US20040168432A1 - Method and apparatus for controlling a secondary air stream in an internal combustion engine - Google Patents

Method and apparatus for controlling a secondary air stream in an internal combustion engine Download PDF

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Publication number
US20040168432A1
US20040168432A1 US10/729,373 US72937303A US2004168432A1 US 20040168432 A1 US20040168432 A1 US 20040168432A1 US 72937303 A US72937303 A US 72937303A US 2004168432 A1 US2004168432 A1 US 2004168432A1
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US
United States
Prior art keywords
secondary air
air stream
accelerator pedal
exhaust system
control
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.)
Abandoned
Application number
US10/729,373
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English (en)
Inventor
Markus Beylich
Karl-Ernst Hummel
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.)
Mann and Hummel GmbH
Original Assignee
Mann and Hummel GmbH
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 Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Assigned to MANN & HUMMEL GMBH reassignment MANN & HUMMEL GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BEYLICH, MARKUS, HUMMEL, KARL-ERNST
Publication of US20040168432A1 publication Critical patent/US20040168432A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional air
    • F01N3/32—Arrangements for supply of additional air using air pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • F01N3/222—Control of additional air supply only, e.g. using by-passes or variable air pump drives using electric valves only
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • the invention relates to a method and a apparatus for controlling a secondary air stream in an internal combustion engine in which engine actuation signals and sensor signals from an engine control system are evaluated in a secondary air control unit and used as control parameters for regulating the secondary air stream.
  • the heretofore known systems primarily also use the position of the throttle valve in the intake tract of the internal combustion engine as a control parameter for regulating the amount of secondary air.
  • Another object of the invention is to provide a method and apparatus for regulating the introduction of a secondary air stream which enables simple control as close to real-time as possible of an optimal secondary air stream.
  • Prior art methods and apparatuses for controlling the introduction of a secondary air stream in the exhaust system of an internal combustion engine for a motor vehicle have utilized a control unit for evaluating actuating signals and sensor signals of the engine control and for adjusting the secondary air stream.
  • the position of the accelerator pedal of the motor vehicle is advantageously evaluated as an additional sensed parameter to be included in the control by means of the control unit.
  • the position of the accelerator pedal can be detected in a simple manner using suitable sensors and, in addition to being evaluated in a central engine control for a plurality of engine functions, can be supplied in parallel directly to the control unit for regulating the secondary air stream.
  • the secondary air stream feed advantageously discharges into a feed of an exhaust system disposed upstream of a catalytic converter.
  • a storage catalytic converter is further connected downstream of the catalytic converter.
  • the downstream arrangement of such a storage catalytic converter per se is disclosed in DE 198 16 276 A1.
  • a position sensor is mounted on the accelerator pedal of the motor vehicle to detect the mechanical displacement of the pedal.
  • the output signal of this position sensor is supplied to the control unit for adjusting the secondary air stream either discretely or via a vehicle-internal bus system.
  • the invention is advantageous particularly because in newer vehicles, a direct mechanical coupling of the accelerator pedal and the throttle valve in the intake tract of the internal combustions engine, e.g., by means of a Bowden cable, is frequently eliminated.
  • engine function drive-by-wire
  • electronic signaling of the pedal position there is a risk that the difference between the actual position of the accelerator pedal and the position of the throttle valve, which typically receives its actuating signal from the engine control, becomes increasingly larger.
  • the position of the accelerator pedal which directly corresponds to what is desired by the driver, is increasingly different from the result calculated by the engine control, e.g., to control the throttle valve, because it is increasingly modified by the intervention of various control devices such as a so-called acceleration skid control or other control device.
  • the arrangement used in the method and apparatus of the present invention especially enables the earliest possible detection of, for instance, an impending drop in the manifold pressure in the intake system. This makes possible a rapid response since the signal from the accelerator pedal provides this information first.
  • the figure shows an internal combustion engine 10 equipped with an intake tract 11 and an exhaust system 12 .
  • the intake tract comprises at least an air filter 13 and a throttle valve 14 .
  • the exhaust system is equipped with a catalytic converter 15 . Downstream of the air filter 13 and upstream of the throttle valve 14 a bypass line 16 branches off, which returns to the intake tract 11 downstream of the throttle valve.
  • the bypass line 16 further has a turbine 18 , which is driven by a bypass air stream 19 .
  • the turbine is mechanically coupled to a compressor 20 that conveys a secondary air stream 21 in a secondary air line 22 .
  • the secondary air line discharges into an exhaust manifold 23 of the exhaust system 12 upstream of the catalytic converter 15 . Downstream of this catalytic converter 15 a storage catalytic converter 17 (DeNOx catalytic converter) is connected. Arrows along the lines indicate the flow direction of an intake air stream 24 , the bypass air stream 19 , the secondary air stream 21 , and the exhaust.
  • the secondary air system described above is equipped with a control unit 39 , which communicates with an engine control 40 .
  • characteristic performance data is stored in the control unit 39 , which makes it possible to process various measured values of the secondary air system and the engine.
  • At least the mass rate of flow of the secondary air stream 21 by means of a sensor 42 a and the throttle valve position are determined.
  • a sensor 42 a it is also possible to provide a sensor 42 c , which measures the air stream on the turbine side.
  • the mechanical coupling between the compressor 20 and the turbine 18 can also provide information on the secondary air stream. It is also possible to use engine control information, e.g., the mass rate of flow of combustion air in the intake tract 11 measured by the sensor 42 b.
  • the control unit 39 is simultaneously used to operate the control valve 41 and a throttle valve 38 a .
  • the control valve 41 controls the bypass air stream 19 whereas the throttle valve 38 a is intended to control the effective secondary air stream.
  • the throttle valve 38 a is provided in an additional line 43 forming a bypass for the compressor 20 . This makes it possible to control the effective secondary air stream by opening the throttle valve 38 a and returning the compressed air.
  • the control unit 39 has an additional input for a controlled variable, which is derived from the position of a accelerator pedal 45 of the motor vehicle without processing in the engine control.
  • a sensor 46 can be used to detect the mechanical position of the accelerator pedal 45 directly. This direct position of the accelerator pedal 45 , which corresponds to the driver's intent as described in the introduction, is therefore excellently suited for control and can be used for controlling the engine in addition to the control variable obtained from the position of the throttle valve 14 .
  • an inlet 23 a is provided, which opens into the exhaust system 12 downstream of the catalytic converter 15 .
  • a control member 44 is used to connect the feed 23 or the feed 23 a with the secondary air line or to disconnect it. A simultaneous connection of both feeds 23 , 23 a is not provided.
  • the feed 23 a for the secondary air is intended for the operating state of desulfation of the catalytic converter 15 .
  • the feed 23 a can also be omitted.
  • the exhaust system would be constructed only with the catalytic converter 15 as a simple 3-way cat converter while the catalytic converter 17 would be eliminated.
  • the function of the secondary air would be limited to accelerating the heat-up phase of the catalytic converter 15 during cold start.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
US10/729,373 2002-12-07 2003-12-08 Method and apparatus for controlling a secondary air stream in an internal combustion engine Abandoned US20040168432A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10257287.9 2002-12-07
DE10257287 2002-12-07

Publications (1)

Publication Number Publication Date
US20040168432A1 true US20040168432A1 (en) 2004-09-02

Family

ID=32518852

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/729,373 Abandoned US20040168432A1 (en) 2002-12-07 2003-12-08 Method and apparatus for controlling a secondary air stream in an internal combustion engine

Country Status (3)

Country Link
US (1) US20040168432A1 (de)
EP (1) EP1550797A3 (de)
DE (1) DE10357038A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040181619A1 (en) * 2002-03-04 2004-09-16 Seiko Epson Corporation Image and sound input-output control
US20070261394A1 (en) * 2006-05-11 2007-11-15 Mandrusiak Gary D Fluid extraction arrangement for engine air induction system
US20100000204A1 (en) * 2008-07-01 2010-01-07 Woodward Governor Company Passive Secondary Air Delivery System for Two Bed Catalyst System
US20120124995A1 (en) * 2010-11-18 2012-05-24 Ford Global Technologies, Llc Exhaust system for internal combustion engines with particle filter
US11415033B2 (en) * 2018-03-09 2022-08-16 Daimler Ag Method for operating a petrol engine, in particular of a motor vehicle, and motor vehicle

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005036365A1 (de) * 2005-07-29 2007-02-01 Mann + Hummel Gmbh Brennkraftmaschine mit Sekundärlufteinblassystem
DE102006001852B3 (de) * 2006-01-13 2007-06-21 Siemens Ag Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine
DE102006004239B4 (de) * 2006-01-30 2008-01-31 Siemens Ag Verfahren zum Betreiben einer Sekundärlufteinrichtung für eine Brennkraftmaschine
WO2013115205A1 (ja) 2012-01-31 2013-08-08 Ｊｆｅスチール株式会社 発電機リム用熱延鋼板およびその製造方法
DE102015202323A1 (de) * 2015-02-10 2016-08-11 Volkswagen Aktiengesellschaft Aufladbare Brennkraftmaschine mit einem fremdgezündeten Verbrennungsmotor und Verfahren zum Betreiben einer derartigen Brennkraftmaschine
DE102020211634A1 (de) 2020-09-17 2022-03-17 Robert Bosch Gesellschaft mit beschränkter Haftung Brennkraftmaschine mit Sekundärluftsystem
DE102020007000A1 (de) 2020-11-16 2022-05-19 Daimler Ag Verbrennungskraftmaschine für ein Kraftfahrzeug, insbesondere für einen Kraftwagen

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779015A (en) * 1971-08-17 1973-12-18 Nissan Motor Exhaust gas treating system for internal combustion engine
US4068472A (en) * 1976-05-18 1978-01-17 Toyota Jidosha Kogyo Kabushiki Kaisha First and second air feeding means to regulate a/f ratio wherein second air feed requires two signals for actuation
US4207737A (en) * 1976-07-28 1980-06-17 Toyota Jidosha Kogyo Kabushiki Kaisha Apparatus for controlling the amount of secondary air injection
US5388403A (en) * 1993-03-12 1995-02-14 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device for an engine
US5992143A (en) * 1996-01-18 1999-11-30 Hitachi, Ltd. Control device for internal combustion engine
US6044643A (en) * 1997-12-15 2000-04-04 General Motors Corporation Engine control system and method
US20030167751A1 (en) * 2000-02-10 2003-09-11 Holger Paffrath Method and device for simultaneous regulation of an intake air flow for an internal combustion engine and a secondary air flow in the exhaust system of the same internal combustion engine
US6637191B1 (en) * 2002-11-22 2003-10-28 Ford Global Technologies, Llc Method and system for diagnosing a secondary air supply for an internal combustion engine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19643027A1 (de) * 1996-10-01 1998-04-09 Fev Motorentech Gmbh & Co Kg Verfahren zur Verminderung der Schadstoffemissionen eines Ottomotors
JP3277881B2 (ja) * 1998-04-06 2002-04-22 トヨタ自動車株式会社 内燃機関の排気浄化装置
DE19816276C2 (de) * 1998-04-11 2000-05-18 Audi Ag Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine
JP3826642B2 (ja) * 1999-11-08 2006-09-27 トヨタ自動車株式会社 内燃機関の排気昇温装置
DE10140520A1 (de) * 2001-08-17 2003-02-27 Fischer Ina Ladedruckkompressor für Verbrennungsmotoren

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779015A (en) * 1971-08-17 1973-12-18 Nissan Motor Exhaust gas treating system for internal combustion engine
US4068472A (en) * 1976-05-18 1978-01-17 Toyota Jidosha Kogyo Kabushiki Kaisha First and second air feeding means to regulate a/f ratio wherein second air feed requires two signals for actuation
US4207737A (en) * 1976-07-28 1980-06-17 Toyota Jidosha Kogyo Kabushiki Kaisha Apparatus for controlling the amount of secondary air injection
US5388403A (en) * 1993-03-12 1995-02-14 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device for an engine
US5992143A (en) * 1996-01-18 1999-11-30 Hitachi, Ltd. Control device for internal combustion engine
US6044643A (en) * 1997-12-15 2000-04-04 General Motors Corporation Engine control system and method
US20030167751A1 (en) * 2000-02-10 2003-09-11 Holger Paffrath Method and device for simultaneous regulation of an intake air flow for an internal combustion engine and a secondary air flow in the exhaust system of the same internal combustion engine
US6637191B1 (en) * 2002-11-22 2003-10-28 Ford Global Technologies, Llc Method and system for diagnosing a secondary air supply for an internal combustion engine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040181619A1 (en) * 2002-03-04 2004-09-16 Seiko Epson Corporation Image and sound input-output control
US6934746B2 (en) * 2002-03-04 2005-08-23 Seiko Epson Corporation Image and sound input-output control
US20070261394A1 (en) * 2006-05-11 2007-11-15 Mandrusiak Gary D Fluid extraction arrangement for engine air induction system
US20100000204A1 (en) * 2008-07-01 2010-01-07 Woodward Governor Company Passive Secondary Air Delivery System for Two Bed Catalyst System
US20120124995A1 (en) * 2010-11-18 2012-05-24 Ford Global Technologies, Llc Exhaust system for internal combustion engines with particle filter
US8783020B2 (en) * 2010-11-18 2014-07-22 Ford Global Technologies, Llc Exhaust system for internal combustion engines with particle filter
US11415033B2 (en) * 2018-03-09 2022-08-16 Daimler Ag Method for operating a petrol engine, in particular of a motor vehicle, and motor vehicle

Also Published As

Publication number Publication date
EP1550797A3 (de) 2006-05-31
DE10357038A1 (de) 2004-07-15
EP1550797A2 (de) 2005-07-06

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Legal Events

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AS Assignment

Owner name: MANN & HUMMEL GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BEYLICH, MARKUS;HUMMEL, KARL-ERNST;REEL/FRAME:015314/0073

Effective date: 20040318

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION