JPH02140430A - Explosion cycle shortening type internal combustion engine - Google Patents

Abstract

PURPOSE:To remarkably heighten output values for high performance and smoothen revolution by installing a converting means to rotate an output shaft with the linear motion of a piston, and a suction/exhaust mechanism which alternates exhaust and suction strokes. CONSTITUTION:Cylinders 1-4 are arranged above a horizontal shaft in pairs on the left and right, two sets in the front and back. Each piston 11-14, possessing connecting members 21-24, are connected to an output shaft 30 with converting means. When starting an engine, a set of pistons consisting of two pieces (a pair) respectively go through explosion strokes as they make one reciprocation, so that explosion cycles take place twice in four cylinders everytime when the output shaft 30 makes one rotation. Thus, output value is remarkably increased for high performance, and the revolution is smoothened.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an internal combustion engine with a shortened explosion cycle that can be operated with much higher efficiency than conventional engines.

(Prior Art) When focusing on the number of explosions, a conventional 2-cycle engine causes one explosion per crankshaft rotation, and a 4-cycle engine causes one explosion per two crankshaft rotations. In order to smooth out such fluctuations in rotational force, multiple cylinders have been used.

(Technical issue) However, conventional multi-cylinder engines have, for example, 4 cylinders, 1000
Even though it is called cc, it does not mean that all four pistons enter the explosion cycle at the same time, but each piston of 250cc each causes one explosion. In other words, the three pistons in the explosion cycle not only do not produce any output, but also
It is a load that consumes the explosive energy of one piston to perform intake, compression, or exhaust work.

This state does not always change, but as the rotation speed increases, the four pistons come closer to being in an explosion cycle at the same time, and therefore the maximum output value will also occur in the high rotation range. . In other words, the above fact that the output value is proportional to the rotational speed means that at the same rotational speed, the shorter the explosion interval, the greater the output and the smoother the rotation.

The inventor focused on the above points and made the present invention as a result of intensive research.The purpose is to obtain a high output value by shortening the interval between explosions occurring in each cylinder at the same rotation speed, and to increase the rotation speed. The object of the present invention is to provide an internal combustion engine with a shortened explosion cycle that can facilitate the explosion.

Another object of the present invention is to provide an internal combustion engine with a shortened explosion cycle, which is capable of lowering the rotational speed and increasing torque than a conventional engine with the same output.

(Technical Means) The object is to provide a pair of cylinders arranged on a horizontal axis, each having a combustion chamber at its outer end, and a combustion cycle consisting of intake air, compression, explosion, and exhaust air in each cylinder. A pair of pistons that perform linear motion alternately, a member that integrally connects both pistons, and an output shaft that is supported in a direction perpendicular to the axis within a case that integrates both cylinders and the connecting member are linked. This is achieved by an internal combustion engine with a shortened explosion cycle, which is equipped with a conversion means that rotates the output shaft through the linear movement of a piston, and an intake/exhaust mechanism that alternately performs the exhaust stroke of one shilling and the intake stroke of the other shilling. be done.

In the present invention, a pair of cylinders are arranged horizontally,
An output shaft, that is, a crankshaft, is placed in the middle together with the case, and the pistons are inserted into the left and right cylinders and are connected to the output shaft by a coupling member, so that the pair of pistons P as shown in Fig. 1(C) , Q always reciprocate as one. Looking at this structure, the coupling members R and S are connected to the conversion means Y that rotates integrally with the output shaft It seems to resemble a horizontally opposed engine, but
The connecting member is one rigid member T, and a connecting rod U, ■
, and rotate the output shaft
It has the same structure as .

Therefore, two sets (one pair) of horizontally arranged cylinder pistons are essential to the present invention, and this is the minimum engine form, but it is free to combine them into two or three pairs. It is.

The pair of left and right pistons are linked to the intake and exhaust mechanisms, and when the piston in one cylinder is on the exhaust stroke, the piston in the other cylinder is linked to the reciprocating movement that is performed as if it were on the intake stroke. Since suction and exhaust operations are performed alternately, each piston always explodes once during each reciprocation. Therefore, the intake/exhaust mechanism needs to take in air twice and exhaust air twice in one rotation of the output shaft. To compensate for this, forced air intake and forced exhaust using a blower or the like can be used in combination in the mechanism.

Another object of the present invention is to have a pair of left and right cylinders arranged with their positions shifted back and forth on a horizontal axis, and a pair of pistons that alternately perform reciprocating linear motion in order to carry out a combustion cycle within each cylinder. and a member that integrally connects both pistons, and a pair of output shafts that are installed in front and rear of an output shaft that is rotatably supported in a direction perpendicular to the shaft in a case that integrates both cylinders so as to rotate together with the output shaft. This can also be achieved by a configuration comprising a converting means, and a pin that is separated from the output shaft by a predetermined radius and connects each coupling member to each converting means at the same point on the circumference that the radius passes through. In other words, the pair of left and right pistons do not have to be arranged on a common straight line, but can be arranged offset back and forth as long as they are on a horizontal axis. On the other hand, in that case as well, the connecting member and the converting means need to be connected at one point, as in the case described above (FIGS. 5 and 6).

(Function) With the above configuration, the two pistons arranged horizontally reciprocate within the cylinder to complete the explosion stroke, and the left and right actuate alternately, so that each rotation of the output shaft to 2
The operation is carried out in a manner that causes multiple explosions.

When two or more pairs of such combinations of pistons and cylinders are combined to form a multi-cylinder engine with multiples of two, such as four cylinders, six cylinders, etc., the explosion interval is shortened in inverse proportion.

For example, in the case of a two-cylinder four-stroke engine, the apparent explosion cycle is equivalent to one cylinder of a conventional two-stroke engine, and if the number of cylinders is increased, the number of explosions per revolution of the output shaft will further increase.

(Embodiment) Referring to the drawings, the figure shows a first embodiment of a four-cylinder gasoline engine, FIG. 2 is a vertical cross-section of the internal combustion engine according to the present invention, and FIG. 3 is a horizontal cross-section. A cross section is shown.

The cylinders 1, 2, 3, 4 are arranged in left and right pairs on a horizontal axis in two pairs, front and rear, and are integrated by the case 5, resulting in an H-shaped arrangement on the plane. Each cylinder 1~
Pistons 11, 12, 13, and 14 are fitted into each of the pistons 4 in the same way as in a normal reciprocating engine, and piston rings are also used.

Each piston 11-14 has a connecting rod or coupling member 21.2.
2, 23, and 24, which are connected to an output shaft 30 provided in the case 5 in a direction perpendicular to the piston sliding direction, by a converting means, and the converting means is connected to the coupling member 21.
~24 and a rotating member 31.32.3 with its end pivotally supported.
3.34, and a counterbalance 35 is attached to each rotating member 31-34. A pair of pistons 1 and 12 are connected by connecting the ends of coupling members 21 and 22 to the same point of a rotating member 31 in a single-point assembly manner with a pin 36, and are connected to 6 other pairs so as to integrally reciprocate. Piston 13.
14 is the same, and the respective shaft fulcrums (a) and (b) are arranged 180 degrees apart in the rotational direction.

41 is a spark plug, 42 is an air intake port, 43 is a carburetor brake, 44 is a reed valve, 45 is a mixed gas intake port, 4
6 is a combustion gas exhaust port, 47 is a gear set attached to the output shaft 30, 48 is a cylinder cooling water groove, and 49 is a wire accelerator. A high-voltage electric spark is blown into the ignition bladder 41 at an ignition timing determined by an external distributor, an electronically controlled fuel injection device, or the like. In the above explanation, the explosion order is the cylinder number on the diagonal, l,
4 and 2.3 will be ignited at the same time. This cancels out lateral vibrations and enables quiet operation. However, without being limited to this order, for example, the firing order may be such that cylinders 1, 3, and 2.4 are fired at the same time.

5 and 6 show a second embodiment of the present invention. FIG. 5 is a conceptual cross-sectional view of an engine having a pair of pistons 51, 52 shifted forward and backward, and the connection of both pistons 51, 52. The coupling members 53, 54, which correspond to rods, are each connected to one point on the circumference of a rotary member 55, 56, which is part of the converting means fixed to the output shaft 60, by pins 57, 58. 59 is a casing having a cylinder for incorporating the above mechanism.

A pair of pistons 51.52 are each provided with a separate rotating member 55.5.
6, the connecting point is the same in the radius of rotation of the output shaft 60 and the same position on the circumference of the radius for the pair of pistons. In other words, the principle shown in FIG. 1(C) is the same, and this must be followed even when the engine is increased to 4 cylinders or even 6 cylinders as shown in FIG. 6. FIG. 6 shows that the coupling members 71, 72 of the front piston pair 61, 62 are pin-coupled to each rotating member 65, 66 at a point a around the output shaft 6o, and the coupling member 73 of the rear piston pair 63, 64 is connected with a pin at a point a around the output shaft 6o. .7
4 also shows an example in which one other point is already pin-coupled to each rotating member 67, 68, and both points a and b are on the same circumference of the rotating members 65 to 68 centered on the output shaft 60. Therefore, only the phase is different. This phase is set to balance the rotation.

Operation When operating the engine as shown in Figures 2 and 3,
Each pair of pistons undergoes an explosion stroke each time they make one reciprocation, so each rotation of the output shaft 3o causes two explosion cycles in the four-cylinder example. Therefore, the third
Comparing the engine speed, etc. of the engine shown in the figure and a conventional inline four-cylinder engine, the results are as shown in FIG. 4.

According to the figure, when the output shaft or crankshaft is operated at the same rotation speed, the number of explosions, that is, the number of times energy is generated, is twice that of a conventional engine, and conversely, the explosion time interval is 2 times.
It can be understood that the difference is 1/1.

Conversely, the number of rotations is only half that of a conventional engine, and the piston stroke can be lengthened to reduce the speed accordingly, so when applying the present invention to a 2-stroke engine, it is possible to eliminate the drawbacks of a conventional 2-stroke engine. This will solve the problem of insufficient torque. Furthermore, if an operating method is adopted in which the rotational speed is halved, the durability of the engine will be doubled, and the combustion time will be the same as the conventional type, so no heat droop phenomenon will occur.

The above points are exactly the same in the embodiments shown in FIGS. 5 and 6. In the case of this second embodiment, the conversion means for converting the reciprocating motion of the piston into rotational motion is distributed for each piston, so the strength of the members and the rigidity of the output shaft are set low to avoid concentration of load distribution. be able to.

(Effect) Therefore, according to the present invention, when the number of cylinders is the same, the explosion cycle is halved at the same rotation speed compared to a conventional engine.
, and the number of explosions is doubled, resulting in the effect of significantly increasing the output value. Furthermore, with the same output, the torque can be increased compared to a conventional engine, and the rotational speed is reduced, so it is possible to provide a highly efficient internal combustion engine with high performance and smooth rotation.

[Brief explanation of the drawing]

The drawings relate to an internal combustion engine with a shortened explosion cycle according to the present invention, and FIG. 1 (a), (b), and (c) are diagrams of the principle of the present invention, and FIG. 2 is a longitudinal section showing the first embodiment of the present invention. Front view, 3rd
4 is a graph showing operating characteristics, FIG. 5 is a cross-sectional explanatory view showing a second embodiment of the present invention, and FIG. 6 is a perspective view illustrating the converting means. 1.2.3.4...Cylinder, P, Q, 11.1
2.13.14.51.52.61.62.63.64
... Bismeen, U, V, 21.22.23.24.
71.72.73.74...Connecting rod or coupling member, 3
1.32.33.34.55.56.65.66.67
．． 68...Rotating member, X, 30.60...Output shaft.

Claims (3)

[Claims] (1) A pair of cylinders arranged on a horizontal axis, each with a combustion chamber at its outer end, and each cylinder performs reciprocating linear motion alternately through a combustion cycle consisting of intake, compression, explosion, and exhaust. A pair of pistons, a member that integrally connects both pistons, and an output shaft that is supported in a direction perpendicular to the axis within a case that integrates both cylinders and the connecting member are linked, and the pistons move linearly. An internal combustion engine with a shortened explosion cycle, comprising a conversion means for rotating an output shaft, and an intake/exhaust mechanism that alternately performs an intake stroke to the other cylinder during the exhaust stroke of one cylinder. (2) The explosion cycle shortening internal combustion engine according to claim 1, wherein two or more pairs of cylinders and pistons are combined with respect to one output shaft. (3) A pair of left and right cylinders arranged with their positions shifted back and forth on a horizontal axis, a pair of pistons that perform reciprocating linear motion alternately to perform a combustion cycle within each cylinder, and both pistons. and a pair of converting means provided in a case integrating both cylinders, front and rear of an output shaft supported in a direction perpendicular to the axis, so as to rotate together with the output shaft. , a pin that is separated from the output shaft by a predetermined radius and connects each of the coupling members to each conversion means at the same point on the circumference that the radius passes through.