EP1260686A2 - Temperature sensor for an internal combustion engine - Google Patents

Temperature sensor for an internal combustion engine Download PDF

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Publication number
EP1260686A2
EP1260686A2 EP02007544A EP02007544A EP1260686A2 EP 1260686 A2 EP1260686 A2 EP 1260686A2 EP 02007544 A EP02007544 A EP 02007544A EP 02007544 A EP02007544 A EP 02007544A EP 1260686 A2 EP1260686 A2 EP 1260686A2
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EP
European Patent Office
Prior art keywords
detection device
temperature detection
support structure
sensor element
engine
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
EP02007544A
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German (de)
French (fr)
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EP1260686B1 (en
EP1260686A3 (en
Inventor
Dirk Dr. Jeschke
Robert Albiez
Joachim Kuhn
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication of EP1260686A2 publication Critical patent/EP1260686A2/en
Publication of EP1260686A3 publication Critical patent/EP1260686A3/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14—Indicating devices; Other safety devices
    • F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/13—Ambient temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/50—Temperature using two or more temperature sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • 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
    • F02D2200/0414—Air temperature
    • 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
    • F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices

Definitions

  • the invention relates to a temperature detection device for a Internal combustion engine.
  • Conventional temperature sensing devices typically include Sensor elements based on thermodynamic measuring principles such as for example temperature-related volume change of a fluid, or on Basis of electrical effects such as changes in a Line resistance, allow temperature detection.
  • This Sensor elements are attached via electrical lines or thin pipes a central detection device connected.
  • Sensor elements for detection the engine temperature can be arranged in the area of a cylinder head.
  • Sensor elements for detecting the oil temperature are preferably in one, Provided downstream of an oil pump line section.
  • Sensor elements for detecting the temperature of the engine intake air can be in an intake tract of the engine arranged before or after a filter device become.
  • the invention has for its object a temperature detection device to create by which at least two in the operation of one Internal combustion engine temperature values taken into account in an advantageous manner can be recorded in a favorable manner.
  • a Temperature detection device for an internal combustion engine with a Support structure a Temperature detection device for an internal combustion engine with a Support structure, a first recorded on the support structure Sensor element, a second received on the support structure Sensor element, an engine air guide device for supplying an engine intake air flow to the first sensor element and a cooler air guidance device for supplying one through an engine cooler passed cooler airflow to the second sensor element, wherein the Support structure is arranged in an area in which the two air flows run adjacent to each other.
  • the temperatures of the two air flows centrally to capture, the measurement signals obtained under reduced Cabling effort in a wiring harness system provided on the vehicle can be coupled.
  • the functioning of the two sensors before starting the engine check against each other and if necessary a joint calibration of the two Sensors. Because of the close proximity of the two sensor elements is a particularly meaningful comparison of the recorded Temperature values possible. Since in the operation of the internal combustion engine by the second sensor element temperature not recorded below the temperature of the Intake air may be a particularly reliable function test of the Temperature detection device possible.
  • the two sensor elements are preferably one via the support structure Unit summarized. This results in particular under assembly technology advantages.
  • the two sensor elements are according to a special aspect of the present invention on a common wiring with a connected wiring harness provided on the vehicle.
  • the two of them Cabling assigned to sensor elements can be done via a common Connector structure to be connected to the vehicle wiring harness.
  • the connector structure is advantageously integral with the support structure educated.
  • the carrier structure is preferably made of a plastic material manufactured and forms a partition, which at least before the two air flows whose slipping separates the sensor elements from each other.
  • the support structure preferably integrally formed with an air guide member.
  • This Air guiding member is preferably an engine intake air duct.
  • the carrier structure into one To integrate fan suspension or a water box of a vehicle cooler.
  • the two sensor elements are preferably adjacent to one another arranged. This results in a particularly compact structure.
  • the carrier structure is advantageously arranged in an area in which one Pipe installation of an engine intake air system on a radiator fan is passed.
  • the engine intake air system is preferably in this area coupled to an engine cooler or a radiator fan device.
  • Figure 1 shows a simplified sectional view of a Temperature detection device 1 with a first sensor element 2 and second sensor element 3, the first sensor element 2 for detecting the Temperature of an engine intake air flow V1 is provided and the second Sensor element 3 for detecting the temperature of an engine cooler (Fig.2 Reference numeral 9) flowing cooler air flow V2 is provided.
  • the first sensor element 2 and the second sensor element 3 are on one common support structure 4 arranged here from a plastic material is manufactured and on a fastening device 5a, 5b Air guiding device 5c can be attached, which is from the engine intake air flow V1 is flowed through.
  • the two sensor elements 2, 3 are PTC sensors formed, the connecting cable 6 via a Connector device with a cable branch provided on the vehicle are connectable.
  • This connector device is preferably integral with the support structure 4 is formed
  • An air guiding device 8 is also provided for the second sensor element 3 through which a partial flow V2'des from a cooler or vehicle heat exchanger outflowing and intensely heated by the engine cooling water flow V2 is guided over the second sensor element 3.
  • the support structure 4 of the temperature detection device 1 comprises the latter Embodiment a base body 9 made of a plastic material through which also a sufficient thermal separation of the two Sensor elements 2, 3 is reached.
  • the central, by the temperature detection device 1 described generated measured values for the temperature of the engine intake air and the The temperature of the heated air flowing out of the engine cooler can exceed a single connector of a control device, in particular one electronic engine management system for OBD-relevant execution Functions are fed.
  • the temperature detection device can also be part automatic climate control (AOC sensor).
  • the generated by the first sensor element 2 with respect to the temperature of the Engine intake air flow indicative measurement signals as well as those via the second Sensor element 3 detected, with respect to the temperature of the engine cooler outflowing air indicative signals can be used to optimize the operation of the Internal combustion engine and used to monitor the same.
  • Fig.2 is shown in the form of a schematic diagram, in which way Temperature detection device 1 according to the invention in a motor vehicle can be arranged.
  • Temperature detection device 1 according to the invention in a motor vehicle can be arranged.
  • Air guiding device 10 guiding engine intake air flow V1 is so close to a place overflowed by a cooler air flow V2 that the Temperatures of the engine air and that passed through the radiator 9 - and here warmed - air can be captured essentially centrally.
  • the Connector device 11 comprises a coupling section which is integral with the air guide device 10 is formed.
  • the air guiding device 10 is furthermore provided with a suspension device 12 a radiator fan 13 connected.
  • This suspension device 12 in turn is coupled to the cooler 9.
  • the exemplary embodiment described is the sensor device 1 on one Structural component of the air guide device 10 attached.
  • the invention is not limited to such an embodiment.
  • the temperature detection device 1 for the combined detection of Engine intake air and the air heated by a cooler 9 at one of the Blower device 13 or the structural component assigned to the cooler 9 itself to install.
  • the temperature detection device according to the invention 1 further system parameters such as the cooling water temperature in the Detect cooler 9.
  • a temperature detection device 1 is preferably formed on a structural component assigned to the cooler 9.
  • the solution according to the invention makes it possible for the vehicle radiator to Blower device with its suspension device and the in Components of the engine intake air guiding device located in the front of the vehicle 10 as one, with the required Sensor devices equipped, pre-assembled unit to form the Assembled in an automated assembly process in an advantageous manner can be. It is possible to use the connector plug device 11 in this way to train them in the course of using the above-mentioned unit in the vehicle automatically with the vehicle provided Connection components engaged.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

The device has a bearer structure (4), two sensor elements (2,3) accommodated on the structure, a device for feeding at least a sub-flow (V1') of an engine induction flow (V1) to the first sensor element and a device for feeding at least a sub-flow (V2') of an air flow (V2) passing through an engine radiator to the second sensor element. The bearer structure is arranged in a region in which the two air flows run adjacent to each other.

Description

Die Erfindung betrifft eine Temperaturerfassungseinrichtung für eine Brennkraftmaschine.The invention relates to a temperature detection device for a Internal combustion engine.

Herkömmliche Temperaturerfassungseinrichtungen umfassen üblicherweise Sensorelemente die auf Grundlage thermodynamischer Messprinzipien wie beispielsweise temperaturbedingter Volumenänderung eines Fluides, oder auf Grundlage elektrischer Effekte wie beispielsweise Änderungen eines Leitungswiderstandes, eine Temperaturerfassung ermöglichen. Diese Sensorelemente sind über elektrische Leitungen oder auch dünne Rohrleitungen an eine zentrale Erfassungseinrichtung angeschlossen. Sensorelemente zur Erfassung der Motortemperatur können im Bereich eines Zylinderkopfes angeordnet sein. Sensorelemente zur Erfassung der Öltemperatur sind vorzugsweise in einem, stromabwärts einer Ölpumpe liegenden Leitungsabschnitt vorgesehen. Sensorelemente zur Erfassung der Temperatur der Motor-Ansaugluft können in einem Ansaugtrakt des Motors vor oder nach einer Filtereinrichtung angeordnet werden.Conventional temperature sensing devices typically include Sensor elements based on thermodynamic measuring principles such as for example temperature-related volume change of a fluid, or on Basis of electrical effects such as changes in a Line resistance, allow temperature detection. This Sensor elements are attached via electrical lines or thin pipes a central detection device connected. Sensor elements for detection the engine temperature can be arranged in the area of a cylinder head. Sensor elements for detecting the oil temperature are preferably in one, Provided downstream of an oil pump line section. Sensor elements for detecting the temperature of the engine intake air can be in an intake tract of the engine arranged before or after a filter device become.

Durch die Erfassung der Temperaturen der Ansaugluft, des Kühlwassers, und des Öles ist es möglich, den Betrieb des Motors insbesondere im Hinblick auf die Abgasqualität zu optimieren. Die zahlreichen Sensoren sowie deren Ankoppelung an eine zentrale Motormanagementeinheit erweist sich jedoch unter montagetechnischen Gesichtspunkten als aufwendig.By detecting the temperatures of the intake air, the cooling water, and the It is possible to operate the engine especially with regard to the oil Optimize exhaust gas quality. The numerous sensors and their connection to a central engine management unit proves however under assembly points of view as complex.

Der Erfindung liegt die Aufgabe zugrunde, eine Temperaturerfassungseinrichtung zu schaffen, durch welche wenigstens zwei bei dem Betrieb einer Brennkraftmaschine in vorteilhafter Weise berücksichtigte Temperaturmesswerte auf günstige Weise erfasst werden können. The invention has for its object a temperature detection device to create by which at least two in the operation of one Internal combustion engine temperature values taken into account in an advantageous manner can be recorded in a favorable manner.

Diese Aufgabe wird erfindungsgemäß gelöst durch eine Temperaturerfassungseinrichtung für eine Brennkraftmaschine mit einer Trägerstruktur , einem an der Trägerstruktur aufgenommenen ersten Sensorelement, einem an der Trägerstruktur aufgenommenen zweiten Sensorelement, einer Motor-Luftführungseinrichtung zur Zuleitung eines Motor-Ansaugluftstromes zu dem ersten Sensorelement und einer Kühler-Luftführungseinrichtung zur Zuleitung eines durch einen Motorkühler hindurchgetretenen Kühler-Luftstromes zu dem zweiten Sensorelement, wobei die Trägerstruktur in einem Bereich angeordnet ist, in welchem die beiden Luftströme zueinander benachbart verlaufen.This object is achieved by a Temperature detection device for an internal combustion engine with a Support structure, a first recorded on the support structure Sensor element, a second received on the support structure Sensor element, an engine air guide device for supplying an engine intake air flow to the first sensor element and a cooler air guidance device for supplying one through an engine cooler passed cooler airflow to the second sensor element, wherein the Support structure is arranged in an area in which the two air flows run adjacent to each other.

Dadurch wird es auf vorteilhafte Weise möglich durch einen kompakte und vorteilhaft montierbare Baueinheit die Temperaturen der beiden Luftströme zentral zu erfassen, wobei die gewonnenen Messsignale unter vermindertem Verkabelungsaufwand in ein fahrzeugseitig vorgesehenes Kabelbaumsystem eingekoppelt werden können. In besonders vorteilhafter Weise wird es möglich, beispielsweise vor einem Motorstart die Funktionsweise der beiden Sensoren gegeneinander zu überprüfen und ggf. eine gemeinsame Eichung der beiden Sensoren vorzunehmen. Aufgrund der örtlichen Nähe der beiden Sensorelemente wird ein besonders aussagefähiger Vergleich der jeweils erfassten Temperaturwerte möglich. Da im Betrieb der Brennkraftmaschine die durch das zweite Sensorelement erfasste Temperatur nicht unter der Temperatur der Ansaugluft liegen kann, ist eine besonders zuverlässige Funktionsprüfung der Temperaturerfassungseinrichtung möglich.This makes it possible in an advantageous manner through a compact and advantageously mountable unit, the temperatures of the two air flows centrally to capture, the measurement signals obtained under reduced Cabling effort in a wiring harness system provided on the vehicle can be coupled. In a particularly advantageous manner, it becomes possible For example, the functioning of the two sensors before starting the engine check against each other and if necessary a joint calibration of the two Sensors. Because of the close proximity of the two sensor elements is a particularly meaningful comparison of the recorded Temperature values possible. Since in the operation of the internal combustion engine by the second sensor element temperature not recorded below the temperature of the Intake air may be a particularly reliable function test of the Temperature detection device possible.

Die beiden Sensorelemente sind vorzugsweise über die Trägerstruktur zu einer Baueinheit zusammengefasst. Hierdurch ergeben sich insbesondere unter montagetechnischen Gesichtspunkten Vorteile.The two sensor elements are preferably one via the support structure Unit summarized. This results in particular under assembly technology advantages.

Die beiden Sensorelemente sind gemäß einem besonderen Aspekt der vorliegenden Erfindung über eine gemeinsame Verkabelung mit einem fahrzeugseitig vorgesehenen Kabelbaumast verbunden. Die den beiden Sensorelementen zugeordnete Verkabelung kann hierbei über eine gemeinsame Anschlusssteckerstruktur mit dem fahrzeugseitigen Kabelbaumast verbunden sein.The two sensor elements are according to a special aspect of the present invention on a common wiring with a connected wiring harness provided on the vehicle. The two of them Cabling assigned to sensor elements can be done via a common Connector structure to be connected to the vehicle wiring harness.

Die Anschlusssteckerstruktur ist mit Vorteil integral mit der Trägerstruktur ausgebildet. Die Trägerstruktur ist vorzugsweise aus einem Kunststoffmaterial gefertigt und bildet eine Trennwand, welche die beiden Luftströme zumindest vor deren Überstreifen der Sensorelemente voneinander trennt.The connector structure is advantageously integral with the support structure educated. The carrier structure is preferably made of a plastic material manufactured and forms a partition, which at least before the two air flows whose slipping separates the sensor elements from each other.

Gemäß einem besonderen Aspekt der Erfindung ist die Trägerstruktur vorzugsweise integral mit einem Luftführungsorgan ausgebildet. Bei diesem Luftführungsorgan handelt es sich vorzugsweise um eine Motoransaugluftführung.According to a particular aspect of the invention, the support structure preferably integrally formed with an air guide member. With this Air guiding member is preferably an engine intake air duct.

Alternativ hierzu ist es auch möglich, die Trägerstruktur in eine Gebläseaufhängung oder einen Wasserkasten eines Fahrzugkühlers zu integrieren. Die beiden Sensorelemente sind vorzugsweise zueinander benachbart angeordnet. Hierdurch ergibt sich ein besonders kompakter Aufbau.As an alternative to this, it is also possible to convert the carrier structure into one To integrate fan suspension or a water box of a vehicle cooler. The two sensor elements are preferably adjacent to one another arranged. This results in a particularly compact structure.

Die Trägerstruktur ist mit Vorteil in einem Bereich angeordnet, in welchem eine Leitungseinrichtung eines Motoransaugluftsystems an einem Kühlergebläse vorbeigeführt ist. In diesem Bereich ist vorzugsweise das Motoransaugluftsystem mit einem Motorkühler oder einer Kühlergebläseeinrichtung gekoppelt.The carrier structure is advantageously arranged in an area in which one Pipe installation of an engine intake air system on a radiator fan is passed. The engine intake air system is preferably in this area coupled to an engine cooler or a radiator fan device.

Es ist möglich , ein weiteres Sensorelement vorzusehen, das ebenfalls an der Trägerstruktur angebracht ist, zur Erfassung der Kühlwassertemperatur, wobei dieses Sensorelement vorzugsweise ebenfalls über die gemeinsame Verkabelung an den fahrzeugseitigen Kabelbaum angeschlossen ist.It is possible to provide a further sensor element, which is also on the Support structure is attached, for detecting the cooling water temperature, wherein this sensor element preferably also via the common wiring is connected to the vehicle harness.

Weitere Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung in Verbindung mit der Zeichnung. Es zeigen:

Fig. 1
eine Schemadarstellung zur Erläuterung eines bevorzugten Grundaufbaues einer erfindungsgemäßen Temperaturerfassungseinrichtung;
Fig. 2
eine Skizze zur Erläuterung einer bevorzugten Einbauposition der erfindungsgemäßen Temperaturerfassungseinrichtung.
Further details of the invention emerge from the following description in conjunction with the drawing. Show it:
Fig. 1
a schematic representation to explain a preferred basic structure of a temperature detection device according to the invention;
Fig. 2
a sketch to explain a preferred installation position of the temperature detection device according to the invention.

Figur 1 zeigt eine vereinfachte Schnittansicht einer Temperaturerfassungseinrichtung 1 mit einem ersten Sensorelement 2 und einem zweiten Sensorelement 3 wobei das erste Sensorelement 2 zur Erfassung der Temperatur eines Motor-Ansaugluftstromes V1 vorgesehen ist und das zweite Sensorelement 3 zur Erfassung der Temperatur des aus einem Motor-Kühler (Fig.2 Bezugszeichen 9) abströmenden Kühler-Luftstromes V2 vorgesehen ist.Figure 1 shows a simplified sectional view of a Temperature detection device 1 with a first sensor element 2 and second sensor element 3, the first sensor element 2 for detecting the Temperature of an engine intake air flow V1 is provided and the second Sensor element 3 for detecting the temperature of an engine cooler (Fig.2 Reference numeral 9) flowing cooler air flow V2 is provided.

Das erste Sensorelement 2 und das zweite Sensorelement 3 sind an einer gemeinsamen Trägerstruktur 4 angeordnet die hier aus einem Kunststoffmaterial gefertigt ist und über eine Befestigungseinrichtung 5a, 5b an einer Luftführungseinrichtung 5c anbringbar ist welche von dem Motor-Ansaugluftstrom V1 durchströmt wird.The first sensor element 2 and the second sensor element 3 are on one common support structure 4 arranged here from a plastic material is manufactured and on a fastening device 5a, 5b Air guiding device 5c can be attached, which is from the engine intake air flow V1 is flowed through.

Die beiden Sensorelemente 2, 3 sind bei diesem Ausführungsbeispiel als PTC-Sensoren ausgebildet, wobei deren Anschlusskabel 6 über eine Steckverbindereinrichtung mit einem fahrzeugseitig vorgesehenen Kabelbaumast verbindbar sind. Diese Anschlusssteckereinrichtung ist vorzugsweise integral mit der Trägerstruktur 4 ausgebildetIn this exemplary embodiment, the two sensor elements 2, 3 are PTC sensors formed, the connecting cable 6 via a Connector device with a cable branch provided on the vehicle are connectable. This connector device is preferably integral with the support structure 4 is formed

In einem Abstand von ca. 4 bis 15 mm ist in dieser Ansicht oberhalb des ersten Sensorelementes 2 eine Luftführungseinrichtung 7 vorgesehen durch welche ein Teilstrom V1' des vorbeiströmenden Motor-Ansaugluftstromes V1 intensiv über das erste Sensorelement 2 geführt wird um die Temperatur der Ansaugluft zuverlässig zu erfassen. At a distance of approx. 4 to 15 mm is above the first in this view Sensor element 2 an air guide device 7 provided by which Partial flow V1 'of the engine intake air flow V1 flowing past intensely via the first sensor element 2 is reliably guided around the temperature of the intake air capture.

Auch für das zweite Sensorelement 3 ist eine Luftführungseinrichtung 8 vorgesehen durch welche ein Teilstrom V2'des aus einem Kühler bzw. Fahrzeugwärmetauscher abströmenden und, durch das Motorkühlwasser erwärmten Luftstromes V2 intensiv über das zweite Sensorelement 3 geführt wird.An air guiding device 8 is also provided for the second sensor element 3 through which a partial flow V2'des from a cooler or vehicle heat exchanger outflowing and intensely heated by the engine cooling water flow V2 is guided over the second sensor element 3.

Die Trägerstruktur 4 der Temperaturerfassungseinrichtung 1 umfasst bei diesem Ausführungsbeispiel einen aus einem Kunststoffmaterial gefertigten Basiskörper 9 durch welchen auch eine ausreichende thermische Trennung der beiden Sensorelemente 2, 3 erreicht wird.The support structure 4 of the temperature detection device 1 comprises the latter Embodiment a base body 9 made of a plastic material through which also a sufficient thermal separation of the two Sensor elements 2, 3 is reached.

Die, durch die beschriebene Temperaturerfassungseinrichtung 1 zentral generierten Messwerte für die Temperatur der Motor-Ansaugluft sowie der Temperatur der aus dem Motor-Kühler abströmenden erwärmten Luft, können über einen einzigen Steckverbinder einer Steuereinrichtung insbesondere einem elektronischen Motor- Managementsystem zur Ausführung OBD-relevanter Funktionen zugeführt werden. Die Temperaturerfassungseinrichtung kann auch Teil einer Klimaautomatik (AOC-Sensor) bilden.The central, by the temperature detection device 1 described generated measured values for the temperature of the engine intake air and the The temperature of the heated air flowing out of the engine cooler can exceed a single connector of a control device, in particular one electronic engine management system for OBD-relevant execution Functions are fed. The temperature detection device can also be part automatic climate control (AOC sensor).

Die durch das erste Sensorelement 2 generierten, hinsichtlich der Temperatur des Motor-Ansaugluftstromes indikativen Messsignale sowie die über das zweite Sensorelement 3 erfassten, hinsichtlich der Temperatur der aus dem Motorkühler abströmenden Luft indikativen Signale können zur Optimierung des Betriebes der Brennkraftmaschine sowie zur Überwachung derselben herangezogen werden.The generated by the first sensor element 2 with respect to the temperature of the Engine intake air flow indicative measurement signals as well as those via the second Sensor element 3 detected, with respect to the temperature of the engine cooler outflowing air indicative signals can be used to optimize the operation of the Internal combustion engine and used to monitor the same.

In Fig.2 ist in Form einer Prinzipskizze dargestellt, in welcher Weise die erfindungsgemäße Temperaturerfassungseinrichtung 1 bei einem Kraftfahrzeug angeordnet werden kann. Bei diesem Ausführungsbeispiel befinden sich das erste Sensorelement 2 und das zweite Sensorelement 3 in einem in Fahrtwind-Anströmrichtung gesehen hinter einem Kühler 9 liegenden Bereich. Eine, den Motor-Ansaugluftstrom V1 führende Luftführungseinrichtung 10 ist derart nahe an einen, von einem Kühler-Luftstrom V2 überströmten Ort heran geführt, dass die Temperaturen der Motorluft sowie der durch den Kühler 9 geleiteten - und hierbei erwärmten - Luft im wesentlichen zentral erfasst werden können. In Fig.2 is shown in the form of a schematic diagram, in which way Temperature detection device 1 according to the invention in a motor vehicle can be arranged. In this embodiment, there is the first Sensor element 2 and the second sensor element 3 in a flow direction in the airstream seen behind a cooler 9 area. One that Air guiding device 10 guiding engine intake air flow V1 is so close to a place overflowed by a cooler air flow V2 that the Temperatures of the engine air and that passed through the radiator 9 - and here warmed - air can be captured essentially centrally.

Die durch das erste Sensorelement 2 und das zweite Sensorelement 3 erzeugten Messsignale können über eine Anschlusssteckereinrichtung 11 an einen fahrzeugseitig vorgesehenen Kabelbaumast weitergeleitet werden. Die Anschlusssteckereinrichtung 11 umfasst einen Koppelungsabschnitt der integral mit der Luftführungseinrichtung 10 ausgebildet ist.Those generated by the first sensor element 2 and the second sensor element 3 Measurement signals can be connected to a connector device 11 provided on the vehicle wiring harness branch. The Connector device 11 comprises a coupling section which is integral with the air guide device 10 is formed.

Die Luftführungseinrichtung 10 ist weiterhin mit einer Aufhängungseinrichtung 12 eines Kühlergebläses 13 verbunden. Diese Aufhängungseinrichtung 12 wiederum ist mit dem Kühler 9 gekoppelt. Es ist möglich, auch die zur Spannungsversorgung eines Motors 14 der Gebläseeinrichtung 13 vorgesehenen Leitungseinrichtungen über den genannten Anschlussstecker 11 an das fahrzeugseitig vorgesehene Leitungssystem anzukoppeln. Hierdurch ergibt sich ein noch weiter verringerter Verkabelungsaufwand. Alternativ hierzu ist es möglich, die beiden Sensorelemente 2, 3 über Kontakteinrichtungen die in einen Gebläseanschlussstecker integriert sind mit dem fahrzeugseitigen Leitungssystem zu koppeln. Bei dem vorangehend beschriebenen Ausführungsbeispiel ist die Sensoreinrichtung 1 an einem Strukturbauteil der Luftführungseinrichtung 10 angebracht. Die Erfindung ist jedoch nicht auf eine derartige Ausführungsform beschränkt. Beispielsweise ist es auch möglich, die Temperaturerfassungseinrichtung 1 zur kombinierten Erfassung der Motor-Ansaugluft sowie der durch einen Kühler 9 erwärmten Luft an einem der Gebläseeinrichtung 13 oder dem Kühler 9 selbst zugeordneten Strukturbauteil anzubringen.The air guiding device 10 is furthermore provided with a suspension device 12 a radiator fan 13 connected. This suspension device 12 in turn is coupled to the cooler 9. It is also possible to use the power supply a motor 14 of the blower device 13 provided line devices via the mentioned connector 11 to the vehicle-provided Coupling the line system. This results in an even further reduced Wiring. Alternatively, it is possible to use the two sensor elements 2, 3 via contact devices which are integrated in a blower connector to couple with the vehicle's wiring system. In the preceding The exemplary embodiment described is the sensor device 1 on one Structural component of the air guide device 10 attached. However, the invention is not limited to such an embodiment. For example, it is possible, the temperature detection device 1 for the combined detection of Engine intake air and the air heated by a cooler 9 at one of the Blower device 13 or the structural component assigned to the cooler 9 itself to install.

Es ist auch möglich, durch die erfindungsgemäße Temperaturerfassungseinrichtung 1 weitere Systemparameter wie beispielsweise die Kühlwassertemperatur in dem Kühler 9 zu erfassen. Eine derartige Temperaturerfassungseinrichtung 1 ist vorzugsweise an einem dem Kühler 9 zugeordneten Strukturbauteil ausgebildet. Durch die erfindungsgemäße Lösung wird es möglich, den Fahrzeugkühler, die Gebläseeinrichtung mit deren Aufhängungseinrichtung sowie die im Fahrzeugfrontbereich liegenden Komponenten der Motor-Ansaugluftführungseinrichtung 10 als eine, mit den erforderlichen Sensoreinrichtungen bestückte, vormontierte Baueinheit auszubilden die im Rahmen eines automatisierten Montagevorgangs auf vorteilhafte Weise montiert werden kann. Es ist möglich, die Anschlusssteckereinrichtung 11 derart auszubilden, dass diese im Rahmen des Einsetzens der genannten Baueinheit in das Fahrzeug selbsttätig mit den fahrzeugseitig vorgesehenen Anschlusskomponenten in Eingriff gelangt.It is also possible to use the temperature detection device according to the invention 1 further system parameters such as the cooling water temperature in the Detect cooler 9. Such a temperature detection device 1 is preferably formed on a structural component assigned to the cooler 9. The solution according to the invention makes it possible for the vehicle radiator to Blower device with its suspension device and the in Components of the engine intake air guiding device located in the front of the vehicle 10 as one, with the required Sensor devices equipped, pre-assembled unit to form the Assembled in an automated assembly process in an advantageous manner can be. It is possible to use the connector plug device 11 in this way to train them in the course of using the above-mentioned unit in the vehicle automatically with the vehicle provided Connection components engaged.

Claims (15)

Temperaturerfassungseinrichtung für eine Brennkraftmaschine mit einer Trägerstruktur (4), einem an der Trägerstruktur (4) aufgenommenen ersten Sensorelement (2), einem an der Trägerstruktur (4) aufgenommenen zweiten Sensorelement (3), einer Einrichtung zur Zuleitung zumindest eines Teilstromes (V1') eines Motoransaugluftstromes (V1) zu dem ersten Sensorelement (2) und einer Einrichtung zur Zuleitung zumindest eines Teilstromes (V2')eines durch einen Motorkühler (9) hindurchgetretenen Kühler-Luftstromes (V2) zu dem zweiten Sensorelement (3), wobei die Trägerstruktur (4) in einem Bereich angeordnet ist, in welchem die beiden Luftströme (V1, V2) zueinander benachbart verlaufen.Temperature detection device for an internal combustion engine with a Support structure (4), a first on the support structure (4) Sensor element (2), a second one accommodated on the carrier structure (4) Sensor element (3), a device for supplying at least one partial flow (V1 ') of an engine intake air flow (V1) to the first sensor element (2) and a device for supplying at least one partial flow (V2 ') through one Engine cooler (9) passed cooler air flow (V2) to the second Sensor element (3), the support structure (4) being arranged in one area, in which the two air flows (V1, V2) run adjacent to each other. Temperaturerfassungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die beiden Sensorelemente (2, 3) über die Trägerstruktur zu einer Baueinheit zusammengefasst sind.Temperature detection device according to claim 1, characterized in that the two sensor elements (2, 3) are combined to form a structural unit via the support structure. Temperaturerfassungseinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die beiden Sensorelemente (2, 3) über eine gemeinsame Verkabelung mit einem fahrzeugseitig vorgesehenen Kabelbaumast verbunden sind.Temperature detection device according to claim 1 or 2, characterized in that the two sensor elements (2, 3) are connected via a common wiring to a cable branch provided on the vehicle. Temperaturerfassungseinrichtung nach Anspruch 3, dadurch gekennzeichnet, dass jene den beiden Sensorelementen zugeordnete Verkabelung über eine gemeinsame Anschlusssteckerstruktur (11) mit dem fahrzeugseitigen Kabelbaumast verbunden ist.Temperature detection device according to claim 3, characterized in that the cabling assigned to the two sensor elements is connected to the vehicle-side cable harness via a common connector structure (11). Temperaturerfassungseinrichtung nach wenigstens einem der Ansprüche 1 bis 4 dadurch gekennzeichnet, dass die Anschlusssteckerstruktur (11) integral mit der Trägerstruktur (4) ausgebildet ist. Temperature detection device according to at least one of claims 1 to 4, characterized in that the connector structure (11) is integrally formed with the support structure (4). Temperaturerfassungseinrichtung nach wenigstens einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Trägerstruktur (4) aus einem Kunststoffmaterial gefertigt ist.Temperature detection device according to at least one of claims 1 to 5, characterized in that the carrier structure (4) is made of a plastic material. Temperaturerfassungseinrichtung nach wenigstens einem der Ansprüche 1 bis 6 dadurch gekennzeichnet, dass die Trägerstruktur (4) eine Trennwand bildet, welche die beiden Luftströme (V1', V2') zumindest vor deren Überstreifen der Sensorelemente (2, 3) voneinander trennt.Temperature detection device according to at least one of claims 1 to 6, characterized in that the support structure (4) forms a partition which separates the two air streams (V1 ', V2') at least before the sensor elements (2, 3) slip over them. Temperaturerfassungseinrichtung nach wenigstens einem der Ansprüche 1 bis 7 dadurch gekennzeichnet, dass die Trägerstruktur (4) integral mit einem Luftführungsorgan ausgebildet ist.Temperature detection device according to at least one of claims 1 to 7, characterized in that the carrier structure (4) is integrally formed with an air guide member. Temperaturerfassungseinrichtung nach wenigstens einem der Ansprüche 1 bis 8 dadurch gekennzeichnet, dass die Trägerstruktur (4) integral mit einer Motoransaugluftführung ausgebildet ist.Temperature detection device according to at least one of claims 1 to 8, characterized in that the carrier structure (4) is integrally formed with an engine intake air duct. Temperaturerfassungseinrichtung nach wenigstens einem der Ansprüche 1 bis 9 dadurch gekennzeichnet, dass die Trägerstruktur (4) in eine Gebläseaufhängung (12) integriert ist.Temperature detection device according to at least one of claims 1 to 9, characterized in that the carrier structure (4) is integrated in a blower suspension (12). Temperaturerfassungseinrichtung nach wenigstens einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Trägerstruktur (4) an einem Kühlerwasserkasten vorgesehen ist.Temperature detection device according to at least one of claims 1 to 10, characterized in that the support structure (4) is provided on a cooler water tank. Temperaturerfassungseinrichtung nach wenigstens einem der Ansprüche 1 bis 11 dadurch gekennzeichnet, dass die Sensorelemente (2, 3) zueinander benachbart angeordnet sind.Temperature detection device according to at least one of claims 1 to 11, characterized in that the sensor elements (2, 3) are arranged adjacent to one another. Temperaturerfassungseinrichtung nach wenigstens einem der Ansprüche 1 bis 12 dadurch gekennzeichnet, dass die Trägerstruktur (4) in einem Bereich angeordnet ist, in welchem eine Leitungseinrichtung zur Führung eines Motor-Ansaugluftstromes (V1) an einem Kühlergebläse (13) vorbeigeführt ist. Temperature detection device according to at least one of claims 1 to 12, characterized in that the support structure (4) is arranged in an area in which a line device for guiding an engine intake air flow (V1) is guided past a radiator fan (13). Temperaturerfassungseinrichtung nach Anspruch 13 dadurch gekennzeichnet, dass in dem genannten Bereich die Leitungseinrichtung mit dem Motorkühler (9) oder einem Teil der des Kühlergebläses (13) gekoppelt ist.Temperature detection device according to claim 13, characterized in that in the said area, the line device is coupled to the engine cooler (9) or a part of that of the radiator fan (13). Temperaturerfassungseinrichtung nach wenigstens einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass ein weiteres Sensorelement vorgesehen ist, zur Erfassung der Kühlwassertemperatur, und dass dieses Sensorelement ebenfalls über die gemeinsame Verkabelung an den fahrzeugseitigen Kabelbaum angeschlossen ist.Temperature detection device according to at least one of claims 1 to 14, characterized in that a further sensor element is provided for detecting the cooling water temperature, and that this sensor element is also connected to the vehicle-side wiring harness via the common wiring.
EP02007544A 2001-05-22 2002-04-03 Temperature sensor for an internal combustion engine Expired - Lifetime EP1260686B1 (en)

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DE10124852 2001-05-22
DE10124852A DE10124852A1 (en) 2001-05-22 2001-05-22 Temperature detection device for an internal combustion engine

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KR100570325B1 (en) * 2004-01-07 2006-04-11 주식회사 케피코 rationality check method of oil temperature sensor

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US20020177937A1 (en) 2002-11-28
EP1260686A3 (en) 2004-12-01
US6644850B2 (en) 2003-11-11
DE10124852A1 (en) 2002-12-05
DE50212624D1 (en) 2008-09-25

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