JP5814776B2 - 気体燃料漏れ検出装置 - Google Patents
気体燃料漏れ検出装置 Download PDFInfo
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- JP5814776B2 JP5814776B2 JP2011281367A JP2011281367A JP5814776B2 JP 5814776 B2 JP5814776 B2 JP 5814776B2 JP 2011281367 A JP2011281367 A JP 2011281367A JP 2011281367 A JP2011281367 A JP 2011281367A JP 5814776 B2 JP5814776 B2 JP 5814776B2
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- JP
- Japan
- Prior art keywords
- gaseous fuel
- pressure
- fuel
- fuel injection
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
- F02D19/025—Failure diagnosis or prevention; Safety measures; Testing
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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
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
- F02D19/026—Measuring or estimating parameters related to the fuel supply system
- F02D19/027—Determining the fuel pressure, temperature or volume flow, the fuel tank fill level or a valve position
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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
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0623—Failure diagnosis or prevention; Safety measures; Testing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
- F02D19/0642—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions
- F02D19/0647—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions the gaseous fuel being liquefied petroleum gas [LPG], liquefied natural gas [LNG], compressed natural gas [CNG] or dimethyl ether [DME]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0027—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures the fuel being gaseous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02D19/0686—Injectors
- F02D19/0692—Arrangement of multiple injectors per combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D2041/224—Diagnosis of the fuel system
- F02D2041/225—Leakage detection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
-
- 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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
-
- 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
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
図1は、本実施形態に係る燃料噴射システムAの概略構成図である。この燃料噴射システムAは、液体燃料(例えばガソリン)と気体燃料(例えば圧縮天然ガス)とを選択的に切替えて単一エンジン(図示省略)に供給するバイフューエルシステムであり、液体燃料供給系1と、気体燃料供給系2と、1st−ECU(Electronic Control Unit)3と、2nd−ECU4と、燃料切替スイッチ5とから構成されている。
図2は、2nd−ECU4がエンジン運転時に実施する気体燃料漏れ検出処理を表すフローチャートである。なお、2nd−ECU4は、エンジン運転中において図2に示す気体燃料漏れ検出処理を一定周期で繰り返し実施するものである。
(1)上記実施形態では、高圧側燃圧と燃料噴射積算量と漏れ閾値との対応関係を示す3次元マップデータを用いて、第1遮断弁23及び第2遮断弁24の開弁時の漏れ閾値を設定する場合を例示したが、例えば高圧側燃圧と燃料噴射積算量を変数とする演算式を用いて漏れ閾値を算出するようにしても良い。
Claims (3)
- 気体燃料タンクから気体燃料噴射弁に至る気体燃料供給経路に介挿された減圧弁より高圧側の気体燃料漏れを検出する気体燃料漏れ検出装置であって、
前記気体燃料噴射弁から噴射された気体燃料の積算量である燃料噴射積算量を算出する燃料噴射積算量算出手段と、
前記燃料噴射積算量及び前記減圧弁より高圧側の気体燃料圧力に基づいて前記気体燃料漏れの有無を判定するための漏れ閾値を設定する漏れ閾値設定手段と、
前記減圧弁より高圧側の気体燃料の圧力変化量を算出する圧力変化量算出手段と、
前記圧力変化量が前記漏れ閾値より大きい場合に前記気体燃料漏れと判定する燃料漏れ判定手段と、
を備えることを特徴とする気体燃料漏れ検出装置。 - 前記燃料噴射積算量算出手段は、前記気体燃料噴射弁による気体燃料噴射時間と、前記減圧弁より低圧側の気体燃料の圧力及び温度に基づいて前記燃料噴射積算量を算出することを特徴とする請求項1に記載の気体燃料漏れ検出装置。
- 前記漏れ閾値設定手段は、前記減圧弁より高圧側に介挿された遮断弁の開弁時には、前記燃料噴射積算量及び前記減圧弁より高圧側の気体燃料圧力に基づいて前記漏れ閾値を設定する一方、前記遮断弁の閉弁時には、予め定められた遮断弁閉弁時閾値を前記漏れ閾値として設定することを特徴とする請求項1または2に記載の気体燃料漏れ検出装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011281367A JP5814776B2 (ja) | 2011-12-22 | 2011-12-22 | 気体燃料漏れ検出装置 |
DE112012005442.3T DE112012005442B4 (de) | 2011-12-22 | 2012-12-18 | Leckerfassungsvorrichtung für gasförmige Kraftstoffe |
PCT/JP2012/082750 WO2013094589A1 (ja) | 2011-12-22 | 2012-12-18 | 気体燃料漏れ検出装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011281367A JP5814776B2 (ja) | 2011-12-22 | 2011-12-22 | 気体燃料漏れ検出装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2013130154A JP2013130154A (ja) | 2013-07-04 |
JP5814776B2 true JP5814776B2 (ja) | 2015-11-17 |
Family
ID=48668478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011281367A Expired - Fee Related JP5814776B2 (ja) | 2011-12-22 | 2011-12-22 | 気体燃料漏れ検出装置 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP5814776B2 (ja) |
DE (1) | DE112012005442B4 (ja) |
WO (1) | WO2013094589A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015215490A1 (de) * | 2015-08-13 | 2017-02-16 | Continental Automotive Gmbh | Verfahren zum Betreiben einer Vorrichtung zur Kraftstoffversorgung, Vorrichtung zur Kraftstoffversorgung und Computerprogrammprodukt |
CA2992230C (en) * | 2017-01-20 | 2020-02-18 | Power Solutions International, Inc. | Systems and methods for monitoring a fuel system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2692728B2 (ja) * | 1994-09-20 | 1997-12-17 | 本田技研工業株式会社 | ガスエンジン車両の燃料系異常検知システム |
JP3480108B2 (ja) * | 1995-04-04 | 2003-12-15 | 日産自動車株式会社 | ガスエンジンの燃料洩れ検出装置 |
JP3500846B2 (ja) * | 1996-03-08 | 2004-02-23 | スズキ株式会社 | 気体燃料の漏れ検出装置 |
JP3787826B2 (ja) * | 1997-10-09 | 2006-06-21 | 株式会社デンソー | ガスエンジンの燃料漏れ検出装置 |
JP2000054914A (ja) * | 1998-08-07 | 2000-02-22 | Toyota Motor Corp | 気体燃料供給装置 |
JP3949348B2 (ja) * | 2000-04-20 | 2007-07-25 | 本田技研工業株式会社 | ガス燃料供給装置 |
ITTO20010276A1 (it) * | 2001-03-23 | 2002-09-23 | Fiat Ricerche | Sistema per la diagnostica di perdite da un impianto di alimentazionea gas e per la verifica del funzionamento delle valvole facenti parte |
-
2011
- 2011-12-22 JP JP2011281367A patent/JP5814776B2/ja not_active Expired - Fee Related
-
2012
- 2012-12-18 WO PCT/JP2012/082750 patent/WO2013094589A1/ja active Application Filing
- 2012-12-18 DE DE112012005442.3T patent/DE112012005442B4/de active Active
Also Published As
Publication number | Publication date |
---|---|
JP2013130154A (ja) | 2013-07-04 |
DE112012005442T5 (de) | 2014-09-18 |
WO2013094589A1 (ja) | 2013-06-27 |
DE112012005442B4 (de) | 2017-05-24 |
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