JP2007074806A - Piston engine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a piston engine for eliminating a necessity of combustible fuel such as gasoline and hardly inducing an environmental problem due to exhaust gas. <P>SOLUTION: A permanent magnet 6 is embedded at the end of a piston head 2. An electromagnet 8 is provided at the end of a cylinder 1. The piston head 2 is guided by the cylinder 1, and reciprocated by timely changing the direction of a current carried to the electromagnet 8 and alternately implementing suction and repulsion between the permanent magnet 6 and the electromagnet. Reciprocation movement can be converted into rotational movement through a crank mechanism. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a so-called piston engine in which a piston is continuously reciprocated in a cylinder, and more particularly, to a piston engine that does not use petroleum-based fuel such as gasoline, light oil, and propane gas.

As an engine for driving an automobile, there is a so-called piston engine in which a piston is reciprocated by exploding a mixture of fuel and air in a cylinder. In automobiles, this reciprocating motion is converted into rotational motion via a crankshaft to obtain a driving force for rotating the wheels. However, CO ₂ , SOx, and NOx contained in the combustion gas generated by the combustion of fuel cause environmental problems. For this reason, battery electric vehicles and liquid fuel vehicles that discharge water as exhaust gas have been developed and put into practical use.

  On the other hand, Patent Document 1 discloses an electric start piston engine that requires a conventional small storage battery because there is a simultaneous start coil without using a large capacity large capacity storage battery. This electric starting piston engine has a conductive coil on the outer periphery of the top dead center position of the piston core, a bismuth core is fixed to the top of the piston core (overhead), and an electromotive coil is installed on the outer periphery. A magnetic field barrier ring for moving the piston is provided at the lower end of the conductive coil.

JP-A-8-37773

  However, in the piston engine disclosed in Patent Document 1, the piston is driven by an electromotive coil provided on the outer periphery of the piston iron core and by a conductive coil provided at the top dead center position of the piston iron core. In addition, each of these coils requires a power source, and control of energization of these coils becomes complicated, which may lead to a complicated structure.

  Therefore, an object of the present invention is to provide a piston engine that can be reliably operated with a simple structure.

  As a technical means for achieving the above object, a piston engine according to the present invention is a piston engine in which a piston reciprocates in a cylinder, wherein a permanent magnet is disposed on an upper portion of a piston head of the piston, An electromagnet whose axial direction is the direction of reciprocation of the piston is provided in the cylinder head so as to face the piston head, and the energization direction to the electromagnet can be changed.

  Since the magnetic pole of the permanent magnet is fixed, it is possible to cause attraction and repulsion between the permanent magnet and the electromagnet by changing the energization direction to the electromagnet. That is, the energization direction of the electromagnet is changed so that the permanent magnet is attracted when the piston head is at the bottom dead center, and the permanent magnet is repelled when the piston head is at the top dead center. Thus, when the piston head is at the bottom dead center, the piston head is attracted by the electromagnet and moves toward the electromagnet, that is, toward the top dead center. Move away, that is, toward the bottom dead center. For this reason, the piston head reciprocates by appropriately changing the energization direction to the electromagnet.

  A piston engine according to a second aspect of the invention is characterized in that a crankshaft is rotated by a reciprocating motion of the piston.

  That is, a crank mechanism is used to convert the reciprocating motion of the piston into a rotational motion, and can be used as an engine as a driving source for various vehicles and the like.

  According to a third aspect of the present invention, there is provided a piston engine in which a piston is reciprocated by being guided by guide means, wherein a permanent magnet is embedded in one end of the piston, An electromagnet is disposed at a position facing the one end, and the energization direction to the electromagnet is changed as appropriate.

  Unlike a piston engine of an automobile or the like, it is not necessary to compress the fuel / air mixture, and therefore it is not necessary to form a sealed chamber by the piston and the cylinder. For this reason, the piston does not need to be combined with the cylinder, and can be structured such that the direction of motion is guided by, for example, a guide rod.

  According to the piston engine of the present invention, petroleum-based fuels such as gasoline and light oil are not required, so various devices for combustion are not required, and a control device for stable combustion is not required. So the structure can be simplified. And since it is not the structure which burns a fuel, it can be set as a pollution-free engine which does not discharge | emit combustion gas and does not produce an environmental problem.

  Further, according to the piston engine of the second aspect of the present invention, a reliable rotational motion can be obtained by using the piston engine as a drive device for the crank mechanism. In addition, the rotational movement of a crankshaft can be smoothly performed by making an appropriate number of cylinders, and reciprocating by shifting the phase of operation | movement of each piston.

  Further, according to the piston engine of the third aspect of the present invention, it is only necessary to provide a guide means for guiding the reciprocating motion direction of the piston without requiring a combustion chamber unlike a gasoline engine. For this reason, the structure can be simplified. In addition, for example, when the guide means is composed of a rod such as a guide rod, the piston can be guided even if the rod is curved to some extent, so that the movement of the piston is not limited to a linear motion, but along a curve. Can be reciprocated.

  The piston engine according to the present invention will be specifically described below based on the preferred embodiments shown in the drawings.

  FIG. 1 is a diagram showing a schematic structure of a piston engine according to an embodiment of the present invention, in which a piston head 2 is slidably provided inside a cylinder 1 serving as guide means. A base end portion of the piston rod 3 is connected to the base end portion of the piston head 2 so as to be rotatable about the shaft 3 a with respect to the piston head 2. A pivot shaft 4a of the crankshaft 4 is connected to the tip of the piston rod 3 so as to be rotatable. In addition, the lower end part of the cylinder 1 and the crank box 5 in which the crankshaft 4 is housed are integrally connected so as to be detachable.

  A permanent magnet 6 is held on the tip side of the piston head 2. That is, a magnet mounting portion 7 formed of a concave portion is provided on the tip side of the piston head 2, and the permanent magnet 6 is accommodated and held in the magnet mounting portion 7.

  An electromagnet 8 is attached to the upper end of the cylinder 1. The electromagnet 8 is attached by overlapping a bobbin 8b for winding the coil 8a with a flange portion 1a formed on the upper end portion of the cylinder 1. The electromagnet 8 can be adjusted in energization direction and current magnitude by a control device (not shown). That is, the axial direction of the electromagnet 8 and the direction of the reciprocating motion of the piston head 2 are matched.

  The operation of the piston engine according to the embodiment of the present invention configured as described above will be described below. In FIG. 1, it is assumed that the crankshaft 4 rotates clockwise and the piston head 2 is in the middle of ascent. At this time, an electric current is passed through the electromagnet 8 in a direction in which the permanent magnet 6 can be attracted. For this reason, the piston head 2 is attracted by the electromagnet 8 and continues to rise, and the turning portion 4a of the crankshaft 4 is pulled up.

  The direction of energization to the electromagnet 8 is changed at the timing when the piston head 2 is raised to the top dead center so that the permanent magnet 6 is repelled. As a result, the piston head 2 is lowered from the top dead center, and the turning portion 4a of the crankshaft 4 is pushed down. At the timing when the piston head 2 is lowered to the bottom dead center, the energization direction to the electromagnet 8 is switched to the direction in which the piston head 2 is attracted. Thus, after passing through the bottom dead center, the piston head 2 is attracted by the electromagnet 8 and rises. That is, the piston head 2 can be continuously reciprocated by changing the energization direction to the electromagnet 8 according to the moving direction of the piston head 2.

In the embodiment described above, the structure in which the reciprocating motion of the piston head 2 is guided by the cylinder 1 as a guide means has been described. However, unlike the conventional gasoline engine, it is not necessary to compress the fuel / air mixture, Since it is not necessary to form an airtight chamber between the piston head 2 and the cylinder head, the piston head 2 may be reciprocated with the piston head 2 opened. For this reason, for example, a bracket is provided on the piston head 2, a guide rod appropriately supported and fixed to the bracket is inserted, and the piston rod 2 is guided by the guide rod to slide to reciprocate. You can also That is, the guide rod is used as the guide means. Note that the guide means is not limited to the guide rod, and may have another structure.

  According to the piston engine of the present invention, it can be used for various devices that have conventionally obtained power by a piston-cylinder mechanism, and does not require petroleum-based fuels such as gasoline, light oil, and propane gas. Can be used instead of the conventional piston-cylinder mechanism.

It is sectional drawing explaining the schematic structure of the piston engine which concerns on this invention.

Explanation of symbols

1 Cylinder (guide means)
2 Piston head 3 Piston rod 4 Crankshaft 5 Crankbox 6 Permanent magnet 7 Magnet housing part 8 Electromagnet

Claims (3)

In a piston engine in which a piston reciprocates in a cylinder,
A permanent magnet is disposed on the piston head of the piston,
In the cylinder head of the cylinder, an electromagnet with the direction of the reciprocating motion of the piston as an axial direction is provided facing the piston head,
A piston engine characterized in that an energization direction to the electromagnet can be changed.   The piston engine according to claim 1, wherein a crankshaft is rotated by reciprocating motion of the piston. In a piston engine that reciprocates the piston by guiding it to the guide means,
A permanent magnet is embedded in one end of the piston,
An electromagnet is disposed at the end of the reciprocating motion of the piston and facing the one end.
A piston engine characterized by changing the energization direction to the electromagnet as needed.

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