JP2000179369A - Pre-mixture compression self-ignition engine and operation control method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation control method and a device of a pre-mixture compression self-ignition engine which omits heating the intake manifold or reduces a load on starting, thereby executing simple start and output control with accuracy. SOLUTION: This pre-mixture compression self-ignition engine is operated by self-igniting fuel-air pre-mixture G made by previously mixing fuel gas F and intake air A, by a piston of high compression ratio. In the engine, a self- ignition accelerator is supplied by, fuel-air pre-mixture G self-ignition accelerator supplying means, a combustion operation state is detected, a detection signal is judged, and the supply amount of the self-ignition accelerator is regulated, whereby the engine is controlled so as to perform a normal self-ignition operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a premixed compression ignition engine which operates by preigniting a premixed gas in which fuel gas and intake air are preliminarily mixed with a piston having a high compression ratio, and a control method thereof. More specifically, the present invention relates to a technique for improving the startability of such a homogeneous charge compression ignition engine and appropriately controlling its output.

[0002]

2. Description of the Related Art In a premixed compression ignition engine that operates by self-ignition by inhaling a premixed gas obtained by mixing fuel gas and intake air, it is necessary to supply the premixed gas at a high temperature in order to perform stable operation. There is. In the conventional example shown in FIG. 22, the intake air Air sucked at the outside air temperature becomes heated air A by the intake heating device 201, is led to the intake pipe 202, reaches the mixer 206, where it is mixed with the fuel gas Fg. The premixed gas Gp is thus obtained. Then, the premixed gas Gp is combusted by the engine 208 from the mixed gas pipe 203 via the intake port 209 and is discharged as exhaust gas Eg.

[0003] In this process, the intake heating device 2 is used for stable combustion.
The heating capacity of 01 becomes a large factor, and determines the required time until the oil and water temperatures of the engine that can be started up to a predetermined temperature. The heating of the intake air Air by the intake heating device 201, the reduction of the energy supply required for the heating, and the omission of the time required for warm-up are recognized as problems to be solved in the prior art.

Further, since the output of the premixed compression ignition engine is determined by the air ratio of the premixed gas Gp at the time of self-ignition, the air supply pressure to the engine, and the like, manual output control is difficult. There is also a problem.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems of the prior art, and it has been proposed to provide a premixed compression ignition engine in which intake air heating at the time of starting is omitted and output control is accurately performed. It is an object to provide an operation control method and apparatus.

[0006]

The relationship between the self-ignitability and the output increase / decrease in the homogeneous charge compression ignition engine has the following relationship. That is, self-ignition becomes easier as the amount of a self-ignition accelerator, such as ozone, which reacts with NOx (nitrogen oxide) in intake air or oxygen in the atmosphere to generate NOx increases. Further, as the air ratio decreases or the fuel gas amount increases, the output increases and self-ignition becomes easier.

The present invention has been proposed focusing on such a relationship.

That is, a premixed compression ignition engine according to the present invention is a premixed compression ignition engine which operates by preigniting a premixed air in which fuel gas and intake air are preliminarily mixed with a piston having a high compression ratio. Auto-ignition accelerator supply means for supplying an auto-ignition accelerator to the engine, an operating state detecting device for detecting an operating state of the engine, and the auto-ignition accelerator based on a detection signal transmitted from the operating state detecting device And a control unit having a function of controlling the supply means.

The self-ignition accelerator supply means connects the self-ignition accelerator container for storing the self-ignition accelerator, an intake system for supplying a premixed gas to the engine, and the self-ignition accelerator container. It is preferable to include a piping system and a supply amount control device interposed in the piping system to control the supply amount of the self-ignition accelerator.

With this configuration, the present amount of the self-ignition accelerator in the container can be confirmed, and sudden lack of the agent can be prevented.

In the practice of the present invention, nitrogen oxides (NOx) and ozone are preferred as autoignition accelerators. Here, ozone reacts with nitrogen in the air to generate NOx, and is added to the intake gas or supplied to the engine in an unburned stage to become NOx by a chemical reaction to improve auto-ignition properties. is there.

The self-ignition accelerator supply means includes a generator for generating a self-ignition accelerator, a suction system for supplying a premixed gas to the engine, and a piping system for connecting the generator.
It is preferable to include a supply amount control device interposed in the piping system to control the supply amount of the self-ignition accelerator generated by the generator.

With this configuration, when necessary, the necessary amount of N
Ox or ozone can be generated without the need to store reserves.

Further, the self-ignition accelerating agent supply means is provided with an auxiliary engine attached to the engine, a piping system for mixing exhaust gas of the auxiliary engine into the premixed gas, and interposed in the piping system. It is preferable to include an exhaust gas supply amount control device that adjusts an exhaust gas flow rate of the auxiliary engine, and an auxiliary engine fuel supply amount control device that adjusts a fuel supply amount of the auxiliary engine.

With this configuration, NOx contained in the exhaust gas of the auxiliary engine is used as a self-ignition accelerator.

The self-ignition accelerator supply means includes a self-ignition accelerator container for storing the self-ignition accelerator, and an injection supply means for injecting and supplying the self-ignition accelerator stored in the container to the engine. A piping system communicating the self-ignition accelerator container with the injection supply means, and a self-ignition accelerator injection amount control device interposed in the piping system to control the injection amount of the self-ignition accelerator.
And preferably contains

According to this structure, the present amount of the self-ignition accelerator in the container can be confirmed, and sudden lack of the agent can be prevented.

Alternatively, the self-ignition accelerator supply means includes a generator for generating a self-ignition accelerator, an injection supply means for injecting and supplying the self-ignition accelerator generated by the generator to the engine, It is preferable to include a piping system for communicating the device with the injection supply means, and a self-ignition accelerator injection amount control device interposed in the piping system and controlling the injection amount of the self-ignition accelerator.

With this configuration, when necessary, the necessary amount of N
Ox or ozone can be generated without the need to store reserves.

In practicing the present invention, the self-ignition accelerator supply means controls a recirculation device for recirculating a part of the exhaust gas of the engine to the intake side, and controls a recirculation amount of the exhaust gas recirculated by the recirculation device. A recirculation amount control device, an injection device for injecting liquid fuel to a cylinder of the engine, and an injection amount control device for adjusting an injection supply amount from the injection device, wherein the control unit includes the operation state detection device Is preferably configured to control the recirculation amount control device and the injection amount control device based on the detection signal transmitted from the controller.

According to the above, NOx is generated in the engine by injecting and supplying light oil, and NOx in the exhaust gas is recirculated to enhance self-ignitability. The control unit refers to an operation state map or the like stored in advance and adds an appropriate amount of light oil directly into the cylinder at a predetermined timing, adjusts the exhaust gas recirculation amount, and performs normal self-ignition.

In the above, the recirculation position of the recirculated exhaust gas is preferably downstream of the mixer for generating the premixed gas, that is, on the engine side. This is to prevent a situation in which the mixer is blocked by foreign matter in the recirculated exhaust gas.

A premixed compression ignition engine according to the present invention is a premixed compression ignition engine which operates by preigniting a premixed gas in which fuel gas and intake air are preliminarily mixed with a piston having a high compression ratio. A fuel gas control device for adjusting the supply of fuel gas, a self-ignition accelerator supplying means for supplying a self-ignition accelerator to the engine, an operating state detecting device for detecting an operating state of the engine, and the operating state detecting device And a control unit having a function of controlling the fuel gas control means and the self-ignition accelerator supply means based on the detection signal transmitted from the control unit.

According to the present invention, the output is increased or decreased by increasing or decreasing the fuel gas, that is, by increasing or decreasing the air ratio, and the self-ignition accelerator is added to the premixed gas in accordance with the amount of the intake fuel gas to produce an output. Perform control. The self-ignition accelerator in this case hastens the self-ignition timing and contributes to the output improvement. Further, the control unit can obtain a predetermined output by adjusting the fuel gas amount corresponding to the predetermined output and the addition amount of the self-ignition accelerator by referring to an operation state map or the like stored in advance.

Here, the self-ignition accelerator supply means includes a recirculation device for recirculating a part of the exhaust gas of the engine to the intake side,
A recirculation amount control device for controlling a recirculation amount of exhaust gas recirculated by the recirculation device, an injection device for injecting liquid fuel into a cylinder of the engine, and an injection amount control device for adjusting an injection supply amount from the injection device The control unit is configured to control the fuel gas control device, the recirculation amount control device, and the injection amount control device based on a detection signal transmitted from the operating state detection device. Is preferred.

According to the above, NOx is generated in the engine by injecting and supplying light oil, and NOx in the exhaust gas is recirculated to enhance self-ignitability. The control unit refers to an operation state map or the like stored in advance and adds an appropriate amount of light oil directly into the cylinder at a predetermined timing, adjusts the exhaust gas recirculation amount, and performs normal self-ignition.

In the above, the recirculation position of the recirculated exhaust gas is preferably downstream of the mixer for generating the premixed gas, that is, on the engine side. This is to prevent a situation in which the mixer is blocked by foreign matter in the recirculated exhaust gas.

The self-ignition accelerator supply means includes a self-ignition accelerator container for storing the self-ignition accelerator, a suction system for supplying premixed gas to the engine, and a piping system for connecting the self-ignition accelerator container. And a supply control device interposed in the piping system for controlling the supply of the self-ignition accelerator.

With this configuration, the current amount of the auto-ignition accelerator in the container can be confirmed, and sudden lack of the agent can be prevented.

Further, the self-ignition accelerator supply means includes a generator for generating the self-ignition accelerator, a suction system for supplying a premixed gas to the engine, and a piping system for connecting the generator.
It is preferable to include a supply amount control device interposed in the piping system to control the supply amount of the self-ignition accelerator generated by the generator.

With this configuration, the necessary amount of N
Ox or ozone can be generated without the need to store reserves.

The self-ignition accelerator supply means is provided with an auxiliary engine attached to the engine, a piping system for mixing exhaust gas of the auxiliary engine into the premixed gas, and a piping system. It is preferable to include an exhaust gas supply amount control device that adjusts an exhaust gas flow rate of the auxiliary engine, and an auxiliary engine fuel supply amount control device that adjusts a fuel supply amount of the auxiliary engine.

According to this structure, NOx contained in the exhaust gas of the auxiliary engine is used as a self-ignition accelerator.

The self-ignition accelerator supply means includes a self-ignition accelerator container for storing the self-ignition accelerator, and an injection supply means for injecting and supplying the self-ignition accelerator stored in the container to the engine. A piping system communicating the self-ignition accelerator container with the injection supply means, and a self-ignition accelerator injection amount control device interposed in the piping system and controlling the injection amount of the self-ignition accelerator. Preferably.

According to this structure, the present amount of the self-ignition accelerator in the container can be confirmed, and sudden lack of the agent can be prevented.

Alternatively, the self-ignition accelerator supply means includes a generator for generating a self-ignition accelerator, an injection supply means for injecting and supplying the self-ignition accelerator generated by the generator to the engine, It is preferable to include a piping system for communicating the device with the injection supply means, and a self-ignition accelerator injection amount control device interposed in the piping system and controlling the injection amount of the self-ignition accelerator.

With this configuration, the necessary amount of N
Ox or ozone can be generated without the need to store reserves.

The operation control method of the premixed compression ignition engine according to the present invention is a premixed compression ignition engine which is operated by self-igniting a premixed air in which fuel gas and intake air are premixed with a piston having a high compression ratio. In the operation control method, a detection step of detecting a combustion operation state, and supply of a self-ignition accelerator supplied to the premixed gas by self-ignition accelerator supply means based on a detection signal obtained in the detection step A self-ignition accelerator supply amount controlling step of controlling the amount.

The operation control method for a premixed compression self-ignition engine according to the present invention is a premixed compression self-ignition engine which operates by preigniting a premixed air in which fuel gas and intake air are premixed with a piston having a high compression ratio. An operation state detection step of detecting an operation state of the engine; a fuel gas control device for adjusting the supply of the fuel gas based on a detection signal obtained in the operation state detection step; Controlling a self-ignition accelerator supply means for supplying an auto-ignition accelerator to the engine;
And characterized in that:

According to the present invention having the above-described structure, the self-ignition accelerator is added to the premixed gas to improve the self-ignition property and improve the startability, and the self-ignition timing is advanced,
It also contributes to output improvement. In addition, the control unit can add a self-ignition accelerator to the premixed air with reference to an operation state map or the like stored in advance, and perform normal self-ignition.

As the self-ignition accelerator container, a cylinder which is generally used as a pressure container is preferable.

As the self-ignition accelerator generating device, N
It is preferable to use an Ox generator or an ozone generator. Here, as the NOx generation device, (for NOx generation)
A burner or the like can be used. As the ozone generator, a so-called ozonizer that generates ozone by silent discharge in air can be used.

The auxiliary engine may be a gas engine,
The injection timing of the diesel engine may be adjusted and used for NOx generation.

In implementing the operation control method of the homogeneous charge compression ignition engine of the present invention, a self-ignition accelerator container is provided as a self-ignition accelerator supply means, and NOx or ozone stored therein is supplied to the intake system. Is preferred.

It is preferable to provide a NOx generator or an ozone generator as a means for supplying the self-ignition accelerator, and supply NOx or ozone therefrom.

Further, in carrying out the operation control method of the homogeneous charge compression ignition engine of the present invention, an auxiliary engine attached to the engine is provided as a self-ignition accelerator supply means, and the exhaust gas of the auxiliary engine is supplied to the self-ignition accelerator. It is preferably supplied as.

Alternatively, it is preferable that a NOx generator or an ozone generator is provided in the engine as a means for supplying the self-ignition accelerator, and NOx or ozone is injected and supplied from the NOx generator into the engine.

When the operation control method of the premixed compression ignition engine of the present invention is carried out, a self-ignition accelerator container is provided as a self-ignition accelerator supply means, and NOx or ozone stored therein is injected into the engine. Preferably, it is supplied.

In addition to the above, when the operation control method of the homogeneous charge compression ignition engine of the present invention is carried out, a part of the exhaust gas of the engine is returned to the intake side as a self-ignition accelerator supplying means, and the engine is recirculated. Injecting and supplying liquid fuel (light oil) to the cylinder, detecting the operating state of the engine, judging the detection signal,
It is preferable to control the normal self-ignition operation by adjusting the exhaust gas recirculation amount and the supply amount of the light oil.

In practicing the present invention, the operating condition detecting device is capable of detecting or measuring various parameters indicating operating conditions, such as in-cylinder pressure, engine speed, premixed air temperature, oil water temperature, and the like. If so, there is no particular limitation.

[0051]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a method and apparatus for controlling the operation of a homogeneous charge compression ignition engine according to the present invention.

In FIG. 1 showing the first embodiment, a premixed compression ignition engine generally designated by the reference numeral 8 is provided with an intake port 9 to which an air-fuel mixture is supplied from an intake system, and an exhaust gas for discharging combustion gas. A pipe 10 and an operating state detecting device 14 for detecting an operating state of the engine are provided.

The intake port 9 is provided with a pre-mixture G for normal operation of the engine 8 or a mixture G obtained by adding a self-ignition accelerator g to the mixture G to improve startability at the time of starting.
g, any of them can be supplied.

An intake system Ka (an intake system for supplying a premixed gas to the engine) includes an intake pipe 2 for introducing air A heated by a heating device (not shown) and a fuel pipe for introducing fuel gas F from a fuel supply source (not shown). 4, a mixer 6 (for example, a mixer or the like) for stirring and mixing the air A and the fuel gas F, and a mixed air pipe 3 connecting the mixer 6 and the intake port 9.

The self-ignition accelerating agent supply means indicated by the reference sign Sc
A self-ignition accelerator container (hereinafter abbreviated as a container) 11 formed of a pressure container and storing NOx or ozone, and NO
A supply amount control device (hereinafter abbreviated as a control device) 12 for adjusting the supply amount of x or ozone, and a self-ignition accelerator supply tube (hereinafter abbreviated as a tube) connecting the control device 12 and the air-fuel mixture tube 3. 13).

The exhaust system denoted by reference numeral Ha is configured such that the exhaust gas Eg burned is exhausted by an exhaust pipe 10 mounted on the engine 8 toward an exhaust gas purifying means (not shown).

The cylinder head 8a of the engine 8 has an in-cylinder pressure,
An operating state detecting device 14 for detecting or measuring various parameters indicating an operating state such as an engine rotation speed, a premixed air temperature, an oil water temperature and the like is mounted, and a control unit 16
It is connected to.

The control unit 16 includes a computer, and is connected to the operating state detecting device 14 by a signal line 15 and is connected to the control device 12 by a control line 17. Further, the control unit 16 stores and stores a reference operation standard map (or a chart or function showing characteristics, etc.) using, for example, in-cylinder pressure, combustion timing, rotation speed, and other variables as variables. Control device 1 with reference to
2 has a function of controlling

The operation of the homogeneous charge compression ignition engine 8 having the above configuration will be described with reference to FIG. 1 and FIG.
First, the engine is started based on a predetermined cranking rotation and the like. Next, heated air A heated to a predetermined temperature from the intake pipe 2, fuel gas F from the fuel pipe 4,
NOx or ozone is supplied from the container 11 to the engine 8. The supply amount of NOx or ozone at the time of starting is adjusted and determined by the control device 12 according to the predetermined amount calculated from the standard map.

The heated air A and the fuel F are stirred and mixed in the mixer 6 to form a premixed gas G. The premixed gas G is directed to the intake port 9 via the mixed gas pipe 3. Here, the self-ignition accelerator g limited to an appropriate amount by the supply amount control device 12
(NOx or ozone) is injected and supplied to the mixed air pipe 3,
The air-fuel mixture Gg is supplied to the intake port 9. After the engine 8 that has taken in the mixture Gg, the self-ignition is promoted by NOx or ozone in the mixture Gg.
The self-ignition operation gradually becomes steady due to the warm-up of the engine 8 (step S1).

When the self-ignition operation is stabilized (step S1 is completed), the operating state detecting device 14 measures the in-cylinder pressure and the like (step S2). The measurement result or the measurement data is sent to the control unit 16 via the signal line 15, and the control unit 16 refers to a map or the like to verify whether or not the operation state is the expected state (step S).
3).

If the operating state is not in the expected state and it is necessary to enhance the self-ignition property, NO in step S3 is selected, and in step S5, the self-ignition accelerator (NOx or ozone)
Is adjusted, and the process returns to step S2. On the other hand, if it is determined in step S3 that the operation state is the desired state, YES is selected and the self-ignition operation is continued (step S4). At this time, for example, output control as shown in the flowcharts of FIGS. 17 to 21 can be performed with the configuration as shown in FIGS.

FIG. 2 shows another embodiment of the present invention, in which a self-ignition accelerator is generated by a NOx generator or an ozone generator, and the generated auto-ignition accelerator j is added to a premixture G. The configuration for supplying is shown. A description will be given mainly of parts different from the first embodiment.

The structure of the intake system Kb is substantially the same as that of the first embodiment. The auto-ignition accelerator supply means Sf
It comprises a self-ignition accelerator generating device 31, a control device 32 for adjusting the supply amount of the self-ignition accelerator, and a pipe 33 connecting the control device 32 and the mixture pipe 3. The self-ignition accelerator generating device 31 includes a burner that generates NOx as an auto-ignition accelerator, or an ozonizer that generates ozone. Here, any known burner or ozonizer may be used.

The functions of the exhaust system Hb, the operating state detecting device 14, the control unit 36 and the like are substantially the same as those of the first embodiment.

The operation of the apparatus having the above configuration is shown in the control flowchart of the first embodiment (FIG. 13).
Almost the same. Here, the supply of NOx or ozone in step S1 and step S5 in FIG. 13 is different from the first embodiment in FIG. 1 in the second embodiment in FIG. Are different.

In this embodiment, as in the first embodiment, the configuration shown in FIGS.
Output control as shown in the flowchart of FIG. 21 can be performed.

FIG. 3 shows a third embodiment of the present invention. In this embodiment, the self-ignition accelerator is supplied by the exhaust gas of the auxiliary engine. That is, a configuration is shown in which NOx contained in the exhaust gas of the auxiliary engine is supplied to the premixture G as the self-ignition accelerator. A description will be given mainly of parts different from the first embodiment.

The structure of the intake system Kc is substantially the same as that of the first embodiment. In FIG. 3, a self-ignition accelerating agent supply means generally indicated by Se is an auxiliary engine 51, an intake system for operating the auxiliary engine 51, and a control device 52 (exhaust gas) for controlling the supply of exhaust gas from the auxiliary engine 51. A supply amount control device), a pipe 53 connecting the control device 52 and the mixing pipe 3,
It is composed of The intake system for operating the auxiliary engine 51 includes a fuel pipe 42 for supplying the fuel f, a fuel control device 43 for controlling a supply amount of the fuel f, an intake pipe 44 for taking in the air aj, and an intake air aj. A mixer (for example, a mixer) 46 for mixing the fuel f.

The control unit 56 includes the operating state detecting device 1
4 and a signal line 15, and the control device 52 is connected to the control line 1.
7 and to the fuel control device 43 via a control line 18. Then, the control unit 56 controls each of the control devices 52 and 43 with reference to an operation map and the like from a detection signal from the operation state detection device 14. Here, the control unit 56
Is substantially the same as that of the embodiment of FIGS. 2 and 3, although the number of control targets is increased.

The operation of the apparatus having the above configuration will be described below with reference to the flowchart shown in FIG.

The operation (step S21), operation state detection (step S22), and determination (step S23) of the engine 8 are substantially the same as the control shown in FIG.
If the operation state is not the expected state in the operation state determination in step S23 (NO in step S23), the intake control of the auxiliary engine 51 and the supply of the exhaust gas to the mixed gas pipe 3 are controlled. That is, if the supply amount of the self-ignition accelerator is small, control is performed to increase the supply amount of NOx, which is the self-ignition accelerator. Conversely, if the supply amount of the self-ignition accelerator is excessive, NOx The control is performed to reduce the supply amount (step S25).

If the engine 8 is operating normally (step S23 is YES), the self-ignition operation is performed in step S24. At this time, similarly to the above-described embodiment, the output control as shown in the flowcharts of FIGS. 17 to 21 can be performed with the configuration as shown in FIGS.

FIG. 4 shows a fourth embodiment of the present invention. In this embodiment, the self-ignition accelerator h
Thus, the fuel is supplied directly into the engine 8 in the early stage of the compression stroke. A description will be given mainly of portions different from the above-described first to third embodiments.

In the intake system Kd, the mixer 6 and the intake port 9 are connected by the mixture pipe 3 so that only the premixed gas G is supplied into the engine 8.

The self-ignition accelerator supply means Sd is provided in the container 11
And control device 1 for adjusting the supply amount of NOx or ozone
2 (a self-ignition accelerator injection amount control device) and a pipe 23 connecting the control device 12 and the injection device 24. The injection device 24 is provided with NOx supplied via the control device 12.
Alternatively, it is mounted so that ozone is injected and supplied to the cylinder 8b.

The control unit 26 is connected to the operating state detecting device 14 via the signal line 15 and to the control device 12 via the control line 17. Its control unit 26
Has a function of referring to an operation standard map stored in the memory and judging a signal from the operation state detection device 14 to control a supply amount of the self-ignition accelerator and an injection timing to the cylinder 8b.

The operation of the apparatus having the above configuration will be described with reference to the flowchart shown in FIG. The steps of operation of the engine 8 (step S11), detection of the operation state (step S12), and determination (step S13) are substantially the same as those of the first to third embodiments. If it is determined in the operation state determination in step S13 that the state is not the expected state (step S13 is NO), the self-ignition accelerator (NOx or NOx) supplied from the injection device 24 into the cylinder 8b by adjustment of the control device 12 The supply amount and timing of ozone) are adjusted (step S15) to normalize the operation. Then, the process returns to step S12. On the other hand, if it is determined in step S13 that the initial operating state has been achieved (YES in step S13), the self-ignition operation is continued (step S14). At this time, the output control as shown in the flowcharts of FIGS. 17 to 21 can be performed with the configuration as shown in FIGS.

FIG. 5 shows a fifth embodiment of the present invention. In this embodiment, the self-ignition accelerator (NOx or ozone) is generated by the generator 31 and the generated self-ignition accelerator is directly injected into the engine 8 by the injection device 34 at the beginning of the compression stroke. I have to. Hereinafter, portions different from the embodiment of FIG. 4 will be mainly described.

The self-ignition accelerator supply means Sk includes a self-ignition accelerator generation device 31, a control device 32 for adjusting the supply amount of the self-ignition accelerator, a pipe 35 connecting the control device 32 and the injection device 34, and And a self-ignition accelerator generating device 3
Reference numeral 1 denotes a burner that generates NOx or an ozonizer that generates ozone. Other intake system Ke,
The configuration functions of the control unit 36 are the same as those of the embodiment of FIG.

The operation of the embodiment of FIG. 5 is substantially the same as the flowchart shown in FIG. 14 (the operation of the embodiment of FIG. 4). However, unlike the embodiment of FIG. 4, the difference is that NOx or ozone is not stored in a container but is generated by the generator 31 each time. In other respects, substantially the same control as that shown in FIG. 14 is performed, and the same operation is achieved.

FIG. 6 shows a sixth embodiment of the present invention. In this embodiment, N in the exhaust gas recirculation (EGR gas)
By controlling Ox and injection supply of light oil that generates NOx by burning in the engine, the starting control of the homogeneous charge compression ignition engine is configured to be performed. 1 to 5
The differences from the above embodiment will be mainly described.

A recirculation pipe 63E is connected to the mixed gas pipe 3 from an exhaust pipe 10 of the engine 8 via a recirculation valve 64E. In the illustrated embodiment, the position of the reflux is downstream of the mixer 6 in order to prevent the mixer 6 from being blocked by foreign matter or the like. However, if the blockage of the mixer 6 is eliminated, the reflux pipe 63E may be joined upstream of the mixer 6.

The control unit 66 is connected to the recirculation valve 64 via a control line 68 and to the injection control device 62 via a control line 67. And the control unit 66
It has a function of controlling the recirculation valve 64 and the injection control device 62 based on an operation state detection signal input via the signal line 15 by making a determination on a map or the like.

Reference numeral Sj denotes liquid fuel supply means, which includes a light oil tank 61 for storing light oil as liquid fuel,
The injection control device 62 is configured to adjust the supply amount of light oil, and the pipe 63 connects the injection control device 62 and the injection device 64. The intake system Kf is configured so that only the air-fuel mixture G enters.

Next, the operation of the apparatus according to the above configuration will be described with reference to FIG.
This will be described with reference to the flowchart of FIG.

First, in step S31, the engine is operated while self-ignition is promoted by injection of light oil and NOx in the recirculated gas. The operation state detection (step S32) and the determination (step S33) are the same as in the other embodiments described above.

If it is determined in step S33 that the operating state is not the predetermined state (step S33 is N
O), the light oil supply amount, the injection supply timing, and the exhaust gas recirculation amount are adjusted (step 35). That is, when it is necessary to increase the supply amount of the self-ignition accelerator, the injection control device 62 increases the light oil injection amount to increase the amount of NOx contained in the exhaust gas of the engine 8, and the recirculation valve The EGR gas amount which joins the mixer G is increased by increasing the valve opening of 64E. As a result, the concentration of NOx contained in the intake air, that is, the supply amount of the self-ignition accelerator is increased. Conversely, when the supply amount of the self-ignition accelerator is reduced, the injection control device 62 reduces the light oil injection amount, reduces the valve opening of the recirculation valve 64E, and reduces the EGR gas amount. good.

If it is determined in step S33 that the operation is normal (step S33 is YES), the self-ignition operation is continued (step S34). At this time, similarly to the above-described embodiment, the configuration shown in FIGS.
Output control as shown in the flowchart of FIG. 21 can be performed.

FIG. 7 shows a seventh embodiment of the present invention. The first to sixth embodiments aim at stabilizing and promoting the self-ignition operation at the time of starting, whereas the following embodiments relate to operation control after the self-ignition operation is stabilized. And FIG.
In the embodiment, the output control is performed by adjusting the supply amount and supply pressure of the fuel gas, maintaining the self-ignitability by injecting and supplying a self-ignition accelerator corresponding to the fuel gas amount, and performing self-ignition by NOx during exhaust gas recirculation. In this configuration, the output is controlled by the exhaust gas recirculation while maintaining the performance. A description will be given while omitting the function contents that are the same as those described above.

In FIG. 7, a recirculation pipe 63E is connected to the mixed gas pipe 3 from an exhaust pipe 10 of the engine 8 via a recirculation valve 64E (recirculation amount control device). In the illustrated embodiment, the position of the reflux is downstream of the mixer 6 in order to prevent the mixer 6 from being blocked by foreign matter or the like. However, if the blockage of the mixer 6 is eliminated, the reflux pipe 63E may be joined upstream of the mixer 6.

The control unit 76 is connected to the recirculation valve 64 via a control line 68 and to the injection control device 62 via a control line 67. And control unit 7
Reference numeral 6 has a function of controlling the recirculation valve 64 and the injection control device 62 by judging the operating state detection signal transmitted via the signal line 15 with a map or the like.

The intake system Kh includes an intake pipe 73 for introducing air A heated by a heating device (not shown), a fuel pipe 74 for introducing fuel gas F from a fuel supply source (not shown), and a gas control device for adjusting the amount of fuel gas. (Fuel gas control device) 75 and air A
Mixer (such as a mixer) 6 for stirring and mixing the fuel gas F
And a mixed air pipe 3 connecting the mixer 6 and the intake port 9. The intake port 9 is configured so that only the mixture G generated by the mixer 6 enters.

The liquid fuel supply means Sk includes a light oil tank 61 for storing a liquid fuel such as light oil, and an injection control device (injection amount control device) 62 for adjusting the light oil supply amount.
And a pipe 6 connecting the injection control device 62 and the injection device 64
And 3.

The operation of the apparatus having the above configuration will be described with reference to the flowcharts of FIGS.

In FIG. 17, the operation of the engine 8 is performed while injecting light oil into the engine at a predetermined fuel gas amount and supply pressure while supplying NOx (in the recirculated gas) as a self-ignition accelerator. Perform (step S41). That is, by supplying light oil to the engine 8, NOx is contained in the exhaust gas of the engine 8.
(Self-ignition accelerator) and supplies the NOx to the engine 8 as EGR gas.

Then, the operation state is detected by measuring various parameters indicating the operation state, such as the in-cylinder pressure, for example (step S42), and the predetermined output and the injection timing for judging the self-ignition property are normal. It is determined with reference to a map or the like (step S43). If it is determined in step S43 that the operating state is not the predetermined state (step S43 is NO), the fuel gas supply amount and the supply pressure, the light oil supply amount, the injection supply timing, and the exhaust gas recirculation amount according to the subroutine SR1 shown in FIG. Is adjusted (step S45).

That is, in step S45, when it is necessary to increase the supply amount of the self-ignition accelerator, the injection control device 62 increases the light oil injection amount to increase the NOx amount contained in the exhaust gas of the engine 8. And the reflux valve 64
By increasing the valve opening of E, the amount of EGR gas joining the mixer G is increased. As a result, the NO contained in the intake air
The x concentration, that is, the supply amount of the auto ignition accelerator is increased. Conversely, when the supply amount of the self-ignition accelerator is reduced, the injection control device 62 reduces the light oil injection amount and the recirculation valve 64
What is necessary is just to reduce the EGR gas amount by reducing the valve opening degree of E.

On the other hand, if it is determined in step S43 that the operation is normal (step S43
S), it is determined whether or not to continue driving (step S4)
4) If the operation is to be continued (step S44 is YE
S), the process returns to step S42 to constantly check the operation state, and the predetermined state is continued.

As described above, the adjustment in step S45 is performed according to the subroutine SR1 shown in FIG.

In FIG. 18, whether to control the output in step S51 or to control the advance / retard of the self-ignition timing is selected. If the output is to be controlled ("output control" in step S51), the supply amount of the fuel gas F is controlled by the gas control device 75 (step S52). The output increases when the supply amount of the fuel gas increases, and decreases when the supply amount decreases. Therefore, the supply amount of the fuel gas is determined according to a predetermined output.

In the next step S53, NOx corresponding to the air ratio is added. That is, based on the air ratio, NOx for maintaining the self-ignition property is added.

In step S54, it is determined whether the output is at a predetermined value. If step S54 is YES
In step S58, it is determined whether the subroutine SR1 may be ended. When the subroutine SR1 ends, the process returns to step S45 of the main routine shown in FIG. 17, and further returns to step S42.

If it is determined in step S54 of subroutine SR1 that the output is not the predetermined output (step S54 is N
O) Return to step S52 to control the fuel gas supply.

On the other hand, when the control of advance / retard of the self-ignition timing is selected in step S51 (step S51).
Is "timing control"), and in step S56, the amount of added NOx (or the amount of added ozone) as the self-ignition accelerator is controlled. However, in the embodiment of FIG. 18, only the control of the NOx addition is performed.

Here, if the NOx addition amount is small, the self-ignition timing is delayed and the output goes down, and if it is large, the self-ignition timing advances and the output goes up. In step 57,
It is determined whether it is a predetermined self-ignition timing. Step 5
If it is determined in step 7 that the timing is the predetermined timing (step S57 is YES), the process proceeds to step S58.
If step S57 is NO, the process returns to step S56 to repeat the NOx addition control.

As described above, in the subroutine SR1, the output and the self-ignition timing are set to predetermined values, and the process returns to the main routine S45.

FIG. 23 shows the subroutine SR1.
FIG. 3 is a schematic diagram schematically showing the contents of the above as a relationship where the intake air temperature and the intake air pressure are kept constant. In FIG. 23, the output is plotted on the vertical axis and the self-ignition timing is plotted on the horizontal axis. For example, when the output is centered on the air ratio (3) and the added NOx (100 PPM), the air ratio ( 2) Add NOx (50P
In (PM), the output rises to (10). Further, with the air ratio (3) and the added NOx (150 PPM), the output increases as the self-ignition timing is advanced.

FIG. 8 shows an eighth embodiment of the present invention, in which the supply amount and supply pressure of the fuel gas are adjusted, and a self-ignition accelerator p suitable for the fuel is supplied from a container for storing NOx or ozone. Thus, a configuration for performing output control is shown.

A description will be given mainly of portions different from the embodiment shown in FIG. Note that devices having the same function use the same reference numerals.

The intake system Ki includes an intake pipe 73 for introducing air A heated by a heating device (not shown), a fuel pipe 74 for introducing fuel gas F from a fuel supply source (not shown), and a gas control device for adjusting the amount of fuel gas. The mixer 6 includes a mixer 6 for stirring and mixing the air 75, the air A and the fuel gas F, and a mixed air pipe 3 connecting the mixer 6 and the intake port 9. The intake port 9 is configured so that only the mixture G generated by the mixer 6 enters.

The self-ignition accelerator supply means Sk includes a container 11 for storing NOx or ozone, which is an auto-ignition accelerator, a control device 12 for adjusting the supply amount of the self-ignition accelerator, and a control device And a pipe 13 connecting the two.

The control unit 86 is connected to the operation state detecting device 14 by a signal line 15 and is connected to the control device 12 by a control line 17.
And to a gas control device 75 via a control line 79. The control unit 86 has a function of processing or calculating the operation state detection signal transmitted via the signal line 15 based on a map or the like, and controlling each of the control devices 12 and 75.

The operation of the apparatus having the above configuration will be described with reference to a flowchart shown in FIG. First, the operation of the engine 8 is performed at a predetermined fuel gas amount and supply pressure while injecting light oil into the engine and supplying the self-ignition accelerator (step S61). Then, the operation state is detected by measuring various parameters indicating the operation state such as, for example, in-cylinder pressure (step S62), and a predetermined output and a fuel injection timing for judging self-ignition are determined by a map. The determination is made with reference to the like (step S63). Step S63
If the operation state is not the predetermined state, the supply amount and the supply pressure of the fuel gas and the supply amount of NOx or ozone as the self-ignition accelerator are adjusted (step 65). On the other hand, if the operation is determined to be normal in step S63 (step S6)
3 is YES), it is determined whether or not to continue the operation (step S64). If the operation is to be continued (step S64 is YE).
S), the process returns to step S62 to constantly check the operation state, and the predetermined state is continued.

In the above, the adjustment in step S65 is performed by using the subroutine SR of FIG.
Perform by 1.

FIG. 9 shows a ninth embodiment of the present invention, in which a self-ignition accelerator p corresponding to a predetermined fuel gas supply amount is replaced with NO.
A configuration is shown in which the self-ignition accelerator generated by the x-generation device or the ozone generation device and supplied is supplied to the premixture G. A description will be given mainly of portions different from the above embodiments.

The self-ignition accelerator supply means Sm includes a self-ignition accelerator generation device 31, a control device 32 for adjusting the supply amount of the self-ignition accelerator, and a pipe 13 connecting the control device 32 and the mixed gas pipe 3. It is configured. Self-ignition accelerator generating device 31
Is composed of a burner that generates NOx, which is a self-ignition accelerator, or an ozonizer that generates ozone. The other constituent functions of the intake system Kj and the control unit 106 are the same as those in the embodiment of FIG.

The operation of the apparatus having the above configuration is substantially the same as that performed according to the flowchart of FIG. 19 and the subroutine SR1 of FIG. 18 showing the operation of the above-described embodiment, and a description thereof will be omitted.

FIG. 10 shows a tenth embodiment of the present invention. In this embodiment, at the time of the output control, the supply of the self-ignition accelerator in accordance with the supply amount of the fuel gas is performed by supplying the exhaust gas of the auxiliary engine to the premixture G of the engine 8. A description will be given mainly of parts different from the above-described embodiment.

The self-ignition accelerator supply means Sn is provided with the auxiliary engine 5
1, an intake system for operating the auxiliary engine 51, and an auxiliary engine 5
The control device 52 includes a control device (exhaust gas supply amount control device) 52 for controlling the supply of the exhaust gas, and a pipe 53 connecting the control device 52 and the mixed gas pipe 3. The intake system for operating the auxiliary engine 51 includes a fuel pipe 42 for supplying the fuel f.
A fuel control device (auxiliary engine fuel supply control device) 43 for controlling the supply amount of fuel f, an intake pipe 44 for taking in air aj, and a mixer 4 for mixing intake air aj with fuel f.
6, and

The control unit 126 is connected to the operating state detecting device 14 by a signal line 15 and is connected to the control device 5 by a control line 17.
2, the control line 18 connects to the air control device 43, and the control line 79 connects to the gas control device 75.
The control unit 126 has a function of controlling each of the control devices 52, 43, and 75 based on a detection signal transmitted from the operation state detection device 14 and referring to an operation map and the like. The control of the control unit 126 is substantially the same as in each of the above embodiments, although the number of control objects is increased. The intake system Km is substantially the same as the configuration of the embodiment shown in FIGS. 7 to 9, and is configured so that the gas control device 75 adjusts the fuel gas F.

The operation of the apparatus having the above configuration will be described with reference to a flowchart shown in FIG. First, the operation of the engine 8 is performed at a predetermined fuel gas amount and supply pressure while injecting light oil into the engine and supplying the self-ignition accelerator (step S91). Then, the operation state is detected by measuring various parameters indicating the operation state such as the in-cylinder pressure or the like (step S92), and the predetermined output and the injection timing for judging the self-ignition property are mapped to determine whether the injection timing is normal. The determination is made with reference to the like (step S93).

If it is determined in step S93 that the operating state is not the predetermined state (step S93 is NO).
O), the fuel gas supply amount and supply pressure, and the exhaust gas supply amount of the auxiliary engine 51 are adjusted. In this case, the control of the auxiliary engine 51 is performed by controlling the fuel supply to the auxiliary engine 51 and controlling the supply of the exhaust gas from the auxiliary engine 51 to the mixture pipe 3 (step 95). That is, if the supply amount of the self-ignition accelerator is small, control is performed so as to increase the exhaust gas of the auxiliary engine 51 in order to increase the supply amount of NOx as the self-ignition accelerator. Conversely, if the supply amount of the self-ignition accelerator is excessive, control is performed so as to reduce the exhaust gas of the auxiliary engine 51 in order to reduce the NOx supply amount.

If it is determined in step S93 that the operation is normal (YES in step S93), it is determined whether or not to continue the operation (step S94). YES), the process returns to step S62 to constantly check the operation state, and the predetermined state is continued.

The above control is also performed by the subroutine SR1 of FIG. 18 used in the above embodiment.

FIG. 11 shows an eleventh embodiment of the present invention, in which the supply of the self-ignition accelerator p corresponding to the supply amount of the fuel gas is directly injected into the engine from the container storing NOx or ozone. It has become.

The intake system Kn is substantially the same as that of the embodiment shown in FIGS. 7 to 10, and is configured such that the gas control device 75 adjusts the supply amount of the fuel gas F.

The self-ignition accelerator supply means Sp is provided in the container 11
And a control device 12 for adjusting the supply amount of the self-ignition accelerator (NOx or ozone) stored in the container 11, and a pipe 23 connecting the control device 12 and the mixed gas pipe 3.

The control unit 96 is connected to the operating state detecting device 14 by a signal line 15, connected to the control device 12 by a control line 17, and connected to a gas control device 75 by a control line 79. The control unit 96 has a function of controlling each of the control devices 12 and 75 with a map or the like based on the operation state detection signal transmitted via the signal line 15.

First, the operation of the engine 8 is performed at a predetermined fuel gas amount and supply pressure while injecting light oil into the engine and supplying the self-ignition accelerator (step S71). And
For example, the operating state is detected by measuring various parameters indicating the operating state such as the in-cylinder pressure (step S72), and a map or the like is used to determine whether the predetermined output and the injection timing for judging the self-ignition property are normal or not. A determination is made with reference to this (step S73).

When it is determined in the operation state determination in step S73 that the state is not the predetermined state (NO in step S73)
Adjusts the supply amount and supply pressure of the fuel gas and the addition supply amount of NOx or ozone (step S75). If the operation is normal (step S73 is YES), it is determined whether or not to continue the operation (step S74). If the operation is continued (step S74 is YES), a step for constantly checking the operation state is performed. Returning to S62, the predetermined state is continued.

In the above control, the adjustment in step S75 is performed by the subroutine SR1 of FIG. 18 used in the above embodiment.

FIG. 12 shows a twelfth embodiment of the present invention, in which a self-ignition accelerator p suitable for a predetermined fuel gas supply amount is used.
(NOx or ozone) is generated by a NOx generation device or an ozone generation device, and the generated self-ignition accelerator is injected and supplied to the cylinder 8.

The difference from the configuration in FIG. 11 is that the auto-ignition accelerating agent supply means Sq is a NOx generation device (for example, a burner) or an ozone generation device (for example, an ozonizer). Since this is the same as the eleventh embodiment, a duplicate description will be omitted.

[0135]

The effects of the present invention are listed below. (1) Various parameters for supplying a self-ignition accelerator (for example, NOx or ozone) for promoting self-ignition to the engine when the engine is started, and displaying the operating state with an operating state detecting device so that the operating state becomes a predetermined state. Is detected and the supply of the self-ignition accelerator is automatically controlled, so that a stable start is possible, and high-temperature heating of the intake air is not required. Therefore, the installation of the intake heater,
The supply of supply energy can be omitted, and the time required for starting operation is reduced. (2) If the self-ignition accelerator supply means is supplied with the self-ignition accelerator stored in the container, there is no sudden lack of the agent. (3) If the self-ignition accelerator supply means is supplied from a NOx generating device or an ozone generating device, a necessary amount of the self-ignition accelerator can be obtained when necessary, so that spare storage and management become unnecessary. (4) If the self-ignition accelerator supply means is configured to supply the exhaust gas of the auxiliary engine, NOx in the exhaust gas becomes the self-ignition accelerator and the handling is easy. (5) Diesel oil is injected into the engine and the exhaust gas of the engine is
If the self-ignition accelerator is supplied by merging with the premixed gas by R, NOx generation and control are easy. (6) If the self-ignition accelerator is injected and supplied to the premixed gas, the supply is easy. (7) The ignition timing can be adjusted by injecting and supplying the self-ignition accelerator to the cylinder. (8) If the exhaust gas is recirculated and NOx in the exhaust gas is used as the self-ignition accelerator, NOx generation and control are easy. (9) If the main output control is performed by adjusting the supply amount and the supply pressure of the fuel gas and the ignition timing control is performed by adjusting the supply amount of the self-ignition accelerator, the output control is easily and effectively performed.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an apparatus showing an embodiment of the present invention.

FIG. 2 is a configuration diagram of an apparatus showing another embodiment of the present invention.

FIG. 3 is a configuration diagram of an apparatus showing another embodiment of the present invention.

FIG. 4 is a configuration diagram of an apparatus showing another embodiment of the present invention.

FIG. 5 is a configuration diagram of an apparatus showing another embodiment of the present invention.

FIG. 6 is a configuration diagram of an apparatus showing another embodiment of the present invention.

FIG. 7 is a configuration diagram of an apparatus showing another embodiment of the present invention.

FIG. 8 is a configuration diagram of an apparatus showing another embodiment of the present invention.

FIG. 9 is a configuration diagram of an apparatus showing another embodiment of the present invention.

FIG. 10 is a configuration diagram of an apparatus showing another embodiment of the present invention.

FIG. 11 is a configuration diagram of an apparatus showing another embodiment of the present invention.

FIG. 12 is a configuration diagram of an apparatus showing another embodiment of the present invention.

FIG. 13 is a flowchart showing the operation of FIGS. 1 and 2;

FIG. 14 is a flowchart showing the operation of FIG. 3;

FIG. 15 is a flowchart showing the operation of FIGS. 4 and 5;

FIG. 16 is a flowchart showing the operation of FIG. 6;

FIG. 17 is a flowchart showing the operation of FIG. 7;

FIG. 18 is a subroutine of the flowchart of FIG. 17;

FIG. 19 is a flowchart showing the operation of FIGS. 8 and 9;

FIG. 20 is a flowchart showing the operation of FIG. 10;

FIG. 21 is a flowchart showing the operation of FIGS. 11 and 12;

FIG. 22 is a configuration diagram of a conventional homogeneous charge compression ignition engine with improved startability and output control device.

FIG. 23 is a diagram showing a relationship between factors related to the startability and the output of the homogeneous charge compression ignition engine.

[Explanation of symbols]

 A: intake F: fuel Eg: exhaust gas G: premixed gas g: auto-ignition accelerator 2: intake pipe 3: mixed gas pipe 4: fuel pipe 6. ..Mixer 8 ... Engine 8a ... Cylinder head 8b ... Cylinder 9 ... Intake port 10 ... Exhaust pipe 11 ... Self ignition accelerator container 12 ... Supply control device 13 ... 14. Operating condition detection device 15. Signal line 16. Control unit 17. Control line 24. Injection device

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F02D 43/00 301 F02D 43/00 301M 301N F02M 25/00 F02M 25/00 K 25/07 550 25/07 550G 570 570J (72) Inventor Joji Amano 2-13-7-811 Midori, Sumida-ku, Tokyo (72) Inventor Yasuharu Kawabata 3-3-3308-304 F-term, Shiomidai, Isogo-ku, Yokohama, Kanagawa Reference) 3G062 AA01 BA00 CA06 FA08 GA00 GA01 GA05 GA06 GA12 GA15 GA21 3G084 AA01 AA05 BA00 BA11 BA13 BA20 CA01 DA09 DA13 EB08 FA21 3G092 AA00 AA05 AA06 AA17 AA20 AB03 AB06 AB12 AB18 BB01 BB06 FA09 EB06 HD09 HE01Z HE08Z 3G301 HA02 HA13 JA00 JB09 KA01 LA00 MA11 MA19 NC02 NE11 NE12 PB05B PC01Z PE01Z PE08Z

Claims (16)

[Claims] 1. A premixed compression ignition engine which operates by preigniting a premixed air in which fuel gas and intake air are preliminarily mixed with a piston having a high compression ratio, and supplies a self-ignition accelerator to the engine. A control unit having an ignition accelerator supply unit, an operation state detection device for detecting an operation state of the engine, and a function of controlling the self-ignition accelerator supply unit based on a detection signal transmitted from the operation state detection device And a premixed compression ignition engine characterized by comprising: 2. The self-ignition accelerator supply means connects a self-ignition accelerator container that stores a self-ignition accelerator, an intake system that supplies premixed gas to the engine, and the self-ignition accelerator container. 2. The premixed compression ignition engine according to claim 1, comprising a piping system, and a supply control device interposed in the piping system to control a supply amount of the self-ignition accelerator. 3. The self-ignition accelerator supply means includes a generator for generating a self-ignition accelerator, a piping system for connecting an intake system for supplying premixed gas to the engine and the generator, 2. A premixed compression ignition engine according to claim 1, further comprising a supply amount control device interposed in the system to control a supply amount of the self-ignition accelerator generated by the generator. 4. The self-ignition accelerating agent supply means includes an auxiliary engine attached to the engine, a piping system for mixing exhaust gas of the auxiliary engine into the premixed gas, and an intervening engine. 2. The premixed compression ignition according to claim 1, further comprising an exhaust gas supply amount control device for adjusting an exhaust gas flow rate of the auxiliary engine, and an auxiliary engine fuel supply amount control device for adjusting a fuel supply amount of the auxiliary engine. organ. 5. The self-ignition accelerator supply means includes a self-ignition accelerator container for storing the self-ignition accelerator, and an injection supply means for injecting and supplying the self-ignition accelerator stored in the container to the engine. A piping system communicating the self-ignition accelerator container with the injection supply means, and a self-ignition accelerator injection amount control device interposed in the piping system and controlling the injection amount of the self-ignition accelerator. The homogeneous charge compression ignition engine of claim 1 including: 6. The self-ignition accelerator supply means includes: a generator for generating a self-ignition accelerator; an injection supply means for injecting and supplying the self-ignition accelerator generated by the generator to the engine; 2. A piping system for communicating a generator with the injection supply means, and a self-ignition accelerator injection amount control device interposed in the piping system for controlling an injection amount of a self-ignition accelerator. Premixed compression ignition engine. 7. A recirculation device for recirculating a part of the exhaust gas of the engine to an intake side, and a recirculation amount control device for controlling a recirculation amount of the exhaust gas recirculated by the recirculation device. And an injection device for injecting liquid fuel into a cylinder of the engine, and an injection amount control device for adjusting an injection supply amount from the injection device, wherein the control unit is transmitted from the operating state detection device. 2. The premixed compression ignition engine according to claim 1, wherein the control unit controls the recirculation amount control device and the injection amount control device based on a detection signal. 8. A premixed compression self-ignition engine which operates by preigniting a premixed air in which a fuel gas and intake air are premixed with a piston having a high compression ratio, and controls a supply of the fuel gas. A device, a self-ignition accelerator supplying means for supplying a self-ignition accelerator to the engine, an operating state detecting device for detecting an operating state of the engine, and a device for detecting an operating state of the engine based on a detection signal transmitted from the operating state detecting device. A premixed compression ignition engine comprising: a fuel gas control unit; and a control unit having a function of controlling the self ignition accelerator supply unit. 9. A recirculation device for recirculating a part of the exhaust gas of the engine to an intake side, and a recirculation amount control device for controlling a recirculation amount of the exhaust gas recirculated by the recirculation device. And an injection device for injecting liquid fuel into a cylinder of the engine, and an injection amount control device for adjusting an injection supply amount from the injection device, wherein the control unit is transmitted from the operating state detection device. 9. The homogeneous charge compression ignition engine according to claim 8, wherein the control unit controls the fuel gas control unit, the recirculation amount control unit, and the injection amount control unit based on a detection signal. 10. The self-ignition accelerator supply means connects a self-ignition accelerator container that stores a self-ignition accelerator, an intake system that supplies premixed gas to the engine, and the self-ignition accelerator container. 9. The premixed compression ignition engine according to claim 8, comprising a piping system, and a supply control device interposed in the piping system to control a supply amount of the self-ignition accelerator. 11. The self-ignition accelerator supply means includes a generator for generating a self-ignition accelerator, a piping system for connecting an intake system for supplying premixed gas to the engine and the generator, 9. A supply amount control device interposed in a system to control a supply amount of the self-ignition accelerator generated by the generator.
Premixed compression ignition engine. 12. The self-ignition accelerating agent supply means is provided in an auxiliary engine attached to the engine, a piping system for mixing exhaust gas of the auxiliary engine into the premixed gas, and interposed in the piping system. 9. The premix compression compressor according to claim 8, further comprising an exhaust gas supply amount control device for adjusting an exhaust gas flow rate of said auxiliary engine, and an auxiliary engine fuel supply amount control device for adjusting a fuel supply amount of said auxiliary engine. Ignition engine. 13. The self-ignition accelerator supply means includes a self-ignition accelerator container for storing a self-ignition accelerator, and an injection supply means for injecting and supplying the self-ignition accelerator stored in the container to the engine. A piping system communicating the self-ignition accelerator container with the injection supply means, and a self-ignition accelerator injection amount control device interposed in the piping system and controlling the injection amount of the self-ignition accelerator. 9. The premixed compression ignition engine of claim 8 including: 14. An auto-ignition accelerator supply means, comprising: a generator for generating an auto-ignition accelerator; an injection supply means for injecting and supplying the auto-ignition accelerator generated by the generator to the engine; 9. A piping system for communicating a generator with the injection supply means, and a self-ignition accelerator injection amount control device interposed in the piping system for controlling an injection amount of a self-ignition accelerator. Premixed compression ignition engine. 15. An operation control method for a premixed compression ignition engine in which a premixed air in which fuel gas and intake air are premixed is self-ignited by a piston having a high compression ratio and operated, a detection of detecting a combustion operation state. A self-ignition accelerator supply amount control step of controlling a supply amount of the self-ignition accelerator supplied to the premixed gas by self-ignition accelerator supply means based on the detection signal obtained in the detection step, An operation control method for a homogeneous charge compression ignition engine, comprising: 16. An operation control method for a premixed compression ignition engine in which a premixed air in which fuel gas and intake air are premixed is self-ignited by a piston having a high compression ratio, and the engine is operated. Operating state detecting step, a fuel gas control device for adjusting the supply of the fuel gas based on the detection signal obtained in the operating state detecting step, and a self-ignition accelerator supply for supplying a self-ignition accelerator to the engine Controlling the means for controlling the operation of the homogeneous charge compression ignition engine.