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GB2399178B - Method of accurately estimating air to fuel ratio - Google Patents

Method of accurately estimating air to fuel ratio

Info

Publication number
GB2399178B
GB2399178B GB0305115A GB0305115A GB2399178B GB 2399178 B GB2399178 B GB 2399178B GB 0305115 A GB0305115 A GB 0305115A GB 0305115 A GB0305115 A GB 0305115A GB 2399178 B GB2399178 B GB 2399178B
Authority
GB
United Kingdom
Prior art keywords
fuel ratio
accurately estimating
estimating air
air
accurately
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.)
Expired - Fee Related
Application number
GB0305115A
Other versions
GB0305115D0 (en
GB2399178A (en
Inventor
Bruce William Campbell
David Gregory
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Priority to GB0305115A priority Critical patent/GB2399178B/en
Publication of GB0305115D0 publication Critical patent/GB0305115D0/en
Publication of GB2399178A publication Critical patent/GB2399178A/en
Application granted granted Critical
Publication of GB2399178B publication Critical patent/GB2399178B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
    • F02D41/1458—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio with determination means using an estimation
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
    • F02D41/1456—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio with sensor output signal being linear or quasi-linear with the concentration of oxygen
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
    • F02D41/187—Circuit arrangements for generating control signals by measuring intake air flow using a hot wire flow sensor

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
GB0305115A 2003-03-06 2003-03-06 Method of accurately estimating air to fuel ratio Expired - Fee Related GB2399178B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0305115A GB2399178B (en) 2003-03-06 2003-03-06 Method of accurately estimating air to fuel ratio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0305115A GB2399178B (en) 2003-03-06 2003-03-06 Method of accurately estimating air to fuel ratio

Publications (3)

Publication Number Publication Date
GB0305115D0 GB0305115D0 (en) 2003-04-09
GB2399178A GB2399178A (en) 2004-09-08
GB2399178B true GB2399178B (en) 2006-06-07

Family

ID=9954224

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0305115A Expired - Fee Related GB2399178B (en) 2003-03-06 2003-03-06 Method of accurately estimating air to fuel ratio

Country Status (1)

Country Link
GB (1) GB2399178B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115822794B (en) * 2022-12-27 2025-06-03 广西玉柴机器股份有限公司 Control system and strategy for target compensation of air-fuel ratio and oxygen storage percentage in natural gas engines

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4211116A1 (en) * 1992-04-03 1993-10-07 Bosch Gmbh Robert On-board detection of state of IC engine exhaust catalyser - increasing lean-rich cycle until exhaust gas probe signal indicates noticeable change to determine oxygen@ storage capacity
US5901552A (en) * 1996-02-23 1999-05-11 Robert Bosch Gmbh Method of adjusting the air/fuel ratio for an internal combustion engine having a catalytic converter
US6076348A (en) * 1998-06-26 2000-06-20 Ford Motor Company Engine operating system for maximizing efficiency and monitoring performance of an automotive exhaust emission control system
JP2000303880A (en) * 1999-04-26 2000-10-31 Unisia Jecs Corp Three-way catalyst oxygen storage amount control device
WO2000068551A1 (en) * 1999-05-05 2000-11-16 Ford Global Technologies, Inc. Engine management system
EP1128043A2 (en) * 2000-02-23 2001-08-29 Nissan Motor Co., Ltd. Air-fuel ratio control of engine
EP1128046A2 (en) * 2000-02-24 2001-08-29 Nissan Motor Co., Ltd. Engine exhaust purification device
EP1130239A2 (en) * 2000-02-17 2001-09-05 Nissan Motor Co., Ltd. Engine exhaust purification device
EP1167726A2 (en) * 2000-06-26 2002-01-02 Toyota Jidosha Kabushiki Kaisha Air-fuel ratio control apparatus of internal combustion engine
US20020152743A1 (en) * 2000-02-16 2002-10-24 Takeshi Nakamura Engine exhaust purification device
US20020157380A1 (en) * 2000-02-24 2002-10-31 Masatomo Kakuyama Engine exhaust purification device
US20020157381A1 (en) * 2000-02-25 2002-10-31 Masatomo Kakuyama Engine exhaust purification arrangement

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4211116A1 (en) * 1992-04-03 1993-10-07 Bosch Gmbh Robert On-board detection of state of IC engine exhaust catalyser - increasing lean-rich cycle until exhaust gas probe signal indicates noticeable change to determine oxygen@ storage capacity
US5901552A (en) * 1996-02-23 1999-05-11 Robert Bosch Gmbh Method of adjusting the air/fuel ratio for an internal combustion engine having a catalytic converter
US6076348A (en) * 1998-06-26 2000-06-20 Ford Motor Company Engine operating system for maximizing efficiency and monitoring performance of an automotive exhaust emission control system
JP2000303880A (en) * 1999-04-26 2000-10-31 Unisia Jecs Corp Three-way catalyst oxygen storage amount control device
WO2000068551A1 (en) * 1999-05-05 2000-11-16 Ford Global Technologies, Inc. Engine management system
US20020152743A1 (en) * 2000-02-16 2002-10-24 Takeshi Nakamura Engine exhaust purification device
EP1130239A2 (en) * 2000-02-17 2001-09-05 Nissan Motor Co., Ltd. Engine exhaust purification device
EP1128043A2 (en) * 2000-02-23 2001-08-29 Nissan Motor Co., Ltd. Air-fuel ratio control of engine
EP1128046A2 (en) * 2000-02-24 2001-08-29 Nissan Motor Co., Ltd. Engine exhaust purification device
US20020157380A1 (en) * 2000-02-24 2002-10-31 Masatomo Kakuyama Engine exhaust purification device
US20020157381A1 (en) * 2000-02-25 2002-10-31 Masatomo Kakuyama Engine exhaust purification arrangement
EP1167726A2 (en) * 2000-06-26 2002-01-02 Toyota Jidosha Kabushiki Kaisha Air-fuel ratio control apparatus of internal combustion engine

Also Published As

Publication number Publication date
GB0305115D0 (en) 2003-04-09
GB2399178A (en) 2004-09-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20190306