JP2011007168A - Fuel direct injection stratified charge internal combustion engine and stratified combustion technique - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve functions of an engine having a reasonable combustion atmosphere and provide a technique of emitting lower pollution from the engine, by creating an ideal stratified charge condition in which various physical and chemical conditions between an air and a fuel controlling a combustion reaction are made consistent with one another, and an appropriate configuration condition of a combustion chamber is also added.SOLUTION: A new stratified charge condition between a group of air-fuel mixtures and an air layer is provided. A main combustion volume part of a combustion chamber 4 is shaped into a conical cylinder in a central axis area. A combustion chamber volume part 5 having a conical cylinder shape is made to serve as a fuel mixture combustion volume part using a circuit configuration of a lower volume part connected thereto and using action of collision and turbulence between a fuel injection system and a fuel jet. An end area 8 or a squish area 7 of a disk-shaped volume part 6 connected thereto is filled with air or burned gas. The stratified charge condition is constituted by a matrix circuit-like combustion volume part and action of collision, turbulence, and diffusion of a group of fuel jets.

Description

Detailed Description of the Invention

The present invention relates to a stratified charge combustion technique and a low pollution technique for an internal combustion engine.

Internal combustion engines such as gasoline and diesel engines that have played an active role in the creation of civilized societies are consuming great resources as well as consuming the resources of the earth. Development of high-efficiency combustion technology with low CO2 and energy-saving and low-pollution technology is urgently required as an international issue.

The inventor of this technology is the current spark ignition type engine that obtains power by combustion reaction with petroleum or hydroxide fuel and the diesel engine by compression ignition give priority to existing concepts and productivity, and development of new technology is delayed. As a result, we have been enlightening the need for early drastic measures to prevent the earth's resource protection and environmental protection from being too late, and have presented specific technical measures.

First, in the EFI system represented by the automobile engine, the fuel is supplied to the end region of the combustion chamber together with the intake air, so the end gas knocking phenomenon due to this cannot be avoided. Therefore, in the EFI system, it is not possible to use a compression ratio or a high supercharging ratio, and further, it is necessary to throttle the intake air at the time of light load operation.

Direct injection diesel engines, which are used as a power source with high thermal efficiency, are based on a combustion system that diffuses spray from the center area of the combustion chamber to the peripheral area with a multi-hole nozzle. Reliable combustion is being improved, but the method of injecting fuel from the center toward the end of the combustion chamber with multiple injection holes can change the characteristics of the fuel group that reacts simultaneously in each end of the high-pressure and high-temperature atmosphere. However, NOx occurs frequently along with the knocking combustion noise caused by this rapid combustion pressure.

Furthermore, the subsequent portion of the injected fuel flow must be reacted in a hot atmosphere with reduced oxygen due to the reaction of the preceding fuel, and fumigation will proceed, and the end of PM2 · 5 in the exhaust will not depend on the post-processing technology. What is not possible is a major drawback of the current direct-injection diesel engine, and exhaust dust and NOx reduction problems are still unsolved even after 130 years since the development of diesel.

In order to improve the functions common to the spark ignition system and the direct injection diesel system and to reduce pollution, the inventor of this technology firstly knocks to inhibit the combustion reaction and technical means for suppressing a rapid pressure increase rate close to this. By controlling the destructive pressure and noise caused by knocking, it is possible to increase the internal combustion engine's supercharging and adopt a high compression ratio, resulting in quiet, low NOx and economical fuel economy and CO2 emission suppression We are confident that we can realize an engine that is advantageous to

Based on the knowledge of previous engine development experiments, the inventor has found the combustion chamber configuration, the fuel injection conditions, and the combustion chamber to find conditions that are advantageous for the physical alignment of the fuel, air, combustion chamber, and pond that govern the combustion reaction. We have been focusing on constructing uniform flame propagation reaction and diffusion combustion conditions starting from the central region and stratified fuel supply conditions that can suppress the knocking phenomenon by direct fuel injection.

As an example, a collision part of a fuel jet is provided in the central axis region of the combustion chamber between the cylinder head and the piston cavity, and fuel collides with the collision part as an axial jet from the fuel injection nozzle of the head part. Has formed a direct injection type collision diffusion layered air supply engine system with a dense fuel mixture density in the central axis of the combustion chamber and in the vicinity of the collision part, and restrained the fuel development in the squish area and the end area, and announced its operation results and effects I have done it.

Reference paper

SAE Technical Report 871689
SAE Technical Report 881241
SAE Technical Report 9000060
SAE Technical Report 91114
SAE Technical Report 921645
SAE Technical Report 940667
Automobile Society of Japan Academic Lecture Preprint No. 114-08-2008 Nagaya Autumn Meeting (Shin Matsuoka)

Patent Literature

JP-A-62-139921

This combustion system, named OSKA, has already been equipped with NOx and NOx associated with a sudden increase in diesel pressure due to the simultaneous reaction of the direct injection diesel spray end region with a multi-hole diffusion nozzle in the center of the combustion chamber. He clearly pointed out the cause of the fouling of fumigation dust and has already presented the qualities as a basic combustion system that can drastically reform this drawback 20 years ago.

This technology is important for combustion thermal efficiency and exhaust emission control of an internal combustion engine that produces power by burning the fuel in the combustion chamber and using the thermal expansion action of the air to cycle the piston. An ideal stratified charge condition is created by adding the combustion chamber configuration conditions to the alignment of the various physical and chemical conditions of the controlling fuel and air, and the engine function is improved by the rational combustion atmosphere configuration. The purpose is to present technology for reducing pollution of exhaust.

The conventional direct injection method, in which fuel is injected at a high pressure toward the end of the combustion chamber from the multi-hole nozzle located in the center of the combustion chamber, is high in which each fuel group reacts explosively at the arrival zone. The rate of pressure increase and combustion noise cannot be avoided, and it is difficult to physically solve the causes of high NOx and fumigation dust as well as noise even with ultra-high pressure fuel injection and multi-hole nozzle technology.

In the spark ignition EFI system, knocking due to fuel in the end region in the supply air is caused by knocking. In the direct injection diesel system, each fuel jet is diffused by a high-pressure multi-hole nozzle from the center of the combustion chamber to the outer peripheral end region. In addition to the sudden and high pressure combustion noise caused by the simultaneous reaction at the destination, it is impossible to avoid the cause of NOx and fumigation dust, which synergizes to increase the engine's turbocharging and compression ratio. In view of the obstacles, these causes are to be fundamentally solved by a fuel direct injection stratified charge system and a new stratified charge combustion system.

The first invention of the present invention, which was developed to further enhance the functions of various combustion-type internal combustion engines and to reduce the pollution of exhaust gas components, is a method of supplying a fuel mixture by EFI in a spark ignition engine in a premixed manner. In the EFI automobile engine, the cause of the end gas knocking cannot be eliminated and the high supercharging or the high compression ratio cannot be adopted because the fuel reaches the end of the combustion chamber together with the intake air.

In the present invention, the fuel supply method for premixing the fuel and the supply air by using an EFI or a carburetor cannot avoid and solve the end gas knocking phenomenon leading to the destruction of the engine. A direct injection system from the upper part of the shaft is used, and the main combustion volume part of the central axis of the combustion chamber is formed in a cylindrical or circular cylinder, and is positioned at the center part between the intake and exhaust valves of the cylinder head part.

The lower part of the conical cylindrical main volume part is a mechanism for composing a circuit-like combustion chamber volume part in communication with the volume of the disk soot formed between the piston surfaces. An electrode for igniting and igniting the air-fuel mixture is provided in the circular cylindrical main volume part, a fuel jet collision part is provided in the communicating part at the lower part of the conical cylinder, and the center axis of the combustion chamber is obtained by collision diffusion development of the fuel jet group The fuel mixture density is high in the vicinity of the part and the collision part, and the stratified air supply condition of the fuel group is established in which the arrival of the fuel group is suppressed in the end area of the disk-like volume part.

In other words, the combustion chamber is shaped like an upper and lower circuit in order to construct a layered air supply condition for a fuel group in which the mixing condition of the fuel and air is arbitrarily set in the center region of the combustion chamber and the disk-shaped peripheral end region is the air or burned gas region. It has a volumetric structure, and fuel injection conditions are injected and supplied from the upper nozzle of the combustion chamber toward the piston surface as a hollow annular circular diffusion expansion pattern, and the contact conditions with the combustion chamber atmosphere temperature and air density are timed. The reason is that the fuel group vaporization activation conditions are rationally configured.

The gap between the fuel injection nozzle and the piston is separated to promote vaporization and mixing of the injected fuel group and combustion conditions, to suppress the conventional flow of the jet, and to form a stratified expansion of the rich mixture group in the central axis of the combustion chamber and reach the end region A stratified charge combustion system of an internal combustion engine characterized by controlling the fuel is constructed by matching the combustion chamber configuration in the upper and lower circuits of the combustion chamber volume, fuel spray flow, and collision diffusion conditions.

The second invention is a construction of a fuel collision diffusion section capable of realizing ideal combustion conditions that can improve the thermal efficiency of an internal combustion engine and reduce the pollution of noise and exhaust by means of a layered charge system of a fuel group. Even if the processing technology is fully utilized, the fuel injection nozzle can perform the action of dividing the fuel group in multiple directions starting from the collision part and allowing it to diffuse and expand three-dimensionally finely, like the collision diffusion action of the fuel jet. Is not possible. Therefore, the fuel activation and penetration damping effect due to collision disturbance and diffusion mixing of the fuel group in the collision part are important in the configuration conditions of this layered air supply system, and enhance the durability of the collision part and the disturbance mixing effect due to the collision. Therefore, the multi-hole collision part structure formed for this purpose is a collision diffusion deployment technique for fuel groups that does not require ultra-high pressure.

In the third aspect of the present invention, a plurality of fuel jet collision diffusion protrusions and baffle rods are provided in the upper combustion volume configured as a cylinder or a circular cylinder to activate the vaporization of the air-fuel mixture group and the turbulent combustion of the ignition flame group. It is activated by stratified charge and stratified combustion that promotes and suppresses the fuel group injection inertia and diffusion flame edge area inertia, and is activated when a part of the fuel group collides with or comes in contact with the baffle rod part There is a stratified charge combustion method and an ignition technique that do not have a fuel collision surface portion that can perform uniform flame propagation combustion starting from an ignition source.

The fourth invention provides variable control of the opening / closing lift of the injection nozzle core valve as means for controlling the supply fuel diffusion pattern of the hollow annular diffusion fuel jet group from the fuel nozzle at the top of the upper combustion volume of a cylindrical or circular cylinder. Electronic control, operation without reducing the supply air even when there is no load, high compression ratio ignition diffusion combustion that suppresses knocking enables the use of various fuels and energy saving by adopting a high supercharging engine and adopting a high compression ratio And to achieve the goal of low pollution.

A layered air supply method in which the fuel mixture density is arbitrarily set in the central region of the combustion chamber and the peripheral region thereof is surrounded by an air layer, means for realizing the configuration of the combustion atmosphere, and the operation and effect will be described with reference to the drawings.

1, FIG. 2, FIG. 3, FIG. 4, and FIG. 5, 1 is a cylinder block, 2 is a cylinder head, 3 is a piston that reciprocates in 1, 4 is in the cylinder head 2 The central axis combustion chamber volume part, 5 is a fuel injection nozzle, 6 is a spark spark plug or an ignition glow plug, 7 is an intake valve, 8 is an exhaust valve, 9 is a disk-like volume part on the piston surface, 10 is Fuel injection pump, 11 is a fuel jet impingement surface of a piston, 12 is a throttle nozzle, 13 is a circularly propelled hollow spray diffusion type of injected fuel, 14 is a combustion chamber squish area, 15 is a multi-hole shaped fuel injection adjusting section 16 Collision part, 17 is an intake port, 18 is an exhaust port, 19 is a valve operating spring, 20 is a fuel heating device, 21 is a hollow diffusion fuel pattern, a small arrow indicates a fuel jet, and a large arrow indicates the direction of movement of air and exhaust.

The main combustion chamber volume part formed in the central region of the cylinder head part 2 has a small diameter because it is necessary to be provided between the intake and exhaust valves 7 and 8, and the upper part is for the fuel injection nozzle 5 and the left and right thereof for spark ignition or fuel arrival. A plug 6 is provided, and the lower part of the small-diameter conical cylindrical volume part 4 communicates with a disk-like volume part 9 on the piston surface so that the entire combustion chamber volume part is configured in a circuit and shares the heat load of the piston 3.

The fuel injection timing of the spark ignition engine shown in Fig. 1 allows early injection from the intake air of the piston 3, but as with EFI, the early injection spreads over a wide area and diffuses the fuel to the end region and knocks the end region. Will constitute the cause. In order to avoid this problem and control the arrival of fuel at the end of the combustion chamber, if the fuel is injected in the position farthest from each peripheral end, i.e., the central axis of the combustion chamber in accordance with the piston compression stroke, the fuel group will be layered. It can be seen that it is advantageous.

Therefore, if fuel is injected from the upper part to the lower part in the central axis main volume part 4 at the upper part of the cylinder, the main fuel is diffused and deployed in the upper volume part formed between the piston surfaces, and the fuel is distributed to the cylinder peripheral end region. The distribution configuration of the stratified fuel that allows the fuel mixture density to be freely controlled in the central axis region is configured in the combustion chamber space that is increasing by the compression of the piston 3, and the amount of fuel that reaches the end region is small. By adjusting the fuel injection timing Although the conditions of diffusion and expansion change, the basic structure of the stratified fuel region with high fuel expansion density in the central axis region of the combustion chamber does not change, and the expansion of the fuel reaching the end region is suppressed, so the end region knocking phenomenon does not occur. Absent.

Therefore, even when the engine is idling or lightly loaded, it is possible to perform partial load operation without restricting the intake air due to slow injection and stratified combustion characteristics, and when high output is required, the use of a high supercharge or high compression ratio by an exhaust turbine etc. Realized by stratified charge combustion with reduced knocking. According to this stratified combustion system, a wide range of fuels from low quality fuel to gas fuel are used as engine fuels as compression ratios according to the octane number and cetane number of the fuel.

Next, the compression ignition combustion method by this layered air supply method will be described in comparison with the conventional direct injection diesel combustion method.

With a multi-injection nozzle at the center of the combustion chamber and fuel is diffusely injected into the end region of the combustion chamber through the multi-injection holes, the fuel group can be produced no matter how the injection is made ultra-high pressure or small-diameter multi-injection. The basics of physics that reach the end of the combustion chamber and react simultaneously do not change. The rapid direct-injection diesel reaction due to the simultaneous reaction in each end region causes problems with noise, NOx and exhaust dust, making it difficult to solve.

The cause is the directional end region injection method with a multi-hole nozzle of direct injection diesel and the physical condition that the fuel group burns in a high-pressure and high-temperature combustion atmosphere. In addition to fumigation inside, carbonized dust is generated '', and combustion noise and NOx increase due to a sudden pressure increase rate close to knocking caused by simultaneous reaction of fuel groups reaching the end of the combustion chamber due to an ignition delay phenomenon It has the original characteristics of direct injection diesel.

Therefore, in order to improve the function of direct injection diesel and reduce pollution, first consider the existing concept that has been the basis of direct injection diesel engine, and use the multi-hole nozzle from the combustion chamber center area in multiple directions of the combustion chamber multi-end area. It is necessary to look carefully at the limitations of the conventional method of diffusing and injecting fuel and the many contradictions and harmful effects that occur and to determine the fuel, air, and combustion chamber structure that govern combustion.
The need to increase the rigidity of the engine due to the rapid and destructive pressure increase rate and noise countermeasures due to the simultaneous reaction of the fuel jets in each reach area makes the diesel engine heavy and expensive.

The higher pressure rise rate continues to increase NOx during the combustion process, and the problem of carbonization and dust caused by the fumigation reaction of the fuel continues due to the decrease in the air utilization rate in the end region.

For these reasons, in order to increase the thermal efficiency of diesel engines and reduce pollution, the existing combustion method is reviewed and new combustion technology that can be used easily and economically as a familiar motive power for mankind is early in the new combustion technology that can be relieved quietly, powerfully and cheaply It is necessary to promote practical application. To that end, it is possible to construct a rational condition for fuel and air that can perform uniform flame propagation and diffusion flame combustion without knocking starting from the central axis of the combustion chamber. It is necessary to construct stratified charge and combustion conditions.

Therefore, according to the application of the OSKA system characterized by the collision diffusion development of direct injection fuel, the diffusion trend of the collision diffusion fuel group is a three-dimensional and fine diffusion mixture development pattern that is impossible with any machining technique as shown in the photograph. A rich air-fuel mixture region is formed in the center of the combustion chamber where the collision part is installed due to the expansion action that suppresses inertia.

Since the collision diffusion and disturbance of the fuel jet are suppressed by the collision diffusion compared with the jet of the multi-hole nozzle 10, the supply of fuel is less at a position farther away from the atmosphere in the vicinity of the collision portion. As for the injection supply condition of the fuel, a quiet combustion reaction starting from the central region of the combustion chamber is enhanced by colliding with the collision part as a hollow annular diffusion spray of pintle, throttle or soot valve type to promote the diffusion fuel reaction of fuel. Because it is done by supercharging and high compression ratio, the purpose of high efficiency and low pollution of the engine can be achieved without using super high pressure injection technology.

As shown in FIG. 5, the fuel injection nozzle used in the present invention uses a throttle type. By controlling the nozzle heart valve lift, the diffusion and deployment pattern of the injected fuel is a circular hollow annular diffusion pattern. As a small-diameter combustion chamber volume part is injected at a narrow angle from the top of the combustion chamber and collides with air in the volume part, proceeds toward the lower piston volume part, and is vaporized by a fuel collision part provided in a lattice shape in the lower part of the volume part Since mixing and disturbing mixing of high-temperature burned gas are promoted, NOx and PM2 · 5 are reduced, and the burden of combustion heat on the collision part and the piston surface is reduced.

Therefore, if an ignition source is provided in the middle of the small-diameter combustion section extending from the nozzle to the piston volume, a part of the injected fuel group will surely come into contact with the ignition source. The stable and stable combustion reaction proceeds quietly and rapidly, and all of the problems of the diesel engine, including noise and vibration, are improved, and the low pollution of exhaust is realized.

The invention's effect

The effects of the stratified charge system using the direct fuel injection system and the combustion system according to the present invention will be described as follows.

As shown in FIG. 1, the combustion chamber volume side view and front view share the cylinder central shaft portion, the upper portion is a circular thrust volume portion 5, and the disk-shaped volume portion 6 is formed on the piston surface below the lower portion. The combustion chamber has a fuel injection nozzle 11 at the top.

A group of injected fuel from the nozzle 11 is supplied as a narrow-angle, hollow annular injection pattern 23 by adjusting the valve opening lift of the throttle nozzle, and is supplied to the lower piston volume portion while suppressing the penetrability in the axial direction. If the collision is diffused at the cylindrical collision part 9, the fuel is vaporized, mixed and activated in the central axis region of the combustion chamber, the fuel density is high in the central axis region of the combustion chamber, and the fuel group reaching the disc-shaped combustion chamber end region The flow energy is decelerated, and the development of the stratified charge air that does not reach the end region is constituted.

Further, by arranging a plurality of ignition source parts 12 and 13 and a heat-resistant baffle rod 24 so that a part of the diffusion spray pattern is in contact with the upper cylindrical combustion volume part 5 as shown in FIG. Since the particles inside are in contact with the baffle rod and are disturbed, vaporization and activation are promoted, so the fuel jet can be atomized and vaporized by the collision diffusion action of the collision part, so the fuel collision part 9 becomes unnecessary. .

According to such a stratified air supply method and combustion method, various problems that could not be improved by the conventional combustion method can be improved and solved.

First, the combustion noise due to the simultaneous reaction of the multi-hole high pressure injection, which is the cause of the rapid combustion pressure increase rate close to knocking, which has been the characteristic of diesel engines, is reduced, and at the same time, the high combustion pressure and temperature The generated NOx is reduced and the engine is quietly lightened.

This layered air supply method and layered combustion method do not require high power such as ultra-high pressure, and do not require an expensive injection system, improving the thermal efficiency of the intended internal combustion engine, enhancing its functionality, combustion noise, The purpose of reducing harmful components can be reduced, and post-processing burdens such as NOx, soot, SOF, PM2, and 5 that are considered difficult can be reduced, so a great economic effect can be expected along with a reduction in the price of the engine.

In particular, the end gas knocking phenomenon of spark ignition engines that hinders the improvement of engine thermal efficiency and the rapid pressure increase rate close to the knocking of the end region simultaneous reaction due to the multi-hole diffusion nozzle that is considered to be the characteristic of direct injection diesel Since the problems of noise and NOx exhaust dust are solved, it is possible to adopt a high supercharging and high compression ratio, and the effect of dramatically improving the specific output and low pollution problem of the engine is great.

In other words, if the improvement of the internal combustion engine that can be implemented by the current technology is reformed by the stratified charge method and the stratified combustion method of the present invention, the fuel efficiency is significantly lower than the current engine without waiting for a large capital investment and development of a new technology. Engines that are useful for environmental conservation due to pollution can be put to practical use at an early stage.

The multi-hole fuel jet impinging portion 9 can also be effectively configured in a net shape with a heat-resistant wire such as Inconel, and the effect of the heating 22 of the injection valve and the injected fuel system is also effective during operation in a cold region, etc. This technology, which requires power and does not require expensive ultra-high pressure injection technology, improves and solves the functions that have been regarded as a problem of direct injection diesel, and will bring great benefits to the future of the earth and humanity.

FIG. 1 is a side sectional view of an internal combustion engine and a control circuit diagram showing one embodiment of the present invention, Fig. 2 is a plan view of the cylinder head, FIG. 3 is a side sectional view showing another embodiment, FIG. 4 is a flowchart of a fuel injection system and an ignition processing system. FIG. 5 is an enlarged view of the throttle nozzle and a narrow-angle hollow annular spray pattern of the injected fuel group, The top view of a multihole fuel collision part is shown.

DESCRIPTION OF SYMBOLS 1 ... Cylinder 2 ... Piston 3 ... Cylinder head 4 ... Combustion chamber 5 ... Upper circular cylindrical combustion volume part 6 ... Lower disk shaped combustion volume part 7 ... Combustion chamber Squish area 8 ... Combustion chamber end area 9 ... Multi-hole jet collision part 10 ... Multi-hole fuel injection nozzle 11 ... Throttle nozzle 12 ... Spark plug 13 ... Glow plug 14 .... Fuel injection cam 15 ... Fuel pump 16 ... Electronic control unit 17 ... Intake valve 18 ... Exhaust valve 19 ... Intake port 20 ... Exhaust port 21 ... For valve actuation Spring 22 ... Fuel heating device 23 ... Hollow diffusion fuel injection pattern 24 ... Disturbing baffle Small arrow indicates the direction of fuel jet movement Large arrow indicates the direction of air / exhaust movement.

Claims (4)

An internal combustion engine that forms a conical cylindrical combustion chamber volume in the central area of the cylinder head of a piston-type engine to serve as a main combustion volume, and a lower part thereof communicates with a flat disk-shaped piston volume. The engine structure has a combustion ignition ignition plug in the conical cylindrical volume part, and a rough surface in the fuel spray injected from the fuel injection valve on the upper part of the conical cylindrical volume part on the piston central surface of the disk-shaped volume part communicating with the lower part. The particles are collided with the piston surface, and the fuel spray group is activated by micro-evaporation by collision and thermal atmosphere, and the layer structure is characterized by the structure of the combustion reaction zone starting from the center of the combustion chamber and the main combustion volume The structure of the air supply condition is controlled by the fuel annular distribution of the direct injection fuel group and the fuel supply means that controls the inertia. Stratified charge air combustion conditions High-supercharging of the engine by eliminating the knocking phenomenon that occurs at the end of the combustion chamber due to stratified charge combustion with the central region of the combustion chamber that promotes vaporization, mixing, and activation of the fuel group as the main combustion reaction zone Stratified charge combustion method for an internal combustion engine that can achieve a higher compression ratio and lower specific components in exhaust gas while improving specific output. In an internal combustion engine having a combustion chamber volume portion in which the combustion volume portion is provided in a communication area of a cylindrical shape and a disk shape in the central region of the combustion chamber, fuel is injected downward from the upper portion of the cylindrical combustion chamber by the depression hollow annular diffusion method. However, as a means to promote the vaporization, mixing, and activation conditions of an arbitrary fuel mixture group in the cylindrical combustion chamber, a part of the fuel injection diffusion jet group supplied into the cylindrical volume is activated by contact, collision, or disturbance. It is characterized by arranging baffle rod parts made of a plurality of heat-resistant materials so as to promote the gasification, and the disk-like combustion chamber communicated by promoting the vaporization activation of the gas mixture and the heat mixing action of the combustion expansion gas flow The expansion of the fuel group reaching the end region is suppressed through the air or the burned gas layer, and the combustion gas jet that reacts and generates in the combustion volume in the central region of the combustion chamber is developed in the lower disk-shaped volume. Yen in the expansion stroke It is characterized by the structure of stratified combustion conditions that receive the flow of combustion expansion gas with air or inert gas layer in the volume of the volume, and the narrow angle hollow annular diffusion action of fuel and the impact disturbance action by the baffle rod of the cylinder volume Stratified charge combustion system internal combustion engine that builds reliable stratified charge condition and stratified condition in the central region of combustion chamber by promoting miniaturization, vaporization and activation by heat atmosphere. In an OSKA system internal combustion engine that promotes vaporization mixing and combustion reaction of air and fuel in the combustion chamber by direct fuel injection and fuel collision action in the combustion chamber, fuel group injected from the upper fuel injection valve in the combustion chamber central axial region Is a means to increase the systematic factor when the fuel collision part provided at the lower part of the volume part reaches the piston surface, and the distance between the fuel injection valve at the central axis of the combustion chamber and the fuel jet collision part at the lower part is determined. In order to expand, the central volume part is formed in a circular cylindrical shape to be a main combustion chamber part, and the lower region of the circular cylindrical main volume part communicates with a disk-like lower volume part formed between the head part and the piston. In an internal combustion engine characterized by the structure of a combustion chamber that does not have a throttle part in circuit connection between the two combustion chambers, mainly the central axis of the upper combustion chamber promotes the vaporization conditions with the injected fuel group as a hollow annular diffusion spray pattern Between the pistons with a dense fuel mixture density A layered air supply condition that suppresses fuel expansion to the end of the disk-shaped volume part is constructed, and the circuit configuration of the combustion chamber volume, the hollow annular diffusion pattern of the fuel injection nozzle, and the disturbance due to the collision part of the fuel jet The mixing action, heat treatment of the upper surface of the piston and the heating action of the fuel system are used to electronically control the time-series conditions and physicochemical conditions required for vaporization mixing of the fuel group and the composition of the combustion reaction. Establish stratified combustion reaction conditions starting from the center of the chamber, suppress noise and NOx and fumigation dust generation due to sudden combustion in diesel combustion, and eliminate knocking phenomenon due to end gas in spark ignition system Makes it possible to increase the turbocharging and compression ratio of the engine, reduce CO2 by improving the engine's thermal efficiency and achieve energy-saving objectives. Diesel exhaust dust that could not be solved by ultra-high pressure injection technology Stratified charge combustion method for an internal combustion engine which solves the NOx problem by electronic control technology straight 噴方 type by following the injection pressure and the throttle nozzle 100M Pascal. The fuel supply conditions are highly compressed so that any liquid or gaseous fuel can be used as a fuel for compression ignition internal combustion engines, crossing the octane / cetane number wall by matching the combustion chamber structure, fuel injection configuration and fuel heating system. The combustion chamber atmosphere is to be injected and supplied into the combustion chamber as a fuel group that is divided and adjusted according to the injection law, and the structure of the compression ignition combustion reaction zone starting from the center region of the combustion chamber is set to a high compression ratio. The above-mentioned patent is characterized in that it is constructed under the compression-ignition stratified combustion conditions according to the above, and the engine thermal efficiency can be improved by adopting a high compression ratio and operation with high supercharging to achieve the purpose of reducing combustion noise and exhaust pollution. 2. A compression ignition type multi-fuel internal combustion engine according to 2.3.

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