KR101783750B1 - Solid cam type engine - Google Patents

Abstract

A cylinder liner (12) for an intake and exhaust of a combustion chamber (38), which is located inside the cylinder liner head, and a cylinder liner An inner and outer pistons 32 and 34 that are reciprocated in a linearly reciprocating structure by a combustion process of the combustion chamber 38 and a connecting rod 36 that guides a reciprocating linear motion of the inner piston 32 And the inner and outer pistons 32 and 34 are rotatably mounted on the connecting rod 42. The three-dimensional cam 20 rotatably supports the three-dimensional cam 20 and forms the ice- A guide roller that rotates the stereoscopic cam 20 while moving along the sine groove 22 formed in the stereoscopic cam 20 as it reciprocates linearly in the left and right direction, And a cam housing (26) for outputting the rotation of the rotating shaft (54) The side pistons 32 and 34 perform a linear reciprocating motion in a reciprocating structure so that the vibration is canceled to reduce the noise caused by the vibration and vibration of the engine and the side pressure is not generated, , The structure is simple, which is advantageous for downsizing, and the manufacturing cost can be reduced.

Description

SOLID CAM TYPE ENGINE}

The present invention relates to a three-dimensional cam-type engine, and more particularly, to a three-dimensional cam-type engine that has no vibration due to a cross-over structure and does not generate a side pressure of a piston,

In general, there is a piston reciprocating engine as a power source for converting heat energy into mechanical energy by using heat energy generated when the combustion gas is expanded in the inside of the engine, among the heat engines that convert thermal energy into mechanical energy.

In the piston reciprocating engine, the reciprocating motion of the piston reciprocating linearly in the cylinder is transmitted to the connecting rod and the crankshaft. At this time, the linear reciprocating motion is converted into rotational motion by the relative movement of the connecting rod and the crankshaft.

However, in such a conventional piston reciprocating engine, since the piston receives a lateral external force by the connecting rod, a side pressure is generated in the cylinder by the lateral external force thereof, and a frictional loss occurs in reciprocating motion of the piston, .

In addition, when the reciprocating motion of the piston causes a lot of vibration, the engine is vigorously trembled during high-speed rotation, resulting in a large amount of vibration noise.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a three-dimensional cam-type engine capable of reducing vibration caused by piston motion while reducing friction loss and wear by eliminating a side pressure generated in reciprocating motion of the piston.

It is another object of the present invention to provide a three-dimensional cam-type engine capable of improving the efficiency and fuel economy while simplifying the structure as compared with the conventional piston reciprocating engine.

The cylinder liner 12 for the intake and exhaust of the combustion chamber 38 and the cylinder liner 12 for the intake and exhaust of the combustion chamber 38 are disposed inside the cylinder liner head, Inner and outer pistons 32 and 34 that are located inside the combustion chamber 38 and reciprocate linearly in a structure that is crossed and opposed by the combustion process of the combustion chamber 38; A solid cam 20 rotatably installed to form a groove 22 surrounded by the ice to form a curve having a substantially planar sieve and inner and outer pistons 32, A guide roller 40a and 40b for rotating the stereoscopic cam 20 while moving along the sine groove 22 formed in the stereoscopic cam 20 according to the movement of the stereoscopic cam 20, And a cam housing (26) for outputting the rotation of the inner piston (32) through a rotary shaft (52) to the rotary shaft (54) Since the body of the guide roller 40a and the bodies of the outer piston 34, the connecting rod 42 and the guide roller 40b have a cross-facing structure in which they move in opposite directions to each other with the combustion chamber 38 therebetween, Is offset.

In the present invention, since the inner piston and the outer piston perform a linear reciprocating motion in a crossing-facing manner, the vibration is canceled, thereby reducing noise caused by vibration and vibration of the engine.

In addition, since the inner and outer pistons reciprocate in a straight line, the side pressure does not occur and the efficiency and the fuel economy are high. Therefore, the engine oil is not added to the fuel, thereby being eco-friendly.

In addition, since it is not necessary to provide a separate intake and exhaust valve, the structure is simple, which is advantageous for downsizing, and the manufacturing cost is reduced. As the intake and exhaust device is made by vortex, complete combustion and fast combustion are possible.

1 is a perspective view showing a configuration of a three-dimensional cam type engine according to an embodiment of the present invention,
Fig. 2 is a cross-sectional view of Fig. 1,
FIGS. 3 to 13 are diagrams illustrating an internal configuration of a three-dimensional cam type engine according to an embodiment of the present invention;
FIGS. 14A to 14B are views for explaining a rotation configuration of a three-dimensional cam according to an embodiment of the present invention;

Hereinafter, the configuration of a three-dimensional cam type engine according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

Prior to the description, the three-dimensional cam type engine 100 of the present invention has a two-stroke structure, and can be modified to enable the use of multiple kinds of fuel.

1 to 3 illustrate the entire configuration of the stereoscopic-motion engine 100 of the present invention.

The three-dimensional cam type engine 100 of the present invention includes a cylinder head 2 for forming a combustion chamber 38 at both ends thereof and a cylinder liner 12 for the intake and exhaust of the combustion chamber 38, Inner and outer pistons 32 and 34 which are located inside the cylinder liner 12 and linearly reciprocate by a combustion process of the combustion chamber 38 in a crossing manner; A connecting rod 42 for guiding the left and right linear reciprocating motion of the body 34, a three-dimensional cam 20 which is provided so as to be rotatable and which forms a groove 22 which is surrounded by ice to form a curved line in a plane, The outer pistons 32 and 34 linearly reciprocate left and right on the connecting rod 42 so as to move along the sine groove 22 formed in the stereoscopic cam 20 while rotating the stereoscopic cam 20 40a) 40b for outputting the rotational force of the rotating three-dimensional cam 20 to the rotational shaft 54 through the cam gear 52, The configuration comprises a gong 26.

Referring to FIG. 3, the cylinder head 2 forms a combustion chamber 38 for driving the three-dimensional cam type engine 100, and has a structure capable of intake and exhaust necessary for the combustion process.

An ignition plug 10 for burning a mixer (air + fuel) of the combustion chamber 38 can be provided on one side of the combustion chamber 38. When the combustion chamber 38 is compressed by the inner and outer pistons 32 and 34 Causing the mixer to burn.

As a preferred embodiment of the present invention, the three-dimensional cam type engine 100 may be used in a gasoline engine, and may be applied to a diesel engine in which the combustion chamber 38 is spontaneously ignited with a high compression ratio.

When applied to a diesel engine, the spark plug 10 may be replaced with a fuel injector (not shown).

The cylinder head 2 is provided with an intake passage 4 and an exhaust passage 6 on the outer side so that the intake air and the exhaust gas required for the combustion process can be formed. In a preferred embodiment, the intake passage 4 is provided with a reed valve 8 may be provided so as to be able to supply a mixer according to the shape of the combustion chamber 38.

The reed valve 8 is positioned at one end of the intake passage 4 and when the combustion chamber 38 is compressed by the inner and outer pistons 32 and 34 the volume increases as the outer piston 34 moves, And the mixer supplied to the intake passage 4 is introduced into the outside of the outer piston 34 through the reed valve 8.

After the combustion, the outer piston 34 is pushed, and the reed valve 8 is pushed by the pressure to close the mixer. The mixer is supplied into the combustion chamber 38 through the cylinder intake port 14 and the combustion gas is supplied to the exhaust passage 6 Lt; / RTI >

In other words, by applying the reed valve 8 without providing a separate mechanical valve on the outer side of the outer piston 34, a uni-flow scavenging method in which a mechanical configuration is simple and a fixed amount is forcibly supplied to the cylinder .

A cam gear 52 for output is fixed to the outer edge of the rotating cam housing 26 to transmit the rotational force of the three-dimensional cam 20 to the rotary shaft 54.

In addition, a magnet (not shown) may be attached in place of the cam gear 52 provided in the cam housing 26, and a power generation coil may be inserted outside the cam gear 52 to manufacture a compact engine generator without vibration and high efficiency.

Fig. 4 is a view showing the state in which the cylinder head 2 is detached from the configuration of Fig. 3, in which the inner wall of the combustion chamber 38 in which the inner and outer pistons 32, 34 reciprocate at a high speed is heated at high temperature, The cylinder liner 12 is installed to maintain the heat resistance and wear resistance.

The cylinder liner 12 may be made of cast iron or aluminum depending on the material of the piston.

In the present invention, the cylinder intake port 14 and the cylinder exhaust port 16 are formed on both sides of the cylinder liner 12, and the cylinder intake and exhaust ports 14 and 16 are formed in the combustion chamber 38). The inclined surface 18 is formed so as to be inclined inward.

The mixer that is introduced into the vortex through the cylinder intake port 14 can be rapidly supplied into the combustion chamber 38. As the mixer is rapidly supplied and filled into the combustion chamber 38, the combustion gas is also vortexed through the cylinder exhaust port 16 So that the combustion can be completed completely and the combustion can be performed at the time of the next combustion, which is efficient.

A cam gear 52 for transmitting the rotational force of the three-dimensional cam 20 rotated by the linear reciprocating motion of the inner and outer pistons 32 and 34 to the rotary shaft 54 is provided between the cylinder liner 12 located at both ends And the cam housing 26 and the cam gear 52 are fastened and fixed to each other through a fastening portion 56. [

The outer periphery of the cam housing 26 can be fastened with a plurality of fastening bolts 46 and a fastening pin 48 so as to rotate together with the inner solid cam 20.

5 shows an internal structure in which the cylinder liner 12 and the cam housing 26 are separated from each other. In the present invention, a linear reciprocating structure is formed along the guide shaft of the connecting rod 42 at the position of the combustion chamber 38, An inner piston (32) and an outer piston (34) are provided for movement.

The inner piston 32 and the outer piston 34 form a single body with the connecting rod 42 and the guide roller 40b to reciprocate linearly.

In this linear reciprocating motion, the vibration is canceled by repeating the linear reciprocating motion in the opposite direction crossing each other at the same mass and moving speed. This is because the vibration of the three-dimensional cam type engine 100 is reduced, (100) is also reduced.

As an embodiment of the present invention, the three-dimensional cam type engine 100 has two left and right combustion chambers 38, and a pair of right and left combustion chambers 38 are symmetrically arranged to form one combustion chamber 38.

Therefore, the inner and outer pistons 32 and 34 for combustion of the mixer are also provided on the right and left sides, and between the pair of inner and outer pistons 32 and 34, the inner and outer pistons 32 and 34 A three-dimensional cam 20 rotated by a linear reciprocating motion is provided. As an example, a bearing may be provided so that the three-dimensional cam 20 can be rotated.

Referring to Fig. 6, the three-dimensional cam 20 of the present invention is a cylindrical body having a through-hole 24 formed in a deep portion thereof, and a groove 22 is formed along the side surface thereof.

The guide grooves 22 are openings in which the guide rollers 40a and 40b can move and the guide rollers 40a and 40b are moved along the grooved grooves 22 as the inner piston 32 linearly reciprocates. And the three-dimensional cam 20 can rotate.

In an embodiment of the present invention, the guide rollers 40a and 40b may be provided as a pair, and when the guide rollers 40a and 40b are installed as a pair, the strength is increased, It is possible to output a stable rotational force.

The guide rollers 40a and 40b which repeatedly move left and right together with the linear reciprocating motion of the inner and outer pistons 32 and 34 are reciprocally moved in one direction in the sidewall 22 of the three- So that it can rotate only.

As described above, the three-dimensional cam 20 is installed in a rotatable structure, and on the outer surface thereof, a plurality of fastening holes 50 for fastening and fixing the cam housing 26 are formed.

7, a guide frame 28 for guiding the movement of the guide rollers 40a and 40b is inserted into the three-dimensional cam 20 along the through-hole 24, and the guide frame 28 At least one or more guide grooves 30 are formed in the guide grooves 30a and 30b, respectively. The guide grooves 30 may be formed of a pair of vertical grooves.

The inner guide rollers 40a and 40b of the guide rollers 40a and 40b move along the guide grooves 30 of the guide frame 28 and the guide rollers 40a and 40b of the outer side move, (40b) moves on the sine groove (22) of the three-dimensional cam (20).

As a preferred embodiment of the present invention, four guide grooves 30 may be formed in the guide frame 28 by providing guide rollers 40a and 40b perpendicular to each other, The guide rollers 40a and 40b on the inner side can move only in a straight line so that the three-dimensional cam 20 can rotate.

Fig. 8 is a plan view showing a trajectory in which the guide rollers 40a and 40b move along the groove 22 while the three-dimensional cam 20 rotates once. As an embodiment of the present invention, (38), a single combustion of the mixer occurs every time the three-dimensional cam (20) rotates by 90 degrees.

That is, when the three-dimensional cam 20 makes one revolution, combustion is performed two times in the left and right combustion chambers 38, and four combustion is performed in total. Thus, the horsepower ratio per engine weight is excellent.

Accurately, as combustion occurs in one combustion chamber 38 and the inner piston 32 and the outer piston 34 are pushed and moved in opposite directions to each other, the horizontal guide roller 40a and the vertical guide roller 40b are moved in the opposite direction And the horizontal guide roller 40a and the vertical guide roller 40b move linearly but as the stereoscopic cam 20 moves along the sagging groove 22 of the stereoscopic cam 20, the stereoscopic cam 20 rotates will be.

As the guide rollers 40a and 40b are moved by this one-time combustion, the three-dimensional cam 20 rotates 90 degrees, and the three-dimensional cam 20 makes one rotation by four times of total combustion.

The operation configuration of the inner and outer pistons 32 and 34 and the guide rollers 40a and 40b of the present invention will be described with reference to Figs. 9 to 13. Fig.

9 is a perspective view showing a combined structure of the inner and outer pistons 32 and 34 and the guide rollers 40a and 40b and the connecting rod 42 for supporting the inner and outer pistons 32 and 34 and FIG. 10 is a partially cutaway perspective view of FIG.

Referring to the drawings, the present invention is provided with a pair of inner and outer pistons 32 and 34 on the left and right sides, respectively, with respect to the connecting rod 42.

The guide rollers 40a and 40b are installed so as to intersect with each other in the vertical direction with respect to the connecting rod 42. The guide roller 40a fixed to the inner piston 32 is connected to the center of the connecting rod 42, The operation space portion 44a formed in the left side of FIG.

Since the three-dimensional cam type engine 100 of the present invention is an environmentally friendly engine that does not need to mix engine oil with fuel even though it has a two-stroke structure, a separate oil supply passage (not shown) for supplying engine oil to the friction surface of the outer piston 34 60 are formed in the deep portion of the connecting rod 42.

The oil supply passage 60 is supplied with the engine oil separately from the fuel and moves the engine oil to the outer piston 34 through the oil supply passage 60. The oil supply passage 60 is connected to the outer piston 34, At least one oil groove (62) is radially formed to supply the engine oil supplied through the oil passage (60) to the friction surface of the outer piston (34).

The oil groove 62 communicates with the oil supply passage 60 and is connected to the outer piston 62 through the oil groove 62 in which the engine oil supplied through the oil supply passage 60 is radially formed 34). ≪ / RTI >

The inner piston 32 is provided with a plurality of fitting holes 36 for fixing the guide roller 40a to the inner piston 32. The inner piston 32 is provided with a guide roller 40a, ).

A guide roller 40a is fixed to the fitting hole 36 in the horizontal direction so that the guide roller 40a moves together when the inner piston 32 is moved by the combustion of the combustion chamber 38. [

The inner piston 32 is symmetrically disposed at both ends and the guide rollers 40a are inserted through the fitting holes 36 formed in the respective inner pistons 32 so that the inner pistons 32 at both ends And is coupled by the guide roller 40a so as to be movable.

13, an outer piston 34 is fixedly secured to both ends of the connecting rod 42 and a horizontal guide roller (not shown) is fixed to both ends of the connecting rod 42. [ A vertical guide roller 40b is fixedly installed at upper and lower portions with reference to a working space portion 44a to which the guide portions 40a are moved.

At this time, the vertical guide roller 40b is divided into upper and lower parts so that the horizontal guide roller 40a can be moved in the operating space part 44a. The vertical guide roller 40b can be installed on the connecting rod 42 by a separate shaft or bolt have.

In addition, the inner piston 32 located at both sides is coupled to form a moving space portion 44b. The moving space portion 44b is positioned orthogonally to the operating space portion 44a and is moved along the outer piston 34 Thereby forming a space for moving the guide roller 40b which reciprocates linearly.

Figs. 14A to 14B are views for explaining the operation of the inner and outer pistons 32 and 34 by the combustion of the combustion chamber 38 and the rotation configuration of the three-dimensional cam 20 accordingly.

For convenience of explanation, the left and right sides are divided on the basis of the drawing, and a description of the operation configuration of the two-stroke engine and the configuration not shown in the drawings will be omitted.

First, referring to FIG. 14A, when combustion by compression occurs in the combustion chamber 38 on the right side, the inner piston 32 is pushed to the left side and the outer piston 34 is pushed to the right side by the explosive force.

As the position of the stereoscopic cam 20 is fixed, the inner piston 32 on the right side is pushed to the left side and the inner piston 32 on the left side is pushed to the left side as the embodiment of the present invention. (34) is also pushed to the right side and pulls the opposite outer piston (34) to the right.

That is, as the left inner piston 32 is pushed to the left and the outer piston 34 is pulled to the right, the combustion chamber 38 is compressed (state of FIG. 14B) .

14B shows a state in which the left and right combustion chambers 38 are compressed while the inner and outer pistons 32 and 34 are pushed by the combustion in the right combustion chamber 38, Combustion occurs and the three-dimensional cam 20 is rotated by 90 degrees.

14B, when the combustion is generated in the left combustion chamber 38, the above-described process is repeated. When the combustion process is repeated twice (four combustion), the three-dimensional cam 20 rotates once, So that the rotational force is transmitted to the rotary shaft 54 through the cam gear 52 and is output.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the scope of claims and equivalents thereof.

(2) - cylinder head (4) - intake passage
(6) - exhaust path (8) - reed valve
(10) - spark plug (12) - cylinder liner
(14) - Cylinder intake (16) - Cylinder exhaust
(18) - slope (20) - stereoscopic cam
(22) -signed groove (24) -through hole
(26) - cam housing (28) - guide frame
(30) - Guide groove (32) - Inner piston
(34) - Outer piston (36) - Insertion ball
(38) - combustion chamber (40a) (40b) - guide roller
(42) - connecting rod (44a) - operating space part
(44b) - moving space part (46) - fastening bolt
(48) - fastening pin (50) - fastening hole
(52) -cam gear (54) -rotation shaft
(56) - fastening portion (58) - guide shaft
(60) - oil supply passage (62) - oil groove
(100) - stereoscopic cam engine

Claims (5)

A cylinder head 2 for forming a combustion chamber 38 at both ends,
A cylinder liner 12 for the intake and exhaust of the combustion chamber 38 is formed inside the cylinder head 2. The cylinder liner 12 is provided with a cylinder intake and exhaust port 14 for the intake and exhaust of the combustion chamber 38 16 and a slope 18 is formed at the inlet and outlet of the cylinder intake and exhaust ports 14 and 16 so that the combustion chamber 38 can vortify in one direction at the time of intake and exhaust,
Inner and outer pistons 32 and 34 located in the cylinder liner 12 and reciprocatingly reciprocating in a combustion process of the combustion chamber 38,
A three-dimensional cam (20) rotatably installed by inner and outer pistons (32, 34) reciprocating linearly and forming grooves (22) surrounded by ice to form a plane sine curve is formed,
A pair of guide rollers 32 and 33 for rotating the three-dimensional cam 20 while reciprocating right and left on the sine groove 22 formed in the three-dimensional cam 20 as the inner and outer pistons 32 and 34 linearly reciprocate right and left, (40a) and (40b)
The stereoscopic cam 20 is inserted into a through hole 24 formed in the stereoscopic cam 20 so as to guide the movement of the guide rollers 40a and 40b and is reciprocated in the left and right reciprocating motion of the guide rollers 40a and 40b And a guide frame 28 in which four guide grooves 30 for guiding the guide grooves 30 are formed,
A connecting rod (42) for guiding the reciprocating motion of the inner piston (32) in the left and right direction is formed,
The connecting rod 42 is formed with a working space portion 44a in which the guide roller 40a fixed to the fitting hole 36 of the inner piston 32 linearly reciprocates and the inner piston 32 is provided with an outer piston A moving space portion 44b in which the guide roller 40b linearly reciprocates along the guide passage 34a and 34a is formed and the operation space portion 44a and the movement space portion 44b are installed so as to be perpendicular to each other,
An oil supply passage 60 is formed in the deep portion of the connecting rod 42 and an outer piston 34 is connected to the oil supply passage 60 to supply the engine oil to the friction surface of the outer piston 34 A radially formed oil groove 62 is formed,
And a cam housing (26) for outputting the rotational force of the rotating three-dimensional cam (20) through a cam gear (52) to a rotational shaft (54)
The body of the inner piston 32 and the guide roller 40a and the bodies of the outer piston 34, the connecting rod 42 and the guide roller 40b move in opposite directions with the combustion chamber 38 being opposed to each other. So that the vibration is canceled.
The method according to claim 1,
An intake passage 4 is provided at one side of the cylinder head 2 and a mixer supplied via a reed valve 8 through the intake passage 4 is arranged outside the outer piston 34 to be connected to an outer piston Flow scavenging structure for forcibly supplying a predetermined amount to a cylinder without providing a mechanical valve structure by providing a space for supplying the gas to the combustion chamber 38 when the gas-liquid separator 34 is moved outward. Cam engine.
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