JPS5930185Y2 - internal combustion engine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a reciprocating internal combustion engine in which a rotating shaft is provided so as to pass through a cylinder, and the vertical movement of a piston is directly converted into rotation of the rotating shaft.

Conventionally, in reciprocating internal combustion engines, one end of the connecting rod is connected to a piston that reciprocates within the cylinder, and the crankshaft is connected to the other end, converting the reciprocating motion of the piston into rotational motion of the crankshaft. .

Therefore, although the sealing structure between the cylinder and the piston is simple, the mechanical efficiency is low because it converts linear motion into rotation.

On the other hand, a rotary engine was developed that directly converts the explosion pressure caused by combustion of an air-fuel mixture into rotational motion without using a connecting rod, but there are various problems with sealing the combustion gas.

The present invention uses a reciprocating internal combustion engine in which a slider is loosely engaged within the piston without using a connecting rod, and the rotating shaft of an eccentric wheel rotatably installed within the slider is connected to the elongated hole of the piston and the cylinder. protrude to the outside through the through hole,
The reciprocating motion of the piston is directly converted into rotation of the rotating shaft via the slider button and the eccentric ring, and a pumping action is applied to the lower piston space casing or the slider side space within the piston, and the structure is simple. The purpose of this invention is to obtain an internal combustion engine with high mechanical efficiency, and in particular, in this invention, one of the piston lower space and the slider side space in the piston constitutes an air pump, and the other constitutes an oil pump. The engine is characterized in that it re-combusts exhaust gas, lubricates and cools various parts of the engine in a new and unprecedented manner.

Embodiments of the present invention will be described below based on the drawings.

First, the basic structure of the present invention is shown in FIGS. 1 to 9.

In the four-cycle engine shown in Figures 1 and 2, 1
2 is a cylinder, 2 is a cylindrical piston, 3 is a slider, 4 is a rotating shaft, and 5 is an eccentric ring.

As shown in FIGS. 3 and 4, the piston 2 has a cylindrical body provided with a sliding hole 6 in the horizontal direction, and a long hole 7 that is vertically long and perpendicular to the sliding hole 6. It is being

As shown in FIG. 5, the slider 3 has external dimensions that closely fit into the sliding hole 6 of the piston 2, and a circular hole 8 is provided in the center.

As shown in FIG. 6, a disk-shaped eccentric wheel 5 is integrally fixed to the rotating shaft 4 at a position offset from the center of the rotating shaft 4, and the eccentric wheel 5 is attached to a slider. It has an outer diameter that closely fits with the circular through hole 8 of No. 3.

A slider 3 is loosely fitted into the slide hole 6 of the piston 2, and a circular through hole 8 of the slider 3 is orthogonal to the slide hole 6.
An eccentric ring 5 is loosely fitted in the center of the circular through hole 8, and the rotating shaft 4 passes through the elongated hole 1 of the piston 2 and projects outward from a through hole 9 provided at a symmetrical position on the side wall of the cylinder 1. It is supported on appropriate bearings.

Note that 10 is a sealing material between the cylinder 1 and the piston 2, and the cylinder head 11 has a spark plug 12 and an intake valve 13.
An intake port 14 that is opened and closed by an exhaust valve 15 and an exhaust port 16 that is opened and closed by an exhaust valve 15 are provided.

The operations accompanying the ignition and explosion of the air-fuel mixture in the above four-cycle opening will be explained.

FIG. 1 shows a state in which the piston 2 has reached the top dead center of the compression stroke, and the tip of the eccentric wheel 5 (the point farthest from the center of the rotating shaft 4) is directly above it.

When the air-fuel mixture is ignited and exploded near top dead center, the piston 2 is pushed down, and the slider 3 is also pushed down accordingly, and the eccentric wheel 5 moves the slider around the rotating shaft 4 accordingly. 3 receives a force that causes it to rotate clockwise within the circular through hole 8.

The rotation of the eccentric wheel 5 causes the slider 3 to slide rightward along the sliding hole 6 by its tip, and as a result, the slider 3 moves downward and to the right while sliding the slider 3 through the eccentric wheel 5. rotates clockwise, the piston 2 descends along the rotary shaft 4 along the elongated hole 7, and as shown in FIG. Come to the edge.

When the piston 2 further descends, the slider 3 moves towards the piston 2.
At the same time, the slider 3 moves downward and rotates the eccentric wheel 5, and the slider 3 itself slides from the right end to the left by the tip of the eccentric wheel 5, reaching the bottom dead center as shown in FIG. , the tip of the eccentric wheel 5 faces downward.

When the piston 2 rises from the bottom dead center, the slider 3 rises, and at the same time as the eccentric wheel 5 further rotates, the slider 3 slides to the left by the tip of the eccentric wheel 5. As shown in the figure, the tip of the eccentric wheel 5 faces leftward, and the slider 3 is located at the left end.

Subsequently, the piston 2 further rises and reaches the top dead center, completing the exhaust stroke, and then descends and rises again to perform the suction and compression strokes.

The rotation shaft 4 rotates clockwise due to the movements of the piston 2, slider 3, and eccentric wheel 5 as described above.

Next, an embodiment will be described in which a pumping action is provided to the space below the piston 2 or to the side space of the slider 3 inside the piston 2, with respect to the basic structure described above.

The four-stroke engine shown in FIGS. 10 and 11 has a bottom wall 17 provided on the lower surface of the cylinder 1, and a partitioned lower space 18 of the piston is used as an oil pump.
Left and right slider side spaces 19 and 20 formed between the slider 3 and the cylinder 1 in the piston 2 are used as air pumps for reburning exhaust gas and cooling engine parts.

That is, the check valve 2 is installed in the suction port 21 of the piston lower space 18.
The oil tank 23 is connected to the oil tank 23 through the piston 2, and the pressure feed port 24 is connected to the oil supply pipe 26 through the check valve 25. be done.

In the past, an intake pipe 27° 27 and an air outlet 28, 28 were respectively provided in the cylinder 1 at a position facing the left and right slider side spaces 19, 20 via check valves. An injection nozzle 30 is opened into the exhaust port 16 through a blow pipe 29 .

As shown in FIG. 11, the slider side spaces 19 and 20 are
The reciprocating movement of the slider 3 within the piston 2 due to the rotation of the rotating shaft 4 and the eccentric ring 5 operates as a type of reciprocating pump, and the air sucked from the intake pipes 27 and 27 through the check valve is sent to the air outlet 28. 28 to the blast pipe 29, and is injected into the exhaust port 16 from the injection nozzle 30.

Additionally, this air is supplied to the cylinder 1, piston 2, slider 3, eccentric wheel 5, and rotating shaft 4 heated by the combustion gas.
It is also used for cooling.

In addition, the piston lower space 18, the slider side space 19.20
The use of the pump action in is not limited to that shown in FIG. 10, and conversely, the piston lower space 18 may constitute an air pump, and the slider side spaces 19 and 20 may constitute an oil pump. .

Further, a piston lower space 18, a slider side space 19.
If the pump action of 20 is insufficient to achieve the above-mentioned usage, it is preferable to install and connect an oil pump, air pump, etc. externally.

As described above, according to the present invention, when the piston moves up and down within the cylinder, the slider moves up and down while rotating the eccentric ring, and also slides left and right, thereby controlling the up and down movement of the piston. Since it is the rotation of the rotation axis and the vertical motion is directly converted into rotational motion, rotation with high mechanical efficiency can be obtained.

Since the conventional seal structure between the cylinder and the piston can be used as the broken seal part, the structure is simpler than that of a rotary engine, and the sealing effect is reliable.

Furthermore, according to the present invention, the connecting rod and crankcase part of conventional reciprocating internal combustion engines are no longer required, and the rotating shaft is structured to protrude from the cylinder, so the overall height of the engine can be significantly lowered and the weight can also be reduced. You can aim big.

Furthermore, according to the present invention, one of the piston lower space and the slider side space in the piston constitutes an air pump, and the other constitutes an oil pump, thereby reburning exhaust gas and controlling various parts of the engine. Since lubrication and cooling are now performed, the conventionally separate air and oil pumps can be made unnecessary or smaller, simplifying internal combustion engine accessories, and further reducing size and weight. In particular, since the slider side space inside the piston constitutes an air pump or oil pump, it is possible to directly cool the piston, which was difficult in conventional internal combustion engines, and prevent seizures, abnormal combustion, etc. An excellent effect can be obtained in that it can be prevented.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the present invention, and FIG. 1 is a cross-sectional view of the main part showing the basic structure, and FIG. 2 is a cross-sectional view taken along A-A in FIG.
Cross-sectional view of the same main part along the line 1. Fig. 3 is a longitudinal cross-sectional view of the piston, Fig. 4 is a cross-sectional view of the piston taken along line B-B in Fig. 3, Fig. 5 is a cross-sectional view of the slider, and Fig. 6 shows the rotating shaft and eccentric ring. FIGS. 7 to 9 are sectional views of main parts showing the operation process, and FIGS.
Figure 0 is a sectional view of the main part of the embodiment, and Figure 11 is C- in Figure 10.
It is a sectional view along the C line. DESCRIPTION OF SYMBOLS 1... Cylinder, 2... Piston, 3... Slider, 4... Rotating shaft, 5... Eccentric ring, 6... Sliding hole,
7...Long hole, 8...Circular through hole, 9...Through hole, 10
...Seal material, 11...Cylinder head, 12...
・Spark plug, 13... Intake valve, 14... Intake port, 15... Exhaust valve, 16... Exhaust port, 17.
... Bottom wall, 18... Piston lower space, 19, 20.
... Slider side space.

Claims (1)

[Scope of utility model registration request] The cylindrical piston that reciprocates up and down inside the cylinder has a sliding hole in the horizontal direction passing through the center and a long hole in the direction perpendicular to the sliding hole. The slider is slidably fitted along the slide hole, and the slider has a circular hole bored in a direction perpendicular to the slide hole;
An eccentric ring provided on a rotating shaft passing through the elongated hole and the circular through hole in a direction perpendicular to the sliding hole is rotatably engaged with the circular through hole, and the rotating shaft is rotationally driven in accordance with the vertical movement of the piston. Either one of the piston lower space and the slider side space in the piston constitutes an air pump for reburning exhaust gas that introduces air and jets it into the exhaust passage, and the other one introduces lubricating oil. An internal combustion engine characterized by comprising an oil pump for lubricating various parts of the engine.