CN107002625A - Ignition module and the method for lighting the combustible fuel mixture in the piston-engined combustion chamber of internal combustion - Google Patents
Ignition module and the method for lighting the combustible fuel mixture in the piston-engined combustion chamber of internal combustion Download PDFInfo
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- CN107002625A CN107002625A CN201480083303.2A CN201480083303A CN107002625A CN 107002625 A CN107002625 A CN 107002625A CN 201480083303 A CN201480083303 A CN 201480083303A CN 107002625 A CN107002625 A CN 107002625A
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- pulse
- precombustion chamber
- ignition module
- plug assembly
- chamber
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P13/00—Sparking plugs structurally combined with other parts of internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
- F02B19/1019—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber
- F02B19/108—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber with fuel injection at least into pre-combustion chamber, i.e. injector mounted directly in the pre-combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/12—Engines characterised by precombustion chambers with positive ignition
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P23/00—Other ignition
- F02P23/04—Other physical ignition means, e.g. using laser rays
- F02P23/045—Other physical ignition means, e.g. using laser rays using electromagnetic microwaves
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/54—Sparking plugs having electrodes arranged in a partly-enclosed ignition chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
A kind of ignition module of the present invention, the ignition module is configured to light the combustible fuel mixture in the piston-engined combustion chamber of internal combustion, the ignition module includes the pre-burning chamber component (14) for being suitable for being attached in the opening of cylinder head (10), the pre-burning chamber component has at least one aperture (18) to provide being in fluid communication between the precombustion chamber and the combustion chamber of the engine (100), and the ignition module further comprises：Pulsed plasma plug assembly with least one electrode, at least one electrode is connected with the space of the precombustion chamber, and the pulsed plasma plug assembly is suitable for producing multiple plasma streamers between at least two electrodes；And control unit, the control unit is provided with executable instruction to activate the pulsed plasma plug assembly to produce pulse.It is a feature of the present invention that, described control unit (62) is provided with the pulse information of the variable for being arranged on the pulse train used in each ignition process when activating the pulsed plasma plug assembly, and described control unit is further provided with executable instruction to activate the pulsed plasma plug assembly using the pulse information to produce the pulse.
Description
Technical field
The present invention relates to a kind of ignition module of preamble according to claim 1.
The invention further relates to a kind of preamble according to dependent method claims to light internal combustion piston-engined
The method of combustible fuel mixture in combustion chamber.
Background technology
The operation requirement of explosive motor becomes more and more higher.Explosive motor is needed with low specific fuel consumption, simultaneously
They also need to meet very strict emission request.In general, when chamber temperature rises, the forming amount of nitrogen oxides
Also increase.Ignition temperature can be reduced by using the high lean fuel mixture of air/fuel ratio.In some cases, it is poor
The burning of fuel mixture may be not exclusively.
In order to tackle emission request, there is various available technology, can be when engine be run by these technologies
Control gas discharge.On the other hand, it is not desired to which the overall performance of engine is damaged because the action of reduction discharge is intended to
Evil.Crucially make combustible fuel mixture highly effective in the cylinder of engine and accurately burn.Therefore, ignition timing
Very important effect is played with ignition strategies.
Have it is several in the combustion chamber of the engine operated using Otto cycle i.e. in cylinder by fuel air mixture
The mode lighted.Typically, electric arc or electric spark are produced using spark plug, and spark plug can arrange in the cylinder so as to by its
In fuel air mixture light.The use of the shortcoming of traditional spark plug (it can also be referred to as arc discharge) is electric arc
Length scale is significantly restrained.Therefore, there may be multiple traditional spark plugs in larger combustion chamber so as to broader
More effectively combustible fuel mixture is lighted on region.In addition, in the case of the spark plug of standard, lighting fuel-air and mixing
The electric pulse of compound can have the duration of some microseconds, and this causes electrical breakdown between the electrodes.Electrical breakdown is in two electricity
Patrilineal line of descent with only one son in each generation pathway is produced between pole, and electric current is that spark starts flowing, until the depleted of energy in ignition coil.The fire of standard
Flower plug can be placed in the precombustion chamber being connected in the cylinder or with main chamber.
For example, the B1 of EP 2097629 disclose a kind of for piston-engined precombustion chamber arrangement, wherein fuel and burning
The mixture of air passes through the spark ignitor that is arranged in precombustion chamber.In the case of corona ignition, fuel-air is mixed
Compound is lighted by high electric-field intensity, without so-called arc discharge.Precombustion chamber is generally using combustion gas as the poor of fuel
Used in combustion Otto engine.Precombustion chamber can be supplied with fuel-rich mixture and burn and be supplied with lean fuel mixture.
The A1 of FR 2 886 689 it is also proposed carries out corona ignition in precombustion chamber, and then the precombustion chamber is in burning
Actual ignition is carried out in room.Fuel injection is carried out as follows：Fuel to certainty ratio can be sent to by pre-burning by opening
Burn indoor.The explosive motor operated by this way tends to occur loss of ignition in operation.Precombustion chamber igniting is based on such as
Lower concept：Light the first fuel air mixture in precombustion chamber, and will light by this way by shifting opening
Fuel air mixture is sent to the combustion chamber of explosive motor, and (at the combustion chamber, point occurs for natural fuel air mixture
Combustion) in.
US 2011/0100322A1, which are disclosed, is also mixed fuel-air using corona ignition in the cylinder of engine
The scheme that compound is lighted.The A1 of US 2011/0100322 disclose a kind of be used for fuel-air in the combustion chamber of explosive motor
The device that mixture is lighted.The device includes being connected to voltage source and the electrode extended in precombustion chamber, wherein occurring corona
Electric discharge.The fuel air mixture lighted in precombustion chamber is transferred to combustion chamber with by fuel air mixture point therein
Combustion.These documents are conceived to the different shape of precombustion chamber, and the transversal inner surface of the precombustion chamber is in the region of at least one opening
Less than the transversal inner surface stretched into electrode in the region in precombustion chamber.In addition, the document discloses lead to precombustion chamber
Inflow entrance.It can will be flowed into and be introduced to rinse precombustion chamber by the inflow entrance.In the preferred case, by fluid intake
Fuels sources are connected to, because fuel or fuel/air mixture can be so introduced in precombustion chamber, and and conventional inlet
Valve independently carries out fuel supply.
WO 2009058339A1 disclose a kind of radio frequency igniter with precombustion chamber.The igniter can have portion
The electrode extended in the precombustion chamber with dividing.The electrode is configured to guiding has the electricity of component of voltage in radio-frequency region
Stream, wherein the electric current produces corona in internal combustion precombustion chamber.
US 2014/0109886A1 disclose for providing pulse power with improve engine effectiveness of performance system and
Method.The pulse power that low-power is converted into high power and long-time input is converted into short time output is additionally used to come
Improve fuel efficiency.
It is an object of the present invention to provide a kind of ignition module, wherein being significantly increased compared with the scheme of prior art
Performance.
The content of the invention
The purpose of the present invention is substantially achieved satisfaction by a kind of thermoelectricity component, and the ignition module is configured to live internal combustion
Combustible fuel mixture in the combustion chamber of piston engine is lighted, and the ignition module includes being suitable for being attached to the opening of cylinder head
In pre-burning chamber component, the pre-burning chamber component has at least one aperture to provide the burning of the precombustion chamber and the engine
Being in fluid communication between room, the ignition module further comprises：Pulsed plasma plug assembly with least one electrode,
At least one electrode is connected with the space of the precombustion chamber and the pulsed plasma plug assembly is suitable at least two
Multiple plasma streamers are produced between electrode；And control unit, it is described to activate that the control unit is provided with executable instruction
Pulsed plasma plug assembly is to produce pulse.It is a feature of the present invention that described control unit is provided with actuating
The pulse information of the variable of the pulse train used in each ignition process is set in during the pulsed plasma plug assembly, and
And described control unit is further provided with executable instruction to activate the pulsed plasma plug using the pulse information
Component produces the pulse.
This provides a kind of ignition module for being used to light combustible fuel mixture, from there through notable using pulse power
Ground improves performance.Compared with prior art, the fuel mixture in burning precombustion chamber lights quick and more reliable.
The ignition module enhances fuel consumption and produces the disposal of pollutants of much less.Thus, improve total combustion process.This tool
Body is because following true：Plasma streamer very work gets over, and these streamers in precombustion chamber simultaneously in some places
Occur.In addition, enhancing lean combustion ability.Streamer is the general modfel of electrical breakdown.They are played a role in the starting stage of spark.Stream
Light is characterised by, strengthens spontaneous field before the discharge channel of growth.
The continuous impulse sequence referred to herein as train of pulse used in once lighting a fire.Train of pulse is in power operation
During the variable controllably arranged.The train of pulse includes each variable being independently adjusted in itself.Each described variable bag
Include two continuous impulses in pulse number, the length of each pulse or duration and the train of pulse in an ignition process
Between interval or the time.
According to an embodiment of the invention, described control unit includes instruction to be produced according to the operating parameter of engine
The raw pulse number used in an ignition process.
According to an embodiment of the invention, when the pulse information includes the pulse persistance of each pulse or pulsed beams
Between and/or the pulse spacing information.
According to an embodiment of the invention, described control unit is provided with executable instruction to activate described pulse etc.
Gas ions plug assembly, so as to produce the pulse that the duration is respectively less than 100ns.
According to an embodiment of the invention, used pulse number is 2 to 40 pulses of igniting every time.
According to an embodiment of the invention, the number of the pulse is less than 30 pulses of igniting every time.
According to an embodiment of the invention, the number of the pulse is less than 20 pulses of igniting every time.
According to an embodiment of the invention, the pulse system is according in the ignition process before one or more
One or more operating parameters of the engine of acquisition are formed.
According to an embodiment of the invention, the pulse information includes the predetermined operational parameters for the engine
Different pulse number mesh value mapping.
According to an embodiment of the invention, the pre-burning chamber component, which is provided with, to be used for fuel charge to the pre-burning
Controllable gaseous fuel inlet port in the space of room, and described control unit be provided with executable instruction so as to with the pulse
The mode that the actuating of plasma plug assembly is synchronous controls fuel charge.
According to an embodiment of the invention, the pre-burning chamber component, which is provided with, to be used for fuel charge to the pre-burning
Controllable gaseous fuel inlet port in the space of room, and described control unit is provided with executable instruction to control the fuel to supply
Send, to provide lean fuel mixture in the combustion chamber of the engine, and lean fuel mixture is provided in the precombustion chamber.
Another object of the present invention is lighted a fire the piston-engined burning of internal combustion by one kind by plasma pulse
The method that combustible fuel mixture in room is lighted realizes that this method comprises the following steps：By with the pre- of precombustion chamber space
It is that combustion chamber component is initiated, the step of the combustible fuel mixture in the piston-engined combustion chamber of internal combustion is lighted；With actuating arteries and veins
Rush plasma plug assembly with produce between the wall at least one electrode and the precombustion chamber space produce pulse and because
And the step of produce the pulse of multiple plasma streamers, in the method, the pulsed plasma plug assembly is utilized a string
Controllable pulse activates and produces multiple pulses.
Spark is formed in order to minimize or avoid to be converted to from plasma, the duration of voltage pulse is extremely short.Root
According to an embodiment of the invention, the step of this method includes producing multiple pulses, each pulse has in the train of pulse
There is 10ns to 100ns duration.This also prevents additional heat and enough for keeping temperature level in combustion, by
This prevents the nitrogen oxides of pollution.Due to the high energy electron produced by pulsed plasma plug assembly, air combustion is enhanced
Expect the burning of mixture.
According to an embodiment of the invention, this method includes generating less than the rise time rapid increase of 100 nanoseconds
Voltage pulse the step of.
According to an embodiment of the invention, controlled according to one or more operating parameters of engine in train of pulse
Pulse number.
According to an embodiment of the invention, introduce the fuel into engine, so that by controlling by means of precombustion chamber
The fuel that gaseous fuel is fed in precombustion chamber to provide poor fuel (λ ＞ Isosorbide-5-Nitraes) mixture into the precombustion chamber of engine, and
Poorer (lime reaches such as even λ ＞ 1,4) fuel mixture is provided into the combustion chamber of engine.In general, air fuel
Equivalent proportion λ (lime reaches) is the ratio for giving mixture actual air fuel ratio and stoichiometry.λ=1.0 are stoichiometry,
Rich mixture λ<1.0, and poor composition λ>1.0.
This provides the effect for reducing NOx emission simultaneously and improving global engine performance, which ensure that fuel gas has
Effect is stably lighted.
According to an embodiment of the invention, from the different pulse number mesh including the predetermined operational parameters for engine
The mapping of value obtains the number of pulse.For example, it can such as be defined as so：More than the 20% of nominal peak power
At load, control system uses 20 pulses of igniting every time.
It is suitably adapted for being located at the piston-engined cylinder of internal combustion according to the pre-burning chamber component of an embodiment of the invention
Gai Zhong, and the pre-burning chamber component includes precombustion chamber and pulsed plasma plug assembly, and the pulsed plasma plug assembly is set
There is at least one electrode, central longitudinal axis of at least one electrode along precombustion chamber extends to precombustion chamber from its first end
It is interior.The precombustion chamber is provided with least one aperture positioned at the second end of the precombustion chamber, so as in the precombustion chamber and engine
There is provided and be in fluid communication between main chamber in cylinder.The precombustion chamber exists at the second end along the electrode towards precombustion chamber
There is circular cross section at each position on central longitudinal direction axis direction, and the inner surface of the precombustion chamber is arranged to relatively
Symmetrically bent with the distance of the first radius i.e. using the end as central point in the end of electrode, so as to be formed to pre-burning
The spherical section of room.
Advantageously, the precombustion chamber has than longitudinal position in the end of the electrode at the first end of the precombustion chamber
Put and locate bigger circular cross section.
According to an embodiment of the invention, the radius of the precombustion chamber be arranged to inner chamber is linearly processed into from
The radius at radius to the lengthwise position for the end for being located at the electrode at the position of the first end of the precombustion chamber.
Brief description of the drawings
Below, the present invention will be described with reference to appended illustrative diagram, wherein：
Fig. 1 shows the ignition module according to an embodiment of the invention；
Fig. 2 shows ignition module according to another implementation of the invention；
Fig. 3 shows ignition module according to another implementation of the invention；
Fig. 4 shows ignition module according to another implementation of the invention；
Fig. 5 shows ignition module according to another implementation of the invention；
Fig. 6 shows the actuation process according to an embodiment of the invention；
Fig. 7 shows ignition module according to another implementation of the invention；And
Fig. 8 shows the ignition module of the further embodiment according to the present invention；
Embodiment
Fig. 1 diagrammatically illustrates explosive motor 100, as it is known in the art, the explosive motor 100 includes one
Or multiple cylinders 102 and cylinder head 104.The engine is provided with ignition module 106, and the ignition module 106 is configured to use
Pre-burning chamber component lights the combustible fuel mixture of the fuel gas in the combustion chamber of internal combustion piston engine 100.According to Fig. 1
Embodiment, the ignition module include pre-burning chamber component 14, the pre-burning chamber component 14 have at least one aperture 18, with this
There is provided and be in fluid communication between the combustion chamber of precombustion chamber and engine 100.The combustion chamber of engine 100 is properly termed as main chamber.
Pre-burning chamber component is provided with the room space for initiating igniting wherein.The ignition module further comprises having and precombustion chamber space 15
The pulsed plasma plug assembly 22 of at least one electrode 23 of connection.In this embodiment, electrode 23 extends to precombustion chamber
In 20.The ignition module is suitable between at least two electrodes for being suitable for the component producing multiple plasma streamers.
In Fig. 1 embodiment, ignition module is suitable for producing between at least one described electrode and the wall in precombustion chamber space multiple
Plasma streamer, the wall operates into an electrode at least one described electrode.The solution of the present invention is using so-called
Pulsed plasma igniting.Pulsed plasma is nonequilibrium plasma.It is also known as non-thermal or low temperature plasma.
In this pulsed plasma ignition system, after component is activated, produce multiple high-voltage pulses, these pulses have from
The duration of 5 nanoseconds to 100 nanoseconds, and each pulse end before electric arc generation.Pulsed plasma plug assembly
Produce and convey the rapid increase acted in precombustion chamber space, ultrashort high-voltage pulse.Pulsed plasma plug assembly 22 connects
Voltage source 60 is connected to, the voltage source 60 is supplied as the energy of the voltage pulse source produced in pulsed plasma plug assembly 22
Amount.
Ignition module further comprises control unit 62, and the control unit 62 is arranged to the electricity for especially controlling ignition module
The operation of potential source 60.The control unit 62 of ignition module 106 is provided with executable instruction, to activate or in other words trigger pulse etc.
Gas ions plug assembly 106, including the step of energy is to produce pulse is applied continuously in, each pulse has holding less than 100ns
The continuous time.Fig. 6 shows the actuation process for deferring to the executable instruction according to the present invention.
Control unit 62 is provided with for being used in each ignition process in activation pulse plasma plug assembly
The pulse information of the variable of pulse train.The pulse train referred to as train of pulse used in once lighting a fire.Train of pulse is to start
The variable controllably arranged in the operating process of machine.Train of pulse includes each variable being independently adjusted in itself.It is described each
Individual variable includes the interval or time between pulse number, the length of each pulse or duration and two continuous impulses.
Pulse information is available to control unit 62, for example, control unit 62 is arranged into the memory cell with the information that has been stored with
63 communications.In addition, control unit 62 is provided with executable instruction, to use the pulse information activation pulse plasma plug group
Part, to produce multiple pulses.In this respect, once igniting refers to, one of cylinder will be directed in one or more stages
The charging burnt in cyclic process is lighted.It should be understood that the control unit can be a part for the electrically operated system 64 of engine.
Pulse information can according to all cylinders in the same cylinder of engine or engine it is one or more before
One or more operating parameters of the engine obtained in ignition process are formed.So, the igniting is suitable for engine
Each igniting of cylinder.The number of pulse is advantageously 2 to 40 pulses of igniting every time.
According to the embodiment of the present invention, memory cell 63 includes having with one or more predetermined operational parameters of engine
The mapping of the different pulse number mesh value of pass.
In the embodiment of figure 1, pre-burning chamber component 14 is provided with for by fuel charge to the gas in precombustion chamber space
State fuel channel 25 and entrance 26.The pipeline is arranged to herein to be connected with liquid fuel source 70.Pipeline 25 is provided with control
Reach the valve member 27 of the The fuel stream in precombustion chamber space.When power operation, combustible fuel mixture is in precombustion chamber 20
Light, the fuel mixture then lighted is sent in combustion chamber 40 via aperture 18, and there mix actual ignitable fuel
Compound is lighted.Valve member 27 is arranged to be controlled by control unit 63, thus for pulsed plasma plug assembly actuating come
Suitably the operation of arrangement valve member 27 is direct feed of the fuel to precombustion chamber.The valve member 27 of pipeline 25 is controlled so as to causing
Opened before or while moving pulse plasma plug assembly.The control unit is provided with executable instruction and supplied with controlling to start fuel
The duration for activating the synchronously fuel of feed at the time of sending and with pulsed plasma plug assembly.So, Ke Yi
In precombustion chamber suitable environment is provided for fuel ignition.In addition, the wall 24 of precombustion chamber 20 may be used as one of electrode, so that
In pulsed plasma plug assembly 22 and wall 24 (when voltage source 60 supplies voltage to pulsed plasma plug assembly 22 wall 24
Ground connection) between produce electric field.
If see from Fig. 1, cylinder head 10 includes the access road 50 for being used to introduce air into combustion chamber 40.It is excellent
Selection of land, the major part of the fuel gas used within the engine is mixed with the air in access road 50.As in the art
Known, access road 50 is provided with least one inlet valve 25, so as to control into the The fuel stream in the cylinder 40 of engine.
Cylinder head 10 also includes the exhaust passage 52 for being respectively arranged with least one air bleeding valve 46.
Fig. 2 shows the pre-burning chamber component 14 according to an embodiment of the invention.The pre-burning chamber component 14 is suitable for
It is attached in the opening of the cylinder head 10 of explosive motor and is operated using the incendiary source as engine.Such precombustion chamber
Component is particularly useful for burning gaseous fuels in a combustion chamber and engine uses the fuel during operation of lean combustion Otto cycle
Light.
Pre-burning chamber component 14 includes the pulsed plasma plug assembly 22 for being provided with electrode 23.Electrode 23 is along precombustion chamber 20
Central longitudinal axis CL extend certain distance into precombustion chamber 20 from its first end 20.1.The wall 24 of precombustion chamber 20 is suitable for using
Make the negative electrode of the electrode 23 of pulsed plasma plug assembly.Precombustion chamber 20 is provided with the second end 20.2 of precombustion chamber 20
At least one aperture 18, so as to provide being in fluid communication between precombustion chamber 20 and the combustion chamber 40 of engine.First end and second
End refers to central longitudinal axis CL direction.The number in aperture can change according to practical application.
Precombustion chamber 20 is every on the central longitudinal axis CL at the second end along electrode 23 towards precombustion chamber 20 direction
There is the circular cross section perpendicular to axis CL at individual lengthwise position X.For example, the cross section positioned at two positions is by making
Represented for the radius R1 and R2 of example.Thus, the electrode and inwall 24 of precombustion chamber are arranged coaxially with each other.This is applied to from pre-
The longitudinal cross-section of the free end for the electrode 23 that the first end 20.1 of combustion room 20 starts and terminated in precombustion chamber 20.Precombustion chamber 20 has
Sharp ground is rotationally symmetrical on central axial line CL.
Rotated in addition, the specially inwall 24 of precombustion chamber 20 is arranged to from the end of electrode 23 with the first radius Re distance
Symmetrically bend, so as to be formed to the slightly spherical section 20.3 of precombustion chamber 20.Spherical section 20.3 is longitudinally oriented as inwall
The extension of 24 tangent line for being connected to spherical section 20.3.First radius Re is equal in longitudinal position on the top positioned at electrode 23
Put the radius R2 at place.
In this embodiment, precombustion chamber 20 includes tip segment 20.4, and the tip segment 20.4 is suitable for when mounted
Extend in the combustion chamber 40 of engine.Specifically, at least one aperture 18 of precombustion chamber 20 is disposed in the top of precombustion chamber 20
At end section 20.4, it is in fluid communication with being provided between the combustion chamber 40 of precombustion chamber 20 and engine.The tip segment is arranged
The extension of globulate section 20.3, the extension has the cross-sectional area smaller at radius R2 position than precombustion chamber 20,
This provides increased gas velocity and improved gas mixing.The true form of tip segment can according to circumstances change,
Here as example shows the cylindrical form with rounded ends.
The form of precombustion chamber 20 can also be described as thinking have first area and second area in a longitudinal direction.These
Region has varying cross-section area, thus perpendicular to central axial line CL cross-sectional area the free end positioned at electrode area
It is less than the cross-sectional area in the region that electrode 23 enters in precombustion chamber 20 in domain.This means the axis of centres from precombustion chamber 20
The radius that line CL is limited to the inner surface of precombustion chamber is smaller than radius at first end 20.1 in the region of electrode end.For example,
The cross-sectional area of precombustion chamber 20 can be tapered when being moved along central axial line CL from cap surface 16 towards the second end 20.2.
Pre-burning chamber component 14 includes being used to light the combustible fuel mixture in the piston-engined combustion chamber 40 of internal combustion
Ignition module 12.The ignition module 12 is provided with the pulsed plasma plug assembly 22 with least one electrode 23.This point
Fiery component can produce zooming voltage pulse, and the zooming voltage pulse forms multiple plasmas in precombustion chamber
Body streamer, without forming the traditional spark as described in reference picture 1.Wall surface 24 includes cap surface 16, and electrode 23
A part is extended in precombustion chamber 20 through cap surface 16.Advantageously, pulsed plasma plug assembly 22 and pre-burning chamber component 14
The cylinder head 10 of engine can be removably assembled to.Pulsed plasma plug assembly 22 is provided with insulator 21, so that extremely
Partially surround electrode 23.
As shown in Fig. 2 pulsed plasma plug assembly 22 is connected to voltage source 60, the voltage source 60 is to pulsed plasma
Plug assembly 22 is supplied as the energy of voltage pulse source.Pulsed plasma plug assembly 22 can be provided with control unit 62, should
The operation in the control voltage source 60 of control unit 62, and thus also control pulsed plasma plug assembly 22 operation.Control unit
62 and voltage source 60 be designed to produce voltage pulse quick application, as illustrated by Fig. 1 and Fig. 6.
Electrode 23 in the precombustion chamber 20 of pulsed plasma plug assembly 22 is extended at least partly into precombustion chamber 20, its
In produced by plasma streamer be used for light fuel.Control unit 62 is arranged to control pulsed plasma plug assembly 22
Operation so that occur in precombustion chamber 20 using plasma streamer carry out plasma pulse light.In addition, precombustion chamber 20
Inwall 24 be preferably used as counter-electrodes, so as to produce electric field between pulsed plasma plug assembly 22 and wall 24, work as voltage
The wall 24 is grounded when voltage is supplied in source 60 to pulsed plasma plug assembly 22.In other words, pulsed plasma plug assembly 22
Electrode 23 is used as anode, and the wall 24 of precombustion chamber 20 is used as negative electrode.Then in the He of electrode 23 of pulsed plasma plug assembly 22
Streamer is produced between the inwall 24 of precombustion chamber 20.This is ensured in precombustion chamber 20 at various positions all while lighting, so as to carry
Combustion stability in high precombustion chamber 20 and combustion chamber 40.
Precombustion chamber 20 is provided with the pipeline for the mixture of fuel gas or fuel and air to be introduced in precombustion chamber 20
25.Pipeline 25, which is arranged to, leads to precombustion chamber 20.Obviously, pipeline 25 is provided with valve member (although not figure 2 illustrates), from
And the gas flowing that will open into precombustion chamber 20 is opened or closed.In addition, pipeline 25 is arranged to be in fluid communication with fuels sources 70.
When power operation, combustible fuel mixture is lighted in precombustion chamber 20, and the fuel mixture then lighted leads to
Cross aperture 18 to be sent in combustion chamber 40, and herein light actual combustible fuel mixture.Burnt in combustion chamber 40
Fuel be preferably fuel gas.
Fig. 3 discloses another embodiment of the invention.Pre-burning chamber component 14 in Fig. 3 includes and institute in Fig. 1 and Fig. 2
The corresponding element of element shown, only precombustion chamber 20 is multi-form.In addition, in this embodiment, pre-burning chamber component 14
Including the pulsed plasma plug assembly 22 with electrode 23, central longitudinal axis CL of the electrode 23 along precombustion chamber 20 is from pre-
The first end 20.1 of combustion room extends certain distance into precombustion chamber 20.
The central longitudinal axis of precombustion chamber 20 in the embodiment at the second end along electrode 23 towards precombustion chamber 20
There is the cylindrical cross section perpendicular to axis CL on CL direction.For example, the equal cross-sections at two positions by
Radius R1 and R2 is represented.This is applied to top or end that electrode 23 is terminated at since the first end 20.1 of precombustion chamber 20
Longitudinal cross-section.Precombustion chamber 20 is advantageously rotationally symmetrical on central axial line CL.
Rotated in addition, the specially inwall 24 of precombustion chamber 20 is arranged to from the end of electrode 23 with the first radius Re distance
Symmetrically bend, so as to be formed to the slightly spherical section 20.3 of precombustion chamber 20.Spherical section 20.3 is longitudinally oriented as inwall
The extension of 24 tangent line for being connected to spherical section 20.3.In this embodiment, in the vertical of the top end positioned at electrode 23
It is equal to radius R2 and radius R1 to the first radius Re at position.
Moreover, in the embodiment, precombustion chamber 20 includes tip segment 20.4, the tip segment 20.4 is suitable for installing
When extend in the combustion chamber 40 of engine.Specifically, at least one aperture 18 of precombustion chamber 20 is disposed in precombustion chamber 20
At tip segment 20.4, it is in fluid communication with being provided between the combustion chamber 40 of precombustion chamber 20 and engine.The reality of the tip segment
Border shape can according to circumstances change, and here as example shows the cylindrical form with rounded ends.
Pre-burning chamber component 14 includes being used to light the combustible fuel mixture in the piston-engined combustion chamber 40 of internal combustion
Ignition module 12.The ignition module 12 is provided with the pulsed plasma plug assembly 22 with least one electrode 23.This point
Fiery component can produce zooming voltage pulse, and the zooming voltage pulse is in precombustion chamber in electrode and precombustion chamber
Multiple plasma streamers are formed between wall.Advantageously, pulsed plasma plug assembly 22 and pre-burning chamber component 14 can be more
It is assembled to the cylinder head 10 of engine with changing.Pulsed plasma plug assembly 22 is provided with insulator 21, so that at least in part
Electrode 23 is surrounded, as illustrated by reference picture 1 and/or Fig. 2.
Electrode 23 in the precombustion chamber 20 of pulsed plasma plug assembly 22 is extended at least partly into precombustion chamber 20, its
It is middle to carry out plasma pulse using plasma streamer and apply with by ignited fuel.Thus in pulsed plasma plug assembly 22
Streamer is produced between the wall 24 of precombustion chamber 20.Which ensure that all lighted simultaneously in precombustion chamber 20 at various positions, so that
Improve the combustion stability in precombustion chamber 20 and in combustion chamber 40.
Fig. 4 discloses another embodiment of the invention.Pre-burning chamber component 14 in Fig. 4 include with shown in Fig. 2
The corresponding element of element, only precombustion chamber 20 is different structure.As shown in Figure 4, precombustion chamber main body 30 is by two master units
31st, 32 i.e. end pieces 31 and master unit 32 is formed.End pieces include spherical section 20.3 and tip segment 20.4, and master unit 32
Include the precombustion chamber of wherein keeper electrode.Tip segment 20.4 and spherical section are separate units so that for example can with it is some
The tip segment of type is used together a type of spherical section, so as to support the modularization of the embodiment to implement.
Fig. 5 discloses another embodiment of the invention.Pre-burning chamber component 14 shown in Fig. 5 include with shown in Fig. 1
The corresponding element of element, only precombustion chamber 20 be different structure.If see in Figure 5, here, ignition module 12 is set
Body 40 is equipped with, electrode and fuel channel 25 are entered in combustion chamber by the body 40, and by the body 40, can
So that the component is releasably attached into first end 20.1 or precombustion chamber 20.This embodiment offers easily can exchange and tie up
The electrode repaiied.
Fig. 6 shows the actuation process for following the executable instruction according to an embodiment of the invention.In trunnion axis
Top dead centre (TDC) situation is shown on line, wherein performing triggering 74 in predetermined instant or starting the actuation process.Actual triggering is just
When can for example according to the operation environment set of engine top dead centre or relative to tdc position somewhat in advance or prolong
Late.Trigger action causes pulsed plasma plug assembly 106 continuously to apply energy and thus generation pulse 77 to electrode.If
Enough see, the trigger action is caused generates pulse train sequence 76 in an ignition process.In figure, exemplarily show
ON/OFF (1,0) state of triggering 74 and pulse 76 is gone out.Each pulse is controlled so as to holding with advantageously below 100ns
The continuous time.However, the actual duration of one or more of series impulse pulse can change.In addition, between pulse
Interval I can also change.The executable command of control unit 62 is included in the finger that several pulses are provided in an ignition process
Order.In this respect, once igniting refers to, will be directed at what is burnt in a cyclic process of cylinder in one or more stages
Charging is lighted.
Fig. 7 schematically shows internal combustion piston engine 100, and the engine 100 includes one or more Hes of cylinder 102
Cylinder head 104.The engine is provided with ignition module 106, and the ignition module 106 is configured to use pre-burning chamber component 14 will be interior
The combustible fuel mixture for firing the fuel gas in the combustion chamber of piston engine 100 is lighted.Pre-burning chamber component 14 has at least
One aperture 18 is to provide being in fluid communication between the precombustion chamber and the combustion chamber of engine 100.The pre-burning chamber component is provided with
Initiate the room space of igniting.The ignition module further comprises with least one electrode 23 connected with precombustion chamber space 15
Pulsed plasma plug assembly 22.
In this embodiment, pulsed plasma plug assembly 22 includes the plug 722 removedly assembled.The plug 722 is wrapped
Body 724 is included, plug 722 can be attached to by precombustion chamber 20 by the body 724.Body 722 is provided with cavity in its one end
726, the cavity 726, which is arranged in, leads to precombustion chamber space 15 when being installed in precombustion chamber 20.The body is advantageously provided with
External screw thread, the external screw thread is engaged with the internal thread of precombustion chamber 20, by can be so attached to by body and therefore by plug 722
Precombustion chamber.Plug 722 is additionally provided with electrode 23 and insulator 21 with support and at least partially around electrode 23.Electrode 23 and body
724 electric insulations, and be also electrically insulated with precombustion chamber.Body 724 is operated as the grounding electrode of the component.
Electrode 23 extends in the cavity 726 of body and is disposed therein centre axis.Cavity 726 is limited by the wall of cavity
Delimit, so that the cavity is the cylinder with circular cross section.The length of cavity 726 and the length of electrode 23 are substantially each other
It is equal.In other words, the electrode extends to the edge of cavity from the bottom of cavity.The cavity is formed at the sleeve of body tip
In shape part.Ignition module is suitable for producing multiple plasma streamers between the cylindrical wall of electrode and cavity 726.In figure
In 7 embodiment, the ignition module is suitable for producing multiple plasma streamers in the void space for reaching plug.Pulse etc.
Gas ions plug assembly produces and conveys the rapid increase acted on via plug cavity in precombustion chamber space, ultrashort high-tension pulse
Punching.Pulsed plasma plug assembly 22 is connected to voltage source 60, and the voltage source 60 is supplied as in pulsed plasma plug assembly
The energy of the voltage pulse source produced in 22.
In Fig. 7 embodiment, body 722 and electrode 23, which are arranged to, to be extended in precombustion chamber space 15, and this is beneficial
Lighted in the fuel air mixture improved in precombustion chamber 20.This be due to plasma streamer position be conducive to igniting.
According to an embodiment of the invention, the sleeve-like parts of the body 724 extended in precombustion chamber are provided with porous or perforated
Wall section 725.Which enhance the fluid communication between precombustion chamber space 15 and cavity 726, propagated so as to for example improve flare.
Ignition module 12 further comprises being arranged to the control unit to operate with Fig. 1 embodiment similar mode
62 and memory cell.Thus, the operation of the component and part are consistent with those mentioned above by reference to Fig. 1.
Fig. 8 shows ignition module 106, and the ignition module 106 is configured to use pre-burning chamber component 14 by internal combustion piston
The combustible fuel mixture of fuel gas in the combustion chamber of engine 100 is lighted, in Fig. 8 embodiment, except body
722 and electrode 23 be arranged to and extend to and flushed with the inner surface in precombustion chamber space 15 that (this is beneficial to improve corrosion resistance and right
Body 722 is cooled down) outside, the ignition module is similar with shown in Fig. 7 in other side.
The ignition module 12 further comprises being arranged to the control list to operate with Fig. 1 embodiment similar mode
Member 62 and memory cell.Thus, the operation of the component and part are consistent with those mentioned above by reference to Fig. 1.
Although here on being presently believed to be those contents of most preferred embodiment by way of example
Describe the present invention, it should be appreciated that, the invention is not restricted to disclosed embodiment, and it is intended to cover such as appended right
It is required that in the various combinations of feature of the invention that limit or modification and within the scope of the present invention it is some it is other should
With.Can relatively it be used with another embodiment on the details that any of the above embodiment is referred to, as long as this combination
It is technically feasible.
Claims (14)
1. a kind of ignition module, the ignition module is configured to mix the ignitable fuel in the piston-engined combustion chamber of internal combustion
Object point fires, and the ignition module includes the pre-burning chamber component (14) for being suitable for being attached in the opening of cylinder head (10), the precombustion chamber
Component has at least one aperture (18) to provide the company of the flowing between the precombustion chamber and the combustion chamber of the engine (100)
Logical, the ignition module further comprises：Pulsed plasma plug assembly with least one electrode, at least one electrode
Connected with the space of the precombustion chamber, and the pulsed plasma plug assembly is suitable for producing between at least two electrodes
Multiple plasma streamers；And control unit, the control unit is provided with executable instruction to activate the pulsed plasma
Plug assembly to produce pulse,
Characterized in that, described control unit (62) is provided with for being set in when activating the pulsed plasma plug assembly
The pulse information of the variable of the pulse train used in each ignition process, and described control unit is further provided with holding
Row instruction produces the pulse to activate the pulsed plasma plug assembly using the pulse information.
2. ignition module according to claim 1, it is characterised in that described control unit is suitable for according at one or many
One or more operating parameters of the engine obtained in ignition process before individual form pulse information.
3. ignition module according to claim 1, it is characterised in that described control unit be provided with executable instruction so that
The pulsed plasma plug assembly is moved, so as to produce the pulse that the duration is respectively less than 100ns.
4. ignition module according to claim 1, it is characterised in that the number of the pulse is igniting 2 to 40 every time
Pulse.
5. ignition module according to claim 4, it is characterised in that the number of the pulse is less than 30 for igniting every time
Pulse.
6. ignition module according to claim 4, it is characterised in that the number of the pulse is less than 20 for igniting every time
Pulse.
7. ignition module according to claim 1, it is characterised in that the pulse information is included for the engine
The mapping of the different pulse number mesh value of predetermined operational parameters.
8. ignition module according to claim 1, it is characterised in that the pre-burning chamber component (14) is provided with for that will fire
Material is fed to controllable gaseous fuel inlet port (26) in the space of the precombustion chamber, and described control unit be provided with it is executable
Instruction is to control the fuel charge, with the offer lean fuel mixture in the combustion chamber of the engine and in the precombustion chamber
Middle offer lean fuel mixture.
9. a kind of lighted the combustible fuel mixture in the piston-engined combustion chamber of internal combustion by plasma pulse igniting
Method, this method comprises the following steps：It is being initiated by pre-burning chamber component (14) with precombustion chamber space, by internal combustion piston
The step of combustible fuel mixture in the combustion chamber of engine is lighted；It is used for activation pulse plasma plug assembly with producing
The step of producing the pulse of multiple plasma streamers between at least two electrodes, in the method, the pulse plasma
Body plug assembly is activated using a string of controllable pulses and produces multiple pulses.
10. method according to claim 9, it is characterised in that in a string of controllable pulses, according to the engine
One or more operating parameters control the number of pulse.
11. method according to claim 10, it is characterised in that the number of pulse is less than 40 pulses of igniting every time.
12. method according to claim 10, it is characterised in that the number of pulse is less than 30 pulses of igniting every time.
13. method according to claim 10, it is characterised in that the number of pulse is less than 20 pulses of igniting every time.
14. method according to claim 10, it is characterised in that from including the predetermined operational parameters for the engine
Different pulse number mesh value mapping obtain pulse number.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FI2014/050852 WO2016075357A1 (en) | 2014-11-12 | 2014-11-12 | An ignition assembly and a method of igniting a combustible fuel mixture in a combustion chamber of an internal combustion piston engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107002625A true CN107002625A (en) | 2017-08-01 |
Family
ID=52002984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480083303.2A Pending CN107002625A (en) | 2014-11-12 | 2014-11-12 | Ignition module and the method for lighting the combustible fuel mixture in the piston-engined combustion chamber of internal combustion |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3234348A1 (en) |
| KR (1) | KR101932367B1 (en) |
| CN (1) | CN107002625A (en) |
| WO (1) | WO2016075357A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022240A (en) * | 2018-10-10 | 2020-04-17 | 罗森伯格高频技术有限公司 | Ignition system with a prechamber and a spark plug ignition spark amplified by a high-frequency plasma, and corresponding method |
| CN112096554A (en) * | 2020-08-19 | 2020-12-18 | 清华大学 | Engine low-temperature plasma ignition method and system |
| CN112177764A (en) * | 2020-10-06 | 2021-01-05 | 山东交通学院 | Shock wave multistage reflection strong premixing precombustion chamber structure |
| CN112211714A (en) * | 2020-11-27 | 2021-01-12 | 山东交通学院 | Shock wave combustion-supporting precombustion chamber structure of gas engine |
| CN112567120A (en) * | 2018-08-10 | 2021-03-26 | 瓦锡兰芬兰有限公司 | Pre-combustion chamber arrangement |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10018104B2 (en) | 2016-11-14 | 2018-07-10 | GM Global Technology Operations LLC | Combustion ignition device for an internal combustion engine |
| US20200182217A1 (en) * | 2018-12-10 | 2020-06-11 | GM Global Technology Operations LLC | Combustion ignition devices for an internal combustion engine |
| DE102022104298B3 (en) | 2022-02-23 | 2023-05-25 | Jan Leberwurst | Ignition unit and internal combustion engine with ignition unit |
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| US20110100322A1 (en) * | 2008-07-22 | 2011-05-05 | Friedrich Gruber | Device for igniting a fuel/air mixture |
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| FR2886689B1 (en) | 2005-06-02 | 2010-12-17 | Peugeot Citroen Automobiles Sa | SYSTEM AND METHOD FOR IGNITING INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE |
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| US20090107437A1 (en) | 2007-10-31 | 2009-04-30 | Caterpillar Inc. | RF igniter having integral pre-combustion chamber |
| JP5119879B2 (en) * | 2007-11-16 | 2013-01-16 | 日産自動車株式会社 | Non-equilibrium plasma discharge control device and non-equilibrium plasma discharge control method for internal combustion engine |
| JP5477253B2 (en) * | 2010-10-18 | 2014-04-23 | 株式会社デンソー | Internal combustion engine ignition device |
| US20140109886A1 (en) | 2012-10-22 | 2014-04-24 | Transient Plasma Systems, Inc. | Pulsed power systems and methods |
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2014
- 2014-11-12 EP EP14805958.7A patent/EP3234348A1/en not_active Withdrawn
- 2014-11-12 WO PCT/FI2014/050852 patent/WO2016075357A1/en active Application Filing
- 2014-11-12 CN CN201480083303.2A patent/CN107002625A/en active Pending
- 2014-11-12 KR KR1020177015307A patent/KR101932367B1/en active IP Right Grant
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| US4034720A (en) * | 1974-03-01 | 1977-07-12 | Nippon Soken, Inc. | Internal combustion engine |
| JPS5453707A (en) * | 1977-10-05 | 1979-04-27 | Nippon Soken Inc | Otto-cycle engine running system |
| US20040129241A1 (en) * | 2003-01-06 | 2004-07-08 | Freen Paul Douglas | System and method for generating and sustaining a corona electric discharge for igniting a combustible gaseous mixture |
| EP2020503A2 (en) * | 2007-08-02 | 2009-02-04 | Nissan Motor Co., Ltd. | Non-equilibrium plasma discharge type ignition device |
| US20110100322A1 (en) * | 2008-07-22 | 2011-05-05 | Friedrich Gruber | Device for igniting a fuel/air mixture |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112567120A (en) * | 2018-08-10 | 2021-03-26 | 瓦锡兰芬兰有限公司 | Pre-combustion chamber arrangement |
| CN111022240A (en) * | 2018-10-10 | 2020-04-17 | 罗森伯格高频技术有限公司 | Ignition system with a prechamber and a spark plug ignition spark amplified by a high-frequency plasma, and corresponding method |
| CN111022240B (en) * | 2018-10-10 | 2022-02-18 | 罗森伯格高频技术有限公司 | Ignition system with a prechamber and a spark plug ignition spark amplified by a high-frequency plasma, and corresponding method |
| CN112096554A (en) * | 2020-08-19 | 2020-12-18 | 清华大学 | Engine low-temperature plasma ignition method and system |
| CN112177764A (en) * | 2020-10-06 | 2021-01-05 | 山东交通学院 | Shock wave multistage reflection strong premixing precombustion chamber structure |
| CN112211714A (en) * | 2020-11-27 | 2021-01-12 | 山东交通学院 | Shock wave combustion-supporting precombustion chamber structure of gas engine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016075357A1 (en) | 2016-05-19 |
| KR20170080676A (en) | 2017-07-10 |
| EP3234348A1 (en) | 2017-10-25 |
| KR101932367B1 (en) | 2018-12-24 |
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Application publication date: 20170801 |