EP0502849A1 - Elektronisches steuersystem für die kraftstoffzumessung bei einer brennkraftmaschine. - Google Patents
Elektronisches steuersystem für die kraftstoffzumessung bei einer brennkraftmaschine.Info
- Publication number
- EP0502849A1 EP0502849A1 EP90914675A EP90914675A EP0502849A1 EP 0502849 A1 EP0502849 A1 EP 0502849A1 EP 90914675 A EP90914675 A EP 90914675A EP 90914675 A EP90914675 A EP 90914675A EP 0502849 A1 EP0502849 A1 EP 0502849A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal
- control system
- sum
- electronic control
- wall film
- 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
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/047—Taking into account fuel evaporation or wall wetting
-
- 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
- F02D41/04—Introducing corrections for particular operating conditions
Definitions
- the invention relates to an electronic control system for fuel metering in an internal combustion engine with sensors for load, speed and temperature, means for determining a basic injection quantity signal and a transition compensation signal for adapting the metered fuel quantity in the event of acceleration and deceleration according to the preamble of the main claim.
- US Pat. No. 4,440,136 discloses a fuel metering system in which an enrichment factor is formed according to a specific formula for the acceleration enrichment and the individual components of the formula can be called up from memories depending on the load and speed.
- FM 1 is speed and load dependent and FM 2 temperature dependent.
- DE-OS 36 23 041 and the corresponding US patent application SN 169 274 describe a method for fuel metering in acceleration Case known that takes into account the temporal relationship between the occurrence of the acceleration request signal and the intake valve times, so that the required additional amount of fuel for realizing the acceleration request can be metered as optimally as possible. For this purpose, provision is made, inter alia, to distribute the calculated additional quantity of fuel over a number of successive metering processes or to provide so-called intermediate splashes.
- the physical problem with acceleration enrichment is to provide the required additional quantity in the combustion chambers of the internal combustion engine itself. This is particularly difficult at low temperatures because part of the quantity of fuel metered into the intake manifold then condenses on the walls of the intake manifold and is therefore ultimately not immediately available to the actual combustion process.
- the fuel depositing on the inner wall of the intake manifold forms a so-called fuel wall film. In addition to the design, it is primarily temperature, speed and load dependent. Since the assembly and disassembly of the fuel wall film in the case of non-stationary operating states of the internal combustion engine is very difficult to master, different approaches for describing the wall film have already become known in the literature. A basic work on this can be found in the SAE paper 810494 "Transient A / F Control Caracteristics of the 5 liter Central Fuel Injection Engine" by CF Aguino.
- the object of the present invention is to provide an electronic control system for the fuel metering in an internal combustion engine, in which an optimal transition behavior with regard to exhaust gas is achieved during acceleration and deceleration processes.
- the control system for fuel metering according to the invention is characterized by good exhaust gas behavior in the transition mode, in that a transition compensation signal for adapting the metered fuel quantity in the event of acceleration and deceleration is processed, including a wall film quantity difference signal and a control factor signal, depending on the operating parameters.
- FIG. 1 shows a rough overview diagram of an electronic control system for fuel metering in an internal combustion engine
- FIG. 2 shows in block form the most important elements of an electronic control system for fuel metering in connection with the provision of a transition compensation signal
- FIG. 3 shows a flow diagram of a first possibility for forming a transition compensation signal
- FIG. 4a shows a time diagram of this implementation
- FIG. 4b shows a time diagram to show a further possibility of forming a transition compensation signal
- FIG. 5 shows a flow diagram to implement this second possibility of forming a transition compensation signal.
- FIG. 1 shows a rough overview of an internal combustion engine with its most important sensors, a control unit and an injection valve.
- the internal combustion engine is designated 10. It has an air intake pipe 11 and an exhaust pipe 12. In the air intake pipe 11 there is a throttle valve 13, possibly an air quantity or air mass meter 14 and an injection valve 15 for metering the required amount of fuel into the air flow flowing to the internal combustion engine 10.
- a speed sensor is denoted by 16, a temperature sensor by 17.
- the basic structure of a fuel metering system for an internal combustion engine shown in FIG. 1 is known.
- the invention is concerned with the problem of providing a transition compensation signal for the acceleration or deceleration case with the aim of achieving the best possible transition behavior of the internal combustion engine or the vehicle equipped therewith while at the same time cleaning the exhaust gas as cleanly as possible.
- FIG. 2 A block diagram of the electronic control system according to the invention for fuel metering can be found in FIG. 2. There, elements already known from FIG. 1 are provided with the reference numbers already mentioned.
- a basic map for emitting a basic injection signal tlk is designated by 25.
- a control factor map for delivering a control factor signal Tk bears the reference numeral 26 and 27 denotes a wall film quantity map for delivering a corresponding wall film quantity signal Wk. All three maps 25, 26 and 27 receive signals from the load sensor 17 and speed sensor 15 on the input side.
- a block 30 emits a signal which is the end of a
- a subsequent block 31 generates a correction signal TUKSAS depending on the previous duration of an overrun operating phase.
- An addition point 32 subsequently connects the output signals of the two blocks 29 and 31.
- There follows a multiplication point 33 in which the output signal of the addition point 32 is multiplicatively linked to a temperature-dependent signal from a block 34 which is in turn connected to the temperature sensor 16.
- the result is then a wall film change signal ⁇ Wn corrected as a function of temperature and operating time.
- difference-forming element 39 which receives both the signal on line 35 and the output signal of multiplication point 36 and which forms the second signal to be processed in block 29 one calculation step later.
- FIG. 2 The subject of FIG. 2 is expediently explained on the basis of a flow chart shown in FIG.
- the individual calculation steps can take place both in the time grid and in the angle grid (e.g. related to the crankshaft).
- Block 41 reading a load value ⁇ k and a speed value nk.
- the letter k clarifies the values of the individual variables available at time tk. With k-1 the corresponding values are designated at the previous sampling time.
- Block 41 is followed by a block 42, in which a value for the basic measuring signal tlk, for the wall film fuel quantity Wk and a control factor Tk is read out from the characteristic diagrams 25, 26 and 27 known from FIG. 2 or is already made available as interpolation values become.
- FIGS. 2 and 3 thus disclose a load-dependent and speed-dependent reading of a wall film fuel quantity signal from a corresponding characteristic diagram 27 or 42 at a sampling time t tk.
- This wall film fuel quantity value is redetermined at each sampling time depending on the load and speed and a difference is determined therefrom. This is followed by taking into account the residual values of previous wall film differences with blocks 29 and 44 respectively. Depending on the duration of the preceding overrun operation or the prevailing temperature, correction terms are then formed, which ultimately result in a wall film fuel quantity signal SUM ⁇ Wk on line 35 or in block 47.
- a control factor signal Tk from the control factor map 26 or 42 is taken into account multiplicatively for the formation of a current applicable transition compensation signal UKk and this transition compensation signal UKk is added to the basic injection quantity signal tlk from the basic map 25.
- FIG. 4a shows an example of the course of the transition compensation (UK) as it results from the function described in FIGS. 2) and 3).
- An acceleration request should occur at time to.
- the time course of the transition compensation is determined by the throttle valve and speed-dependent control factor T.
- FIG. 4b shows a typical course when the transition compensation is implemented differently.
- a so-called intermediate spray is triggered, which provides an additional quantity of fuel asynchronously to the normal injection.
- the remaining excess amount is divided into two stores.
- the exponential de-energization of these memories begins, with one memory being de-energized quickly and the other slowly. From time t 2, only the slow downward control is effective.
- the course from FIG. 4b makes it possible to dispense with the calculation of the control factor from a characteristic diagram. Instead, the map is replaced by 2 control factors, which are derived from 2 applicable constants. In order to make the allocation to fast and slow storage variable at different speed / load points, the distribution factor can also be described by a map of speed and load.
- FIG. 5 shows a possible implementation of the signal curve in FIG. 4b. Blocks which correspond to those in FIG. 3 are also provided with the corresponding reference numbers. It can be seen that in block 22 the formation of a control factor signal from a map does not take place and this factor is specifically formed in the further course. Following the block 43 known from FIG. 3 regarding the formation of a current wall film difference signal ⁇ Wn, this difference signal is queried for a threshold.
- a L , A S and A Z are applicable factors, which divide the total newly added wall film difference ⁇ Wn into the three long-term, short-term and intermediate spatter stores.
- Intermediate sprayer signal UKK Z set to zero in block 61.
- a programmatic union 62 connects the outputs of the two blocks 56 and 61 and the interrogation unit 59 with respect to the output "change in throttle valve position negative".
- FIG. 3 The flow diagram of FIG. 3 is followed by a block 47, which in turn is followed by a block 66 for forming an overall injection time signal.
- a query 67 follows a threshold greater or less than 0. If the total injection signal is less than 0, the injection time is limited to 0 in a block 68 and at the same time the negative The rest is taken into account for the next injection.
- the entire injection signal can be metered in without the following
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3939548 | 1989-11-30 | ||
DE3939548A DE3939548A1 (de) | 1989-11-30 | 1989-11-30 | Elektronisches steuersystem fuer die kraftstoffzumessung bei einer brennkraftmaschine |
PCT/DE1990/000774 WO1991008390A1 (de) | 1989-11-30 | 1990-10-12 | Elektronisches steuersystem für die kraftstoffzumessung bei einer brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0502849A1 true EP0502849A1 (de) | 1992-09-16 |
EP0502849B1 EP0502849B1 (de) | 1994-08-24 |
Family
ID=6394473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90914675A Expired - Lifetime EP0502849B1 (de) | 1989-11-30 | 1990-10-12 | Elektronisches steuersystem für die kraftstoffzumessung bei einer brennkraftmaschine |
Country Status (7)
Country | Link |
---|---|
US (1) | US5243948A (de) |
EP (1) | EP0502849B1 (de) |
JP (1) | JP2877953B2 (de) |
KR (1) | KR0151702B1 (de) |
DE (2) | DE3939548A1 (de) |
ES (1) | ES2062556T3 (de) |
WO (1) | WO1991008390A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4115211C2 (de) * | 1991-05-10 | 2003-04-30 | Bosch Gmbh Robert | Verfahren zum Steuern der Kraftstoffzumessung bei einer Brennkraftmaschine |
DE4306208A1 (de) * | 1993-02-27 | 1994-09-01 | Hella Kg Hueck & Co | Kraftstoffeinspritzsystem |
DE4420946B4 (de) * | 1994-06-16 | 2007-09-20 | Robert Bosch Gmbh | Steuersystem für die Kraftstoffzumessung bei einer Brennkraftmaschine |
JPH08177556A (ja) * | 1994-10-24 | 1996-07-09 | Nippondenso Co Ltd | 内燃機関の燃料供給量制御装置 |
DE19548054C1 (de) * | 1995-12-21 | 1997-06-05 | Siemens Ag | Verfahren zum Steuern einer Brennkraftmaschine im Schubbetrieb |
DE19819481A1 (de) * | 1998-04-30 | 1999-11-04 | Volkswagen Ag | Triebstrangmangementfunktion eines Fahrzeuges mit CVT-Getriebe |
DE10147622A1 (de) * | 2001-09-27 | 2003-04-10 | Volkswagen Ag | Verfahren zum Betreiben einer Brennkraftmaschine nach einem Schubbetrieb |
JP2003254118A (ja) * | 2002-02-28 | 2003-09-10 | Toyota Motor Corp | 車輌用内燃機関の運転停止制御方法 |
DE102007009840B4 (de) | 2007-03-01 | 2018-11-22 | Robert Bosch Gmbh | Verfahren zur Bestimmung einer Fehlfunktion einer Vorrichtung zur Kraftstoffzumessung |
FR2993318A3 (fr) * | 2012-07-10 | 2014-01-17 | Renault Sa | Adaptation de reglage moteur en transitoire |
DE102013206551A1 (de) * | 2013-04-12 | 2014-10-16 | Robert Bosch Gmbh | Verfahren zur Anpassung der Übergangskompensation |
JP6168097B2 (ja) | 2015-05-08 | 2017-07-26 | トヨタ自動車株式会社 | ハイブリッド自動車 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4357923A (en) * | 1979-09-27 | 1982-11-09 | Ford Motor Company | Fuel metering system for an internal combustion engine |
JPS5741441A (en) * | 1980-08-27 | 1982-03-08 | Hitachi Ltd | Warming-up correcting device for air fuel ratio controller |
DE3042246C2 (de) * | 1980-11-08 | 1998-10-01 | Bosch Gmbh Robert | Elektronisch gesteuerte Kraftstoff-Zumeßvorrichtung für eine Brennkraftmaschine |
JPS588238A (ja) * | 1981-07-06 | 1983-01-18 | Toyota Motor Corp | 燃料噴射式エンジンの燃料噴射量制御方法 |
US4939658A (en) * | 1984-09-03 | 1990-07-03 | Hitachi, Ltd. | Control method for a fuel injection engine |
DE3636810A1 (de) * | 1985-10-29 | 1987-04-30 | Nissan Motor | Kraftstoffeinspritzregelsystem fuer eine brennkraftmaschine |
JPS62182454A (ja) * | 1985-12-26 | 1987-08-10 | Honda Motor Co Ltd | 内燃エンジンの空燃比制御方法 |
DE3623041A1 (de) * | 1986-07-09 | 1988-01-14 | Bosch Gmbh Robert | Verfahren zur kraftstoffzuteilung |
JPS6361739A (ja) * | 1986-09-01 | 1988-03-17 | Hitachi Ltd | 燃料制御装置 |
JPS63314339A (ja) * | 1987-06-17 | 1988-12-22 | Hitachi Ltd | 空燃比制御装置 |
US4903668A (en) * | 1987-07-29 | 1990-02-27 | Toyota Jidosha Kabushiki Kaisha | Fuel injection system of an internal combustion engine |
JP2512787B2 (ja) * | 1988-07-29 | 1996-07-03 | 株式会社日立製作所 | 内燃機関のスロットル開度制御装置 |
-
1989
- 1989-11-30 DE DE3939548A patent/DE3939548A1/de not_active Withdrawn
-
1990
- 1990-10-12 JP JP2513541A patent/JP2877953B2/ja not_active Expired - Lifetime
- 1990-10-12 US US07/852,256 patent/US5243948A/en not_active Expired - Fee Related
- 1990-10-12 KR KR1019920701253A patent/KR0151702B1/ko not_active IP Right Cessation
- 1990-10-12 WO PCT/DE1990/000774 patent/WO1991008390A1/de active IP Right Grant
- 1990-10-12 DE DE59006920T patent/DE59006920D1/de not_active Expired - Lifetime
- 1990-10-12 EP EP90914675A patent/EP0502849B1/de not_active Expired - Lifetime
- 1990-10-12 ES ES90914675T patent/ES2062556T3/es not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9108390A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR920703981A (ko) | 1992-12-18 |
JPH05501595A (ja) | 1993-03-25 |
JP2877953B2 (ja) | 1999-04-05 |
US5243948A (en) | 1993-09-14 |
WO1991008390A1 (de) | 1991-06-13 |
DE59006920D1 (de) | 1994-09-29 |
ES2062556T3 (es) | 1994-12-16 |
DE3939548A1 (de) | 1991-06-06 |
KR0151702B1 (ko) | 1998-10-01 |
EP0502849B1 (de) | 1994-08-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0416270B1 (de) | Verfahren und Einrichtung zum Steuern und Regeln einer selbstzündenden Brennkraftmaschine | |
DE602004003390T2 (de) | Verfahren zur echtzeitbestimmung einer kraftstoffeinspritzungsströmungscharakteristik | |
DE4115211C2 (de) | Verfahren zum Steuern der Kraftstoffzumessung bei einer Brennkraftmaschine | |
DE2812442C2 (de) | ||
DE3531868C2 (de) | ||
DE3242795C2 (de) | Steuersystem zur Kraftstoffversorgung | |
EP0502849B1 (de) | Elektronisches steuersystem für die kraftstoffzumessung bei einer brennkraftmaschine | |
DE4140527A1 (de) | Steuervorrichtung fuer das luft/brennstoff-verhaeltnis zur verwendung in einem verbrennungsmotor | |
DE3221641C2 (de) | ||
EP0347446B1 (de) | Verfahren und einrichtung zur beeinflussung der luftzumessung bei einer brennkraftmaschine, insbesondere im leerlauf und schubbetrieb | |
DE3725521C2 (de) | ||
DE3922448C2 (de) | Regeleinrichtung für das Kraftstoff-Luftverhältnis einer Brennkraftmaschine | |
DE4215581A1 (de) | System zur Steuerung einer magnetventilgesteuerten Kraftstoffzumeßeinrichtung | |
DE4134522A1 (de) | Einrichtung und verfahren zur elektronischen kraftstoffeinspritzsteuerung fuer verbrennungsmotor | |
EP0819210A1 (de) | Verfahren zum ermitteln einer einspritzmehrmenge beim wiedereinsetzen einer brennkraftmaschine | |
DE19612453C2 (de) | Verfahren zum Bestimmen der in das Saugrohr oder in den Zylinder einer Brennkraftmaschine einzubringenden Kraftstoffmasse | |
DE3902303A1 (de) | Kraftstoffsteuerung fuer einen verbrennungsmotor | |
DE3726892C2 (de) | ||
DE4006301C2 (de) | ||
DE3921965C2 (de) | Einrichtung zur Bestimmung der Kraftstoffeinspritzmenge für eine Brennkraftmaschine | |
DE3438465A1 (de) | Verfahren zur steuerung der betriebsgroesse einer einrichtung zur steuerung des betriebes einer brennkraftmaschine | |
DE3310577C2 (de) | ||
DE3438429A1 (de) | Verfahren zur regelung einer betriebsgroesse einer regelanordnung fuer eine verbrennungskraftmaschine | |
DE3832270C2 (de) | ||
DE4040637A1 (de) | Elektronisches steuersystem fuer die kraftstoffzumessung bei einer brennkraftmaschine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19920414 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB |
|
17Q | First examination report despatched |
Effective date: 19931227 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19940826 |
|
REF | Corresponds to: |
Ref document number: 59006920 Country of ref document: DE Date of ref document: 19940929 |
|
ET | Fr: translation filed | ||
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2062556 Country of ref document: ES Kind code of ref document: T3 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20040928 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20041026 Year of fee payment: 15 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20051012 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20051013 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20051012 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20051013 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20091110 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20091215 Year of fee payment: 20 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20101012 |