JPH11236821A - Method for setting real expansion ratio larger than real compression ratio, when piston valve and rotary valve are used for four cycle, six cycle, eight cycle, ten cycle and more cycle engines - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the utilization efficiency of a generation energy by providing a valve opened at a lower dead point in a compression process and closed before the generation of a rotation resistance by the excessive expansion caused by the explosion of a mixed gas or air in an expansion process. SOLUTION: In 4,6 and 8 cycle or 10 cycle or more engines, an intake valve 1 exclusively used for a mixed gas opened at an upper dead point and closed at a lower dead point in an intake process is provided. A valve 2 opened at the lower dead point in a compression process and closed before the generation of a rotation resistance by the excessive expansion caused by the explosion of the mixed gas in an expansion process is provided. Further, an exhaust valve (c) closed in the intake process is provided. In the compression process-1, it is controlled so that the valve l is closed, the valve 2 is closed at the point of time when a piston is lfted by one third from the lower dead point and the valve (c) is closed and in the succeeding compression process-2 (ignition), the valves 1-3 are closed and the mixed gas is compressed and ignited. In the exhaust process, the exhaust is carried out by closing the valves 1, 2 and opening the valve 3 at the lower dead point.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a four-cycle engine (a four-cycle gasoline engine, a four-cycle diesel engine, and a direct injection four-cycle gasoline engine), a six-cycle engine [[a diesel engine and a gasoline engine, 6 cycle engine. (Patent Application No. 417964 of 1990)] and [6-cycle diesel engine. (1996 Patent Application No. 140582
No.) and [6-cycle gasoline engine. (1996 Patent Application No. 151453)] and [In-cylinder 6-cycle gasoline engine. (1996 Patent Application No. 172736
No.)], 8-cycle engine [[8-cycle diesel engine. (1997 Patent Application No. 91265)],
[In-cylinder injection 8-cycle gasoline engine. (1997 patent application No. 129090)] and [8-cycle gasoline engine. (1997 Patent Application No. 184308)]｝, 1
0 cycle or more engine [10 cycle or more of gasoline engine, diesel engine, and direct injection gasoline engine. (1997 Patent Application No. 274908
No.)], a piston valve (reciprocating valve), a rotary valve ｛a rotary valve [a rotary valve used in a 4-cycle engine or a 6-cycle engine, which replaces a piston valve. (1991 Patent Application No. 356145)] and [Rotary valve instead of reciprocating valve. (1996 Patent Application No. 17972
No. 6)] relates to a method of obtaining a real expansion ratio larger than a real compression ratio when｝ is used.

[0002] The present invention also relates to a destination of an air-fuel mixture or air generated when a real expansion ratio is made larger than a real compression ratio.

[0003]

2. Description of the Related Art Conventionally, when a piston valve and a rotary valve are used in a 4-cycle engine, a 6-cycle engine, an 8-cycle engine, and an engine having 10 or more cycles, a compression ratio = expansion ratio is theoretically obtained. Was.

[0004]

SUMMARY OF THE INVENTION Conventional four-stroke engines, six-stroke engines, eight-stroke engines,
In the process of using a piston valve and a rotary valve for an engine with zero or more cycles, (Really,
Valve timing is different. ) Since the compression ratio = expansion ratio, the energy (power, torque) generated by the explosion (combustion) during the expansion process is sufficient for the piston and
There was a problem in that the gas was transferred to the exhaust process without being transmitted to the crankshaft, and the energy generated by the explosion was discharged.

According to the present invention, when a piston valve and a rotary valve are used in a 4-cycle engine, a 6-cycle engine, an 8-cycle engine, and an engine having 10 or more cycles, the true expansion ratio is more than the true compression ratio. The purpose is to obtain a large-capacity method, and further to obtain the destination of an air-fuel mixture or air generated when the method is used.

[0006]

In order to achieve the above object, a four-stroke engine, a six-stroke engine, an eight-stroke engine, and an engine having ten or more cycles according to the present invention employ a piston valve and a rotary valve. In the method that takes the real expansion ratio larger than the real compression ratio, the valve opens at the bottom dead center during the compression process, and the air-fuel mixture or air expands due to the explosion during the expansion process. Provide a valve (piston valve) and air port (rotary valve) that close before the rotation becomes too resistive (atmospheric pressure becomes 1 or less).

[0007] The air-fuel mixture or air that has entered the above-mentioned valve and air port is returned to the intake pipe dedicated to the air-fuel mixture, and the air is returned to the intake pipe.

[0008]

The four-stroke engine constructed as described above,
In a method that takes a real expansion ratio larger than a real compression ratio when a piston valve or a rotary valve is used for a 6-cycle engine, an 8-cycle engine, and an engine of 10 cycles or more, in the compression process, A valve that opens at bottom dead center and closes during the expansion process before the air-fuel mixture or air expands too much due to the explosion and becomes resistant to rotation;
By providing a vent, a process where the true compression ratio <expansion ratio can be performed.

In addition, the air-fuel mixture or air entering the valve or the air port is returned to the intake pipe dedicated to the air-fuel mixture, and the air is returned to the intake pipe. Or, the force by which air is pushed out of the cylinder can be changed during the intake process, albeit slightly, into part of the mixture or air pushing force into the cylinder.

In particular, in the case of a gasoline engine, the fuel-air mixture is reduced, so that fuel is not wasted.

[0011]

Embodiments will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing the arrangement of a valve and a plug in a method in which a real expansion ratio is made larger than a real compression ratio when a piston valve is used in a four-cycle gasoline engine. Yes, the point is, an intake valve dedicated to air-fuel mixture,
During the compression process, the valve, the exhaust valve, and the plug are shown that open at the bottom dead center and close during the expansion process, before the air-fuel mixture expands too much due to the explosion and becomes a resistance to rotation. Things.

In the embodiment shown in FIGS. 2 to 6, FIG.
A vertical section showing the process of a method of taking a real expansion ratio larger than a real compression ratio when a piston valve is used in a 4-cycle gasoline engine, assuming that it is viewed vertically from the side FIG. 2 to FIG. 6 show the intake process of the mixture. The intake valve dedicated to the mixture is opened at the top dead center and closed at the bottom dead center. At this time, the valve that closes before the air-fuel mixture expands too much due to the explosion and becomes a resistance to rotation, and the exhaust valve are closed. (Hereinafter, the intake valve dedicated to the air-fuel mixture is the valve a, which opens at the bottom dead center in the compression process, and the air-fuel mixture expands too much due to the explosion in the expansion process, and the resistance to rotation The valve that closes before becoming valve b,
The exhaust valve is a valve c. FIG. 3 Compression Step-1 Valve a is closed, valve b is closed when the piston rises by one third from bottom dead center, and valve c is closed. (Valve b shown in FIG. 3 is a view immediately before closing.) FIG. 4 Compression step-2 (ignition) Valve a, valve b, and valve c are closed. FIG. 5 Expansion process Valve a, valve b, and valve c are closed. FIG. 6 Exhaust Process Valves a and b are closed, and valve c is opened at the bottom dead center and closed at the top dead center. It is.

The numbers of valves and plugs shown in FIGS. 1 to 6 are the minimum required numbers.
Timing is not included to facilitate understanding of the movement of each valve in each step, and each step is a diagram immediately before completion.

Further, when each valve is open, it is a view immediately before closing, and the figure of the process immediately before each open valve is:
It is a figure just before opening.

Then, a 6-cycle gasoline engine, 8
Although a diagram of a cycle gasoline engine and a gasoline engine of 10 cycles or more is not drawn, a diagram of each process can be drawn by using an intake valve dedicated to air.

Although a drawing of the above-mentioned engine when a rotary valve is used is not shown, the rotary valve is replaced with a piston valve used in an H type, ｛[4 cycle engine, 6 cycle engine. , Rotary valve. (1991 Patent Application No. 356145)]
[A method of intake and exhaust of a rotary valve used in a 4-cycle engine and a 6-cycle engine. (Heisei 4
Patent Application No. 218116)] and [instead of a reciprocating valve,
Rotary valve. (1996 Patent Application No. 179726)], and if each vent is provided, a diagram of the process of each engine can be drawn.

Further, when a piston valve and a rotary valve are used in a diesel engine, a direct injection gasoline engine, a 4-cycle engine, a 6-cycle engine, an 8-cycle engine, and an engine having 10 or more cycles, the above-described engine is used. Although the diagram of the process is not drawn, the plug is changed to a fuel injector or a plug and a fuel injector, and in the case of a 4-cycle engine, the intake valve dedicated to the air-fuel mixture and the intake port are simply intake valves. In the case of a 6-cycle engine, an 8-cycle engine, and an engine with 10 or more cycles, an intake valve and an intake port dedicated to the air-fuel mixture,
Combine the intake valve and intake port exclusively for air into the first and second
Inlet valve for the second time, where the first and second inlets are,
Or, the first, second and third intake valves, the first, second and third intake ports, or the first and second and third and fourth or more intake valves, The second, third, fourth, and fourth places have more air inlets.
You can draw a diagram of each engine process.

In short, all engines open at the bottom dead center during the compression process, and the air-fuel mixture or air
A valve or vent that closes before it becomes too resistive to rotate due to an explosion.

Further, the air-fuel mixture entering the valve b shown in FIGS. 1 and 2 is returned to the intake pipe dedicated to the air-fuel mixture, but the arrangement of the valves and plugs is not related to this patent. .

In the compression process of another engine,
A valve that opens at bottom dead center and closes before the air-fuel mixture or air expands too much to resist rotation during the expansion process. It is better to return to the intake pipe or the intake pipe.

[0021]

Since the present invention is configured as described above, it has the following effects.

When a piston valve and a rotary valve are used in a 4-cycle engine, a 6-cycle engine, an 8-cycle engine, and an engine having 10 cycles or more,
Due to the provision of valves and vents that open at the bottom dead center during the compression process and close before the air-fuel mixture or air expands too much due to the explosion and becomes rotational resistance during the expansion process, A process where the true compression ratio <expansion ratio can be performed.

In addition, the fact that the process where the compression ratio <the expansion ratio can be performed means that the same amount of fuel is consumed, and the energy (power, power,
Torque) can be transmitted to the piston and crankshaft, a little more than in conventional engines.

[0024] In addition, being able to transmit as much energy as possible from the explosion to the piston and the crankshaft leads to effective utilization of energy.

The fact that the energy is effectively used also leads to resource saving and energy saving.

Further, a valve or vent that opens at the bottom dead center during the compression process and closes before the air-fuel mixture or air expands excessively due to the explosion and becomes rotationally resistant during the expansion process. The air-fuel mixture or air that has entered is returned to the air-intake pipe or air-intake pipe dedicated to the air-fuel mixture, so that the air-fuel mixture or air is forced out of the cylinder during the compression process. During the intake process (in the case of a gasoline engine, the mixture intake process, and in the case of a diesel engine and in-cylinder gasoline engine, the next intake process when the number of valves and ports is minimized) Air or air can be converted into part of the force pushing into the cylinder.

Also, during the compression step, the force of the mixture or air being pushed out of the cylinder is equal to the force of pushing the mixture or the air into the cylinder during the suction step. Being a department leads to energy savings.

Particularly, in the case of a gasoline engine, the air-fuel mixture is returned to the intake pipe dedicated to the air-fuel mixture, so that fuel is not wasted and resources are saved.

Further, by using the engine as described above, the same type (four-cycle gasoline engine is a four-cycle gasoline engine, and the in-cylinder eight-cycle gasoline engine is a cylinder) An internal-injection eight-cycle gasoline engine.), Which emits less gas (exhaust gas) after a true explosion, leads to lower pollution.

A valve or vent that opens at the bottom dead center during the compression process and closes before the air-fuel mixture or air expands excessively due to the explosion and becomes rotationally resistant during the expansion process. By adjusting the size of the valve, at the time of low rotation, the valve, mouth,
The air-fuel mixture or air is exhausted, and at high rotations, the air-fuel mixture or air cannot follow the exhaust of the valve or the port, so that low rotation, high rotation and compression The actual amount of air-fuel mixture or air in the cylinder at the time of the process changes, and an engine that emphasizes combustion efficiency at low revolutions and power and torque at high revolutions can be made.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a valve and plug arrangement when a piston valve is used in a four-stroke gasoline engine and a real expansion ratio is set to be larger than a real compression ratio. FIG.

FIG. 2 is a longitudinal sectional view showing the step of FIG. 1; (Air mixture intake process)

FIG. 3 is a vertical sectional view showing the step of FIG. 1; (Compression process-1)

FIG. 4 is a vertical sectional view showing the step of FIG. 1; [Compression process-2 (ignition)]

FIG. 5 is a longitudinal sectional view showing the step of FIG. 1; (Expansion process)

FIG. 6 is a vertical sectional view showing the step of FIG. 1; (Exhaust process)

[Explanation of symbols]

1 Intake valve (valve a) dedicated to air-fuel mixture 2 Open at bottom dead center during compression process, and during expansion process, air-fuel mixture expands too much due to explosion and becomes rotational resistance (atmospheric pressure is 1 The valve that closes before (valve b) 3 Exhaust valve (valve c) 4 Plug 5 Vaporizer 6 Intake pipe dedicated to air-fuel mixture 7 Passage connecting valve b to intake pipe dedicated to air-fuel mixture 8 Exhaust pipe 9 Piston 10 Valve b and valve c

[Procedure amendment]

[Submission date] May 21, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] When a piston valve and a rotary valve are used in a 4-cycle engine, a 6-cycle engine, an 8-cycle engine, and an engine having 10 or more cycles, the real expansion ratio is made larger than the real compression ratio. Method.

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a four-cycle engine (a four-cycle gasoline engine, a four-cycle diesel engine, and a direct injection four-cycle gasoline engine), a six-cycle engine [[a diesel engine and a gasoline engine, 6 cycle engine. (Patent Application No. 417964 of 1990)] and [6-cycle diesel engine. (1996 Patent Application No. 140582
No.) and [6-cycle gasoline engine. (1996 Patent Application No. 151453)] and [In-cylinder 6-cycle gasoline engine. (1996 Patent Application No. 172736
No.)], 8-cycle engine [[8-cycle diesel engine. (1997 Patent Application No. 91265)],
[In-cylinder injection 8-cycle gasoline engine. (1997 patent application No. 129090)] and [8-cycle gasoline engine. (1997 Patent Application No. 184308)]｝, 1
0 cycle or more engine [10 cycle or more of gasoline engine, diesel engine, and direct injection gasoline engine. (1997 Patent Application No. 274908
No.)], a piston valve (reciprocating valve), a rotary valve ｛a rotary valve [a rotary valve used in a 4-cycle engine or a 6-cycle engine, which replaces a piston valve. (1991 Patent Application No. 356145)] and [Rotary valve instead of reciprocating valve. (1996 Patent Application No. 17972
No. 6)] relates to a method of obtaining a real expansion ratio larger than a real compression ratio when｝ is used.

[0002] The present invention also relates to a destination of an air-fuel mixture or air generated when a real expansion ratio is made larger than a real compression ratio.

[0003]

2. Description of the Related Art Conventionally, when a piston valve and a rotary valve are used in a 4-cycle engine, a 6-cycle engine, an 8-cycle engine, and an engine having 10 or more cycles, a compression ratio = expansion ratio is theoretically obtained. Was.

[0004]

SUMMARY OF THE INVENTION Conventional four-stroke engines, six-stroke engines, eight-stroke engines,
In the process of using a piston valve and a rotary valve for an engine with zero or more cycles, (Really,
Valve timing is different. ) Since the compression ratio = expansion ratio, the energy (power, torque) generated by the explosion (combustion) during the expansion process is sufficient for the piston and
There was a problem in that the gas was transferred to the exhaust process without being transmitted to the crankshaft, and the energy generated by the explosion was discharged.

According to the present invention, when a piston valve and a rotary valve are used in a 4-cycle engine, a 6-cycle engine, an 8-cycle engine, and an engine having 10 or more cycles, the true expansion ratio is more than the true compression ratio. The purpose is to obtain a large-capacity method, and further to obtain the destination of an air-fuel mixture or air generated when the method is used.

[0006]

In order to achieve the above object, a four-stroke engine, a six-stroke engine, an eight-stroke engine, and an engine having ten or more cycles according to the present invention employ a piston valve and a rotary valve. In the method that takes the real expansion ratio larger than the real compression ratio, the valve opens at the bottom dead center during the compression process, and the air-fuel mixture or air expands due to the explosion during the expansion process. Provide a valve (piston valve) and air port (rotary valve) that close before the rotation becomes too resistive (atmospheric pressure becomes 1 or less).

[0007] The air-fuel mixture or air that has entered the above-mentioned valve and air port is returned to the intake pipe dedicated to the air-fuel mixture, and the air is returned to the intake pipe.

[0008]

The four-stroke engine constructed as described above,
In a method that takes a real expansion ratio larger than a real compression ratio when a piston valve or a rotary valve is used for a 6-cycle engine, an 8-cycle engine, and an engine of 10 cycles or more, in the compression process, A valve that opens at bottom dead center and closes during the expansion process before the air-fuel mixture or air expands too much due to the explosion and becomes resistant to rotation;
By providing a vent, a process where the true compression ratio <expansion ratio can be performed.

In addition, the air-fuel mixture or air entering the valve or the air port is returned to the intake pipe dedicated to the air-fuel mixture, and the air is returned to the intake pipe. Or, the force by which air is pushed out of the cylinder can be changed during the intake process, albeit slightly, into part of the mixture or air pushing force into the cylinder.

In particular, in the case of a gasoline engine, the fuel-air mixture is reduced, so that fuel is not wasted.

[0011]

Embodiments will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing the arrangement of a valve and a plug in a method in which a real expansion ratio is made larger than a real compression ratio when a piston valve is used in a four-cycle gasoline engine. Yes, the point is, an intake valve dedicated to air-fuel mixture,
During the compression process, the valve, the exhaust valve, and the plug are shown that open at the bottom dead center and close during the expansion process, before the air-fuel mixture expands too much due to the explosion and becomes a resistance to rotation. Things.

In the embodiment shown in FIGS. 2 to 6, FIG.
A vertical section showing the process of a method of taking a real expansion ratio larger than a real compression ratio when a piston valve is used in a 4-cycle gasoline engine, assuming that it is viewed vertically from the side FIG. 2 to FIG. 6 show the intake process of the mixture. The intake valve dedicated to the mixture is opened at the top dead center and closed at the bottom dead center. At this time, the valve that closes before the air-fuel mixture expands too much due to the explosion and becomes a resistance to rotation, and the exhaust valve are closed. (Hereinafter, the intake valve dedicated to the air-fuel mixture is the valve a, which opens at the bottom dead center in the compression process, and the air-fuel mixture expands too much due to the explosion in the expansion process, and the resistance to rotation The valve that closes before becoming valve b,
The exhaust valve is a valve c. FIG. 3 Compression Step-1 Valve a is closed, valve b is closed when the piston rises by one third from bottom dead center, and valve c is closed. (Valve b shown in FIG. 3 is a view immediately before closing.) FIG. 4 Compression step-2 (ignition) Valve a, valve b, and valve c are closed. FIG. 5 Expansion process Valve a, valve b, and valve c are closed. FIG. 6 Exhaust Process Valves a and b are closed, and valve c is opened at the bottom dead center and closed at the top dead center. It is.

The numbers of valves and plugs shown in FIGS. 1 to 6 are the minimum required numbers.
Timing is not included to facilitate understanding of the movement of each valve in each step, and each step is a diagram immediately before completion.

Further, when each valve is open, it is a view immediately before closing, and the figure of the process immediately before each open valve is:
It is a figure just before opening.

Then, a 6-cycle gasoline engine, 8
Although a diagram of a cycle gasoline engine and a gasoline engine of 10 cycles or more is not drawn, a diagram of each process can be drawn by using an intake valve dedicated to air.

Although a drawing of the above-mentioned engine when a rotary valve is used is not shown, the rotary valve is replaced with a piston valve used in an H type, ｛[4 cycle engine, 6 cycle engine. , Rotary valve. (1991 Patent Application No. 356145)]
[A method of intake and exhaust of a rotary valve used in a 4-cycle engine and a 6-cycle engine. (Heisei 4
Patent Application No. 218116)] and [instead of a reciprocating valve,
Rotary valve. (1996 Patent Application No. 179726)], and if each vent is provided, a diagram of the process of each engine can be drawn.

Further, when a piston valve and a rotary valve are used in a diesel engine, a direct injection gasoline engine, a 4-cycle engine, a 6-cycle engine, an 8-cycle engine, and an engine having 10 or more cycles, the above-described engine is used. Although the diagram of the process is not drawn, the plug is changed to a fuel injector or a plug and a fuel injector, and in the case of a 4-cycle engine, the intake valve dedicated to the air-fuel mixture and the intake port are simply intake valves. In the case of a 6-cycle engine, an 8-cycle engine, and an engine with 10 or more cycles, an intake valve and an intake port dedicated to the air-fuel mixture,
Combine the intake valve and intake port exclusively for air into the first and second
Inlet valve for the second time, where the first and second inlets are,
Or, the first, second and third intake valves, the first, second and third intake ports, or the first and second and third and fourth or more intake valves, The second, third, fourth, and fourth places have more air inlets.
You can draw a diagram of each engine process.

In short, all engines open at the bottom dead center during the compression process, and the air-fuel mixture or air
A valve or vent that closes before it becomes too resistive to rotate due to an explosion.

Further, the air-fuel mixture entering the valve b shown in FIGS. 1 and 2 is returned to the intake pipe dedicated to the air-fuel mixture, but the arrangement of the valves and plugs is not related to this patent. .

In the compression process of another engine,
A valve that opens at bottom dead center and closes before the air-fuel mixture or air expands too much to resist rotation during the expansion process. It is better to return to the intake pipe or the intake pipe.

[0021]

Since the present invention is configured as described above, it has the following effects.

When a piston valve and a rotary valve are used in a 4-cycle engine, a 6-cycle engine, an 8-cycle engine, and an engine having 10 cycles or more,
Due to the provision of valves and vents that open at the bottom dead center during the compression process and close before the air-fuel mixture or air expands too much due to the explosion and becomes rotational resistance during the expansion process, A process where the true compression ratio <expansion ratio can be performed.

In addition, the fact that the process where the compression ratio <the expansion ratio can be performed means that the same amount of fuel is consumed, and the energy (power, power,
Torque) can be transmitted to the piston and crankshaft, a little more than in conventional engines.

[0024] In addition, being able to transmit as much energy as possible from the explosion to the piston and the crankshaft leads to effective utilization of energy.

The fact that the energy is effectively used also leads to resource saving and energy saving.

Further, a valve or vent that opens at the bottom dead center during the compression process and closes before the air-fuel mixture or air expands excessively due to the explosion and becomes rotationally resistant during the expansion process. The air-fuel mixture or air that has entered is returned to the air-intake pipe or air-intake pipe dedicated to the air-fuel mixture, so that the air-fuel mixture or air is forced out of the cylinder during the compression process. During the intake process (in the case of a gasoline engine, the mixture intake process, and in the case of a diesel engine and in-cylinder gasoline engine, the next intake process when the number of valves and ports is minimized) Air or air can be converted into part of the force pushing into the cylinder.

Also, during the compression step, the force of the mixture or air being pushed out of the cylinder is equal to the force of pushing the mixture or the air into the cylinder during the suction step. Being a department leads to energy savings.

Particularly, in the case of a gasoline engine, the air-fuel mixture is returned to the intake pipe dedicated to the air-fuel mixture, so that fuel is not wasted and resources are saved.

Further, by using the engine as described above, the same type (four-cycle gasoline engine is a four-cycle gasoline engine, and the in-cylinder eight-cycle gasoline engine is a cylinder) An internal-injection eight-cycle gasoline engine.), Which emits less gas (exhaust gas) after a true explosion, leads to lower pollution.

A valve or vent that opens at the bottom dead center during the compression process and closes before the air-fuel mixture or air expands excessively due to the explosion and becomes rotationally resistant during the expansion process. By adjusting the size of the valve, at the time of low rotation, the valve, mouth,
The air-fuel mixture or air is exhausted, and at high rotations, the air-fuel mixture or air cannot be attached to the exhaust of the valve and the port, so that low rotation, high rotation and compression The actual amount of air-fuel mixture or air in the cylinder at the time of the process changes, and an engine that emphasizes combustion efficiency at low revolutions and power and torque at high revolutions can be made.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a valve and plug arrangement when a piston valve is used in a four-stroke gasoline engine and a real expansion ratio is set to be larger than a real compression ratio. FIG.

FIG. 2 is a longitudinal sectional view showing the step of FIG. 1; (Air mixture intake process)

FIG. 3 is a vertical sectional view showing the step of FIG. 1; (Compression process-1)

FIG. 4 is a vertical sectional view showing the step of FIG. 1; [Compression process-2 (ignition)]

FIG. 5 is a longitudinal sectional view showing the step of FIG. 1; (Expansion process)

FIG. 6 is a vertical sectional view showing the step of FIG. 1; (Exhaust process)

[Description of Signs] 1 Intake valve (valve a) exclusively for air-fuel mixture 2 Open at bottom dead center during compression process, and during expansion process, air-fuel mixture expands too much due to explosion and resists rotation. Valve (valve b) 3 exhaust valve (valve c) 4 plug 5 carburetor 6 intake pipe dedicated to air-fuel mixture 7 valve b and intake pipe dedicated to air-fuel mixture Connecting passage 8 Exhaust pipe 9 Piston 10 Valve b and valve c

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 4

FIG. 3

FIG. 5

FIG. 6

 ──────────────────────────────────────────────────続 き Continuation of the front page (54) [Title of Invention] From the actual compression ratio when using a piston valve and a rotary valve for a 4-cycle engine, a 6-cycle engine, an 8-cycle engine, and an engine with 10 or more cycles Also, a method to increase the true expansion ratio.

Claims (2)

[Claims] 1. A four-cycle engine (a four-cycle gasoline engine, a four-cycle diesel engine, and a direct injection four-cycle gasoline engine), a six-cycle engine (a diesel engine and a gasoline engine,
6 cycle engine. (1990 Patent Application No. 417964
No.) and [6-cycle diesel engine. (Heisei 8
Patent application No. 140582)] and [6-cycle gasoline engine. (1996 Patent Application No. 151453)]
[In-cylinder injection 6 cycle gasoline engine. (Heisei 8
Patent Application No. 172736)]}, 8-cycle engine {[8-cycle diesel engine. (1997 Patent Application No. 91265)] and [In-cylinder 8-cycle gasoline engine. (1997 patent application No. 129090)],
[8-cycle gasoline engine. (1997 Patent Application No. 1
No. 84308)]｝ 10-cycle or more engine [10-cycle or more engine of gasoline engine, diesel engine, and direct injection gasoline engine. (Heisei 9
Patent Application No. 274908)], a piston valve, a rotary valve {[a rotary valve used for a 4-cycle engine or a 6-cycle engine, which replaces the piston valve. (1991 Patent Application No. 356145)]
And [Rotary valve instead of reciprocating valve. (1996 Patent Application No. 1
No. 79726)], it opens at the bottom dead center in the compression step, and the air-fuel mixture or air expands too much due to the explosion (combustion) in the expansion step (atmospheric pressure of 1). A valve that closes (piston valve) and a vent (rotary valve) are provided before the rotation resistance is reached. 2. The valve according to claim 1, wherein the air-fuel mixture or air entering the air port is returned to the intake pipe dedicated to the air-fuel mixture, and the air is returned to the intake pipe.