KR20010008012A - Combustion method of internal combustion engine that injects liquefied oxygen and fuel into combustion chamber - Google Patents

Abstract

The present invention relates to a combustion method of an internal combustion engine.

Conventional combustion methods of internal combustion engines inhale and compress air into a combustion chamber to combust it with fuel. Thermal efficiency decreases due to suction and compression processes with high power loss, and incomplete combustion due to lack of oxygen occurs frequently during combustion. place,

In view of this, it is intended to provide a combustion method of a low pollution internal combustion engine with high thermal efficiency.

In detail, in the internal combustion engine, when the top dead center of the piston 10, the ignition plug 12 or the heating plug 13 is assisted by a method of directly injecting liquefied oxygen and fuel into the combustion chamber to burn (explode). Obtained by ignition (ignition).

The combustion method of the internal combustion engine is a two-cycle combustion method in which the explosion and the exhaust are continuous, excluding the suction and the compression stroke, which have a large power loss, and can be completely burned with sufficient oxygen supply, and the combustion is performed at low pressure. One turn, of course, can reduce the muffler's noise process and eliminates complicated air intakes.

Accordingly, the present invention is to provide a combustion method of low pollution, which can reduce the body weight and has high thermal efficiency in an internal combustion engine.

Description

Combustion method of internal combustion engine that injects liquefied oxygen and fuel into combustion chamber

The present invention relates to an internal combustion engine, and to a low pollution combustion method having high thermal efficiency.

However, the conventional combustion method of the internal combustion engine is to inhale and compress the air into the combustion chamber to burn together with the fuel,

A large power loss in the suction and compression process and additional equipment in the suction process are required.

Also in the combustion process, frequent oxygen deficiency; There is a big disadvantage of incomplete combustion because of explosion at high pressure in the compressed state, and there is a disadvantage that a complex exhaust system is accompanied to reduce noise when exhausting by a large explosion of combustion process.

The present invention excludes the suction and compression process with a large power loss, which is pointed out as a problem in the combustion method of the conventional internal combustion engine.

After the explosion (combustion) process of directly injecting liquefied oxygen and fuel into the combustion chamber, respectively, the object is a two-cycle combustion method in which the exhaust process is continuously performed.

1 is a simplified cross-sectional view of a head according to the present invention.

2 is a injection circuit diagram of liquefied oxygen according to the present invention.

3 is a simplified cross-sectional view of a combustion method using gasoline as a fuel according to the present invention.

4 is a simplified cross-sectional view of a combustion method using fuel oil according to the present invention.

<Explanation of symbols for main parts of drawing>

10: piston 11: cylinder head

12: spark plug 13: heating plug

14: cylinder 15: exhaust valve

16: liquefied oxygen, injection nozzle

17: fuel injection nozzle

18: crank shaft 19: cam shaft

20: liquid oxygen tank 21: stop valve

22: check valve 23: variable pressure reducing valve

24: variable flow control valve 25: injection timing opening and closing valve

26: liquefied oxygen

In order to achieve the above object, the present invention, in the operation of the internal combustion engine, at the top dead center of the piston 10, by directly injecting liquefied oxygen and fuel to the combustion chamber, respectively, with the aid of the ignition plug 12 or the heating plug 13 By ignition (ignition) combustion,

Exploding (burning) at the top dead center of the piston (10); Starting the exhaust process at the bottom dead center; It is characterized by a two-cycle combustion method that completes the exhaust at top dead center and leads to the combustion process.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a simplified illustration of the cylinder head 11 of the internal combustion engine according to the configuration of the present invention,

The cylinder head 11 has an exhaust valve 15 with no suction process; A liquefied oxygen injection nozzle 16 for injecting liquefied oxygen; Has a fuel injection nozzle 17 for injecting fuel; It is the structure which has the spark plug 12 or the heating plug 13 for igniting (igniting) a fuel.

The exhaust valve 15 is opened and closed by a cam (cam) of the cam shaft 19 to rotate at 1: 1 speed with the crank shaft 18,

Opening just before the bottom dead center of the piston 10, and closes just before the top dead center is to achieve the exhaust process.

The liquefied oxygen injection nozzle 16 is an injection nozzle for spraying liquefied oxygen into the combustion chamber by the pressure of the storage container,

It is composed of a sequence valve and an orifice pipe which are opened and closed by a constant pressure.

The fuel injection nozzle 17 is an injection nozzle for injecting fuel into a combustion chamber by an injection pump,

It has a needle valve that opens and closes at a certain pressure.

The spark plug 12 is a spark discharge plug for igniting volatile fuel (gasoline),

At the top dead center of the piston 10 during operation of the engine, the spark discharges by the induced current of the ignition coil to help ignition.

The heating plug 13 is a shield type heating plug that receives power from a battery to ignite nonvolatile fuel (light oil),

During the rotation of the engine, it helps to ignite by generating a high heat that can ignite the fuel at all times.

Figure 2 shows the injection circuit of liquefied oxygen according to the configuration of the present invention,

The liquefied oxygen is injected into the combustion chamber by the injection nozzle 16 at a high pressure from the liquefied oxygen tank 20 at room temperature, the operation of each valve of this circuit is as follows.

: Container for storing liquefied oxygen. It maintains pressure at room temperature and is a pressure source of injection pressure.

: Maintenance valve for oxygen circuit. Cock valve.

: Safety device for oxygen circuit, reverse flow and flashback prevention valve.

: Pressure-reducing valve that controls the high pressure of liquefied oxygen tank to injection pressure.

: A valve that controls the amount of liquid oxygen that flows in. It controls the rotational speed of the engine by adjusting the flow rate by the manpower control method.

: Electromagnet direction control valve which opens and closes according to the injection timing. The valve is opened and closed by receiving a single electrical signal from the distributor of the advance device's cam.

: A spray nozzle for spraying liquefied oxygen into a combustion chamber, and having a sequence valve and an orifice pipe opened and closed by a constant pressure.

Fuel according to the configuration of the present invention is refined petroleum (gasoline, diesel), injection circuit is the same as the conventional diesel engine fuel injection furnace,

The fuel is raised to high pressure by the injection pump as in the following circuit, and injected into the fuel injection nozzle 17 into the combustion chamber.

Example 1

3 is a combustion method using gasoline as a fuel according to the configuration of the present invention,

The cylinder head 11 has an exhaust valve 15 having no intake process, a liquefied oxygen injection nozzle 16, a fuel injection nozzle 17, and a spark plug 12. The internal combustion engine is supplied by supplying liquefied oxygen and fuel. Starting; A combustion method of an internal combustion engine in which a combustion process and an exhaust process of two cycles are continuously performed as follows.

Combustion process: High pressure liquefied oxygen supplied to the liquefied oxygen injection nozzle 16 from the liquefied oxygen tank 20 by closing the exhaust valve 15 immediately before the top dead center of the piston 10; The high pressure fuel (gasoline) supplied from the injection pump to the fuel injection nozzle 17 is injected into the simultaneous combustion chamber; Subsequently, spark ignition is performed by the spark plug 12 to be exploded.

Exhaust process: Piston 10 is lowered by the expansion of the combustion (explosion) gas, the exhaust valve 15 is opened immediately before the bottom dead center, the piston 10 is raised to exhaust the combustion gas (gas) Exhaust process is achieved.

Example 2

4 is a combustion method using diesel as a fuel according to the configuration of the present invention,

The cylinder head 11 has an exhaust valve 15 having no intake process, a liquefied oxygen injection nozzle 16, a fuel injection nozzle 17 and a heating plug 13, and supplies liquefied oxygen and fuel to provide an internal combustion engine. Starting; A combustion method of an internal combustion engine in which a combustion process and an exhaust process of two cycles are continuously performed as follows.

Combustion process: High pressure liquefied oxygen supplied to the liquefied oxygen injection nozzle 16 from the liquefied oxygen tank 20 by closing the exhaust valve 15 immediately before the top dead center of the piston 10; High-pressure fuel (via diesel) supplied from the injection pump to the fuel injection nozzle 17 is injected into the simultaneous combustion chamber; Ignition is performed by the heat generating heating plug 13, and it is exploded (burned).

Exhaust process: The piston 10 is lowered by the expansion of the combustion (explosion) gas, the exhaust valve 15 is opened immediately before the bottom dead center, the piston 10 is raised to exhaust the combustion gas (gas) Exhaust process is achieved.

In the conventional combustion method of the internal combustion engine, as described above, thermal efficiency decreases due to a large power loss, and incomplete combustion occurs due to oxygen deficiency. In view of this, a combustion method of a low pollution internal combustion engine having high thermal efficiency is provided.

Therefore, in the combustion method of the internal combustion engine, the conventional method is characterized by a method of injecting and compressing a large amount of power loss and injecting liquefied oxygen and fuel directly into a combustion chamber to burn (explode) the combustion chamber. .

Therefore, the present invention can provide a low pollution internal combustion engine that is high in thermal efficiency and completely burned out.

In addition, the present invention has a merit that can be reduced due to the explosion (combustion) at low pressure, the quiet rotation is made, as well as to reduce the noise process of the muffler, because it does not require an air suction device.

Claims (3)

An exhaust valve 15 having no suction process; It has a liquefied oxygen injection nozzle 16 for injecting liquefied oxygen and a fuel injection nozzle 17 for injecting fuel, and has an ignition plug 12 or a heating plug 13 for igniting (ignition) fuel. Cylinder head 11; In the combustion method of an internal combustion engine which injects liquefied oxygen and fuel into the combustion chamber of this cylinder head 11, The exhaust valve 15 is opened and closed by a cam of the cam shaft 19 which has a 1: 1 rotational speed with the crank shaft 18, The liquefied oxygen injection nozzle 16 has a sequence valve and an orifice pipe opening and closing at a constant pressure, The fuel injection nozzle (17) is a combustion method of an internal combustion engine, characterized in that it has a needle valve to open and close at a predetermined hydraulic pressure. The circuit configuration according to claim 1, wherein the circuit configuration for injecting liquefied oxygen is A liquefied oxygen tank 20 for storing liquefied oxygen, a stop valve 21 for maintaining the oxygen circuit, a check valve 22 for preventing backflow and backfire of the oxygen circuit, and a high pressure of the liquefied oxygen tank to lower the injection pressure. A combustion method of an internal combustion engine having a variable pressure reducing valve (23), a variable flow rate control valve (24) of a manpower control method for adjusting the amount of liquid oxygen, and an injection timing opening / closing valve (25) which opens and closes according to the injection timing. The circuit configuration according to claim 1, wherein the circuit configuration for injecting fuel includes: Fuel is a combustion of an internal combustion engine in which the gasoline or light oil of refined petroleum is injected into the high pressure in the injection pump via the supply pump in the fuel tank, as in the conventional diesel engine fuel injection furnace. Way.