KR950014403B1 - Rotary valve of internal combustion engine - Google Patents

Abstract

The internal combustion engine having a simplified structure without the suction/exhaust valve system, has a timing gear driven by a crank mechanism for periodically rotating the cylindrical rotary valve. The engine comprises a connecting rod(4) between the pin(14) and piston(3) for connecting the piston having the compression rings(16a, 16b) and oil ring(17) in the cylinder(1); two suction ports(6a, 6b) and two exhaust ports(5a, 5b) on the upper cylinder; two suction manifolds(12a, 12b) and two exhaust manifolds(11a, 11b) at the side of the cylinder head(10); ignition plugs(13a, 13b) being symmetrically arranged; two-stepped cylindrical rotary valve(8) provided in the cylinder head; suction/exhaust holes(9a)(9b) symmetrically arranged on the periphery of the rotary valve; timing gear(9) for rotating the rotary valve.

Description

Internal combustion engine of rotary valve

1 is an exploded perspective view of a rotary internal combustion engine according to the present invention.

2 is a front sectional view in which the internal combustion engine is assembled.

3 is a view showing a cylinder head and a rotary valve as another embodiment of the present invention.

The present invention relates to an internal combustion engine of a rotary valve, and in detail, it is a timing gear that is connected and driven by the rotation of a crank. It is a gusset about an internal combustion engine that allows the exhaust cycle to be carried out accurately and efficiently.

In a conventional internal combustion engine, since a reciprocating valve for intake and exhaust is periodically operated by rotating a cam addressed by the rotation of the crank, it is composed of a large number of parts, and thus, there is a great difficulty in manufacturing the same. By installing a valve guide to allow the valve to reciprocate precisely according to the direction of operation, the engine body becomes larger, and in particular, the intake and exhaust valves and their components weigh heavily on the vehicle itself. The valve head prevents the flow of gas due to the above-mentioned length of the valve, which reduces the intake / exhaust efficiency and volumetric efficiency, as well as the inflow and outflow of the mixer due to the interference effect between the intake and exhaust, and the ignition device is normally installed one by one. In addition to the occurrence of combustion, there was a problem that causes a decrease in output.

On the other hand, in order to improve the problems of the conventional reciprocating internal combustion engine as described above, the present inventors have already filed an application for the internal combustion engine that can rotate the valve in the cylinder head (notification number, 90-1472). That is, the internal combustion engine has a structure in which an exhaust port and an intake port are installed in a cylinder head of a reciprocating internal combustion engine in which a piston is installed in a cylinder, and a valve having one intake / exhaust hole is connected to the upper and outer sides of the cylinder head. It is made to rotate by the installed timing gear to perform the fuel intake and exhaust of the combustion gas. By such a configuration, the valve and the components installed in the conventional internal combustion engine can be omitted, resulting in a lighter engine. On the other hand, due to the high temperature and high pressure in the cylinder during the explosion stroke, the valve rotating inside the cylinder head does not rotate smoothly, which causes a disadvantage in the mechanism such as a timing gear installed on the upper side.

Therefore, the present invention is to improve the problems with the conventional internal combustion engine as described above, a rotary valve is provided between the side of the cylinder head and the upper side of the cylinder, the skirt of the rotary valve is installed on the outer wall of the cylinder, The rotary valve is driven to the lower side of the skirt by a timing gear as well as two intake and exhaust pipes are provided at the side of the cylinder head, and two ignition plugs are provided at the cylinder head, thereby simplifying the internal combustion engine. The structure allows smooth strokes (cycles) in the cylinders, and eliminates the need for complicated valve systems mounted on conventional internal combustion engines, significantly reducing the complexity of internal combustion engines, and rotating valves generated during explosion strokes. It prevents friction between the cylinder head and cylinder head, and the rotary valve operates smoothly. Is to minimize the flow resistance and to maximize the output of the engine according to the increase of the intake and exhaust efficiency, in particular to provide an internal combustion engine that minimizes the consumption of fuel caused by the weight of the internal combustion engine, it is an object.

EMBODIMENT OF THE INVENTION Hereinafter, the Example of this invention is described in detail based on an accompanying drawing. The piston 3, in which the compression rings 16a, 16b and the oil ring 17 are installed around the cylinder 1, is connected by a connecting rod 4 between the pin 14 and the crank 15. In the internal combustion engine, two inlet ports 6a, 6b and exhaust ports 5a, 5b are formed on the side surfaces of the cylinder, respectively, and two inlet pipes 12a are provided on the side surfaces of the cylinder head 10, respectively. 12b and an exhaust pipe 1la (1lb), and two spark plugs 13a and 13b are installed symmetrically with respect to a center point connected to the center line of one side of the intake and exhaust pipes, and the cylinder 1 A two-stage cylindrical rotary valve 8 is installed inside the cylinder head 10 installed at the upper side of the cylinder, and two intake / exhaust holes 9a and 9b are symmetrically formed at one peripheral edge of the rotary valve. The gear formed in the skirt portion below the rotary valve 8 is engaged with the timing gear 7 so that the rotary valve 8 rotates by the rotation of the timing gear. In the figure, reference numeral `` 2 '' in the figure refers to the cooling water (re) passage, "18a" and "18b" are inner compression rings of the rotary valve, and "19a" and "19b" 三Outer compression ring.

Referring to the operation and effects of the internal combustion engine of the present invention having the configuration as described above are as follows.

When the piston 3 descends from the top dead center to the bottom dead center with the start of the vehicle, the timing valve 7 linked to the power transmission means such as a chain or a belt rotates as the crankshaft rotates, thereby rotating the rotary valve 8. When the intake / exhaust holes 9a and 9b formed in the rotary valve 8 reach the positions of the intake pipes 12a and 12b, at the same time, the intake ports 6a and 6b of the cylinder 1 are rotated. In the same position as above, the mixer is introduced into the cylinder 1 to perform the suction stroke. As the piston rises at the bottom dead center by the reciprocating motion of the piston 3, the rotary valve 8 moves to the intake pipe and the intake air. It prevents the flow of gas past the position of the hole, and forms a compression stroke in the closed combustion chamber. At the end of the compression stroke, the piston 3 reaches a top dead center, and the two spark plugs 13a and 13b The piece is sparked at the same time, causing a spark to explode (3) is lowered to the bottom dead center. At this time, since the intake / exhaust holes 9a and 9b are formed symmetrically, the pressure received by the rotary valve 8 is equal, and the piston rotates when it reaches the bottom dead center. As the intake / exhaust hole of the valve 8 reaches the position of the exhaust pipe 1la (1lb) and the exhaust port 5a, 5b of the cylinder 1, the combustion gas is discharged by the rise of the piston 3, and the exhaust gas is exhausted. The cycle is completed and one cycle is completed, and the above operation is repeated and the engine output is obtained. In particular, in such a cycle, the piston 3 and the crankshaft are two turns (reciprocating), but the rotary valve completes one cycle by 2/1 rotation 180, so that the rotation is performed at low speed as well as at high speed. The intake / exhaust stroke can be made precisely without difficulty in the valve 8, and the flow resistance of the mixed gas is removed in the combustion chamber as in the prior art, and the intake / exhaust efficiency is excellent.

On the other hand, the four inner and outer compression rings 18a, 18b and 19a and 19b mounted on the periphery of the rotary valve 8 maintain airtightness during compression and explosion stroke in the cylinder.

On the other hand, Figure 3 is another embodiment of the present invention, and includes an intake port 6a, 6b, 6c (not shown) and an exhaust port 5a, 5b, 5c (not shown), and an intake pipe 12a ( 12b) (12c) and exhaust pipe (1la) (1lb) (11c) are each installed at intervals of 120 degrees around the rotational shaft, so that the rotary valve rotates one third in four strokes (one cycle) of the piston (3). In this case, three ignition plugs 13d, 13b, and 13c may be installed, and when the piston completes three cycles, the rotary valve makes one revolution, thereby remarkable frictional heat due to rotation. Can be reduced, and the intake / exhaust efficiency can be further improved.

As described above, according to the internal combustion engine of the rotary valve of the present invention, the productivity of the internal combustion engine can be improved by significantly reducing the complexity of the internal combustion engine without the need for a valve system for opening and closing the intake / exhaust pipe, and the efficiency of the intake / exhaust air is increased. Excellent, there is an effect that can maximize the output by lightening the engine.

Claims (1)

In the cylinder 1, a piston 3, in which the compression rings 16a, 16b and the oil ring 17 are circumferentially installed, is connected by a connecting rod 4 between the pin 14 and the crank 15. In the internal combustion engine, two inlet ports 6a, 6b and exhaust ports 5a, 5b are formed on the side surfaces of the cylinder, respectively, and two inlet pipes 12a are provided on the side surfaces of the cylinder head 10, respectively. 12b and the exhaust pipe 1la and 1lb are installed, and two spark plugs 13a and 13b are installed symmetrically with respect to the center of the connection line with the center line on one side of the intake and exhaust pipes, and the cylinder 1 A two-stage cylindrical rotary valve 8 is provided inside the cylinder head 10 provided above the upper side of the cylinder, and two intake / exhaust holes 9a and 9b are symmetrically formed at the periphery of the rotary valve. The gear formed in the skirt portion below the rotary valve 8 is engaged with the timing gear 7 so that the rotary valve 8 rotates by the rotation of the timing gear. Butterfly valve of the internal combustion engine, characterized by.

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