JPS6143207A - Intake/exhaust device of internal-combustion engine - Google Patents

Abstract

PURPOSE:To decrease the resistance of a driving mechanism and reduce noises by using a rotary type valve as an intake/exhaust valve. CONSTITUTION:A cylindrical rotary valve port 3 is arranged on a cylinder head 1. A combustion chamber 5 is communicated to the exhaust port 3 and intake port 2 in sequence when the valve 4 is rotated in synchronization with an engine. The intake/exhaust valve is formed in a rotary type, thus the driving resistance is small and no large noises are generated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an intake/exhaust device having an intake port and an exhaust port in a single cylinder.

Conventionally, in internal combustion engines, a valve mechanism that opens and closes valves is used for intake and exhaust operations, but the valve mechanism generates noise when the valves are opened and closed. The spring that closes the valve creates resistance to engine rotation, making the valve open and close inaccurately at high engine speeds. The valve itself also created resistance during intake, causing a lot of loss both mechanically and during the intake stroke.

An object of the present invention is to provide an intake/exhaust device that does not have the above-mentioned problems.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1- is an example in which the present invention is installed at the top of the combustion chamber, 1 is a cylinder head, 4 is a cylinder that has 2 intake boats and 3 exhaust boats, and 13 is a cylinder that connects 1 cylinder 4 to the engine at 50% of the engine speed. It is a mechanism that moves and rotates. The direction of rotation is counterclockwise toward the ventilation hole 8 of the intake boat.

As shown in Fig. 2, the cylinder 4 has an air intake port B in the center of the bottom of the cylinder, and an exhaust port 11 in the center of the opposite bottom, and also has an exhaust port 11 in the center of the bottom of the cylinder. The exhaust hole 9 of the intake boat is located on the side surface located at the intake and exhaust hole 12,
An exhaust port ventilation hole 10 is installed on the side surface of the engine, which is located at the intake and exhaust hole 12 during the exhaust stroke of the engine. A mechanism 13 for rotating the cylinder 4 at 50% of the engine speed is installed on the intake boat side of the cylinder 4.

Note that 14 is an ignition column.

Therefore, when the engine enters the intake stroke, the exhaust port 9 of the intake boat
is located in the intake/exhaust hole 12, and the air-fuel mixture in the intake boat is smoothly sucked into the combustion chamber 5. When the engine moves to the compression stroke, the exhaust hole 9 of the intake boat also moves further than the intake/exhaust hole 12, so the side surface of the cylinder 4 seals the intake/exhaust hole 12, and the air-fuel mixture is compressed. Even when the engine moves to the combustion stroke, the intake/exhaust hole 12 continues to be sealed by the side surface of the cylinder 4, and when the engine moves to the exhaust stroke, the exhaust port's discharge hole 11 is located at the intake/exhaust hole 12, allowing the exhaust gas to burn smoothly. The air is exhausted from chamber 5.

As mentioned above, the present invention is motivated by engine rotation and simply rotates the cylinder that governs intake and exhaust, so there is little mechanical resistance, and intake and exhaust operations can be performed accurately and smoothly from low to high rotational speeds, and are low mechanical It is something that can produce sound.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a sectional view, FIG. 2 is a perspective view of a cylinder from the lower left, and FIG. 3 is a bottom view of the cylinder head. 1... Cylinder head, 4... Cylinder,
6...Cylinder, T...Piston.

Claims (1)

[Claims] 1. An internal combustion engine characterized by having an intake/exhaust hole provided in a part of the wall of a combustion chamber of an internal combustion engine, a cylinder inserted into the engine, and an intake port and an exhaust port in the cylinder. Engine intake and exhaust system. 2. The intake and exhaust system for an internal combustion engine according to claim 1, wherein the cylinder is arranged in the engine so as to seal the intake and exhaust hole with a part of the side surface, and rotates due to engine rotation. 3. The intake port is connected to a fuel supply device, and a ventilation hole is provided in the center of the bottom surface of one side of the cylinder, and a discharge hole is provided in the side surface of the cylinder located during the engine intake stroke. Internal combustion engine intake and exhaust system. 4. The exhaust port for an internal combustion engine according to claim 1, wherein a discharge hole is provided at the center of the bottom facing the intake port side, and a ventilation hole is provided at the side surface of the column located during the engine exhaust stroke. Exhaust device.