COMPLETE COMBUSTION MECHANISM FOR DIESEL ENGINE Technical Field The present invention relates to a completion combustion mechanism for a diesel engine used in automotive vehicles, farm machinery, craft, etc. More particularly, it relates to a complete combustion mechanism for a diesel engine in which heat-proof disks of a special heat-resistant alloy steel are installed between a head gasket and a cylinder head to absorb an intense heat created at the time of explosion, and, after exhaust stroke, maximally heat the air reabsorbed in the next stroke, thus producing complete combustion. This mechanism assures more than 97% combustion efficiency, and enhances an output of power and combustion efficiency, simultaneously with decreasing soot and smoke and removing carbon attached to the inside of the cylinder. Therefore, the inventive complete combustion mechanism may increase a vehicle engine's life and an engine oil's significantly.

Background Art As already known, a diesel engine operates on a thermodynamic cycle by the action of a piston without use of an igniter. In the diesel engine the ratio of compression of

the air charge is sufficiently high to ignite the fuel subsequently injected into the combustion chamber. If the temperature of compressed air is low, a complete combustion is not produced, so an output of power is decreased, which makes the fuel be unnecessarily much wasted. The fuel imperfectly burned creates enormous exhaust gas.

Thus, a condition of the rise of the temperature of compressed air is essential to complete combustion in the diesel engine. Therefore, there has been proposed a diesel engine with either a preheater for heating the air before it is drawn into cylinders or a precombustion chamber for producing high temperature and high pressure by burning in advance a part of the fuel injected into the combustion chamber. The temperature of compressed air in the presently- available diesel engine does not exceed 400 to 5000C.

According to the conventional art, the insufficient rise of the air temperature increases the fuel consumption and exhaust gas, which reduces the engine's life.

Disclosure of Invention Accordingly, the present invention is directed to a complete combustion mechanism for a diesel engine that substantially obviates one or more of the problems due to limitations and disadvantages of the related art.

An object of the present invention is to provide a complete combustion mechanism for a diesel engine which absorbs an intense heat created at the time of explosion, and heats the air, reabsorbed after exhaust stroke, up to 6500C to obtain more than 97 percent combustion efficiency, thus enhancing an output of power and reducing the fuel consumption and exhaust gas.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described, the present invention discloses a complete combustion mechanism for a diesel engine having a cylinder block, a cylinder head, and a head gasket, including a plurality of heat-proof disks made of a special heat-resistant alloy steel to be installed between the head gasket and the cylinder head, and slightly larger than the inner diameter of a cylinder. The heat-proof disks each have a space on which an intake valve and an exhaust valve operate, and a plurality of

heat-proof projections inwardly formed on its surface except the portion where the space is not formed, for absorbing an intense heat created at the time of explosion, and heating up the air, reabsorbed after exhaust stroke.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

Brief Description of Drawings The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention: In the drawings: FIG. 1 is a perspective view of a complete combustion mechanism for a diesel engine in accordance with the present invention; FIG. 2 is a sectional view of a diesel engine with the inventive complete combustion mechanism; and FIG. 3 is an exploded-perspective view of the diesel engine in accordance with the present invention.

Best Mode for Carryinq Out the Invention Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

In a diesel engine 4 having a cylinder block 1, a cylinder head 2, and a head gasket 3, heat-proof disks 6 made of a special heat-resistant alloy steel of five metals are interposed between head gasket 3 and cylinder head 2. Heat- proof disks 6 are larger than the inner diameter of a cylinder 5 with a thickness of 0.2mm. Each heat-proof disk 6 includes a space 8 on which an intake valve 7 and an exhaust valve 7a operate, and a plurality of heat-proof projections 9 inwardly formed on its surface except the portion where space 8 is formed so as to absorb an intense heat of 12000C produced during explosion and maximally heat the air reabsorbed after exhaust stroke.

The heat-resistant alloy steel constituting heat-proof disks 6 contains about 60 to 70% iron (Fe), about 20 W chromium (Cr), about 5% nickel (Ni), about 5% copper (Cu), and about 3% aluminum (Al). The mixture ratio of the heat- resistant alloy steel and its components are not limited to the above. In other words, an alloy steel of iron, chromium and nickel may form a heat-proof disk. The high temperature absorption factor of this alloy steel of three metals may be

slightly lower than that of the alloy steel of five metals, and there is no problem.

Since the inside of the diesel engine is too narrow, if heat-proof disk 6 is thick, it may contact cylinder head 2, thus producing a frictional noise during air suction and exhaustion. Heat-proof disk 6 is formed to a thickness of 0.6m/m and less, and the most preferable thickness is 0.2mm (the heat-proof disk with a thickness of more than lm/m makes a noise). The inventive combustion system may be applied to a gasoline engine as well as a diesel engine.

Reference numerals 10 and 11 denote a piston and a nozzle, respectively.

The following description concerns the operation of the present invention.

While the air is drawn into cylinders 5 through intake valve 7, piston 10 is moved up to compress the air. The fuel is injected into a combustion chamber about the time when the compression stroke is completed, and a spontaneous ignition by the compressed heat sets off an explosion, thus producing an intense heat amounting to 12000C. A part of this heat is absorbed by heat-proof projections 9 of each of heat-proof disks 6 interposed between head gasket 3 and cylinder head 2.

After the explosion stroke and exhaust stroke, fresh air is drawn into cylinders 5 and instantaneously heated up by the

heat held by heat-proof disks 6. At this point, when the compression stroke starts to inject the fuel into the combustion chamber, the temperature of the compressed air goes up to 6500C.

As the temperature of the compressed air is increased to the maximum point about the time when the compression stroke is completed, the fuel, injected into the combustion chamber through nozzle 11, becomes more minute by the high temperature and high pressure. Therefore, the fuel starts to burn at high speed.

According to the present invention, the air is first heated up to 6500C under the high pressure, and the fuel injection and ignition are then turned on, thus producing more than 97 percent complete combustion. The increase in the combustion efficiency enhances an output of power and reduces the fuel consumption, thus minimizing exhaust gas. In addition, the present invention may reduce the noise and vibration, and particularly decrease the fuel consumption by 15 to 20%, thus assuring a long life for a vehicle engine.

It will be apparent to those skilled in the art that various modifications and variations can be made in the complete combustion mechanism for a diesel engine of the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.