JP5636596B2 - Exhaust gas intake compression injection engine - Google Patents

Description

The present invention relates to a technique for improving the fuel efficiency of an engine.

The technology for improving the fuel efficiency of conventional engines is to increase the ratio of air to the fuel of the mixture and increase the compression ratio of the mixture with the piston, but if the ratio of air is increased, nitrogen oxidation As the amount of materials increases, the exhaust gas circulation system circulates exhaust gas into the cylinder and burns it again to reduce nitrogen oxides.

JP2009-62975A JP2009-191623A

Reducing engine fuel consumption and reducing nitrogen oxides to the extent that horsepower and torque do not drop at a compression ratio of 8 to 11 of a normal short stroke engine without using a high compression engine with a long piston stroke. Was an issue.

Usually, to improve the fuel efficiency of the engine, it is said that it is better to ignite by increasing the ratio of air in the mixture and decreasing the ratio of fuel to highly compress the mixture in the cylinder, but the compression ratio is 15 or more. If this is the case, the piston is near the top dead center, the combustion chamber becomes hot and high pressure, and knocking occurs due to spontaneous ignition.

In the same way as a diesel engine, the method of directly injecting fuel by highly compressing air is the direct injection of gasoline, and when exposed to ignition, explosion, or combustion, it is exposed to abnormally high temperature and high pressure, and the mouth of the exhaust port in contact with the exhaust valve Therefore, the countermeasure was taken as an issue.

Also, in general gasoline engines, if the ratio of air in the mixture with gasoline is increased, nitrogen oxides increase, so in conventional engines, a certain amount of exhaust gas is taken into the cylinder together with the air when taking in air from the intake port. There was an exhaust gas circulation system that reduced nitrogen oxides by putting it in and burning it, and the question was how to use the exhaust gas.

According to a first aspect of the present invention, in an engine having multiple cylinders, an exhaust gas compression cylinder (3) for injecting compressed exhaust gas in one engine block and an engine cylinder (2) for generating power by explosive combustion in the adjacent direction The exhaust gas compression cylinder (3) provided for introducing exhaust gas into the cylinder (5) of the engine cylinder (2) is connected to an exhaust gas intake port (19) provided in the cylinder head (6). A gas intake manifold (20) is provided, exhaust gas is taken from the exhaust gas intake manifold (20), and when the piston (4) reaches from the top dead center to the bottom dead center, the exhaust gas is sucked into the cylinder (5). Compress the exhaust gas from bottom dead center to top dead center,

Retention chamber (3-1) of cylinder head (6) above cylinder (5) of exhaust gas compression cylinder (3) and combustion chamber of cylinder head (6) above cylinder (5) of engine cylinder (2) Whether the compressed exhaust gas passage (7) through which the compressed exhaust gas connecting (2-1) passes is provided on the cylinder head (6) side, and the vent valve (22) is provided in the middle of the vent passage (7). Alternatively, when the vent valve (22) is provided near the end of the vent passage (7) of the combustion chamber of the engine cylinder (2) or in the compressed exhaust gas injection hole (7-2) and these valves are closed. Is for blocking the flow of the compressed exhaust gas of the exhaust gas compression cylinder (3) from the compressed exhaust gas passage (7) to the engine cylinder (2) and for the backflow of the combustion gas of the engine cylinder (2). Prevent,

When the air vent valve (22) is opened, the exhaust gas at the top dead center of the piston (4) of the exhaust gas compression cylinder (3) is supplied to the intake port (in the intake stroke (5) of the engine cylinder (2)). 15) The piston (4) after intake of air and fuel injected from the fuel injection device (26) is injected from the vicinity of the end of the intake stroke near the bottom dead center to the start of the compression stroke. An ignition plug that compresses the air, fuel, and exhaust gas mixture by injection of compressed exhaust gas into the cylinder (5) of the engine cylinder (2) by the piston (4), ignites, burns, and exhausts by the spark plug. 4-cycle engine type or with, or the vent engine piston (4) compressing the exhaust gas in the top dead center of the exhaust gas compression cylinder (3) by a valve (22) is opened From the end of the intake stroke when the piston (4) after the intake of air from the intake port (15) of the cylinder (2) in the cylinder (2) is near the bottom dead center to the start of the compression stroke The mixture of the air that has entered the cylinder (5) of the engine cylinder (2) by the injection and the exhaust gas resulting from the injection of the compressed exhaust gas is compressed by the piston (4), and the fuel is directly injected by the fuel injection device (26). This is an exhaust gas suction compression injection engine characterized by a four-cycle diesel engine system that ignites, burns, and exhausts by the above-mentioned means.

According to a second aspect of the present invention, an engine having multiple cylinders in one engine block is made up of a set of three cylinders, and the middle cylinder is defined as an exhaust gas compression cylinder (3) for compressing exhaust gas, and the cylinders on both sides thereof are engine cylinders. (2) As a compression stroke from near the end of the intake stroke near the bottom dead center of the piston (4) in the cylinder (5) of the engine cylinder (2) on both sides from the exhaust gas compression cylinder (3) of the compressor 2. An exhaust gas intake compression injection engine according to claim 1, wherein the exhaust gas is sent by alternately injecting compressed exhaust gas until near the beginning of the engine.

According to claim 3, the exhaust gas intake port (19) of the cylinder head (6) of the exhaust gas compression cylinder (3) is provided on the same side as the exhaust port (17) of the engine cylinder (2), and the engine cylinder (2) An exhaust gas intake manifold (20) is provided between the exhaust manifold (18) connected to the exhaust port (17) of the exhaust gas and the exhaust gas intake port (19) of the cylinder head (6) of the exhaust gas compression cylinder (3). The exhaust gas entering the cylinder of the exhaust gas compression cylinder (3) is sucked when the piston (4) reaches from the top dead center to the bottom dead center, so that the exhaust manifold of the engine cylinder (2) From the exhaust gas intake manifold (20) of the exhaust gas compression cylinder (3) connected to (18) through the exhaust gas intake port (19) and into the cylinder (5) It becomes,

When it is desired to mix air with the exhaust gas entering the cylinder (5) of the exhaust gas compression cylinder (3), an air pipe (23) is inserted from the outside of the exhaust gas intake manifold (20) into the internal air passage. The air outlet side of the air pipe (23) is placed in the exhaust gas intake manifold (20) and brought close to the exhaust gas intake port (19) of the cylinder head (6), or the exhaust gas intake port (19 ), And an air flow restrictor (24) is provided on the way from the exhaust gas intake manifold (20) to the air inlet of the air pipe (23) to the outside. The exhaust gas of the exhaust gas intake manifold (20) during the intake stroke of the piston is adjusted according to the negative pressure when entering the cylinder (5) from the exhaust gas intake port (19). An exhaust gas intake compression injection engine according to any one of claims 1 2 to the hole of the tip air outlet of the air pipe (23), characterized in that the air to the jet, means the It was.

As a fourth aspect, the compressed exhaust gas injection hole (7-2) provided in the combustion chamber (2-1) of the cylinder head (6) of the engine cylinder (2) and the cylinder head (6) of the exhaust gas compression cylinder (3) are provided. ) Is provided on the cylinder head (6) side to connect the compressed exhaust gas vent hole (7-1) to the compressed exhaust gas vent hole (7-1) provided in the retention chamber (3-1). A vent valve (22) is provided in the middle of the pore path or near the end of the vent path of the combustion chamber of the engine cylinder (2) or in the compressed exhaust gas injection hole (7-2). Whether to provide a mechanical cam type vent valve (22-2) that opens and closes the valve by attaching the cam (14) to the shaft using the camshaft (13) on the upper side of the cylinder head (6) in (2) Or do not use camshaft (14) By opening and closing the provided electromagnetic vent valve (22-1) which vents the valve (22) operating in the gas,

Shutting off the flow of compressed exhaust gas by closing the compressed exhaust gas passage (7) through which the compressed exhaust gas in the retention chamber (3-1) of the exhaust gas compression cylinder (3) flows; Combustion of the cylinder head (6) of the engine cylinder (2) is caused by preventing the backflow of the combustion gas in the engine cylinder (2) and venting the compressed exhaust gas of the exhaust gas compression cylinder (3) by opening the vent valve (22). Exhaust gas according to any one of claims 1 to 3, characterized in that compressed exhaust gas is injected into the cylinder (5) from the compressed exhaust gas injection hole (7-2) of the chamber (2-1). This is a gas suction compression injection engine.

An engine cylinder (2), which is a power source for an engine having multiple cylinders, and an exhaust gas compression cylinder (3) for sucking and compressing exhaust gas are provided. From the adjacent exhaust gas compression cylinder (3) to the inside of the cylinder (5) from the vicinity of the end of the intake stroke near the bottom dead center to the start of the compression stroke. The exhaust gas of the maximum volume of the cylinder is compressed, and the compressed exhaust gas in the stay chamber (3-1) of the cylinder head (6) is passed through the compressed exhaust gas vent hole (7) provided on the upper side of the cylinder head (6). By opening the valve of the air passage, the fuel is injected into the cylinder (5) of the engine cylinder (2), and then the air / fuel / exhaust gas mixture is received by the ignition plug (25) by compression of the piston (4). , Explosion, combustion, or four-cycle engines of the spark plug system for an exhaust, or performs intake air from the intake port in the intake stroke of the piston (4) of the engine cylinders (15), a piston (4) is near the bottom dead center From the vicinity of the end of the intake stroke to the vicinity of the start of the compression stroke, the exhaust gas having the maximum volume in the cylinder (5) is compressed from the adjacent exhaust gas compression cylinder (3) to the retention chamber (3- The compressed exhaust gas of 1) is injected into the cylinder (5) of the engine cylinder (2) by opening a valve of the vent passage from the compressed exhaust gas passage (7) provided on the cylinder head (6) side. After that, the mixture of air and exhaust gas is compressed by the piston (4), and then the fuel is directly injected by the fuel injection device to ignite, explode, burn and exhaust. An exhaust gas intake compression injection engine, characterized in that moving the Cycle engine.

In the present invention, exhaust gas combusted in the cylinder (5) of the engine cylinder (2) is introduced from an exhaust gas intake manifold (20) newly provided on the exhaust gas compression cylinder (3) side connected to the exhaust manifold (18). The exhaust gas intake port (19) enters the cylinder (5) in the intake stroke of the piston (4) of the exhaust gas compression cylinder (3), and then compresses the compressed exhaust gas to the exhaust gas vent on the cylinder head side. Gasoline engine by injecting compressed exhaust gas from the road (7) into the adjacent engine cylinder (2) and putting it into the cylinder (5), and compressing the air / fuel / exhaust gas mixture with the piston and igniting it. If the air-fuel mixture is highly compressed, the effect of preventing spontaneous ignition near the top dead center and knocking by it, and then compressing only the air and then gasoline Direct injection to ignition, explosion, to cause the burning abnormally high temperature of the combustion with air, the abnormal combustion of the high pressure, the effect of preventing them.

Intake stroke in the cylinder (5) of the exhaust gas compression cylinder (3) into the air-fuel mixture of the maximum volume at the bottom dead center of the piston (4) in the intake stroke in the cylinder (5) of the engine cylinder (2) The exhaust gas having the maximum volume at the bottom dead center of the piston (4) is compressed by the piston (4) in the compression stroke, and the compressed exhaust gas is sucked into the vicinity of the bottom dead center of the piston (4) of the engine cylinder (2). By injecting exhaust gas from the end of the stroke to the beginning of the compression stroke, the inside of the cylinder (5) is nearly doubled at the bottom dead center from the end of the intake stroke to the beginning of the compression stroke. By compressing with the piston (4) after that, the compression ratio of the normal gasoline engine can be obtained from the same compression ratio of 15 to 20 as that of the diesel engine.

When the exhaust gas is too rich, the air pipe (23) is attached to the exhaust gas intake manifold (20) of the exhaust gas compression cylinder (3). ) And the air in the cylinder (5) of the engine cylinder (2) by injecting the mixture of fuel and air from the intake port (15) in the cylinder (5) There is an effect that ignition and explosion and combustion are facilitated even at high compression with a proper mixture of fuel and exhaust gas.

By providing the exhaust gas compression cylinder (3), the exhaust gas is introduced into the engine cylinder (2), and the pressure in the cylinder (5) is doubled, so that the combustion chamber (2- While maintaining the compression ratio of 15 to 20 in 1), it is easy to expand the space of the compressed air-fuel mixture, and there is an effect that it becomes easy to ignite by increasing the volume of the compressed air-fuel mixture.

Air is sucked into the cylinder (5) of the intake stroke of the engine cylinder (2) from the intake port (15) and fuel is injected using the fuel injection device (26), and the vicinity of the end of the intake stroke of the piston (4) Near the beginning of the compression stroke, compressed exhaust gas passing through the compressed exhaust gas passage (7) is injected from the exhaust gas compression cylinder (3), then compressed by the piston (4), and ignited by the spark plug (25). By burning in the combustion stroke, fuel efficiency is improved by improving the combustion efficiency of the fuel from the theory that if a small amount of fuel is ignited in a sealed container of high temperature and high pressure, the explosive power increases. Since the ratio of exhaust gas in the cylinder of the engine cylinder (2) is large and the ratio of air amount is small, there is an effect that the exhaust amount of nitrogen oxide is reduced by reburning the exhaust gas.

1 is a cross-sectional view of an exhaust gas compression cylinder showing the configuration of the present invention as seen from the front. FIG. 4 is a cross-sectional view seen from above showing the configuration of the intake manifold, exhaust manifold, exhaust gas intake manifold, and compressed exhaust gas vent passage of the cylinder head of the present invention. The sectional view which looked at the engine cylinder which shows the composition of this invention from the front. The sectional view seen from the side of the engine which has three cylinders which shows the composition of this invention. Sectional drawing which shows attachment of the electromagnetic vent valve of this invention. Sectional drawing which shows attachment of the mechanical cam type vent hole valve of this invention.

First, an engine (1) having three cylinders in one engine block will be described with reference to the drawings. The engine is a front gear box (27) from FIG. ) Is the rear side of the engine (1), and the relationship between the front, rear, left and right of the parts in the drawing will be described with reference to them. The engine cylinder (2) of the present invention does not indicate the cylinder itself, but the state of the engine that produces power in one cylinder. Therefore, the front engine cylinder and the rear engine cylinder are separately described. The exhaust gas compression cylinder (3) does not indicate the cylinder itself, but a state of a compressor that sucks and compresses exhaust gas in one cylinder. In addition, in the stay chamber (3-1) of the exhaust gas compression cylinder (3), the compressed exhaust gas is opened in the compressed exhaust gas injection hole (7-2) by opening the vent hole valve (22) of the engine cylinder (2). It was named the staying chamber (3-1) because it stays where it was sprayed. The engine cylinder (2) and the exhaust gas compression cylinder (3) are both in the same engine block and use the same crankshaft. The compressed exhaust gas vent passage (7) on the cylinder head (6) side, which will be described later, is a compressed exhaust above the stay chamber (3-1) in the cylinder head (6) of the exhaust gas compression cylinder (3). This refers to a vent path from the gas vent hole (7-1) to the compressed exhaust gas injection hole (7-2) above the combustion chamber (2-1) of the cylinder head (6) of the engine cylinder (2).

The description of the four-cycle diesel engine system from line 22 of claim 1 is not depicted in the drawings, but is described in the detailed description in paragraph 0043 in the mode for carrying out the invention. The drawing illustrates a four-cycle engine using spark plugs.

In the following, with reference to the drawings, in an engine having multiple cylinders, as shown in FIG. 4, an engine cylinder (2) that generates power by explosion combustion and an exhaust gas compression cylinder (3) that injects compressed exhaust gas into the engine cylinder. The multi-cylinder engine is a set of three cylinders, and the front and rear cylinders are provided as engine cylinders (2) and the middle cylinder is provided as an exhaust gas compression cylinder (3).

The front and rear engine cylinders (2) of the engine (1) having the three cylinders shown in FIG. 4 described in the present invention are four-cycle engines as shown in FIG. 3 having an ordinary compression ratio of 8 to 11. Existence fuel is injected from the intake port (15) side by the fuel injection device (26). The middle exhaust gas compression cylinder (3) has two cycles, and the engine cylinder (2) performs four cycles with two rotations of the crankshaft, whereas the exhaust gas compression cylinder (3) has one rotation of the crankshaft. The engine cylinder (2) and the exhaust gas compression cylinder (3) use the same single crankshaft. FIG. 2 shows the cylinder head (6) above the cylinder (5) of the engine (1) having the three cylinders of FIG. 4 from above, and the lower side of FIG. 2 is the front side of the cylinder head (6). 2 is the front side of the engine (1) having three cylinders, and the upper side in FIG. 2 is the rear side of the cylinder head (6) and the rear side of the engine (1) having three cylinders.

As shown in FIG. 2, the inlets of the intake ports (12) of the cylinder heads (6) of the front and rear engine cylinders (2) are on the right side when viewed from the front side of the engine (1), and the intake valves ( A fuel injection device (26) is mounted on the upper side of the intake port (15) near 10) so that the nozzle exits into the air passage in the intake port (15), and the intake port (15) is an intake manifold. From the one manifold on the upper side of (16), at the branch point (21), it is divided into two branches as shown in FIG. 2, and the manifolds are located on the left and right sides of the intake ports (15) of the engine cylinders (2) on the front and rear sides. It is connected to the entrance.

The exhaust port (17) is located on the left side of the cylinder head (6) as shown in FIG. 2 and FIG. 3, and at its outlet, from one manifold on the lower side of the exhaust manifold (18) to the trifurcation at the branch point (21). Although a separate manifold is attached, the manifold in the middle puts the exhaust gas into the exhaust gas intake port (19) of the cylinder head (6) of the exhaust gas compression cylinder (3), so it is not the exhaust manifold (18) but the above-mentioned amount. An exhaust gas intake manifold (20) is formed from the branch point (21). In FIG. 1, the exhaust gas intake manifold (20) is connected to the branch point (21) of the exhaust manifold (18) and the exhaust gas intake port (19) of the cylinder head (6). It may be connected to a far lower manifold below.

Therefore, the cylinder head (6) of the exhaust gas compression cylinder (3) does not have an exhaust port (17) for exhausting like the engine cylinder (2) or an exhaust manifold (18) connected to the exhaust port (17). ) From the compressed exhaust gas vent hole (7-1) in the upper center of the retention chamber (3-1) through the compressed exhaust gas vent path (7) and the cylinder head (6) of the engine cylinder. It is injected into the cylinder (5) from the compressed exhaust gas injection hole (7-2) above the combustion chamber (2-1).

The exhaust gas intake manifold (20) does not take only exhaust gas into the cylinder (5) of the exhaust gas compression cylinder (3), but exhausts it so that air enters from the exhaust gas intake manifold (20) as shown in FIG. From the outside of the gas intake manifold (20), the air pipe (23) is inserted into the air passage in the exhaust gas intake manifold (20), and the air pipe (23) is bent in the direction of the exhaust gas intake port (19). The outlet of the air at the tip side of the air pipe (23) is located before the exhaust gas intake port (19) of the cylinder head (6) of the exhaust gas compression cylinder (3) or the exhaust gas intake port ( 19) You may put it in. An air flow restriction valve (24) is provided in the middle of the air pipe (23) on the upper side of the air pipe (23) outside the exhaust gas intake manifold (20). It can be adjusted.

When the exhaust gas intake valve (12) of the exhaust gas intake port (19) of the cylinder head (6) of the exhaust gas compression cylinder (3) is opened, the piston (4) in the cylinder (5) is in the intake stroke. The exhaust gas is drawn in toward the bottom dead center, and at this time, if the air flow restrictor (24) of the air pipe (23) of the exhaust gas intake manifold (20) is open, the inside of the cylinder and the exhaust gas intake port ( Air is jetted from the air pipe by the negative pressure of 19) and sucked into the cylinder (5). By adjusting the air, the exhaust gas having an appropriate mixing ratio of exhaust gas and air is compressed by the piston (4) in the cylinder (5) with the exhaust gas intake valve (12) closed, and the compressed exhaust gas is compressed. Near the end of the intake stroke and near the beginning of the compression stroke near the bottom dead center of the piston (4) in the cylinder (5) of the front and rear engine cylinders (2) through the exhaust gas vent passage (7) The mixture of air, fuel, and exhaust gas in the cylinder of the engine cylinder (2) as will be described later by being alternately injected from the compressed exhaust gas injection holes (7-2) above the combustion chamber (2-1). Optimize the ignition, explosion, and combustion stroke combustion during compression of the piston (4).

Exhaust gas is injected into the cylinder (5) of the engine cylinder (2) when the compressed exhaust gas of the exhaust gas compression cylinder (3) is used when a high-compression gasoline engine with a long stroke of the piston is only a mixture of gasoline and air. Spontaneous combustion near the top dead center at the time of compression and knocking by it, and high compression of only air with an injection method like a diesel engine, and then injecting and igniting gasoline will cause explosion, combustion of air by combustion Spontaneous ignition near the top dead center of the piston (4) during high compression by putting a lot of exhaust gas into the cylinder (5) of the engine cylinder (2), resulting in abnormal combustion at abnormally high temperature and pressure Knocking and abnormal combustion during explosion combustion can be prevented, and nitrogen oxides can be reduced by reburning exhaust gas.

The middle exhaust gas compression cylinder (3) provided for putting compressed exhaust gas into the cylinder (5) of the engine cylinder (2) reaches from the top dead center to the bottom dead center of the piston (4) as shown in FIG. Sometimes the exhaust gas intake valve (12) of the stay chamber (3-1) is opened, and the exhaust gas is drawn from the exhaust gas intake manifold (20) through the exhaust gas intake port (19) into the cylinder (5). When the piston (4) reaches the bottom dead center, the valve of the exhaust gas intake valve (12) is closed and then compressed by the piston (4) to reach the top dead center.

The intake port (15) of the engine cylinder (2) is on the right side when viewed from the front side as shown in FIG. 3, while the exhaust gas intake port (19) is on the left side of the engine, as shown in FIG. 1 and 2 from the middle between the two branches at the branch point (21) on the lower side of the bifurcated exhaust manifold (18) attached to the outlet of the exhaust port (17) of the engine cylinder (2). In this way, the exhaust gas intake manifold (20) is connected.

The residence chamber (3-1) in the cylinder head (6) of the exhaust gas compression cylinder (3) and the combustion chamber (2-1) of the cylinder head (6) of the front and rear engine cylinders (2) A compressed exhaust gas vent passage (7) through which the compressed exhaust gas connecting them from FIGS. 2 and 4 passes is provided on the cylinder head (6) and the upper side thereof, and a vent valve (22) is provided in the middle of the vent passage. A vent valve (22) is provided at a position in the direction of the exhaust gas compression cylinder (3) next to the spark plug (25) at the center above the combustion chambers of the front and rear engine cylinders (2), The upper surface of the cylinder head (6) at the lower side has a valve seat (9) to which a valve is attached, and the compressed exhaust that penetrates from the upper surface of the lower combustion chamber (2-1) to the upper side of the cylinder head (6). Valve with gas injection hole (7-2) Is connected to vent passage (9).

In the valve seat (9), as shown in FIGS. 4 and 5, a compressed exhaust gas passage (7) connected to the compressed exhaust gas injection hole (7-2) of the engine cylinder (2) is partway up. From there, a vent passage penetrates in the direction of the branch seat (8) on the side of the exhaust gas compression cylinder (3), which will be described later, and serves as an entrance for compressed exhaust gas. On the side of the compressed exhaust gas vent passage (7), the valve on the upper side of the vent passage so that the valve pin (22-3) of the vent valve (22) intersects at right angles to the vent passage. A hole into which the valve pin (22-3) of the electromagnetic vent valve (22-1) is inserted is provided slightly below the vent passage from the upper surface of the seat (9), and the valve pin (22-3) is filled in the hole. Thus, the shut-off of the compressed exhaust gas from the exhaust gas compression cylinder (3) and the backflow of the combustion gas from the engine cylinder (2) are prevented.

A compressed exhaust gas vent (7-1) is provided at the center of the upper surface of the retention chamber (3-1) of the exhaust gas compression cylinder (3) as shown in FIG. 1, and the compressed exhaust gas vent (7-1) is provided. Pierces the upper surface of the cylinder head (6), and there is a branch seat (8) on the upper side thereof, in which a compressed exhaust gas vent passage connected to the compressed exhaust gas vent (7-1) as shown in FIG. (7) goes up partway, and from there, toward the valve seat (9) on the front and rear engine cylinders (2) side, there are compressed exhaust gas vents (7) on both sides as shown by the letter T. They pass through and are used as outlets for the compressed exhaust gas at the branch (8). The outlet of the compressed exhaust gas on both sides of the branch seat (8) and the inlet of the compressed exhaust gas on the front and rear valve seats (9) are connected by a pressure-resistant pipe as shown in FIGS. The compressed exhaust gas passes through the compressed exhaust gas vent hole (7) therein as the gas vent pipe (7-3).

The vent valve mounted on the valve seat (9) above the cylinder head (6) of the front and rear engine cylinders (2) is the cylinder head (6) used in the engine cylinder as shown in FIG. A method of using the mechanical cam type vent valve (22-2) of FIG. 6 in which the cam (14) is mounted using the cam shaft (13) on the top and the valve is opened and closed, and the electromagnetic type vent valve (22) of FIG. -1) is used, and FIG. 4 shows an electromagnetic vent valve (22-1).

The engine cylinder (2) of FIG. 3 is a twin camshaft, and the exhaust valve (11) and the exhaust gas intake valve (12) of the exhaust gas compression cylinder (3) are the left camshaft (13) as shown in FIGS. ) And the engine cylinder (2) has four cycles, so that the valve of the exhaust valve (11) has an exhaust stroke of one-fourth of the rotation of the camshaft (13) by two rotations of the crankshaft. Since the exhaust gas compression cylinder (3) has two cycles, the camshaft (13) is cammed as shown in FIG. 1 in order to open the valve in two intake strokes in one rotation. There are two cam peaks (14-2) in (14) at symmetrical positions.

The camshaft (13) is used to provide a mechanical cam type vent valve (19) of the valve seat (9) on the cylinder head (6) of the engine cylinder (2) of the compressed exhaust gas passage (7). In this case, a vent valve is provided so that the valve pin (22-3) faces the camshaft (13), and in FIG. 6, it is flat on the outer peripheral surface of the circular cam so as to be perpendicular to the center line of the end surface. One surface (14-1) is provided and the upper surface of the tappet (22-2a) of the mechanical cam type vent hole valve (22-2) is placed on the flat surface so that the valve pin (22-3) rises and the valve Exhaust gas is injected into the cylinder (5) of the engine cylinder from the compressed exhaust gas injection hole (7-2) by opening the compressed exhaust gas passage (7) of the seat (9). Since the position of the piston (4) of the engine cylinder at the time of injection is from the vicinity of the bottom dead center of the intake stroke to the start of the compression stroke, if the flat surface (14-1) of the cam (14) is increased, the machine The opening time of the cam-type vent valve (22-2) becomes longer, and in order to shorten the opening time, the entire cam (14) is made larger and the flat surface (14-1) is made smaller. . The lower end of the valve pin (22-3) is positioned below the compressed exhaust gas passage (7) when the tappet (22-2a) rides on the arc-shaped outer peripheral surface of the cam (14). 6 (1), the compressed exhaust gas passage (7) of the valve seat (9) is closed. The difference in distance from the center of the arc (14) of the arc (14) of the cam (14) of the mechanical cam type vent valve (22-2) and the flat surface (14-1) from the center of the cam (14) is the compressed exhaust gas vent path. It is slightly larger than the diameter of the hole in (7).

The electromagnetic vent valve (22-1) of the valve seat is easier to set the opening time of the vent valve than the mechanical cam type vent valve as shown in FIG. When electricity is not flowing through the electromagnetic coil (22-1-b) in the electromagnetic vent valve (22-1), the plunger (22-1-a) below the plunger (22-1-a) such as a piston ( 22-1-a-2) is pushed down by the force of the spring (22-4), the valve pin (22-3) is lowered as shown in FIG. 5 (1), and the compressed exhaust gas vent hole of the valve seat (9) The road (9) is closed. When electricity flows through the electromagnetic coil (22-1-b), the magnet (22-1-) attached on the upper plunger (22-1-a-1) of the electromagnetic vent valve (22-1). c) is pulled toward the electromagnetic coil (22-1-b), so that the valve pin (22-3) rises as shown in FIG. 5 (2), and the compressed exhaust gas vent hole (7) of the valve seat (9). open. By opening the vent passage, exhaust gas is injected into the cylinder (5) from the compressed exhaust gas injection hole (7-2) above the combustion chamber (2-1) of the engine cylinder (2). The distance that the magnet (22-1-c) of the upper plunger (22-1-a-1) is attracted to the electromagnetic coil (22-1-b) is the diameter of the hole of the compressed exhaust gas passage (7). Somewhat bigger. When the compressed exhaust gas vent hole passage (7) of the valve seat (9) is closed by two types of mechanical cam type and electromagnetic vent hole valve (22) valve pins (22-3), the exhaust gas compression cylinder (3) the combustion of the front and rear engine cylinders (2) by blocking the flow of compressed exhaust gas from the compressed exhaust gas passage (7) to the front and rear engine cylinders (2); Prevents backflow of combustion gas during exhaust.

Here, from the eleventh line of claim 1, “or the vent valve (22) in the vicinity of the outlet of the vent passage (7) of the combustion chamber of the engine cylinder (2) or the compressed exhaust gas injection hole (7-2)”. And from the fourth row of claim 4, "or the vent valve (22) in the vicinity of the outlet at the end of the vent path of the combustion chamber of the engine cylinder (2) or in the compressed exhaust gas injection hole (7-2)". "Providing a vent valve (22) in the vicinity of the outlet at the end of the vent passage or in the compressed exhaust gas injection hole (7-2)" in "is a compressed exhaust gas injection hole (7- 2) is a method of closing the exhaust gas vent passage, for example, a valve having the same structure as the intake valve (10) and exhaust valve (11) of the combustion chamber of the engine cylinder (2) and having a smaller shape The compressed exhaust gas injection hole (7-2) at the outlet at the end of (7) is closed, and the camshaft This is a mechanical cam type valve that uses a tappet with a cam crest, and the valve of this structure moves the valve and the upper tappet by the cam cam crest so that the outlet of the exhaust gas vent passage Since the compressed exhaust gas injection hole is opened and the compressed exhaust gas injection hole is closed by the force of the spring, the compressed exhaust gas of the exhaust gas compression cylinder tries to push the back of the valve by the pressure of the compression ratio When the camshaft rotates at high speed, there is no certainty in closing the valve. However, the backflow of the combustion gas in the engine cylinder can be surely prevented and can be easily provided by existing technology.

By opening the vent valve (22) of the valve seat (9), the compressed exhaust gas at the top dead center of the piston (4) of the exhaust gas compression cylinder (3) is transferred to the piston (4) of the engine cylinder (2). The piston (4) after the intake of the air in the intake stroke and the fuel injection device (26) in the intake port injects from the vicinity of the end of the intake stroke near the bottom dead center to the vicinity of the start of the compression stroke. As a result, the mixture of air, fuel, and exhaust gas produced by injection of compressed exhaust gas is compressed by the piston (4) and ignited by the spark plug to explode and burn. , or 4-stroke engine system by the spark plug to discharge, or the present invention is an engine using gasoline fuel in diesel engines manner, be used as an engine that uses light oil Although not drawn in the drawings, the exhaust valve of the valve seat opens by attaching a fuel injection device that directly injects the upper side of the combustion chamber of the engine cylinder, so that the compressed exhaust gas at the top dead center of the piston of the exhaust gas compression cylinder The piston after the intake of the air in the intake stroke of the piston of the engine cylinder is injected from the vicinity of the end of the intake stroke near the bottom dead center to the vicinity of the start of the compression stroke, thereby entering the cylinder of the engine cylinder. A mixture of air and compressed exhaust gas is compressed by a piston and ignited by fuel directly injected from the fuel injection device located above the combustion chamber, and ignited by direct injection of fuel that explodes, burns and exhausts. This is a four-cycle diesel engine system. Vibration because it is a short stroke of the emission engine par becomes less quiet engine.

The piston (4) of the engine cylinder (2) on the rear side of the four-cycle engine using the spark plug of FIG. 4 puts fuel, air and exhaust gas, and the compression stroke ends. From the ignition explosion to the top dead center of the combustion stroke At the bottom dead center, the front engine cylinder (2) opens the valve of the intake valve (10) as shown in FIG. 3, the intake stroke starts, and the piston (4) in the cylinder (5) starts from the top dead center. The fuel is injected from the fuel injection device (26) of the intake port (15) on the right side of the intake valve (10) toward the bottom dead center, and at that time, air also enters the cylinder (5) through the intake port (15). come.

When the piston (4) in the cylinder of the front engine cylinder approaches bottom dead center and when the valve of the intake valve (10) is about to close, the cylinder (5) of the middle exhaust gas compression cylinder (2) The piston (4) inside the exhaust gas intake valve (12) is closed and the compression stroke reaches the top dead center from the bottom dead center as shown in FIG. From the compressed exhaust gas vent hole (7-1) through the branch seat (8) to the compressed exhaust gas vent hole pipe (7-3) through the compressed exhaust gas vent hole path (7) to the valve seat (9). When the vent valve (22) is opened, the compressed exhaust gas is injected into the cylinder (5) from the compressed exhaust gas injection hole (7-2) of the front engine cylinder (2), and the exhaust gas and air are injected. The piston (4) ends the intake stroke and the compression stroke When at the bottom dead center, the piston (4) of the rear engine cylinder (2) is at the bottom dead center at the beginning of the exhaust stroke, and then the piston (4) of the front engine cylinder (2) is From the bottom dead center to the top dead center of the compression stroke, and ignited, exploded and burned by the spark plug (25) to reach the bottom dead center from the top dead center of the combustion stroke, and exhausted in the exhaust stroke from the bottom dead center to the top dead center doing.

As shown in FIG. 4, the front and rear cylinders are engine cylinders, and the middle cylinder is an exhaust gas compression cylinder as shown in FIG. The exhaust gas is sent by alternately injecting the compressed exhaust gas from the vicinity of the end of the intake stroke of the engine cylinder (2) to the vicinity of the start of the compression stroke. In the engine cylinder (2), the piston is reciprocated twice to achieve four cycles of intake, compression, combustion, and exhaust. However, in the exhaust gas compression cylinder (3), only reciprocation is performed in two strokes. Therefore, it becomes possible to send the exhaust gas by alternately injecting the compressed exhaust gas in the vicinity of the bottom end of the piston near the end of the intake stroke and the start of the compression stroke of the front and rear engine cylinders (2). .

The compressed exhaust gas is alternately injected into the cylinders (5) of the front and rear engine cylinders (2) to send the compressed exhaust gas to the air at the bottom dead center of the piston (4) of the engine cylinder (2). The maximum exhaust volume of the cylinder volume at the bottom dead center of the piston (4) of the exhaust gas compression cylinder (3) is increased from the bottom dead center by the piston to the maximum volume of the cylinder containing the mixture of gasoline and gasoline. By compressing and adding at the dead center, the cylinder volume pressure at the bottom dead center of the engine cylinder is nearly doubled, and then compressed by the piston, so that a compression ratio 15 to 20 similar to that of a diesel engine can be secured. By ensuring the same compression ratio as a diesel engine, the fuel consumption improves because it explodes and burns with a small amount of fuel. Then, the exhaust gas is put into an exhaust gas compression cylinder, compressed, injected again into the cylinder of the engine cylinder, and then compressed by a piston (4) to be ignited, exploded, and burned, thereby causing a conventional engine exhaust gas circulation system. Can reduce nitrogen oxides.

The purpose of injecting the compressed exhaust gas and sending it into the cylinder (4) of the engine cylinder (2) is that the piston (2) of the exhaust gas compression cylinder (3) is dead from the bottom dead center without being compressed. When the point is reached, open the vent valve of the valve seat (9) and push the exhaust gas in the cylinder with the piston (4) of the exhaust gas compression cylinder (3) as it is, the cylinder (4) of the engine cylinder (2) When the piston (4) in the cylinder (5) of the engine cylinder (2) is moved from the top dead center to the bottom dead center, the fuel is injected by the fuel injection device even if the valve of the intake valve (10) is open. Is injected, but only a small amount of air enters from the intake port (15), and only exhaust gas from the exhaust gas compression cylinder (3) enters.

Therefore, in the engine cylinder (2), air and fuel are first put into the cylinder (5) of the intake stroke, and the piston (4) is near the bottom dead center from the end of the intake stroke, near the start of the compression stroke, or the intake air When the valve of the valve (10) is about to close, the compressed exhaust gas compressed from the exhaust gas compression cylinder (3) when the valve is closed is compressed into the vent valve (22) of the valve seat (9). The cylinder volume pressure at the bottom dead center of the intake stroke of the piston (4) of the engine cylinder (2) is injected by instantaneously injecting the exhaust gas into the cylinder (5) of the engine cylinder (2). The exhaust gas intake compression injection engine according to any one of claims 1 to 3, wherein the engine is nearly doubled and described above.

The four-cycle engine (1) using the spark plug (25) having three cylinders of the drawing of the present invention will be described as an example. The piston in the cylinder of the middle exhaust gas compression cylinder (3) is shown in FIG. Thus, when moving from top dead center to bottom dead center, the valve of the exhaust gas intake valve (12) is open, and the exhaust gas of the bifurcated exhaust manifold (18) of the front and rear engine cylinders (2) is The piston rises from the exhaust gas intake manifold (20) provided in the present invention connected in the middle of the lower branch point (21) of the manifold through the exhaust gas intake port (19) of the exhaust gas compression cylinder (3). It goes into the cylinder (5) from the dead point until it reaches the bottom dead center. Thereafter, the valve of the exhaust gas intake valve (12) closes and the piston compresses the exhaust gas toward the top dead center.

When the piston of the exhaust gas compression cylinder (3) starts the compression stroke, the piston of the front engine cylinder (2) moves from the top dead center to the bottom dead center as shown in FIG. 3, and the valve of the intake valve (10) opens. In the intake stroke, air enters the cylinder from the intake manifold (16) through the intake port (15), and at the same time, the fuel is injected from the fuel injection device (26) of the intake port (15) on the right side of the intake valve (10). Is injected and when the piston reaches bottom dead center, the valve of its intake valve (10) is closed.

As soon as the valve of the intake valve (10) is closed, the piston in the cylinder of the exhaust gas compression cylinder (3) in the middle reaches the top dead center as shown in FIG. The vent valve (22) of the valve seat (9) on the upper side of the combustion chamber (2-1) of the cylinder (2) is opened, and the compressed exhaust gas is supplied to the compressed exhaust gas injection hole (7-2) of the engine cylinder (2). ) From the end of the intake stroke near the bottom dead center to the beginning of the compression stroke. In that state, it becomes a mixture of air, fuel, and exhaust gas, and the pressure in the cylinder is nearly doubled. Thereafter, the piston compresses the air-fuel mixture toward the top dead center and becomes the same compression ratio 15 to 20 as that of a diesel engine.

The air-fuel mixture compressed at the top dead center is ignited and exploded by a spark plug, the piston moves from the top dead center to the bottom dead center in the combustion stroke, the exhaust valve (11) opens in the exhaust stroke, and the piston is bottom dead center. The exhaust gas passes from the exhaust port (17) through the exhaust manifold (18) toward the top dead center.

When the piston in the cylinder of the front engine cylinder (2) is in the compression stroke, the piston of the exhaust gas compression cylinder (3) enters the exhaust gas intake stroke as shown in FIG. 1, and the valve of the exhaust gas intake valve (12) is The exhaust gas enters the cylinder from the top dead center of the piston to the bottom dead center through the exhaust gas intake manifold (20) through the exhaust gas intake port (19). Thereafter, the valve of the exhaust gas intake valve (12) closes and the piston tries to compress the exhaust gas toward the top dead center.

At this time, the piston in the cylinder of the rear engine cylinder (2) moves from the top dead center to the bottom dead center as shown in FIG. 3, the valve of the intake valve (10) opens and enters the intake stroke, and the air enters the intake manifold. Fuel is injected from the fuel injection device (26) of the intake port (15) behind the intake valve (10) while entering the cylinder from (16) through the intake port (15), and the piston is at bottom dead center. When the valve of the intake valve (10) is closed at the same time, the piston in the cylinder of the exhaust gas compression cylinder (3) in the middle reaches top dead center and compresses the exhaust gas. The vent valve (22) of the valve seat (9) on the upper side of the combustion chamber (2-1) of the cylinder (2) is opened, and the piston in the cylinder of the engine cylinder (2) on the rear side lowers the compressed exhaust gas. Dead point Injecting the exhaust gas to near the beginning of the compression stroke from near the end of the intake stroke in the near.

The piston of the rear engine cylinder (2) heads to the top dead center, compresses the air / fuel / exhaust gas mixture, and the compressed mixture is ignited and ignited by the spark plug. From the point to the bottom dead center, the valve of the exhaust valve (11) opens in the exhaust stroke, the piston moves from the bottom dead center to the top dead center, and the combustion gas passes through the exhaust manifold (18) from the exhaust port (17) as exhaust gas. .

The exhaust gas of the bifurcated exhaust manifold (18) is connected to the lower branch point of the manifold from the exhaust gas intake manifold (20) through the exhaust gas intake port (19) of the exhaust gas compression cylinder (3). Exhaust gas enters the cylinder during the exhaust gas intake stroke until the piston in the cylinder reaches the bottom dead center from the top dead center. Hereinafter, the above is repeated.

The injection timing of the vent valve (22) of the valve seat (9) into the cylinder of the engine cylinder (2) of the compressed exhaust gas of the exhaust gas compression cylinder (3) is lower than the piston in the cylinder of the engine cylinder (2). Although it is performed from the end of the intake stroke near the dead center to the start of the compression stroke, the pressure of the compressed exhaust gas is higher than the pressure in the cylinder of the engine cylinder (2), so theoretically speaking, the intake stroke of the piston The compressed exhaust gas seems to be able to be injected from the end of the process to the middle of the compression stroke.

The middle of the compression stroke seems to be able to inject the compressed exhaust gas from the bottom dead center of the compression stroke to the middle between the top dead center, but the piston of the engine cylinder (2) starts from the bottom dead center of the compression stroke. When going to the middle between the top dead centers, the piston of the exhaust gas compression cylinder (3) enters the intake stroke and goes to the bottom dead center, so that the exhaust gas cannot be injected. The best method is (2) that is performed from the end of the intake stroke where the piston in the cylinder is near bottom dead center to the start of the compression stroke.

In the present invention, exhaust gas is taken in from the exhaust manifold. When the exhaust gas is rich, the air flow throttle valve (24) on the exhaust gas intake manifold (20) of the exhaust gas compression cylinder (3) in FIG. 1 is adjusted. Then put air into the cylinder. The throttle valve is better electrical than mechanical. This is because the electric type can be controlled by a computer. The exhaust gas intake compression injection engine according to claim 1, claim 2, claim 3, and claim 4 as described above.

The fuel economy competition of gasoline engine cars has been fierce since around 2010, and the present invention aims to improve the fuel efficiency of the engine and reduce nitrogen oxides, while being a short stroke engine similar to a conventional gasoline engine, but with a long stroke. With a compression ratio similar to that of a diesel engine, fuel consumption can be improved and nitrogen oxides can be reduced. In the engine (1) having three cylinders of the present invention, a generator engine, a compressor engine, a motorcycle It is suitable for engines and can be mounted on mini four-wheeled vehicles, and in ordinary four-wheeled vehicles, it can be mounted on an engine with six cylinders in one set of three cylinders, and there is great industrial applicability.

Engine with 1 3 cylinders
2 engine cylinder
2-1 Combustion chamber 3 Exhaust gas compression cylinder 3-1 Retention chamber
4 pistons
5 cylinders
6 cylinder head 7 compressed exhaust gas vent passage 7-1 compressed exhaust gas vent hole
7-2 Compressed exhaust gas injection hole 7-3 Compressed exhaust gas vent hole pipe 8 branch seat
9 valve seat
10 intake valve
11 exhaust valve 12 exhaust gas intake valve 13 cam shaft 14 cam 14-1 flat surface 14-2 cam crest 15 intake port 16 intake manifold 17 exhaust port 18 exhaust manifold 19 exhaust gas intake port 20 exhaust gas intake manifold 21 branch point 22 Vent hole valve 22-1 Electromagnetic vent valve 22-1-a Plunger 22-1-a-1 Upper plunger 22-1-a-2 Lower plunger 22-1-b Electromagnetic coil 22- 1-c magnet 22-2 mechanical cam type vent valve 22-2-a tappet 22-3 valve pin 22-4 spring 23 air pipe 24 air flow throttle valve 25 spark plug 26 fuel injection device 27 front gear box 28 flywheel 29 engine block

Claims (4)

In an engine having multiple cylinders, an exhaust gas compression cylinder (3) for injecting compressed exhaust gas in one engine block and an engine cylinder (2) for generating combustion power by explosion combustion in the adjacent direction are provided, and the engine cylinder (2) The exhaust gas compression cylinder (3) provided for putting exhaust gas into the cylinder (5) of the cylinder is provided with an exhaust gas intake manifold (20) connected to an exhaust gas intake port (19) provided in the cylinder head (6). The exhaust gas is taken from the exhaust gas intake manifold (20), and when the piston (4) reaches from the top dead center to the bottom dead center, the exhaust gas is sucked into the cylinder (5), and the top dead center from the bottom dead center. The exhaust gas is compressed when the exhaust gas is compressed, and the stay chamber (3-1) of the cylinder head (6) above the cylinder (5) of the exhaust gas compression cylinder (3) and the cylinder of the engine cylinder (2) A compressed exhaust gas vent passage (7) through which compressed exhaust gas connecting the combustion chamber (2-1) of the cylinder head (6) above the cylinder head (6) passes is provided on the cylinder head (6) side, and the vent passage (7 ) Or a vent valve (22) near the outlet of the end of the vent passage (7) of the combustion chamber of the engine cylinder (2) or the compressed exhaust gas injection hole (7-2). 22), and when these valves are closed, the compressed exhaust gas of the exhaust gas compression cylinder (3) is blocked from flowing from the compressed exhaust gas vent hole (7) to the engine cylinder (2). Therefore, the backflow of the combustion gas in the engine cylinder (2) is prevented, and when the vent valve (22) opens, the compressed exhaust gas at the top dead center of the piston (4) of the exhaust gas compression cylinder (3) is Intake air in cylinder (2) of cylinder (2) The piston (4) after intake of the air in the intake port (15) and the fuel injected from the fuel injection device (26) injects from the vicinity of the bottom of the intake stroke to the vicinity of the start of the compression stroke. By doing so, a mixture of air, fuel, and exhaust gas generated by injection of compressed exhaust gas is compressed by the piston (4) and ignited by the spark plug and burned. Either a four-cycle engine system using an ignition plug for exhausting , or the compressed exhaust gas at the top dead center of the piston (4) of the exhaust gas compression cylinder (3) when the vent valve (22) is opened is engine cylinder (2 The compression stroke starts from the end of the intake stroke where the piston (4) after the intake of air from the intake port (15) of the intake stroke in the cylinder (5) is near the bottom dead center. The fuel of the fuel injection device (26) is compressed by the piston (4) by the mixture of the air that has entered the cylinder (5) of the engine cylinder (2) and the exhaust gas by the injection of the compressed exhaust gas. Exhaust gas suction compression injection engine characterized by a four-cycle diesel engine system that ignites, burns, and exhausts by direct injection. An engine having multiple cylinders in one engine block is made up of three cylinders as a set, and the middle cylinder is an exhaust gas compression cylinder (3) for compressing exhaust gas, and the cylinders on both sides thereof are engine cylinders (2). From the end of the intake stroke near the bottom dead center of the piston (4) in the cylinder (5) of the engine cylinder (2) on both sides from the exhaust gas compression cylinder (3) of the compressor to the beginning of the compression stroke 2. The exhaust gas intake compression injection engine according to claim 1, wherein the exhaust gas is sent by alternately injecting compressed exhaust gas. The exhaust gas intake port (19) of the cylinder head (6) of the exhaust gas compression cylinder (3) is provided on the same side as the exhaust port (17) of the engine cylinder (2), and the exhaust port (17) of the engine cylinder (2) is provided. The exhaust gas intake manifold (20) is provided between the exhaust manifold (18) connected to the exhaust gas compression cylinder (3) and the exhaust gas intake port (19) of the cylinder head (6) of the exhaust gas compression cylinder (3). Exhaust gas entering the cylinder of the gas compression cylinder (3) is sucked when the piston moves from top dead center to bottom dead center, and is connected to the exhaust manifold (18) of the engine cylinder (2). ) From the exhaust gas intake manifold (20) through the exhaust gas intake port (19) and into the cylinder (5). 3) When it is desired to mix air with the exhaust gas entering the cylinder (5), an air pipe (23) is inserted into the air passage from the outside of the exhaust gas intake manifold (20) to the air pipe (23). The air outlet side of the exhaust gas is placed in the exhaust gas intake manifold (20) so as to approach the exhaust gas intake port (19) of the cylinder head (6) or into the exhaust gas intake port (19). Then, an air flow restrictor (24) is provided in the middle from the exhaust gas intake manifold (20) to the air inlet of the air pipe (23) extending outward to adjust the amount of the attached air. The exhaust pipe of the exhaust gas intake manifold (20) in the intake stroke of the air pipe (air pipe ( Tip air exhaust intake compression injection engine according to any one of claims 1 2 to the air through the hole in the outlet, characterized in that to the jet of 3). The compressed exhaust gas injection hole (7-2) provided in the combustion chamber (2-1) of the cylinder head (6) of the engine cylinder (2) and the retention chamber (6) of the cylinder head (6) of the exhaust gas compression cylinder (3) 3-1) A compressed exhaust gas vent passage (7) is provided on the cylinder head (6) side to connect the compressed exhaust gas vent hole (7-1) to the cylinder head (6). Alternatively, a vent valve (22) is provided in the vicinity of the outlet at the end of the vent path of the combustion chamber of the engine cylinder (2) or in the compressed exhaust gas injection hole (7-2), and the valve is a cylinder of the engine cylinder (2). Use a camshaft (13) on the upper side of the head (6) to attach a cam (14) to the shaft and open or close a mechanical cam type vent valve (22-2) or camshaft ( 14) Electricity that operates with electricity Compressed exhaust gas flow through which the compressed exhaust gas flows in the retention chamber (3-1) of the exhaust gas compression cylinder (3) by opening and closing the vent valve (22). By closing the air passage (7) with the vent valve (22), the ventilation of the compressed exhaust gas is blocked, the backflow of the combustion gas in the engine cylinder (2) is prevented, and the exhaust gas compression is performed by opening the air vent valve (22). The compressed exhaust gas of the cylinder (3) is ventilated and compressed into the cylinder (5) from the compressed exhaust gas injection hole (7-2) of the combustion chamber (2-1) of the cylinder head (6) of the engine cylinder (2). The exhaust gas suction compression injection engine according to any one of claims 1 to 3, wherein the exhaust gas is injected.

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