JP2009108844A - Shaft valve engine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve productivity and save labor by simplifying a structure which has been normally provided at a cylinder upper part for charging air and exhausting gas in a conventional engine, and includes a tappet, a spring, a cam, and a camshaft in concrete, and requires complicated and delicate adjustment. <P>SOLUTION: This invention does not require the structure at all and comprises only shafts 2, 5 having two slits. Intake and exhaust are controlled by rotating the shafts 2, 3 and changing slit positions. In this method, assembly and adjustment are simplified and improvement of productivity is expected. In a case of a multiple cylinder structure engine, two shafts having a slit for each cylinder can coped with cylinders arranged in series. It is ideal to accurately work the slit, since timing slippage of each cylinder is not theoretically generated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

Detailed Description of the Invention

Industrial application fields

The present invention is a power internal combustion engine. Therefore, it can be used as a power source for generating energy such as electric power or the like for vehicles that require power.

Conventional engines usually have the structure at the top of the cylinder for supply and exhaust.
Specifically, a tappet, a spring, a cam, and a camshaft. These structures are complex and require delicate adjustments.

Problems to be solved by the invention

The present invention simplifies such a structure and improves productivity and labor saving.

Means to solve the problem

In the present invention, the above-described structure is not required at all, and is constituted only by a shaft having two slits.
Intake and exhaust control is performed by rotating the shaft and changing the position of the slit. This method simplifies assembly and adjustment, and can improve productivity. In the case of a multi-cylinder engine, two cylinders with slits can be used for cylinders arranged in series. If the slit is machined with high accuracy, the timing shift of each cylinder does not theoretically occur, which is ideal. In the two-cycle engine shown in the embodiment, since the shaft is located near the crankcase, it is not necessary to share the lubrication in the crankcase to have a structure necessary for the lubrication of the shaft. is there.

The present invention is based on a two-cycle engine.
In a conventional four-cycle engine, two cycles are required for intake and combustion of vaporized fuel and two cycles for exhaust of combustion gas. In the first two cycles, combustion energy is generated, but in the latter two cycles, because the combustion gas is exhausted, the previous combustion energy is consumed and cannot be converted into 100% motive energy. However, in a two-cycle engine, vaporized fuel is sucked, burned, and exhausted in only two cycles, so that combustion energy is not consumed for exhaust. Fuel consumption is twice that of a four-cycle engine, but the combustion energy is theoretically doubled and the synergistic effect is increased. Therefore, when making an engine with the same output, it becomes possible to reduce the total displacement, and it is easy to reduce the weight and size. In the case of a vehicle, this affects the whole, and there is a possibility that lower fuel consumption can be realized.
The relationship between the cylinder and the piston constituting the engine can be traced to a syringe.
The syringe is composed of a container, a piston and an injection needle. When the injection needle is attached to the injection solution and the piston of the syringe is pulled, the injection solution enters the container.
This is because by pulling the piston, the pressure in the container was placed in a vacuum or a low pressure state close thereto. When the piston is pushed, the injection solution is pushed out of the container. This is because the injection solution in the container was compressed because the piston was pushed and pushed out to release the pressure.
Similarly, the engine can suck in vaporized fuel when the pressure in the cylinder becomes a vacuum or a state close thereto. The high-pressure gas after combustion is compressed and exhausted as the piston rises.
However, in the two-cycle engine of the present invention, this principle cannot be applied because the air supply / exhaust structure is not located above the cylinder. Therefore, it is necessary to have a vacuum compressor for supply and exhaust. A vacuum compressor has a structure in which a helical piston is provided in a cylinder container, and the piston is rotated at a high speed to always create a vacuum or a low pressure state close thereto. Details are left to separate documents.
This compressor is arranged adjacent to the cylinder, between which the shaft valve is placed. The shaft valve is located at the middle of the cylinder for exhaust and at the bottom dead center for intake. When the shaft valve opens, the combustion gas is instantaneously sucked into the compressor side and exhausted. The reaction creates a vacuum in the cylinder or a state close to it, and the next vaporized fuel suction operation starts. In this way, two-cycle operation is possible by continuously performing exhaust and intake.

FIG. 2 explains the operation in the engine for each position of the piston.
FIG. 2-A shows a state where the piston is near the center of the cylinder and the exhaust valve shaft is open.
FIG. 2-B shows a state where the piston is at the bottom dead center of the cylinder and the intake valve shaft is open.
FIG. 2-C shows the process of fuel compression when the piston returns to the vicinity of the center of the cylinder and the exhaust and intake valve shafts are closed.
FIG. 2-D shows the piston reaching the top dead center of the cylinder and the fuel at the ignition point.

The invention's effect

The shaft responsible for supply and exhaust can be configured at the upper part of the cylinder like a conventional engine, but it cannot be denied that the shaft may be deformed by energy during fuel combustion. Also, since it is always rotating, there are still problems with lubrication and airtightness. In the two-cycle engine of the present invention, the above problems are solved by arranging them on the side of the cylinder. Furthermore, by arranging the shafts in steps, it is an ideal two-cycle engine.

Three-dimensional image of shaft valve Explanation of operation due to the difference in piston position in the cylinder.

Explanation of symbols

1. 1. Vacuum compressor 2. shaft valve for exhaust; Cylinder 4. Piston 5. Intake shaft valve

Claims (3)

The present invention relates to the structure of a power internal combustion engine (hereinafter referred to as an engine) for an automobile or the like. Specifically, two shafts (hereinafter referred to as shaft valves) with slits necessary for air supply / exhaust, including a series of air supply / exhaust structures such as tappets, springs, cams, camshafts, etc., which are conventionally arranged at the top of the cylinder of the engine It is a two-cycle or four-cycle engine characterized by a structure that can be replaced by (Fig. 1). Further, these two shafts are arranged not on the upper part of the engine but on the side surface of the cylinder, and this shaft is located at the lower part of the piston during fuel combustion so that it is not affected by combustion energy. Furthermore, instead of the structure in which the air is supplied and exhausted by the vertical movement of the piston, the pressure in the cylinder is controlled by a vacuum compressor arranged outside the engine body.

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