JPS62135618A - Coaxial type internal combustion engine - Google Patents

Abstract

PURPOSE:To achieve miniaturization by engaging a pin provided on the facing surface of a cylinder or piston with an endless sine-wave-shaped guide groove formed on the outer wall of the piston or the inner wall of the cylinder so that a turning output can be taken out in response to the reciprocating motion of the piston. CONSTITUTION:In a cylindrical cylinder 3 in which both ends are closed, a piston 1 on the outer circumference of which an endless sine-wave-shaped guide groove 10 is formed in housed so as to be capable of reciprocating in the axial direction and to be freely rotatable, and to the guide groove 10 a roller 7 which is axially supported so as to be freely rotatable on the inner wall of the cylinder 3 is engaged. And, by igniting the mixture inside a combustion chamber 8 under compression by an ignition plug 4 so as to be exploded, the piston 1 is turned while being moved rightward, and it is so arranged that the turning force can be taken out of an output shaft 2 as a power. Exhaust gases are exhausted from an exhaust port 5, and mixture is taken in via an intake port 6.

Description

DETAILED DESCRIPTION OF THE INVENTION This is an internal combustion engine that simultaneously performs reciprocating motion and rotating motion.

10 Purpose of the invention An internal combustion engine whose main purpose is to be small, compact, simple, and labor-saving.

a.Industrial fields of use Portable power sources, vehicles, small ships, pumps, etc.In the case of vehicles, the compact size allows it to be installed directly on the axle, making it possible to use a large amount of space inside the vehicle body, which has many advantages. .

b Conventional technology Conventionally, most internal combustion engines used a crankshaft, in which a crank chamber was added to the cylinder block, and the piston and the crankshaft, which was the output shaft, were perpendicular to each other. Therefore, the external shape becomes large and heavy, which is disadvantageous.

In crank grooves, when reciprocating motion is converted into rotational motion, excessive stress is applied to the crankshaft, and the shaft is designed to withstand stress, which also causes an increase in weight.

C. Problems to be Solved by the Invention One method for converting the reciprocating motion of the piston into rotary motion without using a crank mechanism is to apply a threaded groove. It is possible to cause movement and rotational movement.

1. Structure of the Invention The structure of a coaxial internal combustion engine can be roughly divided into three parts: a cylinder, a piston, and an output/lung.

Means for solving problem a In order to solve problem EC, by using guide I+'7j that gives rotation to the piston, the movement of the piston due to explosive combustion causes rotation in the piston itself, and the rotational force The piston is returned to its original position due to the 14 characteristics.

6. Effect When the circular motion is expanded by two degrees on the time axis, a sine wave is drawn.

When one wavelength of this sine wave is used for the guide groove and the guide groove is operated, the reciprocating motion is converted into a rotational motion, and the rotational motion is converted into a reciprocating motion.

Various characteristics can be obtained by changing the peak value of the sine wave.

Embodiment C A sinusoidal guide groove can be formed on the cylinder wall, but it is formed on the outer wall of the piston, which can be easily machined, and a roller is provided on the opposite inner wall of the cylinder via a fixing pin.

This process also maintains the rotational balance of the piston.

As a method of extracting rotational output as the piston rotates, the output shaft has a non-circular cross-sectional shape, a center hole is provided in the piston, the output shaft is inserted into the center hole, and the piston moves on the shaft.
The rotational output can be obtained by illuminating it.

The internal combustion engine shown in Figure 2 is a two-stroke type with opposed pistons,
The piston has 11 holes made of the same cedar as the output shaft in the center, and a hexagonal 11] power shaft with an IR surface is inserted into the hole, and between the opposing pistons there is a hole Therefore, the output shaft was made hollow, and the inside was used as an introduction path for the mixed gas that was the fuel.

The output shaft is provided with an opening at each of rJ shown in the figure to form a mixed gas path, and is opened and closed as the piston slides.

An opening for air is provided in the cylinder wall, and one of the output shafts is connected to a carburetor, and the introduction path is opened and closed depending on the rotation angle.

Multiple spark plugs are installed in the combustion chamber to improve combustion, increase output, and improve exhaust gas.

Effects of the Invention The 1rlII type internal combustion engine has a configuration in which everything is built into the cylinder, and compared to the conventional internal combustion engine, it is smaller in size and occupies less space, making it easier to install. Become.

The stress applied to the output shaft can be significantly reduced compared to the output shaft of a conventional crank mechanism, and as a result, the eaves can be reduced by making the diameter smaller and the wall thinner.

In order to maintain the rotational balance of the crank mechanism, a ballast is attached, but this also results in an increase in ff1ffi.

The piston system has a flywheel effect, and the external flywheel can be made smaller and lighter.

Vibration is reduced due to the symmetrical motion of the opposed pistons, and efficiency is improved because the opposed pistons are driven in one combustion chamber.

As the mixed gas passes through the fuel introduction path in the output shaft, it is possible to improve the vaporization rate by cooling the path and heating the mixed gas.

Since the piston itself acts as a bearing, axial strain is reduced.

As the piston rotates 11 times, uneven wear is less likely to occur at the contact portion with the cylinder wall than in conventional engines.

[Brief explanation of drawings]

FIG. 1 shows a horizontal profile of a coaxial internal combustion engine with the basic configuration of a two-stroke engine. FIG. 2 represents a two-stroke opposed piston engine. Figure 3 represents the piston. FIG. 4 shows the output shafts, each of which is provided with a small opening. 1 is a piston, 2. is the output shaft, 3. is cylinder, 4
゜ is a spark plug, 5. is an exhaust hole, 6. is an intake hole, 7. represents fixed pins and rollers. 8.: Maintain the combustion chamber

Claims (1)

[Claims] A guide groove is provided on the outer wall or inner wall of the piston provided in the cylinder, and a pin or roller is provided on the opposite side of the guide groove, so that rotational movement simultaneously occurs through the guide groove in response to the reciprocating movement of the piston, and the output shaft An internal combustion engine in which the piston and output shaft are in a coaxial relationship by extracting rotational output through the