WO2016021574A2 - インジェクタユニット、及び点火プラグ - Google Patents
インジェクタユニット、及び点火プラグ Download PDFInfo
- Publication number
- WO2016021574A2 WO2016021574A2 PCT/JP2015/072031 JP2015072031W WO2016021574A2 WO 2016021574 A2 WO2016021574 A2 WO 2016021574A2 JP 2015072031 W JP2015072031 W JP 2015072031W WO 2016021574 A2 WO2016021574 A2 WO 2016021574A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- igniter
- injector
- discharge
- center electrode
- section
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/06—Fuel-injectors combined or associated with other devices the devices being sparking plugs
-
- 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
-
- 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
- F02P3/00—Other installations
- F02P3/01—Electric spark ignition installations without subsequent energy storage, i.e. energy supplied by an electrical oscillator
-
- 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
-
- 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
- F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
- F02P15/006—Ignition installations combined with other systems, e.g. fuel injection
-
- 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
- H01T13/40—Sparking plugs structurally combined with other devices
Definitions
- the present invention relates to an injector unit.
- the present invention relates to an injector unit for making it possible to use gaseous fuel such as compressed natural gas (CNG) in an existing diesel engine.
- gaseous fuel such as compressed natural gas (CNG)
- CNG compressed natural gas
- the present invention also relates to a spark plug used in such an injector unit.
- Retrofit technology improves engine exhaust performance by changing or adding parts to an existing engine. For example, it is recommended by the United States Environmental Protection Agency (EPA) (Non-Patent Document 1). This retrofit technology is also called aftermarket.
- EPA United States Environmental Protection Agency
- Non-patent Document 2 since the ignition temperature of CNG is higher than that of light oil, it cannot be ignited by simply replacing the injector. Therefore, it is conceivable to use light oil as a pilot or to use ignition means such as a spark plug (Non-patent Document 2).
- Patent Document 1 is an example of the former, and Patent Documents 2 and 3 are examples of the latter.
- Patent Document 1 when the configuration of Patent Document 1 is adopted, it is necessary to mount both a light oil tank and a natural gas tank on the automobile, which increases the weight of the automobile and increases the maintenance burden. Moreover, it is necessary to consider both light oil supply and natural gas supply, which is complicated for the driver.
- Patent Document 3 When the configuration described in Patent Document 3 is adopted, there is no need to provide a hole in the manifold, but the structure is complicated and expensive, so it is not suitable for the retrofit technique.
- the present invention has been made in view of the above points.
- the injector unit of the present invention includes an injector, an igniter that boosts a microwave by a resonance structure and discharges it, and a casing that houses the injector and the igniter.
- the igniter has a discharge part, a first part for transmitting the input microwave, a second part for capacitive coupling to perform impedance matching between the microwave and the igniter, and a capacitively coupled microwave to the discharge part.
- a third portion. The igniter is bent at the boundary between the first part and the second part, the boundary between the second part and the third part, or the first part.
- gas fuel such as CNG can be used in an existing diesel engine.
- FIG. 1 is a diagram showing a configuration of an injector unit 1.
- FIG. (A) is a partially sectional front view
- (b) is a partially sectional side view
- (c) is a partially sectional rear view
- (d) is a plan view
- (e) is a bottom view.
- 2 is a diagram showing a configuration of an igniter 3.
- FIG. (A) is a front view
- (b) is a cross-sectional front view. This is an equivalent circuit of the igniter 3. It is a figure which shows the other structural example of the injector unit. It is a figure which shows the other structural example of the injector unit. It is a figure which shows the other structural example of the injector unit. It is a figure which shows the other structural example of the injector unit.
- FIG. 1 is a diagram showing the configuration of the injector unit 1.
- A is a partially sectional front view
- (b) is a partially sectional side view
- (c) is a partially sectional rear view
- (d) is a plan view
- (e) is a bottom view.
- the injector unit 1 includes two CNG injectors 2 and 2 for injecting CNG, which is a kind of gaseous fuel, an igniter 3, and a casing 4 for storing them.
- the injector 2 is a solenoid injector that is widely used as a port injection injector.
- the injector 2 is provided with a rear end portion 2a in which a filter or the like is accommodated, a central portion 2b in which a solenoid or the like for driving the needle valve is accommodated, a needle valve, a nozzle, or the like. It has the front-end
- the diameter of the center part 2b is larger than the diameter of the front-end
- the igniter 3 is a kind of ignition means for igniting CNG.
- the igniter 3 is a kind of spark plug that discharges by generating a high voltage by a boosting method using a resonator. By this discharge, electrons are emitted from the gas molecules in the vicinity thereof to generate non-equilibrium plasma, thereby igniting the fuel.
- CNG has a higher ignition temperature than light oil, and compression self-ignition is difficult. Therefore, in the injector unit 1, the igniter 3 is used for ignition assist.
- an igniter 3 includes an input portion 3a to which a microwave is input, and a coupling portion 3b in which capacitive coupling for the purpose of impedance matching between the microwave and the igniter 3 is performed. And an amplification / discharge portion 3c for performing voltage amplification and discharge. Then, referring to FIG. 1B, it is bent at the boundary between the input portion 3a and the coupling portion 3b and at the boundary between the coupling portion 3b and the amplification / discharge portion 3c.
- the igniter 3 accommodates internal members by a case 31 made of conductive metal. Details of the configuration of the igniter 3 will be described later.
- the casing 4 is a columnar member having a plurality of cylindrical portions, and is divided into a rear end portion 4a, a central portion 4b, and a front end portion 4c as shown in FIG. The diameter of each part becomes small in order of 4c, 4b, 4a.
- the two injectors 2 are arranged point-symmetrically with respect to the center of the casing 4, and the igniter 3 is in a direction orthogonal to the line segment connecting the injectors 2A and 2B. Placed in.
- the injector unit 1 is inserted together with the casing 4 into a cylinder head of a diesel engine which is a kind of compression ignition type engine. Due to the heat dissipation of the CNG injector 2 and the igniter 3, the casing 4 is made of a metal having high thermal conductivity. Accordingly, since the injector 2 and the igniter 3 are actually hidden in the casing 4, they cannot be seen when the injector unit 1 is viewed from the front. However, for convenience of explanation, the casing 4 is illustrated as being transparent.
- the rear end 2a and the central portion 2b of the injector 2 are disposed at the rear end 4a of the casing 4, and the front end 2c is disposed at the central portion 4b.
- the input portion 3a is disposed at the rear end portion 4a of the casing 4
- the coupling portion 3b is disposed across the rear end portion 4a and the central portion 4b
- the amplification / discharge portion 3c is disposed at the central portion 4b. Be placed.
- the diameter of the central portion 2b of the injector 2 is larger than that of the tip portion 2c. Therefore, if the igniter 3 has a straight structure like a normal igniter, the input portion 3a of the igniter 3 and the central portion 2b of the injector interfere with each other. On the other hand, since the igniter 3 is bent, the input portion 3a and the central portion 2b do not interfere with each other.
- the igniter 3 has a straight structure, the amplification / discharge part 3c cannot be arranged at the central part 4b of the casing, and must be arranged at the rear end part 4a. As a result, since discharge occurs behind the injection port of the injector 2, it is difficult to ignite the fuel.
- the two injectors 2 are shifted from the center line (line passing through the center of the casing 4) (for example, if the two injectors 2 are shifted to the left side of the paper in FIG. 1B), Even if the igniter 3 does not have a bending structure, it is possible to dispose the injector 2 and the igniter 3 so that the leading ends of both the injector 2 and the igniter 3 are located in the central portion 4b of the casing.
- the two injectors 2 are preferably arranged symmetrically with respect to the center of the casing 4. Accordingly, the bending structure of the igniter 3 contributes to an improvement in the injection performance of the injector 2.
- the input portion 3a is provided with an input terminal 32 for inputting a microwave generated by an external oscillation circuit, and a first center electrode 33a.
- the first center electrode 33a transmits microwaves.
- a dielectric 39 a such as ceramic is provided between the first center electrode 33 a and the case 31.
- 1st center electrode 33b and 2nd center electrode 34 are provided in joint part 3b.
- This coupling portion 3b is provided exclusively for the purpose of impedance matching between the oscillation circuit and the igniter 3.
- the first center electrode 33b is connected to the first center electrode 33a and is bent at the connection portion.
- the second center electrode 34 has a cylindrical configuration having a bottom portion on the amplification / discharge portion 3c side, and the cylindrical portion surrounds the first center electrode 33b.
- the cylindrical inner walls of the rod-shaped first center electrode 33b and the cylindrical second center electrode 34 are opposed to each other, and the microwave from the first center electrode 33 is transmitted to the second center electrode 34 by capacitive coupling at the opposed portion. Is done.
- the cylindrical portion of the second center electrode 34 is filled with a dielectric 39 b such as ceramic, and a dielectric 39 a such as ceramic is also provided between the second center electrode 34 and the case 31.
- the third center electrode 35 and the discharge electrode 36 are provided in the amplification / discharge part 3c.
- the third center electrode 35 is connected to the second center electrode 34, and the microwave of the second center electrode 34 is transmitted.
- the discharge electrode 36 is attached to the tip of the third center electrode 35.
- the third center electrode 35 has a coil component, and the microwave potential increases as it passes through the third center electrode 35. As a result, a high voltage of several tens of KV is generated between the discharge electrode 36 and the case 31, and a discharge occurs between the discharge electrode 36 and the case 31.
- FIG. 3 is a diagram showing an equivalent circuit of the igniter 3.
- a microwave (voltage V1, frequency 2.45 GHz) input from an external oscillation circuit (MW) is connected to a resonance circuit including a capacitor C3, a reactance L, and a capacitor C2 via a capacitor C1.
- a discharge unit is provided in parallel with the capacitor C3.
- C1 corresponds to the coupling capacitance, and mainly the positional relationship between the second center electrode 34 and the first center electrode 33 (distance between the electrodes and the area facing each other) and the material filled between the electrodes (in this example, It is determined by the ceramic structure dielectric 39b).
- the first center electrode 33 may be configured to be movable in the axial direction in order to easily adjust the impedance.
- the capacitance C2 is a grounded capacitance formed by the second center electrode 34 and the case 31, and is determined by the distance between the second center electrode 34 and the case 31, the facing area, and the dielectric constant of the dielectric 39c.
- the case 31 is made of a conductive metal and functions as a ground electrode.
- the reactance L corresponds to the coil component of the third center electrode 35.
- the capacity C3 is a discharge capacity formed by the third center electrode 35, the discharge electrode 36, and the case 31. This is because (1) the shape and size of the discharge electrode 36 and the distance between the case 31, (2) the distance between the third center electrode 35 and the case 31, and (3) between the third center electrode 35 and the case 31. It is determined by the gap (air layer) 37 provided, the thickness of the dielectric 39d, and the like. If C2 >> C3, the potential difference between both ends of the capacitor C3 can be made sufficiently larger than V1, and as a result, the discharge electrode 36 can be set to a high potential. Furthermore, since C3 can be reduced, the area of the capacitor can be reduced.
- the capacitance C3 is substantially determined by the portion of the third center electrode 35 and the case 31 that face each other across the dielectric 39d. In other words, the capacitance C3 can be adjusted by changing the length of the gap (air layer) 37 in the axial direction.
- the coupling capacitance C1 When it can be considered that the coupling capacitance C1 is sufficiently small, the capacitance C3, the reactance L, and the capacitance C2 form a series resonance circuit, and the resonance frequency f can be expressed by Equation 1.
- the igniter 3 is designed so that the discharge capacity C3, the coil reactance L, and the ground capacity C2 satisfy the relationship of Formula 1.
- the igniter 3 generates a voltage Vc3 higher than the power supply voltage (the microwave voltage V1 input to the igniter 3) by a boosting method using a resonator. As a result, discharge occurs between the discharge electrode 36 and the ground electrode (case 31). When the discharge voltage exceeds the breakdown voltage of the gas molecules in the vicinity, electrons are emitted from the gas molecules, non-equilibrium plasma is generated, and the fuel is ignited.
- the igniter 3 is advantageous for downsizing.
- the igniter of the present invention is superior to a conventional igniter having a resonance structure (for example, Patent Document 4).
- the igniter 3 has a bent structure, the igniter can be inserted into a narrow space like the injector unit 1.
- the igniter 3 is bent at the boundary between the input portion 3a and the coupling portion 3b and at the boundary between the coupling portion 3b and the amplification / discharge portion 3c. If it is configured to be bent at the coupling portion 3b, the distribution of the magnitude of capacitive coupling generated between the first center electrode 33 and the second center electrode 34 is not targeted, and as a result, the discharge generated from the discharge electrode 56 is not generated. Since it has directivity, it is not preferable. In addition, bending the second center electrode 34, which is a cylindrical member, is also difficult in terms of manufacturing.
- first center electrode 33 and the second center electrode 34 do not face each other at the boundary between the input portion 3a and the coupling portion 3b, the first center electrode 33 and the second center electrode can be bent even at this position. 34 does not significantly affect the magnitude of the capacitive coupling that occurs between them. Therefore, since the design value of the already designed igniter can be utilized, the man-hour for electrical design can be reduced.
- the bent portion of the igniter 3 has a square shape, but may have a structure bent in an R shape (slowly).
- An igniter 3 in which only one portion is bent may be used as shown in FIG. According to this configuration, the discharge point of the igniter can be brought close to the jet of the injector.
- the igniter 3 can be realized by bending the boundary portion between the input portion 3a and the coupling portion 3b and not bending the boundary portion between the coupling portion 3b and the amplification / discharge portion 3c.
- the tip of the injector and igniter can be arranged at the tip 4c of the casing 4, and the injection port of the injector and the discharge part of the igniter can be brought close to the combustion chamber.
- this igniter 3 is realizable by extending the length of the part which does not oppose the 2nd center electrode 34 among the 1st center electrodes 33b.
- an igniter 3 in which the length of the coupling portion 3b is increased and only one portion is bent may be used. According to this configuration, the injection port of the injector can be brought close to the combustion chamber, and the discharge location of the igniter can be brought close to the jet flow of the injector.
- the igniter of the present invention can be bent and its length can be changed, it can be easily adapted to various cylinder heads.
- the injector unit 1 is used for retrofit, it is necessary to cope with various types of diesel engines (cylinder heads), but it is complicated to individually design an igniter for each engine.
- the igniter of the present invention since the bending or length adjustment is performed at a location that does not affect the electrical characteristics, the design of igniters having various shapes can be performed without significantly increasing the number of electrical design steps. Is possible. As a result, the development cost can be reduced, and thus the cost of the product can be reduced, which is beneficial to the purchaser.
- FIG. 5 A form as shown in FIG. 5 is also conceivable.
- (A) is a partially sectional front view
- (b) is a partially sectional side view
- (c) is a partially sectional rear view
- (d) is a plan view
- (e) is a bottom view.
- the distal end portion (amplification / discharge portion 3 c) of the igniter 3 is displaced from the central axis of the casing 4.
- the distal end portion of the igniter 3 is on the central axis of the casing 4. It is in.
- the igniter 3 has a straight structure like a normal igniter, the input portion 3a of the igniter 3 and the central portion 2b of the injector interfere with each other. .
- the tip of the igniter 3 can be disposed on the central axis of the casing without interfering with the injector 2. That is, since the discharge by the igniter 3 is performed at the center of the casing, it contributes to the improvement of the ignition characteristics of the fuel.
- FIG. 6 A form as shown in FIG. 6 is also conceivable. In this embodiment, two igniters 3 are used.
- FIG. (A) of the figure shows an example in which the tip portion (amplification / discharge portion 3 c) of the igniter 3 is arranged in the central portion 4 b of the casing 4.
- discharge by the igniter 3 can be performed near the injection port of the injector 2.
- FIG. 5B shows an example in which the tip of the igniter 3 is exposed from the tip 4c of the casing 4 and protrudes into the combustion chamber of the engine. Thereby, since the discharge by the igniter 3 is performed, the ignition characteristic of the fuel can be improved.
- (C) shows that one of the two igniters 3 is exposed from the tip 4c of the casing 4, while the other is not exposed, and the tip is arranged near the injection port of the injector 2.
- the igniter 3 in the vicinity of the injection port of the injector 2 is discharged, and seed plasma is generated by injecting fuel in this state.
- the seed plasma is expanded by discharging the igniter 3 exposed from the casing 4. Thereby, the ignition characteristic of fuel can be improved.
- the igniter 3 has a bent configuration. In the case of a straight structure like a normal igniter, these arrangements are impossible. That is, by using the igniter 3 having a bent structure, the ignition characteristics of the fuel can be improved.
Abstract
Description
図1は、インジェクタユニット1の構成を示す図である。(a)は一部断面の正面図、(b)は一部断面の側面図、(c)は一部断面の背面図、(d)は平面図、(e)は底面図である。同図に示すように、インジェクタユニット1は、気体燃料の一種であるCNGを噴射する2個のCNGインジェクタ2、2と、イグナイタ3と、これらを収納するケーシング4からなる。
図4に示すような形態も考えられる。
図5に示すような形態も考えられる。(a)は一部断面の正面図、(b)は一部断面の側面図、(c)は一部断面の背面図、(d)は平面図、(e)は底面図である。
図6に示すような形態も考えられる。本実施形態では、イグナイタ3を2つ用いた構成としている。
2 インジェクタ
3 イグナイタ
3a 入力部分
3b 結合部分
3c 増幅/放電部分
31 ケース(接地電極)
32 マイクロ波入力端子
33 第1中心電極
34 第2中心電極
35 第3中心電極
36 放電電極
37 空隙
39 誘電体
4 ケーシング
Claims (2)
- インジェクタと、
共振構造によりマイクロ波を昇圧し、放電を行うイグナイタと、
インジェクタ及びイグナイタを収納するケーシングを備え、
イグナイタは、
放電部と、
入力されたマイクロ波を伝送する第1部分と、
マイクロ波と該イグナイタとのインピーダンス整合を行うために容量結合を行う第2部分と、
容量結合されたマイクロ波を放電部に伝送する第3部分を有し、
該イグナイタは、第1部分と第2部分の境界、第2部分と第3部分の境界、又は第1部分内において屈曲していることを特徴とするインジェクタユニット。 - 放電部と、
入力されたマイクロ波を伝送する第1部分と、
マイクロ波と該イグナイタとのインピーダンス整合を行うために容量結合を行う第2部分と、
容量結合されたマイクロ波を放電部に伝送する第3部分を有し、
該イグナイタは、第1部分と第2部分の境界、第2部分と第3部分の境界、又は第1部分内において屈曲していることを特徴とするイグナイタ。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15829019.7A EP3179091A4 (en) | 2014-08-04 | 2015-08-04 | Injector unit, and spark plug |
JP2016540235A JP6620748B2 (ja) | 2014-08-04 | 2015-08-04 | インジェクタユニット、及び点火プラグ |
US15/501,549 US20170241390A1 (en) | 2014-08-04 | 2015-08-04 | Injector unit and spark plug |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2014-159101 | 2014-08-04 | ||
JP2014159101 | 2014-08-04 | ||
JP2014-160899 | 2014-08-06 | ||
JP2014160899 | 2014-08-06 |
Publications (2)
Publication Number | Publication Date |
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WO2016021574A2 true WO2016021574A2 (ja) | 2016-02-11 |
WO2016021574A3 WO2016021574A3 (ja) | 2016-03-31 |
Family
ID=55264732
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2015/072031 WO2016021574A2 (ja) | 2014-08-04 | 2015-08-04 | インジェクタユニット、及び点火プラグ |
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US (1) | US20170241390A1 (ja) |
EP (1) | EP3179091A4 (ja) |
JP (1) | JP6620748B2 (ja) |
WO (1) | WO2016021574A2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2015182774A1 (ja) * | 2014-05-29 | 2015-12-03 | イマジニアリング株式会社 | 点火装置内蔵インジェクタ |
JPWO2016027897A1 (ja) * | 2014-08-22 | 2017-07-06 | イマジニアリング株式会社 | 点火装置一体型インジェクタ、内燃機関、ガスバーナー、及び点火装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4561406A (en) * | 1984-05-25 | 1985-12-31 | Combustion Electromagnetics, Inc. | Winged reentrant electromagnetic combustion chamber |
JP2006120649A (ja) * | 2000-10-03 | 2006-05-11 | Nippon Soken Inc | スパークプラグ及びそれを用いた点火装置 |
US6712035B2 (en) * | 2002-03-26 | 2004-03-30 | General Motors Corporation | Diesel injection igniter and method |
JP4489756B2 (ja) * | 2003-01-22 | 2010-06-23 | ヴァスト・パワー・システムズ・インコーポレーテッド | エネルギー変換システム、エネルギー伝達システム、および熱伝達を制御する方法 |
JP2004257248A (ja) * | 2003-02-24 | 2004-09-16 | Hitachi Ltd | 内燃機関用点火装置 |
JP2006140072A (ja) * | 2004-11-15 | 2006-06-01 | Hitachi Ltd | 内燃機関の火花点火装置及び当該火花点火装置を備えた内燃機関 |
JP4876217B2 (ja) * | 2005-09-20 | 2012-02-15 | イマジニアリング株式会社 | 点火装置、内燃機関 |
EP2180176B1 (en) * | 2007-07-12 | 2016-12-14 | Imagineering, Inc. | Ignition or plasma generation device |
JP5152653B2 (ja) * | 2008-05-20 | 2013-02-27 | 株式会社エーイーティー | 火花放電点火方式とマイクロ波プラズマ点火方式を併用する点火装置 |
US8976504B2 (en) * | 2010-09-07 | 2015-03-10 | Ngk Spark Plug Co., Ltd. | Ignition system and spark plug |
WO2012061397A2 (en) * | 2010-11-01 | 2012-05-10 | Mahle Powertrain, Llc | Turbulent jet ignition pre-chamber combustion system for spark ignition engines |
US8907552B2 (en) * | 2011-11-18 | 2014-12-09 | Ngk Spark Plug Co., Ltd. | High-frequency plasma spark plug |
JP6739348B2 (ja) * | 2014-11-24 | 2020-08-12 | イマジニアリング株式会社 | 点火ユニット、点火システム、及び内燃機関 |
-
2015
- 2015-08-04 JP JP2016540235A patent/JP6620748B2/ja not_active Expired - Fee Related
- 2015-08-04 US US15/501,549 patent/US20170241390A1/en not_active Abandoned
- 2015-08-04 EP EP15829019.7A patent/EP3179091A4/en not_active Withdrawn
- 2015-08-04 WO PCT/JP2015/072031 patent/WO2016021574A2/ja active Application Filing
Also Published As
Publication number | Publication date |
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JPWO2016021574A1 (ja) | 2017-06-15 |
JP6620748B2 (ja) | 2019-12-18 |
WO2016021574A3 (ja) | 2016-03-31 |
EP3179091A2 (en) | 2017-06-14 |
US20170241390A1 (en) | 2017-08-24 |
EP3179091A4 (en) | 2017-06-21 |
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