DE102011107876A1 - Exhaust system, particular for motor vehicle, comprises exhaust pipeline, which is guided from internal combustion engine to silencer, and pressure sensor is provided, which is arranged on exhaust pipeline - Google Patents

Exhaust system, particular for motor vehicle, comprises exhaust pipeline, which is guided from internal combustion engine to silencer, and pressure sensor is provided, which is arranged on exhaust pipeline Download PDF

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Publication number
DE102011107876A1
DE102011107876A1 DE102011107876A DE102011107876A DE102011107876A1 DE 102011107876 A1 DE102011107876 A1 DE 102011107876A1 DE 102011107876 A DE102011107876 A DE 102011107876A DE 102011107876 A DE102011107876 A DE 102011107876A DE 102011107876 A1 DE102011107876 A1 DE 102011107876A1
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Germany
Prior art keywords
exhaust
exhaust pipeline
motor vehicle
exhaust system
internal combustion
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DE102011107876A
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German (de)
Inventor
Daniel Bamberger
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Marquardt GmbH
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Marquardt GmbH
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Priority to DE102011107876A priority Critical patent/DE102011107876A1/en
Publication of DE102011107876A1 publication Critical patent/DE102011107876A1/en
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    • 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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
    • 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
    • F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
    • F02D41/1441—Plural sensors
    • 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
    • F02D41/1448—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 exhaust gas pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/08—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a pressure sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/14—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
    • F01N2900/1406—Exhaust gas pressure
    • 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
    • F02D41/1445—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 related to the exhaust flow
    • 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
    • Y02T10/40—Engine management systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Silencers (AREA)

Abstract

The exhaust system (1) comprises an exhaust pipeline (5), which is guided from an internal combustion engine (2) to a silencer (3). A pressure sensor (6,6') is provided, which is arranged on the exhaust pipeline. Multiple pressure sensors are arranged on the exhaust pipeline at regular intervals.

Description

Die Erfindung betrifft ein Abgassystem nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an exhaust system according to the preamble of patent claim 1.

Ein derartiges Abgassystem kann in einem Kraftfahrzeug eingesetzt werden. Es lässt sich insbesondere in Assistenzsystemen für den Fahrer zur Kontrolle von Funktionen des Kraftfahrzeugs integrieren.Such an exhaust system can be used in a motor vehicle. It can be integrated in particular in assistance systems for the driver to control functions of the motor vehicle.

Ein solches Abgassystem umfasst eine von einem Verbrennungsmotor bis zu einem Endschalldämpfer führende Abgasleitung. Eine weitergehende Kontrolle des Abgassystems für den Fahrer ist insoweit nicht vorgesehen.Such an exhaust system includes an exhaust pipe leading from an internal combustion engine to an end muffler. A further control of the exhaust system for the driver is not provided in this respect.

Der Erfindung liegt die Aufgabe zugrunde, es dem Fahrer des Kraftfahrzeugs zu ermöglichen, eine schnelle Analyse des Abgassystems vorzunehmen.The invention has for its object to enable the driver of the motor vehicle to make a quick analysis of the exhaust system.

Diese Aufgabe wird bei einem gattungsgemäßen Abgassystem durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.This object is achieved in a generic exhaust system by the characterizing features of claim 1.

Beim erfindungsgemäßen Abgassystem ist wenigstens ein Drucksensor an der Abgasleitung angeordnet. Mit Hilfe der Überwachung des Druckes in der Abgasleitung können eventuelle Fehlfunktionen im Abgassystem detektiert und dem Fahrer des Kraftfahrzeugs zur Kenntnis gebracht werden. Weitere Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.In the exhaust system according to the invention at least one pressure sensor is arranged on the exhaust pipe. With the help of the monitoring of the pressure in the exhaust pipe any malfunctions in the exhaust system can be detected and brought to the driver of the motor vehicle for information. Further embodiments of the invention are the subject of the dependent claims.

In weiterer Ausgestaltung können mehrere Drucksensoren an der Abgasleitung angeordnet sein. Zweckmäßigerweise sind die Drucksensoren in regelmäßigen Abständen an der Abgasleitung angeordnet. Dadurch können nicht nur Fehlfunktionen festgestellt sondern auch der Ort lokalisiert werden, an dem die Fehlfunktionen auftreten.In a further embodiment, a plurality of pressure sensors can be arranged on the exhaust pipe. Conveniently, the pressure sensors are arranged at regular intervals on the exhaust pipe. This not only detects malfunctions but also locates the location where the malfunctions occur.

Für eine besonders bevorzugte Ausgestaltung der Erfindung ist nachfolgendes festzustellen. Durch die Anbringung von Drucksensoren oder Luftmengenmesssensoren am Auspuff in regelmäßigen Abständen kann ein Druckverlust auf dem kompletten Weg vom Motor bis zum Endschalldämpfer festgestellt werden. Die Drucksensoren werden beim Erstbetrieb eingelernt und können ab diesem Zeitpunkt einen Druckverlust oder eine Änderung im Druckverhältnis feststellen. Somit können undichte Stellen sowie anderweitige Defekte, beispielsweise ein falsches Benzin-/Luft-Verhältnis der kompletten Abgasanlage festgestellt und örtlich eingegrenzt werden.For a particularly preferred embodiment of the invention is to be determined below. Applying pressure sensors or air flow rate sensors to the exhaust at regular intervals can detect a pressure drop across the entire path from the engine to the muffler. The pressure sensors are taught during initial operation and can determine a pressure loss or a change in the pressure ratio from this point in time. Thus, leaks and other defects, such as a wrong gasoline / air ratio of the entire exhaust system can be detected and localized.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, dass der Fahrer eines Kraftfahrzeugs bequem über den Bildschirm im Fahrzeug überprüfen kann, ob die Abgasanlage einwandfrei funktioniert. Eine mögliche undichte Stelle in der Abgasanlage kann durch die regelmäßig angebrachten Sensoren eingegrenzt werden, so dass ohne einen Werkstattbesuch eine Aussage über das defekte Teil getätigt werden kann. Mögliche Fehler im Schalldämpfer, Ablagerungen oder anderweitige Defekte können über eine Abweichung des Druckverhältnisses festgestellt werden. Schwerwiegende Fehler können durch frühzeitiges Erkennen eines Defekts verhindert werden.The advantages achieved by the invention are, in particular, that the driver of a motor vehicle can conveniently check on the screen in the vehicle, whether the exhaust system works properly. A possible leak in the exhaust system can be limited by the regularly mounted sensors, so that without a visit to the workshop a statement about the defective part can be made. Possible errors in the silencer, deposits or other defects can be detected by a deviation of the pressure ratio. Serious errors can be prevented by early detection of a defect.

Ein Ausführungsbeispiel der Erfindung mit verschiedenen Weiterbildungen und Ausgestaltungen ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigt dieAn embodiment of the invention with various developments and refinements is shown in the drawing and will be described in more detail below. It shows the

Fig. schematisch eine Abgasanlage für ein Kraftfahrzeug.Fig. Schematically an exhaust system for a motor vehicle.

In der Fig. ist ein Abgassystem 1 für ein Kraftfahrzeug mit einem Verbrennungsmotor 2 zu sehen. Das Abgassystem umfasst eine vom Verbrennungsmotor 2 bis zu einem Endschalldämpfer 3, der ein Auspuffrohr 4 aufweist, führende Abgasleitung 5. An der Abgasleitung 5 ist wenigstens ein Drucksensor 6 angeordnet. Der Drucksensor 6 misst den in der Abgasleitung 5 herrschenden Druck der Verbrennungsabgase und leitet den Messwert über eine Datenleitung 7 zu einem Steuergerät 8 im Kraftfahrzeug weiter. Das Steuergerät 8 wertet den gemessenen Druck aus und gibt an einer Anzeigeeinrichtung 9 eines Fahrerassistenzsystems im Kraftfahrzeug die der Auswertung entsprechenden Informationen über das Abgassystem 1. Um zusätzlich den Ort eventueller Fehler in der Abgasleitung 5 genauer zu lokalisieren, können mehrere Drucksensoren 6, 6' in regelmäßigen Abständen an der Abgasleitung 5 angeordnet sein.In the figure is an exhaust system 1 for a motor vehicle with an internal combustion engine 2 to see. The exhaust system includes one from the internal combustion engine 2 up to a rear silencer 3 that is an exhaust pipe 4 has, leading exhaust pipe 5 , At the exhaust pipe 5 is at least a pressure sensor 6 arranged. The pressure sensor 6 measures that in the exhaust pipe 5 prevailing pressure of the combustion exhaust gases and conducts the measured value via a data line 7 to a control unit 8th in the motor vehicle on. The control unit 8th evaluates the measured pressure and outputs to a display device 9 a driver assistance system in the motor vehicle, the information corresponding to the evaluation of the exhaust system 1 , In addition to the location of any errors in the exhaust pipe 5 To pinpoint more precisely, several pressure sensors can be used 6 . 6 ' at regular intervals on the exhaust pipe 5 be arranged.

Die Erfindung ist nicht auf das beschriebene und dargestellte Ausführungsbeispiel beschränkt. Sie umfasst vielmehr auch alle fachmännischen Weiterbildungen im Rahmen der durch die Patentansprüche definierten Erfindung. So kann das erfindungsgemäße Abgassystem 1 nicht nur in auf dem Markt befindlichen sowie zukünftigen PKW's und/oder LKW's integriert werden sondern kann auch für sonstige Fortbewegungsmittel mit einem Verbrennungsmotor, wie Motorräder, Schiffe o. dgl. sowie für stationäre Verbrennungsmotoranlagen, beispielsweise für Blockheizkraftwerke, Verwendung finden.The invention is not limited to the described and illustrated embodiment. Rather, it also encompasses all expert developments within the scope of the invention defined by the claims. Thus, the exhaust system of the invention 1 Not only can be integrated in the market and future cars and / or trucks but can also for other means of locomotion with an internal combustion engine, such as motorcycles, ships o. The like. As well as stationary internal combustion engine systems, for example for combined heat and power plants, use.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Abgassystemexhaust system
22
Verbrennungsmotorinternal combustion engine
33
Endschalldämpfermuffler
44
Auspuffrohrexhaust pipe
55
Abgasleitungexhaust pipe
6, 6'6, 6 '
Drucksensorpressure sensor
77
Datenleitungdata line
88th
Steuergerätcontrol unit
99
Anzeigeeinrichtungdisplay

Claims (2)

Abgassystem, insbesondere für ein Kraftfahrzeug, mit einer von einem Verbrennungsmotor (2) bis zu einem Endschalldämpfer (3) führenden Abgasleitung (5), dadurch gekennzeichnet, dass wenigstens ein Drucksensor (6) an der Abgasleitung (5) angeordnet ist.Exhaust system, in particular for a motor vehicle, with one of an internal combustion engine ( 2 ) to a rear silencer ( 3 ) leading exhaust pipe ( 5 ), characterized in that at least one pressure sensor ( 6 ) on the exhaust pipe ( 5 ) is arranged. Abgassystem nach Anspruch 1, dadurch gekennzeichnet, dass mehrere Drucksensoren (6, 6'), insbesondere in regelmäßigen Abständen, an der Abgasleitung (5) angeordnet sind.Exhaust system according to claim 1, characterized in that a plurality of pressure sensors ( 6 . 6 ' ), in particular at regular intervals, at the exhaust pipe ( 5 ) are arranged.
DE102011107876A 2011-07-18 2011-07-18 Exhaust system, particular for motor vehicle, comprises exhaust pipeline, which is guided from internal combustion engine to silencer, and pressure sensor is provided, which is arranged on exhaust pipeline Withdrawn DE102011107876A1 (en)

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DE102011107876A DE102011107876A1 (en) 2011-07-18 2011-07-18 Exhaust system, particular for motor vehicle, comprises exhaust pipeline, which is guided from internal combustion engine to silencer, and pressure sensor is provided, which is arranged on exhaust pipeline

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DE102011107876A DE102011107876A1 (en) 2011-07-18 2011-07-18 Exhaust system, particular for motor vehicle, comprises exhaust pipeline, which is guided from internal combustion engine to silencer, and pressure sensor is provided, which is arranged on exhaust pipeline

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019140478A1 (en) * 2018-01-22 2019-07-25 Kristl, Seibt & Co. Gesellschaft M.B.H. Method and device for regulating the pressure of the combustion gas and/or exhaust gas of a work machine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4033269A1 (en) * 1990-10-19 1992-04-23 Gillet Heinrich Gmbh MUFFLER SYSTEM FOR MOTOR VEHICLES
DE102005011747B3 (en) * 2005-03-11 2006-06-29 Benteler Automobiltechnik Gmbh Active exhaust gas silencer for motor vehicle has membrane set in flexural oscillations by excitation by converter so that on surface facing exhaust gas flow structure-borne noise tuned to exhaust gas noise is created
DE102007021586A1 (en) * 2006-05-11 2007-11-22 GM Global Technology Operations, Inc., Detroit Silencer with variable back pressure for a diesel exhaust system
DE102006048045A1 (en) * 2006-10-11 2008-04-17 Daimler Ag Emission control system for an internal combustion engine
DE102008051958A1 (en) * 2007-10-18 2009-05-07 GM Global Technology Operations, Inc., Detroit Diesel exhaust gas temperature reduction
DE102010054570A1 (en) * 2010-12-15 2011-08-25 Daimler AG, 70327 Exhaust gas recirculation rate adjusting method for internal combustion engine in motor car, involves adjusting exhaust gas recirculation valve based on comparison of nominal and actual values of exhaust gas recirculation rate
DE102010030633A1 (en) * 2010-06-29 2011-12-29 Robert Bosch Gmbh Method for determining state of e.g. silencer in exhaust gas region of fuel-efficient petrol-powered internal combustion engine in motor car, involves partially or fully opening throttle valve arranged in suction region of engine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4033269A1 (en) * 1990-10-19 1992-04-23 Gillet Heinrich Gmbh MUFFLER SYSTEM FOR MOTOR VEHICLES
DE102005011747B3 (en) * 2005-03-11 2006-06-29 Benteler Automobiltechnik Gmbh Active exhaust gas silencer for motor vehicle has membrane set in flexural oscillations by excitation by converter so that on surface facing exhaust gas flow structure-borne noise tuned to exhaust gas noise is created
DE102007021586A1 (en) * 2006-05-11 2007-11-22 GM Global Technology Operations, Inc., Detroit Silencer with variable back pressure for a diesel exhaust system
DE102006048045A1 (en) * 2006-10-11 2008-04-17 Daimler Ag Emission control system for an internal combustion engine
DE102008051958A1 (en) * 2007-10-18 2009-05-07 GM Global Technology Operations, Inc., Detroit Diesel exhaust gas temperature reduction
DE102010030633A1 (en) * 2010-06-29 2011-12-29 Robert Bosch Gmbh Method for determining state of e.g. silencer in exhaust gas region of fuel-efficient petrol-powered internal combustion engine in motor car, involves partially or fully opening throttle valve arranged in suction region of engine
DE102010054570A1 (en) * 2010-12-15 2011-08-25 Daimler AG, 70327 Exhaust gas recirculation rate adjusting method for internal combustion engine in motor car, involves adjusting exhaust gas recirculation valve based on comparison of nominal and actual values of exhaust gas recirculation rate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019140478A1 (en) * 2018-01-22 2019-07-25 Kristl, Seibt & Co. Gesellschaft M.B.H. Method and device for regulating the pressure of the combustion gas and/or exhaust gas of a work machine
US11499487B2 (en) 2018-01-22 2022-11-15 Kristl, Seibt & Co. Gesellschaft M.B.H. Method and device for regulating the pressure of the combustion gas and/or exhaust gas of a machine

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