DE4013751A1 - Electronic control equipment for fuel injection of diesel engines - has sensors to measure exhaust emissions, esp. particulates and nitrogen oxide(s) - Google Patents

Electronic control equipment for fuel injection of diesel engines - has sensors to measure exhaust emissions, esp. particulates and nitrogen oxide(s)

Info

Publication number
DE4013751A1
DE4013751A1 DE19904013751 DE4013751A DE4013751A1 DE 4013751 A1 DE4013751 A1 DE 4013751A1 DE 19904013751 DE19904013751 DE 19904013751 DE 4013751 A DE4013751 A DE 4013751A DE 4013751 A1 DE4013751 A1 DE 4013751A1
Authority
DE
Germany
Prior art keywords
diesel engines
electronic control
exhaust emissions
esp
particulates
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Withdrawn
Application number
DE19904013751
Other languages
German (de)
Inventor
Werner Schrimpf
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19904013751 priority Critical patent/DE4013751A1/en
Publication of DE4013751A1 publication Critical patent/DE4013751A1/en
Withdrawn legal-status Critical Current

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
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1466—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 a soot concentration or content
    • 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
    • F02D41/146—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 an NOx content or concentration
    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0406—Intake manifold pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/32—Air-fuel ratio control in a diesel engine

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)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

The equipment incorporates sensors to measure exhaust emissions, esp. particulates and nitrogen oxides (NOX), in addn. to devices for measuring the throttle pedal position, engine speed, temp. and pressure. ADVANTAGE - The equipment controls the contents of the exhaust more accurately. It compensates for a badly-maintained engine. The equipment warns the driver when exhaust emissions deteriorate.

Description

Stand der TechnikState of the art

Zur Regelung der Einspritzanlage moderner Dieselmotoren werden in zunehmenden Maße elektronische Regelanlagen verwendet. Aus Fahrpedalstellung (bei Kraftfahrzeugdieselmotoren), Drehzahl und sonstigen Korrekturgrößen errechnet der Steuerrechner in Verbindung mit den in Speichern abgelegten Kennfeldern die Solleinspritzmenge.To control the injection system of modern diesel engines electronic control systems are increasingly used. From accelerator pedal position (for automotive diesel engines), speed and other correction quantities are calculated by the control computer in connection with the maps stored in memory the Target injection quantity.

Durch die elektronische Regelung sind eine Reihe weiterer Funktionen darstellbar, z. B.Due to the electronic regulation there are a number of others Functions can be represented, e.g. B.

  • - frei wählbare Vollastcharakteristik- freely selectable full-load characteristic
  • - Korrekturen aufgrund gemessener Luft-, Kraftstoff- und Wasser­ temperatur- Corrections based on measured air, fuel and water temperature
  • - Geschwindigkeitsregelung- cruise control
  • - u. a. m.- u. a. m.

Abb. 1 sowie Abb. 2 stellen das Schema von elektronischen Regelanlagen für Reiheneinspritzpumpen bzw. Verteilereinspritzpumpen dar. Fig. 1 and Fig. 2 show the diagram of electronic control systems for in-line injection pumps or distributor injection pumps.

Kritik am Stand der TechnikCriticism of the state of the art

Die ständige Verschärfung von Abgas- und Verbrauchsgrenzwerten erfordert eine weitere Verbesserung der Regeleinrichtungen.The constant tightening of exhaust and consumption limit values requires further improvement of the control facilities.

Einen Überblick über die zunehmend strengere Auslegung der Abgasgrenzwerte für Dieselmotoren in den USA zeigt Abb. 3. Fig. 3 shows an overview of the increasingly stringent design of exhaust gas limits for diesel engines in the USA.

Bei Dieselmotoren werden insbesondere die Emissionen vonIn the case of diesel engines, the emissions of

  • - Partikeln (Ruß), da im Verdacht kanzerogen zu wirken- Particles (soot) as suspected to be carcinogenic
  • - NOx (hohe Emission bei Dieselmotoren mit Direkteinspritzung) als kritisch betrachtet.- NO x (high emission in diesel engines with direct injection) considered critical.

Relativ günstig sind Dieselmotoren im Hinblick auf die Emission von CO und HC. Diesel engines are relatively cheap in terms of Emission of CO and HC.  

Des weiteren sollte eine moderne elektronische Regeleinrichtung die Umstellung auf unterschiedliche Abgasnormen (z. B. Import-/Exportfahrzeuge bzw. Motoren) bei ansonsten identischen Motoren ermöglichen.Furthermore, a modern electronic control device should the changeover to different emissions standards (e.g. import / export vehicles or engines) at otherwise enable identical motors.

Weiter werden in mehreren Ländern (z. B. USA, Schweden) Vorschriften diskutiert, nach denen in Fahrzeugen Meldeanlagen zu installieren sind, die dem Fahrer sofort anzeigen, wenn unzulässig hohe Abgaswerte anfallen (z. B. aufgrund von Fehlfunktionen der Motorsteuerung, mangelnder Wartung, sonstigen Störungen).Furthermore, in several countries (e.g. USA, Sweden) Discussed regulations according to which in vehicles signaling systems to be installed, which immediately show the driver if inadmissibly high exhaust gas values occur (e.g. due to Malfunction of the engine control, lack of maintenance, other disturbances).

Daneben ist denkbar, daß im Rahmen der TÜV-Überwachung Verfahren gefordert werden, die eine Messung der Abgasemissionen sowie Aufzeichnung von kritischen Meßwerten erforderlich machen (Abgasdatenschreiber).In addition, it is conceivable that within the scope of TÜV monitoring procedures be required, the measurement of the exhaust emissions and recording of critical measured values required make (exhaust data recorder).

Aufgabetask

Der Erfindung liegt die Aufgabe zugrunde, eine Verbesserung von elektronischen Regelanlagen zu ermöglichen, so daß eine verbesserte Anpassung an verschärfte Abgasnormen ermöglicht wird.The invention has for its object an improvement of electronic control systems so that a enables improved adaptation to stricter emissions standards becomes.

Lösungsolution

Erreicht wird dieses Ziel dadurch, daß in der Abgasanlage geeignete Sensoren (z. B. Partikelmeßverfahren, NOx-Sensor) fest installiert werden.This goal is achieved by permanently installing suitable sensors (e.g. particle measurement method, NO x sensor) in the exhaust system.

Diese Sensoren ermöglichen eine kontinuierliche Messung der anfallenden Abgaswerte. Diese gemessenen Werte dienen als zusätzliches Eingangssignal für die elektronische Regelung der Dieseleinspritzanlage.These sensors enable a continuous measurement of the resulting exhaust gas values. These measured values serve as additional input signal for the electronic regulation of the Diesel injection system.

Im Beispiel einer elektronischen Regelung für eine Reiheneinspritzpumpe würde zusätzlich die Größe "Abgas" als Eingangssignal im Steuergerät verarbeitet werden, siehe Abb. 4. In the example of an electronic control for an in-line injection pump, the quantity "exhaust gas" would also be processed as an input signal in the control unit, see Fig. 4.

Diese Eingangsgrößen werden im Steuergerät komplex verknüpft und daraus die Regelgrößen für Einspritzmenge, Einspritzdauer, Einspritzverlauf etc. errechnet.These input variables are linked in a complex manner in the control unit and the control variables for the injection quantity, Injection duration, injection course, etc. calculated.

Überschreitet die Partikelemission z. B. bei Vollastbetrieb einen festgelegten, kritischen Wert, so kann die Einspritzmenge entsprechend reduziert werden.If the particle emission exceeds z. B. at full load a defined, critical value, the injection quantity be reduced accordingly.

Vorteileadvantages

- Optimierung des Abgasverhaltens möglich- Optimization of the exhaust gas behavior possible

- Im Hinblick auf die Abgasemissionen präzisere Regelung als mit bisheriger Regelung möglich- More precise regulation with regard to exhaust emissions than possible with previous regulation

- Verschlechterung des Abgasverhaltens durch Alterung sowie Wartungszustand des Motors kann regelungstechnisch kompensiert und damit aufgefangen werden- Worsening of exhaust gas behavior due to aging as well The maintenance condition of the engine can be compensated for by the control system and be caught up with it

- Änderungen der Betriebsbedingungen (z. B. Betrieb in großer Höhe führt zu vermehrtem Partikelausstoß) können präziser erfaßt und regelungstechnisch verarbeitet werden als dies derzeit möglich ist (z. B. Regelung allein mit Hilfe einer sog. Druckdose)- Changes in operating conditions (e.g. operation in large Height leads to increased particle emissions) can be more precise are recorded and processed in terms of control technology as this is currently possible (e.g. regulation using only a so-called pressure can)

- Abgassensor kann zu Dignosezwecken verwendet werden, z. B.- Exhaust gas sensor can be used for dignosis purposes, e.g. B.

  • - Hinweis-/Warnanlage für den Fahrer bei Verschlechterung des Abgasverhaltens (Vorschrift wird in USA/Schweden diskutiert)- Information / warning system for the driver in the event of deterioration the exhaust gas behavior (regulation is in USA / Sweden discussed)
  • - Aufzeichnung von kritischen Abgaswerten im Rahmen einer weiterentwickelten Abgasüberwachung durch den Techn. Überwachungsverein (Abgasdatenschreiber)- Recording of critical exhaust gas values as part of a further developed exhaust gas monitoring by the techn. Monitoring association (exhaust gas data recorder)

- Anpassung der elektronischen Regelanlage an Regionen mit unterschiedlicher Abgasgesetzgebung (z. B. Europa, USA - dabei abweichend Bundesstaat Kalifornien) durch Tausch der entsprechenden Betriebssoftware bei ansonsten identischen Anlagen möglich.- Adaptation of the electronic control system to regions with different exhaust gas legislation (e.g. Europe, USA - deviating from the state of California) by exchanging the corresponding operating software with otherwise identical Investments possible.

Claims (3)

Oberbegriff:
Elektronische Regeleinrichtung für Einspritzanlagen von Dieselmotoren.
Kennzeichnender Teil:
dadurch gekennzeichnet, daß neben den derzeit verwendeten Eingangsgrößen von im Einsatz befindlichen elektronischen Regelungen für Diesel­ einspritzanlagen wie z. B.
  • - Fahrpedalstellung
  • - Drehzahl des Motors
  • - Temperatur
  • - Ladedruck
  • - usw.
Generic term:
Electronic control device for injection systems of diesel engines.
Characteristic part:
characterized in that in addition to the input variables currently used by electronic controls in use for diesel injection systems such. B.
  • - Accelerator pedal position
  • - engine speed
  • - temperature
  • - boost pressure
  • - etc.
als wesentliche, durch fest installierte Sensoren erfaßte Eingangssignale die gemessenen Abgasemissionen herangezogen werden.
Insbesondere sind dabei heranzuziehen die gemessenen Abgaswerte für
  • - Partikel ("Ruß")
  • - Stickoxide (NOx)
The measured exhaust emissions are used as essential input signals detected by permanently installed sensors.
In particular, the measured exhaust gas values for
  • - particles ("soot")
  • - nitrogen oxides (NO x )
die bei Dieselmotoren als kritisch anzusehen sind.which are critical in diesel engines.
DE19904013751 1990-04-28 1990-04-28 Electronic control equipment for fuel injection of diesel engines - has sensors to measure exhaust emissions, esp. particulates and nitrogen oxide(s) Withdrawn DE4013751A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19904013751 DE4013751A1 (en) 1990-04-28 1990-04-28 Electronic control equipment for fuel injection of diesel engines - has sensors to measure exhaust emissions, esp. particulates and nitrogen oxide(s)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19904013751 DE4013751A1 (en) 1990-04-28 1990-04-28 Electronic control equipment for fuel injection of diesel engines - has sensors to measure exhaust emissions, esp. particulates and nitrogen oxide(s)

Publications (1)

Publication Number Publication Date
DE4013751A1 true DE4013751A1 (en) 1991-10-31

Family

ID=6405371

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19904013751 Withdrawn DE4013751A1 (en) 1990-04-28 1990-04-28 Electronic control equipment for fuel injection of diesel engines - has sensors to measure exhaust emissions, esp. particulates and nitrogen oxide(s)

Country Status (1)

Country Link
DE (1) DE4013751A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2792261A1 (en) * 1999-04-16 2000-10-20 Peugeot Citroen Automobiles Sa Helping system for driving car involves means to collect data relative to running of engine, to determine level of exhaust emissions, and to indicate levels to driver
EP1398483A2 (en) 2002-09-03 2004-03-17 Robert Bosch Gmbh Method and apparatus for controlling an intenal combustion engine with reduced emission of polutants

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2792261A1 (en) * 1999-04-16 2000-10-20 Peugeot Citroen Automobiles Sa Helping system for driving car involves means to collect data relative to running of engine, to determine level of exhaust emissions, and to indicate levels to driver
EP1398483A2 (en) 2002-09-03 2004-03-17 Robert Bosch Gmbh Method and apparatus for controlling an intenal combustion engine with reduced emission of polutants
EP1398483A3 (en) * 2002-09-03 2005-02-16 Robert Bosch Gmbh Method and apparatus for controlling an intenal combustion engine with reduced emission of pollutants

Similar Documents

Publication Publication Date Title
DE19740915B4 (en) Method for operating an internal combustion engine
EP1092087B1 (en) Method for monitoring the function of detectors in an internal combustion engine and electronic control device working in accordance with said method
DE10296962T5 (en) Engine control based on exhaust gas back pressure
EP1746276A2 (en) Monitoring of exhaust emission limits
EP1313935B1 (en) Method for determining nitrogen oxide content in internal combustion engine exhaust gases containing oxygen
DE3539012A1 (en) ARRANGEMENT WITH AN ELECTRONIC REGULATOR FOR INTERNAL COMBUSTION ENGINES
DE112011102046T5 (en) Engine air filter replacement display system
DE10330106B4 (en) Failure detection device for an internal combustion engine
DE4132008C2 (en) Method and device for checking the functionality of an oxygen probe heater
DE4302483C2 (en) Method and device for controlling an internal combustion engine
EP0628799B1 (en) Procedure for measuring and evaluating emissions from installations
DE19928477A1 (en) Control method for vehicle drive unit involves detecting signal representing vehicle acceleration, determining actual torque of drive unit depending upon acceleration signal
DE4115032A1 (en) ELECTRONIC SYSTEM IN A MOTOR VEHICLE FOR DETECTING A BAD ROUTE
DE10063439A1 (en) Error function identification method for air sensor used for motor control of internal combustion engine, involves comparing processed signal range with threshold
DE19544022C2 (en) Device for providing height information in a motor vehicle, map-based location and navigation data carrier, device for controlling an internal combustion engine using the height information and device for diagnosing exhaust-relevant parts in a motor vehicle
DE102009006568A1 (en) Algorithm for Diagnosing Leakages or Blockages Downstream of Secondary Air Injection Pressure (SAIR) Pressure Sensor
DE4013751A1 (en) Electronic control equipment for fuel injection of diesel engines - has sensors to measure exhaust emissions, esp. particulates and nitrogen oxide(s)
DE19727669B4 (en) Method for monitoring the function of an intake manifold flap for intake manifold switching of an internal combustion engine
DE3927050A1 (en) CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINES
DE10056431A1 (en) Resistance testing method of the air inlet tube on internal combustion engine, comprises measurement of pressures during low and high air flow and comparing difference to threshold value
EP1372826B1 (en) Method and device for assessing the operability of a device for reducing the ozone content in the air
DE102005007324B4 (en) Monitoring engine coolant temperature sensors
DE19937154B4 (en) Method for suction pipe pressure-guided geodetic height detection in a motor vehicle
DE4211810B4 (en) Device for temperature-dependent control of an internal combustion engine
DE10358462B4 (en) Device and method for determining the degree of contamination of an air filter unit for a motor vehicle internal combustion engine

Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee