JPH1172036A - Restart extension method of lambda control in internal combustion engine with lambda control - Google Patents
Restart extension method of lambda control in internal combustion engine with lambda controlInfo
- Publication number
- JPH1172036A JPH1172036A JP19046298A JP19046298A JPH1172036A JP H1172036 A JPH1172036 A JP H1172036A JP 19046298 A JP19046298 A JP 19046298A JP 19046298 A JP19046298 A JP 19046298A JP H1172036 A JPH1172036 A JP H1172036A
- Authority
- JP
- Japan
- Prior art keywords
- control
- extension
- air
- value
- set 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.)
- Withdrawn
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
- F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
- F02D41/1482—Integrator, i.e. variable slope
-
- 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
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/061—Introducing corrections for particular operating conditions for engine starting or warming up the corrections being time dependent
-
- 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
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
- F02D41/065—Introducing corrections for particular operating conditions for engine starting or warming up for starting at hot start or restart
-
- 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
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/068—Introducing corrections for particular operating conditions for engine starting or warming up for warming-up
-
- 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
- F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
- F02D41/1479—Using a comparator with variable reference
-
- 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
- F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
- F02D41/1483—Proportional component
-
- 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
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1409—Introducing closed-loop corrections characterised by the control or regulation method using at least a proportional, integral or derivative controller
-
- 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
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1413—Controller structures or design
- F02D2041/1422—Variable gain or coefficients
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)
- Lock And Its Accessories (AREA)
- Control Of Electric Motors In General (AREA)
- Motor And Converter Starters (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はλ制御を有する内燃
機関におけるλ制御の再始動延長方法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of extending the restart of λ control in an internal combustion engine having λ control.
【０００２】[0002]
【従来の技術】λ制御を有する内燃機関においては、λ
センサにより測定された空気比λの関数として制御装置
により、内燃機関により燃焼すべき空気燃料混合物が設
定される。2. Description of the Related Art In an internal combustion engine having λ control, λ
The controller determines the air-fuel mixture to be burned by the internal combustion engine as a function of the air ratio λ measured by the sensor.
【０００３】低温の機関における低温始動過程及び再始
動過程においてのみでなく高温の機関における再始動過
程においてもまた、λセンサが、その装着領域において
即ち低いセンサ温度において、極めてリーンな混合物を
形成する目標値に制御されることがある。この効果は酸
素リッチにより増幅され、この酸素リッチは、例えば惰
行運転において、ある場合はセンサ内にある場合は触媒
内に発生することがある。これにより、内燃機関の停止
過程の後に高い酸化窒素（ＮＯｘ）値が発生することが
ある。[0003] Not only in cold start and restart processes in cold engines, but also in restart processes in hot engines, the λ sensor forms a very lean mixture in its mounting area, ie at low sensor temperatures. It may be controlled to the target value. This effect is amplified by oxygen richness, which can occur, for example, in coasting operation, in some cases in the sensor and in the catalyst. As a result, high nitric oxide (NOx) values may be generated after the internal combustion engine is stopped.
【０００４】この理由から、低温の機関の場合、機関の
関数としての空気燃料混合物のリッチ延長が行われ、こ
れにより排気ガス中の好ましくない酸化窒素成分をほぼ
補償することができる。[0004] For this reason, in the case of cold engines, a rich extension of the air-fuel mixture as a function of the engine takes place, which makes it possible to substantially compensate for the undesirable nitrogen oxide components in the exhaust gas.
【０００５】ドイツ特許第２５２２２８３号から、電気
式燃料噴射装置により形成され且つ内燃機関に供給され
る燃料空気混合物のλ制御の始動延長及び／又は再始動
延長のための装置が既知であり、この装置においては、
特に始動後又は再始動過程において良好な慣らし運転を
達成するために、比較的費用を要する回路により内燃機
関の運転状態特に回転速度及び負荷状態並びに機関温度
の関数としてのλ制御の再始動延長が行われる。[0005] From DE 252 283 a device for starting and / or restarting the λ control of a fuel-air mixture formed by an electric fuel injection device and supplied to an internal combustion engine is known. In the device,
In order to achieve good running-in, especially after start-up or during the restarting process, a relatively expensive circuit makes it possible to extend the restart of the λ control as a function of the operating conditions of the internal combustion engine, in particular the rotational speed and load conditions, and the engine temperature. Done.
【０００６】このような回路は既存の噴射装置内にはそ
のまま組み込むことはできない。更に、ドイツ特許第２
５２２２８３号から既知の回路においてはλ制御が考慮
されていない。[0006] Such a circuit cannot be directly incorporated into an existing injection device. In addition, German Patent No. 2
The circuit known from 522283 does not consider λ control.
【０００７】[0007]
【発明が解決しようとする課題】従って、λ制御を有す
る内燃機関における再始動過程において有害な酸化窒素
の低減をできるだけ簡単な方法で可能にする、λ制御を
有する内燃機関におけるλ制御の再始動延長方法を提供
することが本発明の課題である。Accordingly, the restart of λ control in an internal combustion engine with λ control, which makes it possible to reduce harmful nitric oxides in the restart process in an internal combustion engine with λ control in the simplest way possible It is an object of the present invention to provide an extension method.
【０００８】[0008]
【課題を解決するための手段】この課題は、λ制御を有
する内燃機関におけるλ制御の再始動延長方法におい
て、燃料空気混合物のリーン延長又はリッチ延長が形成
されるように所定の時間間隔にわたり制御過程とは独立
にλ制御の設定値の所定の変化が行われることにより解
決される。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for extending the restart of λ control in an internal combustion engine having λ control, wherein the control is performed over a predetermined time interval so that a lean or rich extension of the fuel-air mixture is formed. The problem is solved by performing a predetermined change in the set value of the λ control independently of the process.
【０００９】燃料空気混合物のリーン延長又はリッチ延
長を達成するために所定の時間間隔にわたりλ制御の設
定値の所定の変化が行われることにより、存在する内燃
機関のλ制御を調節することによって、内燃機関の最適
な運転において即ち最適な空気比による運転において酸
化窒素の顕著な低減が達成されることは特に有利であ
る。By adjusting the λ control of the existing internal combustion engine by performing a predetermined change in the set value of the λ control over a predetermined time interval to achieve a lean or rich extension of the fuel-air mixture, It is particularly advantageous that a significant reduction of the nitric oxide is achieved in the optimal operation of the internal combustion engine, that is to say with the optimal air ratio.
【００１０】できるだけ最適なリッチ延長に関しては、
有利な実施形態において、内燃機関の停止時間即ち内燃
機関が停止されている時間が時間カウンタにより測定さ
れ、設定値の変化の値及び時間が停止時間の関数として
選択されるように設計されている。このようにして、セ
ンサ温度をセンサ等により測定する必要なく、空気燃料
混合物のリッチ延長を極めて正確にセンサ温度に適応さ
せることができる。[0010] Regarding the optimal rich extension as much as possible,
In an advantageous embodiment, the stop time of the internal combustion engine, i.e. the time during which the internal combustion engine is stopped, is measured by a time counter and is designed such that the value and the time of change of the setpoint are selected as a function of the stop time. . In this way, the rich extension of the air-fuel mixture can be adapted very accurately to the sensor temperature without having to measure the sensor temperature with a sensor or the like.
【００１１】停止時間に対する設定値の変化の割当て
は、例えば特性曲線群の形であらかじめ記憶させること
ができる。The assignment of the change of the set value to the stop time can be stored in advance, for example, in the form of a characteristic curve group.
【００１２】他の有利な実施形態において、設定値の変
化がλ制御装置の投入と共に終了されるように設計され
ている。λ制御に対して作動可能なセンサが必要である
ので、λ制御を投入するまでの時間即ちセンサが作動可
能となるまでに経過する時間が、センサ温度に対する間
接的な尺度として使用される。この場合、λセンサが作
動可能となったときに再始動過程が終了したことが推定
される。In another advantageous embodiment, it is provided that the change of the setpoint is terminated with the activation of the λ control. Since an operable sensor is required for λ control, the time to turn on the λ control, ie, the time that elapses before the sensor becomes operational, is used as an indirect measure of sensor temperature. In this case, it is estimated that the restart process has ended when the λ sensor becomes operable.
【００１３】他の実施形態において、設定値の変化の値
及び時間が機関温度及び／又はセンサ温度の関数として
選択されるように設計されている。In another embodiment, the value and the time of the change of the set value are designed to be selected as a function of the engine temperature and / or the sensor temperature.
【００１４】更に、他の実施形態において、空気質量流
量の時間積分の値及び／又は触媒の下流側のガイドセン
サにより出力される値が所定のしきい値を超えたときに
設定値の変化が中断されるように設計してもよい。Further, in another embodiment, when the value of the time integral of the air mass flow rate and / or the value output by the guide sensor on the downstream side of the catalyst exceeds a predetermined threshold value, the change of the set value is performed. It may be designed to be interrupted.
【００１５】この場合、測定された空気質量流量がその
まま再始動過程の決定のために使用できることは有利で
ある。In this case, it is advantageous that the measured air mass flow can be used as is for determining the restart process.
【００１６】純原理的に、λ制御は種々の方法で形成し
てもよい。Purely in principle, the λ control may be formed in various ways.
【００１７】従って例えば、λ制御は連続ＰＩＤ制御装
置として形成してもよい。この場合、所定の時間間隔に
わたり所定の値が設定値の目標値に加算されるように設
計されていることは有利である。Thus, for example, the λ control may be formed as a continuous PID controller. In this case, it is advantageous that the predetermined value is designed to be added to the setpoint target value over a predetermined time interval.
【００１８】λ制御が二位置制御装置として形成されて
いる他の実施形態において、積分部分が所定の時間間隔
だけ延長されるか又は一定に保持され、及び／又は比例
部分及び積分部分に所定の値が加算されるように設計さ
れていることは有利である。In another embodiment in which the λ control is formed as a two-position control device, the integral part is extended or kept constant for a predetermined time interval and / or a predetermined part for the proportional part and the integral part. It is advantageous that the values are designed to be added.
【００１９】本発明のその他の特徴及び利点が以下の説
明並びにいくつかの実施形態の図面から明らかである。Other features and advantages of the present invention will be apparent from the following description and drawings of some embodiments.
【００２０】[0020]
【発明の実施の形態】λ制御を有する内燃機関が図２に
略図で示されている。図２からわかるように、内燃機関
１０は吸気管２０及び排気管３０を含む。吸気管２０内
に空気質量流量計４０が配置され、該空気質量流量計４
０は空気質量流量ｍｓを測定し、これを制御回路５０に
供給する。内燃機関１０の回転速度ｎが機関１０に付属
の回転速度計により測定され、同様に制御回路５０に供
給され、該制御回路５０は空気質量流量ｍｓ及び回転速
度ｎ場合により図２には示されていない例えば機関温度
等のような測定された他の入力量から噴射時間ｔｉを求
め、該噴射時間ｔｉは噴射弁６０に与えられる。DETAILED DESCRIPTION OF THE INVENTION An internal combustion engine with λ control is shown schematically in FIG. As can be seen from FIG. 2, the internal combustion engine 10 includes an intake pipe 20 and an exhaust pipe 30. An air mass flow meter 40 is arranged in the intake pipe 20,
0 measures the air mass flow ms and supplies it to the control circuit 50. The rotational speed n of the internal combustion engine 10 is measured by a tachometer attached to the engine 10 and likewise supplied to a control circuit 50, which is shown in FIG. The injection time ti is determined from another measured input quantity, such as the engine temperature, which is not present, and the injection time ti is provided to the injection valve 60.
【００２１】排気管３０内にλセンサ７０が配置され、
該λセンサ７０は（図示されていない）触媒の手前で内
燃機関１０の空気比を測定する。λセンサ７０により測
定された空気比λは制御装置８０に供給され、該制御装
置８０は設定値ＦＲを出力し、該設定値ＦＲから既知の
ように噴射時間ｔｉが計算される。A λ sensor 70 is disposed in the exhaust pipe 30,
The λ sensor 70 measures the air ratio of the internal combustion engine 10 before the catalyst (not shown). The air ratio λ measured by the λ sensor 70 is supplied to the control device 80, which outputs a set value FR from which the injection time ti is calculated in a known manner.
【００２２】図２にλ制御回路の一例が示されている。
この場合、制御回路又はλ制御装置８０は二位置制御装
置、連続ＰＩ制御装置又はＰＩＤ制御装置として形成す
ることができる。FIG. 2 shows an example of the λ control circuit.
In this case, the control circuit or λ control device 80 can be formed as a two-position control device, a continuous PI control device or a PID control device.
【００２３】図１に二位置制御装置に対してλ制御の設
定値ＦＲの時間ｔに対する線図が略図で示されている。FIG. 1 schematically shows a diagram of the set value FR of the λ control with respect to time t for a two-position control device.
【００２４】Ｉの符号を有する設定値の時間線図は例え
ば回転速度及び負荷の関数として行われる既知のリッチ
延長に対応し、これにより触媒が特に良好な変換を示す
僅かにリッチな値へ制御を延長させることができる。The time diagram of the setpoint with the sign I corresponds, for example, to a known rich extension performed as a function of the rotational speed and of the load, whereby the catalyst is controlled to a slightly richer value which shows a particularly good conversion. Can be extended.
【００２５】λセンサ７０は、実質的にλ＝１の周りの
空気比の変化即ちλ＞１からλ＜１へのλの急変化及び
逆の変化を測定する（図１の下側にセンサ電圧により示
されている）。The λ sensor 70 measures the change in air ratio substantially around λ = 1, ie, the abrupt and reverse changes of λ from λ> 1 to λ <1 (the lower part of FIG. 1 shows the sensor). Voltage)).
【００２６】このようなλの急変化即ち制御量の急変化
は、まず設定値ＦＲの上昇又は下降する急斜面１００を
導き、この急斜面は二位置制御装置の比例部分に対応す
る。この後に既知のように積分部分１１０が続く。Such a rapid change of λ, that is, a sudden change of the control amount, firstly leads to a steep slope 100 where the set value FR rises or falls, and this steep slope corresponds to the proportional part of the two-position control device. This is followed by an integration part 110 as is known.
【００２７】この設定値ＦＲにより調節されて噴射され
た空燃比は排気管３０において値λ＝１となる。The air-fuel ratio that has been adjusted and injected according to the set value FR has a value λ = 1 in the exhaust pipe 30.
【００２８】設定値ＦＲの変化はIIの符号を有する曲線
により説明される。The change in the set value FR is described by a curve having the sign II.
【００２９】空気燃料混合物のリッチ延長を達成するた
めに、二位置制御装置８０において、リッチからリーン
への空気比の変化を形成する上昇積分部分１１０が所定
の時間間隔Δｔの間延長される。これにより、設定値Ｆ
Ｒは、噴射された空燃比のリッチ延長が形成されるよう
に変化する。To achieve a rich extension of the air-fuel mixture, in the two-position controller 80, the rising integral portion 110, which forms the change in air ratio from rich to lean, is extended for a predetermined time interval Δt. Thereby, the set value F
R changes such that a rich extension of the injected air-fuel ratio is formed.
【００３０】一定延長の代わりに、積分部分１１０の上
昇斜面を所定の時間間隔Δｔだけ更に上昇させることも
また可能である（図１において破線で示されている）。Instead of a constant extension, it is also possible to raise the rising slope of the integral part 110 further by a predetermined time interval Δt (shown in broken lines in FIG. 1).
【００３１】更に、比例部分及び積分部分に所定の比例
値が加算又は減算されあるいは比例部分が非対称に形成
されてもよく、これにより全体設定値が平均的により大
きな値をとることになる。Further, a predetermined proportional value may be added to or subtracted from the proportional portion and the integral portion, or the proportional portion may be formed asymmetrically, so that the overall set value becomes larger on average.
【００３２】設定値ＦＲの変化の値及び時間は内燃機関
１０の停止時間の関数として選択されてもよく、停止時
間は時間カウンタにより測定される。内燃機関１０が長
く停止されていればいるほど、それだけ大きくリッチ延
長が上記のように選択される。The value and the time of the change of the set value FR may be selected as a function of the stop time of the internal combustion engine 10, and the stop time is measured by a time counter. The longer the internal combustion engine 10 is stopped, the greater the rich extension is selected as described above.
【００３３】更に、上記の追加の再始動延長は、センサ
が作動可能なように高温になったときに行われるλ制御
の投入と共に終了させることができる。Further, the additional restart extension described above can be terminated with the application of the λ control performed when the sensor is hot enough to operate.
【００３４】再始動延長が、各機関制御においていずれ
にしても測定される機関温度及び／又はセンサ温度の関
数として選択されることもまた可能である。It is also possible that the restart extension is selected as a function of the measured engine temperature and / or sensor temperature in any case in each engine control.
【００３５】更に、設定値の変化の時間が、空気質量流
量の時間積分及び／又は触媒の下流側に配置されている
（図示されていない）ガイドセンサにより出力される値
の時間積分がしきい値を超えているか否かにより決定し
てもよい。Furthermore, the time of the change of the set value may be a time integral of the air mass flow and / or a time integral of the value output by a guide sensor (not shown) arranged downstream of the catalyst. The determination may be made based on whether or not the value is exceeded.
【００３６】上記の決定基準により、噴射された空気燃
料混合物のリッチ延長即ちλ制御の再始動延長が確実に
再始動過程においてのみ行われることになる。The above criterion ensures that the rich extension of the injected air-fuel mixture, ie the restart extension of the λ control, takes place only in the restart process.
【図１】燃料空気混合物のλ制御の再始動延長を有する
場合及び有しない場合の二位置制御装置におけるλ制御
の設定値の略時間線図である。FIG. 1 is a schematic time diagram of set values of λ control in a two-position control device with and without restart extension of λ control of a fuel-air mixture.
【図２】内燃機関のλ制御回路を示す概略図である。FIG. 2 is a schematic diagram showing a λ control circuit of the internal combustion engine.
１０ 内燃機関 ２０ 吸気管 ３０ 排気管 ４０ 空気質量流量計 ５０ 制御回路 ６０ 噴射弁 ７０ λセンサ ８０ λ制御装置 DESCRIPTION OF SYMBOLS 10 Internal combustion engine 20 Intake pipe 30 Exhaust pipe 40 Air mass flow meter 50 Control circuit 60 Injection valve 70 λ sensor 80 λ control device
───────────────────────────────────────────────────── フロントページの続き (72)発明者 ハインツ−ギュンター・ゲルングロス ドイツ連邦共和国 71665 ヴァイヒンゲ ン，クライストシュトラーセ ３ (72)発明者 クリストフ・ティール ドイツ連邦共和国 74074 ハイルブロン, シュヴァインスベルグシュトラーセ 56 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Heinz-Günter Gerngros, Germany 71665 Weingingen, Christstraße 3 (72) Inventor Christoph Tiel, Germany 74074 Heilbronn, Schweinsbergstrasse 56
Claims (7)
のリーン延長又はリッチ延長が形成されるように所定の
時間間隔（Δｔ）にわたりλ制御の設定値（ＦＲ）の所
定の変化が行われることを特徴とするλ制御を有する内
燃機関におけるλ制御の再始動延長方法。1. A predetermined change in the set value (FR) of the λ control over a predetermined time interval (Δt) such that a lean or rich extension of the mixture composition of the injected fuel-air mixture is formed. A method for extending λ control restart in an internal combustion engine having λ control.
停止時間が測定され、設定値（ＦＲ）の変化の値及び時
間（Δｔ）が停止時間の関数として選択されることを特
徴とする請求項１記載の方法。2. The stop time of the internal combustion engine (10) is measured by a time counter, and the value of the change of the set value (FR) and the time (Δt) are selected as a function of the stop time. The method of claim 1.
入と共に終了されることを特徴とする請求項記載１の方
法。3. The method according to claim 1, wherein the change of the set value (FR) is terminated when the λ control device is switched on.
ｔ）が機関温度及び／又はセンサ温度の関数として選択
されることを特徴とする請求項１記載の方法。4. The value of the change of the set value (FR) and the time (Δ
2. The method according to claim 1, wherein t) is selected as a function of the engine temperature and / or the sensor temperature.
が、求められた空気質量流量の時間積分の値及び／又は
触媒の下流側に配置されているガイドセンサの出力値の
関数として選択されることを特徴とする請求項１記載の
方法。5. A change time (Δt) of a set value (FR).
Is selected as a function of the value of the time integral of the determined air mass flow rate and / or the output value of a guide sensor arranged downstream of the catalyst.
形成した場合、所定の時間（Δｔ）にわたり所定の値が
設定値（ＦＲ）の目標値に加算されることを特徴とする
請求項１ないし５のいずれか一項に記載の方法。6. The method according to claim 1, wherein when the λ control device is formed as a continuous PID control device, a predetermined value is added to a target value of the set value (FR) for a predetermined time (Δt). 6. The method according to claim 5.
した場合、上昇積分部分（１１０）が所定の時間間隔だ
け延長されるか又は所定の時間間隔にわたり一定に保持
され、及び／又は比例部分及び積分部分に所定の値が加
算されることを特徴とする請求項１ないし５のいずれか
一項に記載の方法。7. If the λ control device is formed as a two-position control device, the ascending integral part (110) is extended by a predetermined time interval or kept constant over a predetermined time interval and / or a proportional part. 6. The method according to claim 1, wherein a predetermined value is added to the integral part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19728926.6 | 1997-07-07 | ||
| DE1997128926 DE19728926C1 (en) | 1997-07-07 | 1997-07-07 | Method of lambda-controlled after-start delay in an internal combustion engine with lambda control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1172036A true JPH1172036A (en) | 1999-03-16 |
Family
ID=7834871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19046298A Withdrawn JPH1172036A (en) | 1997-07-07 | 1998-07-06 | Restart extension method of lambda control in internal combustion engine with lambda control |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH1172036A (en) |
| DE (1) | DE19728926C1 (en) |
| IT (1) | IT1301785B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101186924B1 (en) * | 2004-10-14 | 2012-09-28 | 콘티넨탈 오토모티브 게엠베하 | Method for regulating the lambda value of an internal combustion engine |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10147390A1 (en) * | 2001-09-26 | 2003-04-30 | Bosch Gmbh Robert | Broadband lambda probe with improved starting behavior |
| DE10221536B4 (en) * | 2002-05-15 | 2011-05-26 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Method for controlling a working mode of an internal combustion engine |
| DE102011016639A1 (en) * | 2011-04-09 | 2012-10-11 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Control unit for fuel supply control during a cold running phase of an internal combustion engine, method for fuel supply control during a cold running phase of an internal combustion engine, computer program product, computer program and signal sequence |
| DE102011087300A1 (en) * | 2011-11-29 | 2013-05-29 | Volkswagen Ag | Method for operating an internal combustion engine and for the execution of the method set up control device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4308813A1 (en) * | 1993-03-19 | 1994-09-22 | Bosch Gmbh Robert | Control system for the fuel metering of an internal combustion engine |
| DE19545418C2 (en) * | 1995-12-06 | 1997-09-18 | Bosch Gmbh Robert | Electronic control device for metering fuel in an internal combustion engine |
-
1997
- 1997-07-07 DE DE1997128926 patent/DE19728926C1/en not_active Expired - Fee Related
-
1998
- 1998-06-23 IT ITMI981434 patent/IT1301785B1/en active IP Right Grant
- 1998-07-06 JP JP19046298A patent/JPH1172036A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101186924B1 (en) * | 2004-10-14 | 2012-09-28 | 콘티넨탈 오토모티브 게엠베하 | Method for regulating the lambda value of an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| ITMI981434A1 (en) | 1999-12-23 |
| IT1301785B1 (en) | 2000-07-07 |
| DE19728926C1 (en) | 1999-01-21 |
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| A300 | Withdrawal of application because of no request for examination |
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