JPH0886208A - Internal combustion engine - Google Patents

Abstract

PURPOSE: To smoothly control supply/exhaust gas and also improve combustion efficiency by linking, respective rotary media provided to one end of each valve body, with the crankshaft of a cylinder, a pulley, the driving medium of a vehicle rotary shaft, and so on respectively through winding media. CONSTITUTION: A pair of cylindrical valve bodies 7 having hollow chambers 71 are provided to the cylinder head 6 of an internal combustion engine, one side of a hollow chamber 71 of each valve body 7 is communicated with a supply/exhaust port 4 provided to the cylinder head 6, and the other side of the hollow chamber 71 is communicated with the main chamber 2 of a cylinder block 1. Rotary media 73 such as a pulley, a splocket, etc., are respectively provided at one end of each valve body 7, and are linked with the crankshaft of a cylinder, the pulley, the driving medium of a vehicle rotary shaft, and so on through winding media such as a belt, a chain, etc. Hereby, smooth control of supply/exhaust gas can be achieved, and combustion efficiency and output torque can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gasoline internal combustion engine used as various power sources for automobiles and the like.

[0002]

2. Description of the Related Art Conventionally, as this type of internal combustion engine, a four-cycle engine, a two-cycle engine, a rotary engine, etc. are known. In each of these engines, the supply / exhaust structure that supplies or stops the supply gas and the exhaust gas to the main chamber of the shilling block consists of the supply / exhaust port and the supply / exhaust valve provided in the cylinder head. Air is supplied to and exhausted from the main chamber through control of a valve. Therefore, there are problems such as a complicated structure, insufficient consideration for reducing the flow resistance of the supply / exhaust gas, and thus a problem that the smooth flow of the supply / exhaust gas is not achieved.

There are the following inventions as a new type of engine replacing the above-mentioned cabinet engine. (1) Japanese Patent Laid-Open No. 5-
There is an internal combustion engine of No. 141261, in which the present invention continuously performs each operation of an intake stroke, a compression stroke, a combustion process, and an exhaust stroke in a combustion chamber by reciprocating sliding of a piston and rotation of a rotor. The piston is configured to linearly reciprocate by the rotation of the rotor while reliably receiving the explosive force. An object of the present invention is to improve output torque, reduce noise and vibration, improve combustion efficiency, and the like by utilizing smooth supply and exhaust of the configuration and rotation of the rotor. (2) There is a direct cycle engine of Japanese Patent Laid-Open No. 5-187252, and the volume of the invention is defined by an eccentric roller which is inscribed in a cylindrical cylinder and rotates around its axis, and a seal blade whose tip is in contact with the eccentric roller. A variable-type combustion expansion chamber and an exhaust gas chamber are configured, the combustion expansion chamber is provided with injection valves and spark plugs for liquid hydrogen, liquid oxygen and circulating water, and the exhaust gas chamber has an exhaust port. It is configured as follows. The combustion expansion chamber and the exhaust gas chamber are housed in a cylindrical volume to achieve compactness and smooth rotation of the eccentric roller.
And so on.

[0004]

Certainly, the above-mentioned invention is
It is intended to improve the combustion efficiency, output torque, etc., or reduce noise and vibration while improving the conventional engines so as to smoothly supply and exhaust air. However, since the structure of each conventional engine is essentially changed, a simple problem such as whether it actually operates or whether improvement of combustion efficiency, output torque, etc. can be achieved has been sufficiently clarified. It is considered not to be. Further, in these configurations, there is a problem that the volume of the combustion chamber is small and a necessary space for charging the intake gas is not secured.

[0005]

In view of the above, the present invention provides
To improve the conventional Renpro engine slightly, to smoothly control the supply / exhaust gas, improve combustion efficiency, or omit the supply / exhaust valve, simplify the configuration based on this, and reduce the number of parts. The following configuration is adopted for.

That is, the internal combustion engine of the present invention is an internal combustion engine comprising a cylinder block having a piston and a cylinder head having an ignition plug arranged on the cylinder block. A pair of cylindrical valve bodies having hollow chambers are arranged in the cylinder head of the cylinder head, one of the hollow chambers of each valve body is provided in the cylinder head as an air supply / exhaust port, and the other of the hollow chambers is provided in the cylinder block. Drive the rotation of the crankshaft pulley of the cylinder and other vehicle rotation shafts through the winding medium such as a belt or a chain, which is connected to the main chamber of It is configured by connecting to each medium.

[0007]

Next, the operation of the present invention will be described. The air supply gas provided in the cylinder head and the air supply gas supplied through the exhaust port reach the main chamber of the cylinder block through the hollow chamber of one valve body and the communication passage provided in the hollow chamber. , Is stored in the main chamber (air supply flow path). On the other hand, the exhaust gas generated by the explosion passes through the communication passage provided in the other valve body and is supplied through the hollow chamber, reaches the muffler from the exhaust port, and is then released into the atmosphere (exhaust gas). Flow path). The mixed gas stored in the main chamber is compressed by a piston rising in the main chamber, the compressed gas (compressed mixed gas) explodes and burns by an ignition plug, and the crank arm is rotated by the explosive force of the mixed gas. Then, the combustion gas that has finished its work through the explosive combustion is exhausted through the exhaust passage. These steps are continuously performed between each piston and the main chamber, and the vertical movement with each piston is converted into a rotary movement via the crank arm.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 is a cylinder block having a plurality of main chambers 2, and a piston 3 is provided in each main chamber 2 so as to be vertically movable. Air is supplied above the cylinder block 1.
A cylinder head 6 having an exhaust port 4 and having a valve body insertion hole 5 into which a cylindrical valve body described later is inserted is provided. A cylindrical valve body 7 having a hollow chamber 71 is rotatably inserted in the valve body insertion hole 5, and the hollow chamber 71 of the valve body 7 has a communication passage 72 provided in the valve body 7. It is configured to communicate with the main chamber 2 via the. In addition,
The site where the exhaust port 4 is provided is not limited to the example shown in the drawings, but may be provided in the axial direction of the valve body 7 as shown by the phantom line in FIG. 1, for example.

In the figure, 8 is a hole for communicating the hollow chamber 71 of the valve body 6 with the air supply / exhaust port 4, 9 is a cylinder liner, 10
Is a bearing, 11 is a sealing device, 12 and 12a are oil passages, and 13 is a spark plug. In the figure, 2a is a hole in the main chamber 2, and the hole 2a is combined with the communication passage 72 to form a supply / exhaust passage. Reference numeral 73 denotes a rotary medium such as a pulley and a sprocket provided at one end of the valve body 6, and the rotary medium 73 drives a crankshaft pulley of the cylinder (not shown) and other vehicle rotary shafts via a winding medium. Connected to the medium. In addition, 100 is the main room 2
It is a combustion chamber formed in.

A sealing device 1 for sealing the communication passage 72 is provided.
In the case where the sealing device 11 is attached to the valve body insertion hole 5 of the cylinder head 6 as shown in FIGS. 1 and 2, the side surface of the valve body insertion hole 5 of the cylinder head 6 is sealed. Left and right side seals 111 and 112 formed of a pair of rings
And a pair of upper and lower side seals 113 and 114 that seal the valve body insertion hole 5 in the longitudinal direction (the longitudinal direction of the valve body 7). In other words, the communication passage 72 of the valve body 7 is It surrounds and seals between the communication passage 72 and the main chamber 2. Further, as shown in FIGS. 3 to 6, in the case of the structure attached to the valve body 7, a pair of annular left and right parts provided with an inflexible member 115 such as a spring or rubber for sealing the side surface of the communication hole 72 of the valve body 7. Side seal 111
a, 112a (as described later, auxiliary seal 111b,
There may be a case where 112b is provided. ) And the communication hole 72
And a pair of upper and lower side seals 113a and 114a for sealing the longitudinal direction (longitudinal direction of the valve body 7) of the valve body 7. In other words, the communicating passage 72 of the valve body 7 is surrounded by the communicating passage 72 and the main chamber. Seal between the two. Of course, the configuration of the sealing device 11 is an example. Incidentally, the left and right side seals 111a, 112
When the auxiliary seals 111b and 112b are provided inside a, the seals 111b and 112b are pressed,
It is inserted into the seal grooves 111b1 and 112b1. A so-called press-fit type seal structure is used.

[0011]

As described in detail above, according to the present invention, a cylinder-shaped valve element is rotatably provided in a cylinder head, and the hollow chamber of the valve element and the main chamber of the cylinder block are connected via a communication passage. The structure is such that the main chamber is supplied with air through the hole for supply and exhaust of the valve body, the hollow chamber, and the communication passage, and the main chamber through the hole of the main chamber (exhaust is the reverse process). Since such a structure, the effect of simplifying the supply / exhaust device and reducing the number of parts, etc., the effect of achieving smooth control of supply / exhaust gas, and the improvement of combustion efficiency and output torque, Etc. can be expected. Further, the supply / exhaust valve can be omitted and an effect based on this omission can be obtained, for example, a practical effect that is useful for reducing the number of parts and avoiding wear, complication of action, and the like.

[Brief description of drawings]

FIG. 1 is a sectional view of a first invention.

FIG. 2 is a side sectional view of the first invention.

FIG. 3 is a sectional view of the second invention.

FIG. 4 is a side sectional view of the second invention.

FIG. 5 is a front view of the sealing device of the second invention.

FIG. 6 is an enlarged cross-sectional view of a portion A of the sealing device of the second invention.

[Explanation of symbols]

 1 Cylinder Block 2 Main Chamber 3 Piston 4 Air Supply / Exhaust Port 5 Valve Body Insertion Hole 6 Cylinder Head 7 Valve Body 71 Hollow Chamber 72 Communication Passage 73 Rotating Medium 8 Hole 9 Cylinder Liner 10 Bearing 11 Sealing Device 111 Right Side Seal 111a Right Side Seal 111b1 Seal groove 111b Seal 112 Left seal 112a Left seal 112b Seal 112b1 Seal groove 113 Upper seal 113a Upper seal 114 Lower seal 114a Lower seal 115 Flexible member 12 Oil passage 12a Oil passage 13 Spark plug

Claims (3)

[Claims] 1. A cylinder block having a piston,
An internal combustion engine comprising a cylinder head provided with an ignition plug arranged on the cylinder block, wherein a pair of cylindrical valve bodies having a hollow chamber are arranged in the cylinder head of the internal combustion machine. One of the hollow chambers of the valve body communicates with the air supply / exhaust ports provided in the cylinder head, and the other of the hollow chambers communicates with the main chamber of the cylinder block, and is provided at one end of each valve body. An internal combustion engine configured such that each rotary medium is connected to a crankshaft pulley of the cylinder and other drive mediums of a vehicle rotary shaft through a winding medium such as a belt or a chain. 2. An internal combustion engine in which a seat device is provided between the cylinder head and the valve body according to claim 1. 3. The internal combustion engine according to claim 2, wherein the seat device includes upper and lower seals, left and right seals, and a press-fit type seal provided inside the left and right seals.