EP0428550A1 - Stereolambdaregelung. - Google Patents
Stereolambdaregelung.Info
- Publication number
- EP0428550A1 EP0428550A1 EP19890908379 EP89908379A EP0428550A1 EP 0428550 A1 EP0428550 A1 EP 0428550A1 EP 19890908379 EP19890908379 EP 19890908379 EP 89908379 A EP89908379 A EP 89908379A EP 0428550 A1 EP0428550 A1 EP 0428550A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel metering
- values
- control
- pilot control
- value
- 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.)
- Granted
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
-
- 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
- F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
- F02D41/1441—Plural sensors
- F02D41/1443—Plural sensors with one sensor per cylinder or group of cylinders
-
- 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
- F02D41/003—Adding fuel vapours, e.g. drawn from engine fuel reservoir
- F02D41/0042—Controlling the combustible mixture as a function of the canister purging, e.g. control of injected fuel to compensate for deviation of air fuel ratio when purging
Definitions
- the invention relates to a method and a device for adapted pilot control and regulation of the air / fuel mixtures to be supplied to the two fuel metering devices of an internal combustion engine, which has two separate exhaust gas channels, each with a lambda probe and a catalytic converter.
- Such a method and an apparatus for carrying out the method are e.g. B. from a system of the applicant for piloting and regulating a 12-cylinder gasoline engine, which has two cylinder banks with six cylinders each.
- the fuel metering devices are designed as injection devices.
- the intake pipes are separated from one another and there are two separate tank ventilation valves.
- the adapted pilot control and regulation is carried out by two separate individual devices, each device being assigned to a cylinder bank.
- stereolambda control Characteristic of the stereolambda the separate exhaust gas ducts, each with a lambda probe and a catalytic converter, regulate.
- the exhaust pipes can be combined behind the catalytic converter.
- the suction lines do not need to be completely separated from each other, as in the application example described, but air can also be drawn in for both banks through a main pipe.
- Adapted pilot control and regulation means the method that, depending on the values of operating variables, pilot control values for setting the air / fuel mixture, generally provisional injection times, are determined.
- the precontrol values are selected such that a desired lambda value is to be achieved in the respective operating state, in particular lambda value 1, at
- Lean concepts a lambda value greater than 1. If deviations from the desired lambda value occur, these are corrected.
- an adaptation is also carried out, i. H. the pilot control values are corrected with integral results of the control manipulated variable. As a result, control deviations are kept within narrow limits, which leads to quick adjustment and low tendency to oscillate for adaptive pilot control and
- the invention is based on the object of specifying a method for stereolambda control which manages with a single device for adapted pilot control and regulation of the two fuel metering devices for two cylinder banks of an internal combustion engine.
- the invention is further based on the object of specifying a device for such a method for stereolambda control.
- the method according to the invention is based essentially on two findings.
- One finding is that the individual properties of the two cylinder banks of an internal combustion engine are all reflected in the two lambda value measurements carried out separately, that is to say can be taken into account by different values of the control manipulated variable and different values of the pilot control adaptation variables calculated from the control manipulated variable.
- the pilot control values are traditionally to be determined from characteristic diagrams or characteristic curves using complex calculation methods.
- the processing time of a control method can be shortened considerably with the method according to the invention, since the pilot control values are used jointly for both cylinder banks. The same applies in relation to lambda setpoints if it is a matter of lean regulation.
- the second finding is that a respective pre-control manipulated variable is not to be continuously modified with correction values for the two banks, but rather that the working cycles of the cylinders in the two banks are mutually ver are set so that in a first period the pre-control manipulated variable must be modified with correction values for one bank and then with correction values for the other bank.
- a pilot control value for the manipulated variables common to both fuel metering devices and a common lambda setpoint are determined, but values of a control manipulated variable and values of pilot control adaptation variables dependent on this are determined separately and successively superimposed on the common pilot control manipulated value.
- a device according to the invention for stereolambda control is accordingly characterized in that it is designed jointly for both cylinder banks and has means for carrying out the method steps mentioned.
- a common tank ventilation adaptation value is used for both fuel metering devices, which is determined from the control manipulated variable determined for one of the two fuel metering devices. This is possible even if completely separate suction lines are used.
- FIG. 1 shows in the form of a functional block diagram an embodiment of a method according to the invention. Description of exemplary embodiments
- injection valves are arranged as a fuel metering device 3.1.
- the second bank 1.2 has an intake port 2.2 with a fuel metering device 3.2.
- a first lambda probe 5.1 is fitted in the exhaust pipe 4.1 of the first cylinder bank 1.1.
- a corresponding second lambda sensor 5.2 is present in the exhaust pipe 4.2 of the second cylinder bank 1.2.
- the partial method is first described as it is executed for the first cylinder bank 1.1.
- a comparison step 6.1 the actual lambda value determined by the first lab sensor 5.1 is subtracted from a lambda target value.
- the lambda value is in the
- the lambda sol value is dependent on values from current operating variables, e.g. B. the accelerator pedal position and the speed, from a map or determined by evaluating characteristic curves.
- the difference value formed from the two lambda values is processed in a control step 7.1, labeled "1st control" in the figure, to output a control manipulated variable.
- the control manipulated variable is a control factor FR1.
- a pilot control set value TL x ⁇ Fi is modified multiplicatively, which was previously modified additively in a leakage air adaptation step 9.1 with a leakage air adaptation value.
- This leakage air adaptation value was obtained in a pre-control adaptation step 10.1 by integrating the control factor FR1 in a known manner.
- a multiplicative and an additive adaptation value are determined in the exemplary embodiment shown.
- the former is multiplicatively linked to the pilot control manipulated value modified by the above-mentioned steps in an adaptation step 11.1.
- the additive adaptation value is then added in an adaptation addition step 12.1.
- All adaptation values are continuously redetermined by integrating the control factor FR1, as long as a control adaptation flag 13.1 is set. This flag is shown in the figure as a switch that closes when moved to the left. On the other hand, when the flag is reset, corresponding to a shift of the switch to the right, tank ventilation adaptation takes place.
- the flag is at predetermined regular intervals of z. B. set or reset a few seconds.
- a tank ventilation adaptation value is determined in any known manner in a tank ventilation adaptation step 14.1, which value is linked multiply with the respectively existing pilot control manipulated value modified by pilot control adaptation values in a tank ventilation multiplication step 15.1.
- the pilot adaption values remain unchanged, while in periods with pre-tax adaption the tank ventilation adaption value remains unchanged, namely at the value 1.
- Pre-control control values are therefore modified in the pre-tax adaptation period with a variable control factor FR1 and variable pre-control set values, while the pre-control values during the tank adaptation period As before, be modified by the constantly changing control factor FR1 and the tank ventilation adaptation value.
- TIV1 preliminary injection time
- the provisional injection time TIV1 is via an interface 16 in a second also two cylinder banks 1.1 and
- crankshaft-dependent opening and closing times are determined for each injection valve.
- the interface 16 between two computers is provided in the exemplary embodiment because the computers customary in the current state of the art for determining adapted manipulated variables do not have enough outputs to accommodate several
- auxiliary computer can not only carry out the last modification step of the pilot control values, namely the multiplication step 17.1 for battery voltage correction, but it can also perform further of the aforementioned
- Lambda sol values and pilot control values are used together and only the values of the manipulated variables FR1 and FR2 and the adaptation values calculated from these values are determined individually for the cylinder bank.
- the pilot control values are not jointly modified for the first cylinder bank 1.1 and the second cylinder bank 1.2, but rather a pilot control value is first modified in a certain short period of time with values determined for the first cylinder bank 1.1 in order to provide an injection time for an injection valve on the first cylinder bank , and in a subsequent short period of time the pilot control value is modified with values for the second cylinder bank 1.2 in order to provide injection values for a single-seat valve there. Because of these measures, it is possible to get by with a single device for the stereolambda control of both cylinder banks 1.1 and 1.2. Even if this device is divided into a main computer and an auxiliary computer, it is still a common device.
- the tank ventilation adaptation step 14.2 is not carried out for the second cylinder bank, but a tank ventilation adaptation value is also required for this cylinder bank, the tank ventilation adaptation value 15.2 that was calculated in the tank ventilation adaptation step 14.1 is used in the tank ventilation multiplication step. This is possible because essentially the same disturbance variables act during the tank ventilation adaptation phase, the influences of which were adapted during the preceding pilot control adaptation phase and are accordingly taken into account in the pilot control adaptation values. Any small residual errors are compensated for by slightly different control actuators FR1 and FR2 for the two cylinder banks 1.1 and 1.2. The control factor correction value is also adopted. If the tank ventilation adaptation value is e.g. B.
- the tank ventilation adaptation step 14.1 is blocked and the tank ventilation adaptation step 14.2 is carried out instead.
- the adaptation value provided by this step is used not only in the tank ventilation multiplication step 15.2, but also in the tank ventilation multiplication step 15.1.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Exhaust Gas After Treatment (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3826527A DE3826527A1 (de) | 1988-08-04 | 1988-08-04 | Stereolambdaregelung |
DE3826527 | 1988-08-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0428550A1 true EP0428550A1 (de) | 1991-05-29 |
EP0428550B1 EP0428550B1 (de) | 1993-03-31 |
Family
ID=6360245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89908379A Expired - Lifetime EP0428550B1 (de) | 1988-08-04 | 1989-07-22 | Stereolambdaregelung |
Country Status (6)
Country | Link |
---|---|
US (1) | US5267548A (de) |
EP (1) | EP0428550B1 (de) |
JP (1) | JP2809460B2 (de) |
KR (1) | KR0147077B1 (de) |
DE (2) | DE3826527A1 (de) |
WO (1) | WO1990001628A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019053341A1 (en) | 2017-09-18 | 2019-03-21 | Jari Nokkala | RFID CAB |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2658743B2 (ja) * | 1992-07-01 | 1997-09-30 | トヨタ自動車株式会社 | 内燃機関の空燃比制御装置 |
US5476081A (en) * | 1993-06-14 | 1995-12-19 | Toyota Jidosha Kabushiki Kaisha | Apparatus for controlling air-fuel ratio of air-fuel mixture to an engine having an evaporated fuel purge system |
JP2969540B2 (ja) * | 1993-07-26 | 1999-11-02 | 株式会社ユニシアジェックス | 内燃機関の空燃比制御装置 |
DE19832020C1 (de) * | 1998-07-16 | 1999-04-01 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Überwachen der Funktion zweier Abgasturbolader |
JP3655145B2 (ja) * | 1999-10-08 | 2005-06-02 | 本田技研工業株式会社 | 多気筒内燃機関の空燃比制御装置 |
JP3655146B2 (ja) * | 1999-10-08 | 2005-06-02 | 本田技研工業株式会社 | 多気筒内燃機関の空燃比制御装置 |
DE10038974B4 (de) * | 2000-08-10 | 2007-04-19 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine insbesondere eines Kraftfahrzeugs |
DE10106921A1 (de) * | 2001-02-15 | 2002-08-22 | Bayerische Motoren Werke Ag | Verfahren zum Synchronisieren der Füllung von Zylindern einer Brennkraftmaschine, insbesondere eines Hubkolben-Verbrennungsmotors |
US7352468B2 (en) * | 2001-12-12 | 2008-04-01 | Trustees Of Princeton University | Cavity ring-down detection of surface plasmon resonance in an optical fiber resonator |
US20040118997A1 (en) * | 2001-12-12 | 2004-06-24 | Lehmann Kevin K. | Tapered fiber optic strain gauge using cavity ring-down spectroscopy |
US6925982B2 (en) | 2002-06-04 | 2005-08-09 | Ford Global Technologies, Llc | Overall scheduling of a lean burn engine system |
US6758185B2 (en) * | 2002-06-04 | 2004-07-06 | Ford Global Technologies, Llc | Method to improve fuel economy in lean burn engines with variable-displacement-like characteristics |
US6568177B1 (en) | 2002-06-04 | 2003-05-27 | Ford Global Technologies, Llc | Method for rapid catalyst heating |
US7111450B2 (en) | 2002-06-04 | 2006-09-26 | Ford Global Technologies, Llc | Method for controlling the temperature of an emission control device |
US6736121B2 (en) | 2002-06-04 | 2004-05-18 | Ford Global Technologies, Llc | Method for air-fuel ratio sensor diagnosis |
US6736120B2 (en) | 2002-06-04 | 2004-05-18 | Ford Global Technologies, Llc | Method and system of adaptive learning for engine exhaust gas sensors |
US6735938B2 (en) * | 2002-06-04 | 2004-05-18 | Ford Global Technologies, Llc | Method to control transitions between modes of operation of an engine |
US7168239B2 (en) | 2002-06-04 | 2007-01-30 | Ford Global Technologies, Llc | Method and system for rapid heating of an emission control device |
US6745747B2 (en) | 2002-06-04 | 2004-06-08 | Ford Global Technologies, Llc | Method for air-fuel ratio control of a lean burn engine |
US6769398B2 (en) | 2002-06-04 | 2004-08-03 | Ford Global Technologies, Llc | Idle speed control for lean burn engine with variable-displacement-like characteristic |
US6868827B2 (en) * | 2002-06-04 | 2005-03-22 | Ford Global Technologies, Llc | Method for controlling transitions between operating modes of an engine for rapid heating of an emission control device |
US7032572B2 (en) | 2002-06-04 | 2006-04-25 | Ford Global Technologies, Llc | Method for controlling an engine to obtain rapid catalyst heating |
DE102005004441B3 (de) * | 2005-01-31 | 2006-02-09 | Siemens Ag | Vorrichtung und Verfahren zum Ermitteln einer Stellgröße eines Reglers einer Brennkraftmaschine |
US7958866B2 (en) * | 2008-05-16 | 2011-06-14 | Cummins Intellectual Properties, Inc. | Method and system for closed loop lambda control of a gaseous fueled internal combustion engine |
DE102015213255A1 (de) | 2015-07-15 | 2017-01-19 | Robert Bosch Gmbh | Verfahren zur Adaption einer Querkopplung einer Tankentlüftungsanlage |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5834660B2 (ja) * | 1975-12-25 | 1983-07-28 | 日産自動車株式会社 | クウネンピセイギヨソウチ |
GB2064171A (en) * | 1979-11-23 | 1981-06-10 | British Leyland Cars Ltd | Control of Airfuel Ratio in an Automotive Emission Control System |
JPS56129730A (en) * | 1980-03-18 | 1981-10-12 | Nissan Motor Co Ltd | Fuel injection controlling system for internal combustion engine |
DE3502573C3 (de) * | 1985-01-26 | 2002-04-25 | Bosch Gmbh Robert | Vorrichtung zur Entlüftung von Kraftstofftanks |
DE3639946C2 (de) * | 1986-11-22 | 1997-01-09 | Bosch Gmbh Robert | Verfahren und Einrichtung zur Kompensation des Tankentlüftungsfehlers bei einem adaptiv lernenden Kraftstoffzufuhrsystem |
DE3813220C2 (de) * | 1988-04-20 | 1997-03-20 | Bosch Gmbh Robert | Verfahren und Einrichtung zum Stellen eines Tankentlüftungsventiles |
-
1988
- 1988-08-04 DE DE3826527A patent/DE3826527A1/de not_active Withdrawn
-
1989
- 1989-07-22 JP JP1507705A patent/JP2809460B2/ja not_active Expired - Fee Related
- 1989-07-22 DE DE8989908379T patent/DE58903982D1/de not_active Expired - Fee Related
- 1989-07-22 KR KR1019900700694A patent/KR0147077B1/ko not_active IP Right Cessation
- 1989-07-22 EP EP89908379A patent/EP0428550B1/de not_active Expired - Lifetime
- 1989-07-22 US US07/646,607 patent/US5267548A/en not_active Expired - Fee Related
- 1989-07-22 WO PCT/DE1989/000486 patent/WO1990001628A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9001628A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019053341A1 (en) | 2017-09-18 | 2019-03-21 | Jari Nokkala | RFID CAB |
Also Published As
Publication number | Publication date |
---|---|
DE58903982D1 (de) | 1993-05-06 |
KR0147077B1 (ko) | 1998-08-17 |
EP0428550B1 (de) | 1993-03-31 |
JP2809460B2 (ja) | 1998-10-08 |
US5267548A (en) | 1993-12-07 |
JPH04500107A (ja) | 1992-01-09 |
DE3826527A1 (de) | 1990-02-08 |
WO1990001628A1 (de) | 1990-02-22 |
KR900702199A (ko) | 1990-12-06 |
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