DE102009000896A1 - Method for determining discharge temperature of compressor of turbocharger of e.g. petrol engine in passenger car, involves determining efficiency of compressor, and determining discharge temperature of compressor - Google Patents

Method for determining discharge temperature of compressor of turbocharger of e.g. petrol engine in passenger car, involves determining efficiency of compressor, and determining discharge temperature of compressor Download PDF

Info

Publication number
DE102009000896A1
DE102009000896A1 DE102009000896A DE102009000896A DE102009000896A1 DE 102009000896 A1 DE102009000896 A1 DE 102009000896A1 DE 102009000896 A DE102009000896 A DE 102009000896A DE 102009000896 A DE102009000896 A DE 102009000896A DE 102009000896 A1 DE102009000896 A1 DE 102009000896A1
Authority
DE
Germany
Prior art keywords
compressor
efficiency
turbocharger
discharge temperature
determining
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
Application number
DE102009000896A
Other languages
German (de)
Other versions
DE102009000896B4 (en
Inventor
Simon Petrovic
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.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
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 Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Priority to DE102009000896.9A priority Critical patent/DE102009000896B4/en
Publication of DE102009000896A1 publication Critical patent/DE102009000896A1/en
Application granted granted Critical
Publication of DE102009000896B4 publication Critical patent/DE102009000896B4/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D23/00—Controlling engines characterised by their being supercharged
    • 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
    • F02D41/0002—Controlling intake air
    • F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
    • 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
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1446—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being exhaust temperatures
    • F02D41/1447—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being exhaust temperatures with determination means using an estimation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • 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
    • F02D2041/1433—Introducing closed-loop corrections characterised by the control or regulation method using a model or simulation of the system
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)

Abstract

The method involves determining the efficiency of a compressor from the speed and an additional operating parameter i.e. compressor pressure ratio, of a turbocharger by a predetermined two-dimensional function of the efficiency. The discharge temperature of the compressor is determined from the inlet temperature of the compressor, the efficiency of the compressor and the compressor pressure ratio. The determined discharge temperature is constantly compared with the stored critical temperature to limit or lower the discharge temperature.

Description

Die Erfindung betrifft ein Verfahren zur Ermittlung der Auslaßtemperatur des Kompressors eines Turboladers eines Verbrennungsmotors, wobei die Auslaßtemperatur aus der Einlaßtemperatur des Kompressors, dem Wirkungsgrad des Kompressors und dem Kompressordruckverhältnis ermittelt wird, wobei der Wirkungsgrad des Kompressors mittels einer vorgegebenen zweidimensionalen Funktion des Wirkungsgrades von der Drehzahl und eines weiteren Betriebsparameters des Turboladers ermittelt wird, gemäß dem Oberbegriff des Patentanspruchs.The The invention relates to a method for determining the outlet temperature the compressor of a turbocharger of an internal combustion engine, wherein the Outlet temperature from the inlet temperature of the compressor, the efficiency of the compressor and the compressor pressure ratio is determined, the efficiency of the compressor by means of a given two-dimensional function of the efficiency of the Speed and another operating parameter of the turbocharger is determined according to the preamble of the claim.

Turbolader sind bei Kraftfahrzeugen mit Benzin- oder Dieselmotoren heute sehr verbreitet. Aufgrund von Kundenbedarf nach mehr Motorleistung laufen Turbolader häufig an ihren Druck- und Temperaturgrenzen. Ein Problem dabei sind mögliche Gewährleistungsansprüche, da in manchen Fällen eine sog. Kompressorverkokung auftreten kann, wenn die Auslaßtemperatur des Kompressors zu hoch wird (z. B. > 180°C, wobei diese Temperatur kalibrierbar ist), wodurch der Auslaßdruck des Kompressors vermindert wird und die Auslaßtemperatur des Kompressors in einem positiven Rückkopplungszyklus vergrößert wird. Die Auslaßtemperatur muß daher genau überwacht werden, um gegebenenfalls eine Begrenzung der Motordrehzahl oder Kraftstoffzufuhr zu aktivieren, durch welche die Auslaßtemperatur des Kompressors wieder abgesenkt wird.turbocharger are very popular in motor vehicles with gasoline or diesel engines today common. Due to customer demand for more engine power running Turbochargers often at their pressure and temperature limits. A problem here are possible warranty claims, because in some cases a so-called compressor coking occur can if the outlet temperature of the compressor too high is (eg> 180 ° C, this temperature being calibratable), whereby the outlet pressure the compressor is reduced and the outlet temperature of the compressor in a positive feedback cycle is enlarged. The outlet temperature must therefore be closely monitored, if necessary to activate a limitation of the engine speed or fuel supply, through which the outlet temperature of the compressor again is lowered.

Die US 7 143 580 B2 offenbart ein Verfahren zur Ermittlung der Auslaßtemperatur des Kompressors eines Turboladers gemäß dem Oberbegriff des Patentanspruches, wobei der weitere Betriebsparameter, auf dessen Basis der Wirkungsgrad des Kompressors ermittelt wird, der Massenluftstrom durch den Kompressor ist, welcher zusammen mit der Drehzahl des Turboladers eine zweidimensionale Kalibrierungsfunktion für das Kompressordruckverhältnis bildet.The US Pat. No. 7,143,580 B2 discloses a method for determining the outlet temperature of the compressor of a turbocharger, wherein the further operating parameter, on the basis of which the efficiency of the compressor is determined, the mass flow of air through the compressor, which together with the speed of the turbocharger, a two-dimensional calibration function for forms the compressor pressure ratio.

Sensoren für den Massenluftstrom können aber große Fehler aufweisen, insbesondere bei Stadtfahrbedingungen, sind nicht ausfallsicher und ferner relativ aufwendig.sensors but for the mass air flow can be large Have errors, especially in city driving conditions, are not fail-safe and also relatively expensive.

Der Erfindung liegt die Aufgabe zu Grunde, die Auslaßtemperatur des Kompressors eines Turboladers eines Verbrennungsmotors auf eine genauere, robustere und einfachere Weise zu ermitteln.Of the Invention is based on the object, the outlet temperature the compressor of a turbocharger of an internal combustion engine on a more accurate, robust, and easier way to determine.

Diese Aufgabe wird bei einem gattungsgemäßen Verfahren dadurch gelöst, dass der weitere Betriebsparameter, auf dessen Basis der Wirkungsgrad des Kompressors ermittelt wird, das Kompressordruckverhältnis ist.These Task is in a generic method solved by the fact that the further operating parameters, on the basis of which the efficiency of the compressor is determined, the Compressor pressure ratio is.

Aus dem Kompressordruckverhältnis und der Drehzahl des Turboladers kann der für die Temperaturermittlung benötigte Wirkungsgrad des Kompressors genauer und zuverlässiger ermittelt werden als im Stand der Technik. Der Wirkungsgrad kann hierdurch weiterhin schneller als bisher ermittelt werden, da das Kompressordruckverhältnis sehr schnell gemessen werden kann. Auch sind Sensoren zur Messung des Kompressordruckverhältnisses, welches der Quotient von Auslaß- zu Einlaßdruck ist, in Form von Umgebungs- und Ladedrucksensoren normalerweise in einem PKW bereits vorhanden. Außerdem ist die benötigte zweidimensionale Funktion des Wirkungsgrades von der Drehzahl und dem Kompressordruckverhältnis meist schon in Form einer Karte oder Tabelle in der Motorsteuereinheit gespeichert. Konventionelle Turbolader-Karten oder -Tabellen konzentrieren sich zwar eher auf die Vollastbereiche des Motors, doch kann man diese Karten durch erweiterte und nötigenfalls genauere Karten oder Tabellen ersetzen. Dieser eher geringe Aufwand wird durch den eingesparten Sensor für den Massenluftstrom mehr als wettgemacht.Out the compressor pressure ratio and the speed of the turbocharger can be used for the temperature determination Efficiency of the compressor more accurate and reliable be determined as in the prior art. The efficiency can thereby continue to be determined faster than previously, because the compressor pressure ratio can be measured very quickly. Also are sensors for measurement the compressor pressure ratio, which is the quotient from outlet to inlet pressure, in the form of ambient and boost pressure sensors usually already present in a car. In addition, the required two-dimensional function the efficiency of the speed and the compressor pressure ratio usually already in the form of a map or table in the engine control unit saved. Concentrate on conventional turbocharger maps or tables Although rather on the full load of the engine, but you can these cards by advanced and, if necessary, more accurate Replace cards or tables. This rather small effort is through the saved sensor for the mass air flow more than compensated.

Vorteilhaft wird die Auslaßtemperatur des Kompressors eines Turboladers nach der folgenden Gleichung ermittelt:

Figure 00030001
Advantageously, the outlet temperature of the compressor of a turbocharger is determined according to the following equation:
Figure 00030001

Darin sind

T0
Auslaßtemperatur des Kompressors [K]
Ti
Einlaßtemperatur des Kompressors [K]
P0
Auslaßdruck des Kompressors [bar]
Pi
Einlaßdruck des Kompressors [bar]
P0/Pi
Kompressordruckverhältnis [–]
ηTS
Wirkungsgrad Total-zu-Statisch des Kompressors [0–1]
γ
Isentropenkoeffizient [–]
Are in it
T 0
Outlet temperature of the compressor [K]
Ti
Inlet temperature of the compressor [K]
P 0
Outlet pressure of the compressor [bar]
pi
Inlet pressure of the compressor [bar]
P 0 / Pi
Compressor pressure ratio [-]
ηTS
Efficiency Total-to-static of the compressor [0-1]
γ
Isentropic coefficient [-]

Die obige Gleichung entspricht der in der US 7 143 580 B2 angegebenen Gleichung für die Kompressorauslaßtemperatur mit dem Unterschied, dass gemäß der Erfindung kein Korrekturfaktor im Zähler der rechten Seite der Gleichung vonnöten ist und dass nicht der Wirkungsgrad Total-zu-Total, sondern der Wirkungsgrad Total-zu-Statisch des Kompressors verwendet wird. Letzterer ist eine Funktion der (nötigenfalls korrigierten) gemessenen Turboladergeschwindigkeit und des Kompressordruckverhältnisses: ηTS = f(NCcorr, P0/Pi) The above equation corresponds to that in FIG US Pat. No. 7,143,580 B2 given equation for the compressor outlet temperature with the difference that according to the invention no correction factor in the counter of the right side of the equation is needed and that not the efficiency total-to-total, but the efficiency total-to-static of the compressor is used. The latter is a function of the (corrected if necessary) measured turbocharger speed and the compressor pressure ratio: η TS = f (NC corr , P 0 / P i )

Darin ist NCcorr die geeignet korrigierte Drehzahl des Turboladers. Eine derartige Funktion ist z. B. als Karte oder Tabelle in dem elektronischen Steuergerät des Motors gespeichert:

Figure 00030002
mit Tref als Kompressorreferenztemperatur.In it NCcorr is the suitably corrected speed of the turbocharger. Such a function is z. B. stored as a map or table in the electronic control unit of the engine:
Figure 00030002
with T ref as the compressor reference temperature.

Die Erfindung wird nachfolgend anhand der Zeichnungen beispielhaft näher erläutert.The The invention will be more closely understood by way of example with reference to the drawings explained.

Deren einzige Figur zeigt Wirkungsgrade des Kompressors eines typischen Turboladers als Isolinien (Punkte mit gleichem Wirkungsgrad) auf einer zweidimensionalen Karte, in der die Drehzahl des Turboladers horizontal und das Kompressordruckverhältnis vertikal aufgetragen sind. Der Ort des maximalen Wirkungsgrades ist mit einem Kreis markiert.their single figure shows efficiencies of the compressor of a typical Turbocharger as isolines (points with the same efficiency) on a two-dimensional map in which the speed of the turbocharger horizontally and the compressor pressure ratio applied vertically are. The location of the maximum efficiency is marked with a circle.

Im Betrieb des Turboladers wird aus einem für diesen Turbolader bekannten Diagramm wie in der Figur oder einer entsprechenden Tabelle der aktuelle Wirkungsgrad ausgelesen, der zu der mit einem Drehzahlmesser gemessenen und nötigenfalls korrigierten aktuellen Drehzahl des Turboladers und zu dem mit Sensoren für den Umgebungs- und Ladedruck gemessenen aktuellen Druckverhältnis gehört.in the Operation of the turbocharger will be one for this turbocharger known diagram as in the figure or a corresponding table The current efficiency read out to that with a tachometer Measured and corrected if necessary actual speed of the turbocharger and to which with sensors for the ambient and boost pressure measured current pressure ratio heard.

Sodann wird die Auslaßtemperatur des Turboladers nach der weiter oben angegebenen Gleichung aus dem ermittelten aktuellen Wirkungsgrad des Kompressors, dem aktuellen Kompressordruckverhältnis und der aktuellen Einlaßtemperatur des Kompressors ermittelt. Die Einlaßtemperatur des Kompressors kann entweder mit einem (normalerweise eher langsamen) Sensor gemessen werden oder mit ausreichender Genauigkeit mittels eines schnellen Algorithmus geschätzt werden.thereupon the outlet temperature of the turbocharger continues after above equation from the determined current efficiency of Compressor, the current compressor pressure ratio and the current inlet temperature of the compressor determined. The inlet temperature of the compressor can either with a (usually rather slow) sensor can be measured or with sufficient accuracy by means of a fast algorithm to be appreciated.

Die auf diese Weise ermittelte Auslaßtemperatur des Kompressors wird laufend mit einer gespeicherten kritischen Temperatur verglichen, welche auch eine Funktion von irgendwelchen Betriebsparametern des Turboladers sein kann, und bei Überschreitung der kritischen Temperatur wird zum Beispiel die Motordrehzahl oder Kraftstoffzufuhr begrenzt, um die Auslaßtemperatur des Kompressors zu begrenzen bzw. wieder zu senken.The determined in this way outlet temperature of the compressor is constantly compared to a stored critical temperature, which is also a function of any operating parameters of the Turbocharger can be, and when exceeding the critical Temperature is, for example, the engine speed or fuel supply limited to limit the outlet temperature of the compressor or lower again.

ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • - US 7143580 B2 [0003, 0010] US 7143580 B2 [0003, 0010]

Claims (1)

Verfahren zur Ermittlung der Auslaßtemperatur des Kompressors eines Turboladers eines Verbrennungsmotors, wobei die Auslaßtemperatur aus der Einlaßtemperatur des Kompressors, dem Wirkungsgrad des Kompressors und dem Kompressordruckverhältnis ermittelt wird, wobei der Wirkungsgrad des Kompressors mittels einer vorgegebenen zweidimensionalen Funktion des Wirkungsgrades von der Drehzahl und einem weiteren Betriebsparameter des Turboladers ermittelt wird, dadurch gekennzeichnet, dass der weitere Betriebsparameter, auf dessen Basis der Wirkungsgrad des Kompressors ermittelt wird, das Kompressordruckverhältnis ist.A method for determining the outlet temperature of the compressor of a turbocharger of an internal combustion engine, wherein the outlet temperature from the inlet temperature of the compressor, the efficiency of the compressor and the compressor pressure ratio is determined, the efficiency of the compressor by means of a given two-dimensional function of the efficiency of the speed and another operating parameter the turbocharger is determined, characterized in that the further operating parameter, on the basis of which the efficiency of the compressor is determined, the compressor pressure ratio.
DE102009000896.9A 2009-02-16 2009-02-16 Procedure for determining the outlet temperature of a turbocharger Active DE102009000896B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102009000896.9A DE102009000896B4 (en) 2009-02-16 2009-02-16 Procedure for determining the outlet temperature of a turbocharger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009000896.9A DE102009000896B4 (en) 2009-02-16 2009-02-16 Procedure for determining the outlet temperature of a turbocharger

Publications (2)

Publication Number Publication Date
DE102009000896A1 true DE102009000896A1 (en) 2010-08-19
DE102009000896B4 DE102009000896B4 (en) 2022-11-24

Family

ID=42338431

Family Applications (1)

Application Number Title Priority Date Filing Date
DE102009000896.9A Active DE102009000896B4 (en) 2009-02-16 2009-02-16 Procedure for determining the outlet temperature of a turbocharger

Country Status (1)

Country Link
DE (1) DE102009000896B4 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7143580B2 (en) 2004-10-22 2006-12-05 Detroit Diesel Corporation Virtual compressor outlet temperature sensing for charge air cooler overheating protection

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008044196A1 (en) 2008-11-28 2010-06-02 Ford Global Technologies, LLC, Dearborn Method for evaluating exhaust gas temperature in motor vehicle, involves utilizing turbocharger system with exhaust-gas turbine in motor vehicle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7143580B2 (en) 2004-10-22 2006-12-05 Detroit Diesel Corporation Virtual compressor outlet temperature sensing for charge air cooler overheating protection

Also Published As

Publication number Publication date
DE102009000896B4 (en) 2022-11-24

Similar Documents

Publication Publication Date Title
DE102014201947B3 (en) Method and device for determining a charge air mass flow
DE102010042736B4 (en) Method for quantity compensation control in an internal combustion engine
DE102014222335B4 (en) Device and method for detecting an operating pressure of a fluid pump for a motor vehicle
DE102011090059A1 (en) Method for specifying a malfunction of exhaust gas recirculation of an internal combustion engine of a motor vehicle and corresponding diagnostic device
EP1645853A2 (en) Method of testing the functionig of a level sensor
DE102015207710B4 (en) Method for increasing the accuracy of a sensorless pressure detection
DE102006043341B4 (en) Method for determining the ethanol content of the fuel in a motor vehicle
EP3390130B1 (en) System for determining a filling level
DE102008034323B4 (en) Method and device for determining the pressure before the compressor of a turbocharger for determining the Verchschmmutzungsgrades an air filter, which is arranged in front of the compressor of the turbocharger.
DE102014220522B4 (en) Determination of a corrected pressure signal
DE102008043130A1 (en) Method for operating fuel supply system of internal combustion engine, involves supplying fuel in fuel line from electric fuel pump, where pressure in fuel line or flow rate of electric fuel pump, is controlled or regulated to target-value
DE102009000896A1 (en) Method for determining discharge temperature of compressor of turbocharger of e.g. petrol engine in passenger car, involves determining efficiency of compressor, and determining discharge temperature of compressor
DE102014210776A1 (en) Method for determining a diagnostic parameter for a vehicle diagnosis of a motor vehicle
DE102013213310B4 (en) Process for controlling internal combustion engines with variable valve control
DE102007036105B4 (en) Method and device for detecting modifications relating to a boost pressure sensor of a motor vehicle
DE102012018785A1 (en) Method for diagnosis of actuator of e.g. bypass valve in exhaust gas duct of supercharged internal combustion engine, involves determining time derivatives of actuator position and exhaust gas pressure signal for diagnosis of actuator
DE102012210708A1 (en) Method for determining ramp factor, for correction of time course of fuel injection into injector of engine of motor car, involves imaging correction factor during heating engine over time course of ramp based on correction factor
DE102016012019A1 (en) Method for determining combustion misfires of an internal combustion engine
DE102016216473B4 (en) Method for operating an exhaust gas recirculation device
DE102018201946A1 (en) Method and device for checking the plausibility of the measured values of a humidity sensor
DE102018222364A1 (en) Control device and method for regulating a volume flow of a fluid in a drive train of a motor vehicle
EP3631398A1 (en) Method for monitoring a cylinder pressure sensor
DE102009000292A1 (en) Method for producing control or diagnostic variable for turbocharger, involves providing variable geometry to turbocharger in internal combustion engine, where control or diagnostic variable is based on turbine output of turbocharger
DE102008033194B4 (en) Method and device for the detection of gas fractions in a fluid system of a vehicle
DE102008059697A1 (en) Method for determining occupancy rate of exhaust gas after treatment plant, particularly particle filter, in exhaust section of internal combustion engine, involves determining pressure value within exhaust section

Legal Events

Date Code Title Description
R012 Request for examination validly filed
R016 Response to examination communication
R018 Grant decision by examination section/examining division
R082 Change of representative

Representative=s name: BONSMANN - BONSMANN - FRANK PATENTANWAELTE, DE

R084 Declaration of willingness to licence
R020 Patent grant now final