the transfer of fresh air from outside into the fixed piston air inlet valves.

An environmentally friendly two-stroke internal compression engine according to claim 1 , characterized in that; it comprises Guiding Flanks (9) which ensures formation of turbulence by the air flowing into the cylinder through the cylinder air inlet valve forms turbulence.

6. An environmentally friendly two-stroke internal compression engine according to claim 1 , characterized in that; it comprises a tubular piston (17) which connects the Tubular Piston Traverse (24) to the piston rod and sustains the valve spring.

7. An environmentally friendly two-stroke internal compression engine according to claim 1 , characterized in that; it comprises a timing bet tension engine (8) ensuring actuation with minimum emission and ideal fuel-air mixture in idle mode and full throttle, and adjusting the opening of the exhaust valves (6) at 120-150 degrees and the closing of the same at 225-270 degrees according to the rotation speed.