DE19841539B4 - Arrangement for detecting knocking combustion in cylinders of internal combustion engines - Google Patents
Arrangement for detecting knocking combustion in cylinders of internal combustion engines Download PDFInfo
- Publication number
- DE19841539B4 DE19841539B4 DE19841539A DE19841539A DE19841539B4 DE 19841539 B4 DE19841539 B4 DE 19841539B4 DE 19841539 A DE19841539 A DE 19841539A DE 19841539 A DE19841539 A DE 19841539A DE 19841539 B4 DE19841539 B4 DE 19841539B4
- Authority
- DE
- Germany
- Prior art keywords
- filter
- integrator
- cylinders
- combustion
- knocking
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/027—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions using knock sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
- F02P5/15—Digital data processing
- F02P5/152—Digital data processing dependent on pinking
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
- G01L23/221—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
- G01L23/221—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines
- G01L23/225—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines circuit arrangements therefor
-
- 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
- F02D2041/1432—Controller structures or design the system including a filter, e.g. a low pass or high pass filter
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Ignition Timing (AREA)
Abstract
Anordnung
zum Erfassen klopfender Verbrennung in Zylindern von Verbrennungsmotoren,
die Bestandteil eines die Betriebsparameter des Verbrennungsmotors
einstellenden Steuergerätes
ist und folgenden Aufbau aufweist:
– ein oder mehrere schwingungsaufnehmende
Klopfsensoren sind jeweils einem oder mehreren Zylindern zugeordnet,
– von einem
dem Klopfsensor nachgeschalteten, regelbaren Verstärker sind
die Signale des oder der Klopfsensoren unter Zwischenschalten eines
Filters und eines Gleichrichters einem Integrator angeschlossen,
– in einem
regelbaren oder festen Bereich eines jeweiligen Verbrennungsablaufes
eines Zylinders ist der Integrator mittels eines Signals aus dem
Rechner des Steuergerätes wirksam
geschaltet,
– der
Filter weist eine feste oder einstellbare Mittelfrequenz auf,
– das jeweilige
Integrationsergebnis einer klopfenden Verbrennung ist einem Regelkreis
des Steuergerätes
angeschlossen und löst
in diesem Änderungen
von Betriebsparametern zum Abstellen des Klopfens für den jeweiligen
Zylinder aus,
dadurch gekennzeichnet,
dass der dem Integrator
(6) vorgeschaltete Filter (4) ein Bandpassfilter mit mindestens
einer Güte
2 ist...Arrangement for detecting knocking combustion in cylinders of internal combustion engines, which is part of a control device adjusting the operating parameters of the internal combustion engine and has the following structure:
One or more vibration-absorbing knock sensors are each assigned to one or more cylinders,
From a controllable amplifier connected downstream of the knock sensor, the signals of the knock sensor or sensors are connected to an integrator with the interposition of a filter and a rectifier,
In an adjustable or fixed region of a respective combustion cycle of a cylinder, the integrator is effectively activated by means of a signal from the computer of the control device,
The filter has a fixed or adjustable center frequency,
The respective integration result of a knocking combustion is connected to a control circuit of the control unit and triggers in this change of operating parameters for stopping the knocking for the respective cylinder,
characterized,
in that the filter (4) upstream of the integrator (6) is a bandpass filter with at least one quality 2 ...
Description
Die Erfindung betrifft eine Anordnung zum Erfassen klopfender Verbrennung in Zylindern von Verbrennungsmotoren unter Anwendung eines Schwingungen aufnehmenden Klopfsensors gemäß dem Oberbegriff des Patentanspruches.The The invention relates to an arrangement for detecting knocking combustion in cylinders of internal combustion engines using vibrations receiving knock sensor according to the preamble of the claim.
Vorbekannt ist eine gattungsgemäße Anordnung zur Klopfregelung aus der DE-Schrift – VDI-Berichte Nr. 515, 1984, Seite 51 bis 54, in der sie im Zusammenwirken mit einer elektronischen Kennfeldzündung beschrieben ist.previously known is a generic arrangement to knock control from the DE-font - VDI reports No. 515, 1984, Pages 51 to 54, in which they interact with an electronic Mapped ignition is described.
Von einem Schwingungen aufnehmenden Klopfsensor am Motor werden die in einem regelbaren oder festen Bereich eines jeweiligen Verbrennungsablaufes eines Zylinders erfassten Signale einem regelbaren Verstärker eingangsseitig zugeführt. Die verstärkten Signale des oder der Klopfsensoren werden unter Zwischenschalten eines Filters und eines Gleichrichters einem Integrator angeschlossen. Das Integrationsergebnis einer klopfenden Verbrennung ist einem Regelkreis eines Motorsteuergerätes angeschlossen und löst in diesem Änderungen von Betriebsparametern zum Abstellen des Klopfens für den jeweiligen Zylinder oder die Zylinder aus. Diese seit vielen Jahren vorbekannte und angewandte Anordnung zum Erfassen klopfender Verbrennung in Zylindern weist den Nachteil auf, dass Klopfsignale nicht sicher aus dem Spektrum noch anderer bei der Verbrennung bzw. dem Motorbetrieb auftretenden Schwingungen, den Hintergrundgeräuschen des Motors, selektiert werden können.From a vibration receiving knock sensor on the engine are the in a controllable or fixed area of a respective combustion process a cylinder detected signals a controllable amplifier input side fed. The increased Signals of the knock sensor (s) are interposed a filter and a rectifier connected to an integrator. The Integration result of a knocking combustion is a control loop an engine control unit connected and solve in this changes of operating parameters for stopping the knocking for each Cylinder or cylinders out. This previously known for many years and applied arrangement for detecting knocking combustion in cylinders has the disadvantage that knock signals are not safe from the spectrum still other vibrations occurring during combustion or engine operation, the background noise of the engine, can be selected.
Selbst die Anwendung einer wählbaren Mittenfrequenz- und Bandbreiteneinstellung konnten diesen Nachteil nicht vollständig beheben.Even the application of a selectable Center frequency and bandwidth adjustment could overcome this disadvantage not completely remedy.
Der Erfindung liegt die Aufgabe zugrunde, bei gattungsgemäßen Anordnungen die spezifischen Klopfsignale aus dem Spektrum anderer von der Verbrennung bzw. den mechanischen Vorgängen im Motor ausgelösten Schwingungen sicher zu selektieren.Of the Invention is based on the object in generic arrangements the specific knock signals from the spectrum of others from the combustion or the mechanical processes triggered in the engine Safely selecting vibrations.
Erfindungsgemäß wurde diese Aufgabe durch die im kennzeichnenden Teil der Ansprüche beschriebene Kennung des jeweils die Signale der Klopfsensoren selektierenden Filters vor deren Integration erreicht.According to the invention was this object by the described in the characterizing part of the claims Identification of each of the signals of the knock sensors selecting Achieved filters before their integration.
Mittels einer hohen Flankensteilheit des Filters werden in der Anordnung Signale benachbarter Frequenzen außerhalb des um die Mittenfrequenz ungedämpften Bereiches wirksam unterdrückt und Signale von klopfenden Verbrennungen sicherer erfasst.through a high edge steepness of the filter are in the arrangement Signals of adjacent frequencies outside of the mid-frequency undamped area effectively suppressed and signals of knocking burns detected more secure.
Dies ist besonders bei Anwendung nur eines Klopfsensors für alle Zylinder eines Verbrennungsmotors von Bedeutung, weil die Übertragung der Klopfschwingungen und Schwingungen von mechanischen Vorgängen der einzelnen Zylinder zum Klopfsensor unterschiedlich ist.This is especially when using only one knock sensor for all cylinders an internal combustion engine of importance because the transmission the tapping vibrations and vibrations of mechanical processes of the individual cylinder to the knock sensor is different.
Anhand einer Zeichnung wird ein Ausführungsbeispiel der Erfindung nachfolgend beschrieben.Based a drawing is an embodiment of the invention described below.
Es zeigen: It demonstrate:
In
Die
am Ausgang des Verstärkers
Das
Signal des jeweiligen Integrationsergebnisses IK oder
In – siehe
Bekannte
Filter
Eine
erfindungsgemäße Ausführung – siehe
- – Es
wird überwiegend
das Frequenzband der Klopfschwingungen FK,
entsprechend welchem die Mittenfrequenz des Filters
4 eingestellt ist, für das Integrationsergebnis wirksam – siehe2c –. - – Schwingungsvorgänge anderer
Art Fm – siehe
2a – mit hoher Amplitude und dem Frequenzband der Klopfschwingungen benachbarten Frequenzen werden unterdrückt und damit für die Integrationsergebnisse Fik, Fin wenig wirksam.
- - It becomes predominantly the frequency band of the knocking vibrations F K , corresponding to which the center frequency of the filter
4 is set, effective for the integration result - see2c -. - - Oscillations of a different kind F m - see
2a - With high amplitude and the frequency band of the knocking frequencies adjacent frequencies are suppressed and thus for the integration results F ik , F in little effective.
Die
Auswirkungen vorbeschriebener Ausführung sind bei Gegenüberstellung
der Diagramme
Gegenüber üblicher
Bemessung des Filters
Liegen
Schwingungsvorgänge
anderer Art Fm mit hoher Amplitude jedoch
deutlich oberhalb des Frequenzbandes der Klopfschwingungen FK vor, kann der Filter
In
Erkennbar
ist eine weitgehende Nivellierung der Referenzspannung URP aller Zylinder Z1 bis
Z4 trotz unterschiedlich vorhandener bzw.
zum Klopfsensor
Damit ist es möglich, Klopfschwingungen von allen Zylindern Z1 bis Z4 sicherer zu erfassen. Für alle Zylinder des Motors ergibt sich ein höheres Verhältnis der Integrationsergebnisse IK und In von jeweils klopfender und normaler Verbrennung, als das bei vorbekannter Filterbemessung.This makes it possible to more reliably detect knocking vibrations of all cylinders Z 1 to Z 4 . For all cylinders of the engine results in a higher ratio of the integration results I K and I n of each knocking and normal combustion, than that in previously known filter design.
Die erfindungsgemäße Lösung gestattet somit, einen wirtschaftlichen Motorbetrieb in der Nähe der Klopfgrenze mit höherer Sicherheit für alle Zylinder einzustellen.The Solution according to the invention allowed thus, economic engine operation near the knock limit with higher Security for to adjust all cylinders.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19841539A DE19841539B4 (en) | 1998-09-11 | 1998-09-11 | Arrangement for detecting knocking combustion in cylinders of internal combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19841539A DE19841539B4 (en) | 1998-09-11 | 1998-09-11 | Arrangement for detecting knocking combustion in cylinders of internal combustion engines |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19841539A1 DE19841539A1 (en) | 2000-03-16 |
DE19841539B4 true DE19841539B4 (en) | 2005-03-17 |
Family
ID=7880581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19841539A Expired - Fee Related DE19841539B4 (en) | 1998-09-11 | 1998-09-11 | Arrangement for detecting knocking combustion in cylinders of internal combustion engines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19841539B4 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3137016C2 (en) * | 1981-09-17 | 1985-01-03 | Robert Bosch Gmbh, 7000 Stuttgart | Device for detecting knocking of an internal combustion engine |
US4637245A (en) * | 1984-06-29 | 1987-01-20 | Mitsubishi Denki Kabushiki Kaisha | Knock deriving apparatus for internal combustion engines |
DE3523017C2 (en) * | 1984-06-29 | 1988-03-17 | Nissan Motor Co., Ltd., Yokohama, Kanagawa, Jp | |
DE3813932C2 (en) * | 1987-04-30 | 1991-08-22 | Mitsubishi Denki K.K., Tokio/Tokyo, Jp |
-
1998
- 1998-09-11 DE DE19841539A patent/DE19841539B4/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3137016C2 (en) * | 1981-09-17 | 1985-01-03 | Robert Bosch Gmbh, 7000 Stuttgart | Device for detecting knocking of an internal combustion engine |
US4637245A (en) * | 1984-06-29 | 1987-01-20 | Mitsubishi Denki Kabushiki Kaisha | Knock deriving apparatus for internal combustion engines |
DE3523017C2 (en) * | 1984-06-29 | 1988-03-17 | Nissan Motor Co., Ltd., Yokohama, Kanagawa, Jp | |
DE3813932C2 (en) * | 1987-04-30 | 1991-08-22 | Mitsubishi Denki K.K., Tokio/Tokyo, Jp |
Non-Patent Citations (1)
Title |
---|
VDI-Berichte Nr. 515, 1984, S.51-54 * |
Also Published As
Publication number | Publication date |
---|---|
DE19841539A1 (en) | 2000-03-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE4028131C2 (en) | Misfire detection method in an internal combustion engine | |
DE10017749B4 (en) | System for detecting misfire in internal combustion engines | |
DE3133703A1 (en) | "DEVICE FOR DETECTING KNOCKING IN INTERNAL COMBUSTION ENGINES" | |
WO1993020424A1 (en) | Method and device for detecting knocking in an internal-combustion engine | |
DE3336028A1 (en) | DEVICE FOR INFLUENCING CONTROL SIZES OF AN INTERNAL COMBUSTION ENGINE | |
DE4006992C2 (en) | Knock suppression device for internal combustion engines | |
DE2918420A1 (en) | IC engine knock detector circuit for capacitive sensor - compares filtered and unfiltered demodulator outputs and requires no tuning | |
DE3211644A1 (en) | DEVICE FOR DETECTING THE FAILURE OF A SENSOR | |
DE3026097A1 (en) | CONTROL DEVICE FOR CONTROL SIZES OF AN INTERNAL COMBUSTION ENGINE | |
DE3200529A1 (en) | ANTI-BLOCKING SYSTEM | |
EP0708883B1 (en) | Device for detecting a pulsating quantity | |
DE3044745C2 (en) | ||
DE19841539B4 (en) | Arrangement for detecting knocking combustion in cylinders of internal combustion engines | |
DE102017220129B4 (en) | Method and device for knock control of an internal combustion engine | |
DE4142068C2 (en) | Device for detecting the knock intensity of an engine | |
EP0429819B1 (en) | Device for measuring a periodically fluctuating variable in an internal combustion engine | |
WO2016206876A1 (en) | Method for analysing a signal and apparatus for carrying out the method | |
DE3937222C2 (en) | ||
DE3031511A1 (en) | METHOD FOR DETECTING THE KNOCKING OF AN INTERNAL COMBUSTION ENGINE AND DEVICE FOR IMPLEMENTING THE METHOD | |
EP0745836B1 (en) | Device for producing a synthetic signal for testing knocking control functions | |
DE3128027C2 (en) | ||
EP0477305B1 (en) | Knock-detection circuit arrangement | |
DE3404019C2 (en) | ||
DE102014223070A1 (en) | Method for conditioning a signal of a combustion chamber pressure sensor | |
DE102010034459B4 (en) | Method and device for detecting knocking burns during operation of an internal combustion engine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8127 | New person/name/address of the applicant |
Owner name: IAV GMBH INGENIEURGESELLSCHAFT AUTO UND VERKEHR, 1 |
|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |