JP6216028B2 - 燃料直噴式内燃機関の筒内圧検出装置 - Google Patents
燃料直噴式内燃機関の筒内圧検出装置 Download PDFInfo
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- JP6216028B2 JP6216028B2 JP2016234284A JP2016234284A JP6216028B2 JP 6216028 B2 JP6216028 B2 JP 6216028B2 JP 2016234284 A JP2016234284 A JP 2016234284A JP 2016234284 A JP2016234284 A JP 2016234284A JP 6216028 B2 JP6216028 B2 JP 6216028B2
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- injector
- fuel injection
- pressure detection
- internal combustion
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- 238000001514 detection method Methods 0.000 title claims description 110
- 239000000446 fuel Substances 0.000 title claims description 77
- 238000002485 combustion reaction Methods 0.000 title claims description 73
- 238000002347 injection Methods 0.000 title claims description 62
- 239000007924 injection Substances 0.000 title claims description 62
- 230000008054 signal transmission Effects 0.000 claims description 57
- 238000003466 welding Methods 0.000 claims description 22
- 230000002093 peripheral effect Effects 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 12
- 239000000567 combustion gas Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 230000002411 adverse Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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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
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
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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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B23/104—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder the injector being placed on a side position of the cylinder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure
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- 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
- F02M57/005—Fuel-injectors combined or associated with other devices the devices being sensors
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/08—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically
- G01L23/10—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically by pressure-sensitive members of the piezoelectric type
-
- 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
- F02B75/00—Other engines
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/24—Fuel-injection apparatus with sensors
- F02M2200/247—Pressure sensors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Measuring Fluid Pressure (AREA)
- Fuel-Injection Apparatus (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Description
12d インジェクタ取付孔
14 燃焼室
20 インジェクタ
31e 溶接代
31f 出力信号伝達部材収納溝
31g 出力信号伝達部材収納孔
33 弁座部材
33b 燃料噴射孔
34 圧力検出素子
35 カラー構造体
35a 環状溝
36 シール部材
48 出力信号伝達部材
53 ガスケット
A 締まり嵌め
B 隙間嵌め
Claims (15)
- 燃料直噴式内燃機関の燃焼室(14)に燃料噴射孔(33b)から燃料を噴射するインジェクタ(20)の先端部に、前記燃料噴射孔(33b)を囲むとともに先端部が前記インジェクタ(20)の軸線方向に圧縮変形可能な圧力検出素子(34)を設け、前記圧力検出素子(34)の先端面および外周面を前記燃焼室(14)に臨ませたことを特徴とする燃料直噴式内燃機関の筒内圧検出装置。
- 前記インジェクタ(20)の外周と、シリンダヘッド(12)のインジェクタ取付孔(12d)の内周との間にて燃焼ガスをシールするシール部材(36)を、前記圧力検出素子(34)よりも基端側で前記インジェクタ(20)に設け、前記圧力検出素子(34)から延びる出力信号伝達部材(48)を前記インジェクタ(20)の外面と前記シール部材(36)の内面との間に配置することを特徴とする、請求項1に記載の燃料直噴式内燃機関の筒内圧検出装置。
- 前記圧力検出素子(34)よりも基端側で、前記インジェクタ(20)に前記シール部材(36)を支持するカラー構造体(35)を設け、前記カラー構造体(35)は前記シール部材(36)と前記出力信号伝達部材(48)との間に位置することを特徴とする、請求項2に記載の燃料直噴式内燃機関の筒内圧検出装置。
- 前記カラー構造体(35)の外径は、前記圧力検出素子(34)の外径よりも大きいことを特徴とする、請求項3に記載の燃料直噴式内燃機関の筒内圧検出装置。
- 前記インジェクタ(20)の外面に、前記出力信号伝達部材(48)を配置する出力信号伝達部材収納溝(31f)を形成することを特徴とする、請求項3または請求項4に記載の燃料直噴式内燃機関の筒内圧検出装置。
- 前記インジェクタ(20)の外周と、シリンダヘッド(12)のインジェクタ取付孔(12d)の内周との間にて燃焼ガスをシールするシール部材(36)を、前記圧力検出素子(34)よりも基端側で前記インジェクタ(20)に形成した環状溝(35a)に設け、前記圧力検出素子(34)から延びる前記出力信号伝達部材(48)を前記インジェクタ(20)の内部に配置することを特徴とする、請求項1に記載の燃料直噴式内燃機関の筒内圧検出装置。
- 前記インジェクタ(20)の内部に、前記出力信号伝達部材(48)を配置する出力信号伝達部材収納孔(31g)を形成することを特徴とする、請求項6に記載の燃料直噴式内燃機関の筒内圧検出装置。
- 前記インジェクタ(20)の先端部に、前記圧力検出素子(34)を一体に溶接する溶接代(31e)を設けることを特徴とする、請求項1〜請求項7の何れか1項に記載の燃料直噴式内燃機関の筒内圧検出装置。
- 前記溶接代(31e)は、前記インジェクタ(20)の先端部の内周に配置されて前記燃料噴射孔(33b)が形成された弁座部材(33)と前記圧力検出素子(34)との間に挟まれており、かつ前記弁座部材(33)よりも溶接性の高い材料で構成されることを特徴とする、請求項8に記載の燃料直噴式内燃機関の筒内圧検出装置。
- 前記インジェクタ(20)の先端部に、前記圧力検出素子(34)の基端部を締まり嵌め(A)するとともに、前記圧力検出素子(34)の先端部を隙間嵌め(B)することを特徴とする、請求項1〜請求項9の何れか1項に記載の燃料直噴式内燃機関の筒内圧検出装置。
- 前記圧力検出素子(34)は、前記インジェクタ(20)の先端部の内周に配置されて前記燃料噴射孔(33b)が形成された弁座部材(33)と一体に形成されることを特徴とする、請求項1〜請求項7の何れか1項に記載の燃料直噴式内燃機関の筒内圧検出装置。
- 前記インジェクタ(20)の外周と、シリンダヘッド(12)のインジェクタ取付孔(12d)の内周との間にて燃焼ガスをシールするガスケット(53)を、前記インジェクタ(20)の軸線方向中間部に設けることを特徴とする、請求項1に記載の燃料直噴式内燃機関の筒内圧検出装置。
- 前記圧力検出素子(34)から延びる出力信号伝達部材(48)を、前記インジェクタ(20)の内部に配置することを特徴とする、請求項12に記載の燃料直噴式内燃機関の筒内圧検出装置。
- 前記圧力検出素子(34)から延びる出力信号伝達部材(48)を、前記ガスケット(53)の内面と前記インジェクタ(20)の外面との間に配置することを特徴とする、請求項12に記載の燃料直噴式内燃機関の筒内圧検出装置。
- 前記インジェクタ(20)の最先端に前記圧力検出素子(34)を配置することを特徴とする、請求項1に記載の燃料直噴式内燃機関の筒内圧検出装置。
Applications Claiming Priority (2)
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JP2011039719 | 2011-02-25 | ||
JP2011039719 | 2011-02-25 |
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JP2013501024A Division JP6054862B2 (ja) | 2011-02-25 | 2012-02-20 | 燃料直噴式内燃機関の筒内圧検出装置 |
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JP2017075957A JP2017075957A (ja) | 2017-04-20 |
JP6216028B2 true JP6216028B2 (ja) | 2017-10-18 |
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JP2016234284A Expired - Fee Related JP6216028B2 (ja) | 2011-02-25 | 2016-12-01 | 燃料直噴式内燃機関の筒内圧検出装置 |
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Country Status (6)
Country | Link |
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US (1) | US9587612B2 (ja) |
EP (1) | EP2679972B1 (ja) |
JP (2) | JP6054862B2 (ja) |
CN (1) | CN103380357B (ja) |
BR (1) | BR112013021592A2 (ja) |
WO (1) | WO2012115036A1 (ja) |
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-
2012
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- 2012-02-20 BR BR112013021592A patent/BR112013021592A2/pt not_active IP Right Cessation
- 2012-02-20 EP EP12749964.8A patent/EP2679972B1/en not_active Not-in-force
- 2012-02-20 JP JP2013501024A patent/JP6054862B2/ja not_active Expired - Fee Related
- 2012-02-20 CN CN201280009218.2A patent/CN103380357B/zh not_active Expired - Fee Related
- 2012-02-20 WO PCT/JP2012/053959 patent/WO2012115036A1/ja active Application Filing
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EP2679972B1 (en) | 2017-07-26 |
CN103380357A (zh) | 2013-10-30 |
JP6054862B2 (ja) | 2016-12-27 |
BR112013021592A2 (pt) | 2016-11-16 |
WO2012115036A1 (ja) | 2012-08-30 |
EP2679972A1 (en) | 2014-01-01 |
US20140048041A1 (en) | 2014-02-20 |
JP2017075957A (ja) | 2017-04-20 |
EP2679972A4 (en) | 2014-10-15 |
CN103380357B (zh) | 2016-03-02 |
US9587612B2 (en) | 2017-03-07 |
JPWO2012115036A1 (ja) | 2014-07-07 |
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