DE4337717A1 - Control device for cooling circuits of internal combustion engines with throttle valves or directional control valves which can assume two positions - Google Patents

Control device for cooling circuits of internal combustion engines with throttle valves or directional control valves which can assume two positions

Info

Publication number
DE4337717A1
DE4337717A1 DE19934337717 DE4337717A DE4337717A1 DE 4337717 A1 DE4337717 A1 DE 4337717A1 DE 19934337717 DE19934337717 DE 19934337717 DE 4337717 A DE4337717 A DE 4337717A DE 4337717 A1 DE4337717 A1 DE 4337717A1
Authority
DE
Germany
Prior art keywords
valve
control device
valves
switched
component
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Withdrawn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
DE19934337717
Other languages
German (de)
Inventor
Peter Graf
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.)
GRAF PETER VON INGELHEIM
Original Assignee
GRAF PETER VON INGELHEIM
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 GRAF PETER VON INGELHEIM filed Critical GRAF PETER VON INGELHEIM
Priority to DE19934337717 priority Critical patent/DE4337717A1/en
Publication of DE4337717A1 publication Critical patent/DE4337717A1/en
Withdrawn legal-status Critical Current

Links

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
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • 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
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P2007/143—Controlling of coolant flow the coolant being liquid using restrictions
    • 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
    • F01P2025/46—Engine parts 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

The invention relates to a control device for cooling circuits of internal combustion engines with throttle valves or directional control valves which can assume two positions. Here, the valve is controlled by means of at most two thermal sensors, one of which measures the component temperature Tcomponent and the other measures the coolant temperature Twater, and the control device is switched in such a way that the valve is switched in such a way that when: Twater < Tw - delta and Tcomponent < Tm - epsilon then: (valve closed> and when: Twater > Tw + delta or Tcomponent > Tm + epsilon then: (valve open).

Description

Die Erfindung bezieht sich auf eine Steuerungseinrichtung für Kühlkreisläufe von Verbrennungsmotoren mit Drossel- oder Wegeventilen, die zwei Positionen einnehmen können.The invention relates to a control device for Cooling circuits of internal combustion engines with throttle or directional valves, that can take two positions.

Regelbare Kühlkreisläufe mit Ventilen sind grundsätzlich bekannt. In der deutschen Offenlegungsschrift DE 37 36 063 C1 ist ein Kühlkreislauf beschrieben, bei dem ein Wegeventil einen Bypass öffnen kann, um so einen Teil des Kühlmittelstroms am Motor vorbeizuleiten.Adjustable cooling circuits with valves are generally known. In the German patent application DE 37 36 063 C1 is a Cooling circuit described in which a directional valve has a bypass can open in order to bypass part of the coolant flow past the engine.

In der deutschen Offenlegungsschrift DE 41 17 532 A1 ist ein Kühlkreislauf mit Drosselventilen beschrieben.In German published patent application DE 41 17 532 A1 there is a Cooling circuit with throttle valves described.

In keiner der beiden Offenlegungen ist eine Regelstrategie beschrieben, die mit einfachen und damit kostengünstigen Ventilen realisierbar ist.Neither of the two disclosures describes a control strategy with simple and therefore inexpensive valves is feasible.

Hier will die Erfindung Abhilfe schaffen. Die Erfindung, wie sie gekennzeichnet ist, ermöglicht mit einfachen und damit kostengünstigen Aggregaten eine wirksame Kühlwasserregelung.The invention seeks to remedy this. The invention as it is is marked, enables with simple and therefore inexpensive Effective cooling water control.

Dies wird dadurch erreicht, daß einfache Ventile, die nur zwei Positionen (auf - zu; großer Durchflußquerschnitt - kleiner Durchflußquerschnitt) annehmen können, wie z. B. Magnet-Ventile eingesetzt werden, die von einem an einer Meßstelle am Motorblock angeordneten Thermosensor so gesteuert werden, daß:This is achieved in that simple valves that only two Positions (open - closed; large flow cross section - smaller Flow cross section) can assume such. B. solenoid valves be used by one at a measuring point on the engine block arranged thermal sensor can be controlled so that:

  • - bei niedriger Bauteil- und niedriger Kühlmitteltemperatur am Temperatursensor d. h. wenn für die Temperatur TBauteil gilt, TBauteil < Tm - ε und für die Temperatur TWasser gilt TWasser < Tw - δ das Ventil geschlossen wird- that is, if the component is valid at low component and low coolant temperature at the temperature sensor for the temperature T, T component <T m - ε and the temperature T water T applies water <T w - δ the valve is closed
  • - bei hoher Bauteiltemperatur oder hoher Kühlmitteltemperatur am Temperatursensor d. h. wenn TBauteil < Tm + ε oder TWasser < Tw + δ das Ventil geöffnet wird.- at high component temperature or high coolant temperature at the temperature sensor, ie when T component <T m + ε or T water <T w + δ the valve is opened.

Regelungen, bei denen mit stufenlos verstellbaren Drosseln eine Regelung der Kühlmittelströme realisiert werden sollen, können zwar eine Vielzahl von Einflußgrößen verarbeiten um den jeweils optimalen Punkt zu verarbeiten, sie sind aber auch sehr aufwendig.Regulations in which a continuously variable throttle Control of the coolant flows can be realized process a large number of influencing variables around each optimal point to process, but they are also very expensive.

So ist zur Optimierung der Kühlmittelströme die Bauteiltemperatur, die Kühlmitteltemperatur, die Kühlmittelgeschwindigkeit oder die Pumpendrehzahl, der Kühlmitteldruck und die Drosselstellung zu berücksichtigen.So to optimize the coolant flows, the component temperature, the coolant temperature, the coolant speed or the pump speed, the coolant pressure and the throttle position to consider.

Dies erfordert neben einer Vielzahl von Sensoren für Bauteil- und Kühlmitteltemperatur, von Kühlmittelgeschwindigkeit, -druck und Pumpendrehzahl und von Drosselstellung auch eine aufwendige Elektronik. Dies macht die ganze Kühlmittelsteuerung so aufwendig, daß sie unwirtschaftlich wird. In addition to a variety of sensors for component and Coolant temperature, coolant speed, pressure and Pump speed and throttle position also a complex Electronics. This makes the whole coolant control so complex that it becomes uneconomical.  

Die erfindungsgemäße Regelung verarbeitet maximal zwei Einflußgrößen, um die zwei Positionen des Steuerelements Ventil einzustellen (Binärschaltung).The control according to the invention processes a maximum of two influencing variables, to adjust the two positions of the valve control (Binary circuit).

Damit benötigt diese Schaltung ein einfaches Magnetventil und höchstens zwei Temperaturschalter, die einen Stromfluß zum Ventilmagneten ein- oder ausschalten.This circuit requires a simple solenoid valve and A maximum of two temperature switches that flow current to the valve magnet switch on or off.

Damit wird eine preiswerte Regelung der Kühlmittelgeschwindigkeit möglich.This is an inexpensive control of the coolant speed possible.

In Fig. 1 ist eine erfindungsgemäße Regelung der Kühlmittelgeschwindigkeit gezeigt.In Fig. 1 a system according to the invention the coolant velocity is shown.

Im Kühlkreislauf 1 von der Pumpe 2 durch die Kühlkanäle des Motors 3 sitzt ein Drosselventil 4 mit einem Elektromagneten, der das Drosselventil beim Einschalten verschließt und beim Ausschalten öffnet.In the cooling circuit 1 of the pump 2 through the cooling channels of the motor 3, there is a throttle valve 4 with an electromagnet, which closes the throttle valve when it is switched on and opens when it is switched off.

Die Thermosensoren 5, 6 messen die Bauteil- und die Kühlmitteltemperatur. Wenn eine der beiden Temperaturen zu hoch wird, wird der zum jeweiligen Sensor 5, 6 zugehörige Schalter 7, 8 in Offenstellung gebracht und der Magnet des Ventils ausgeschaltet. Damit wird das Drosselventil 4 geöffnet und die Kühlmittelgeschwindigkeit erhöht.The thermal sensors 5 , 6 measure the component and the coolant temperature. If one of the two temperatures becomes too high, the switch 7 , 8 associated with the respective sensor 5 , 6 is brought into the open position and the magnet of the valve is switched off. This opens the throttle valve 4 and increases the coolant speed.

Damit bei Ausfall der Stromversorgung der Motor keinen Schaden nimmt, wird der Elektromagnet des Ventils so geschaltet, daß bei Ausschalten der Durchflußquerschnitt des Ventils maximal und bei Einschalten minimal wird.So if the power supply fails, the motor will not be damaged takes, the solenoid of the valve is switched so that at Switch off the flow cross-section of the valve maximum and at Turning on becomes minimal.

Claims (2)

1. Steuerungseinrichtung für Kühlkreisläufe bestehend aus mindestens einem Ventil und Sensoren, mit denen für die Ventileinstellung relevante Größen festgestellt werden und einer Steuerungseinrichtung für das Ventil dadurch gekennzeichnet, daß
1. das Ventil 4 durch Ausschalten und Einschalten eines Stromes zwei Stellungen einnehmen kann,
2. höchstens jeweils zwei Temperatursensoren 5, 6 pro Ventil vorhanden sind, von denen der eine 5 die Temperatur TBauteil eines Motorbauteils und der andere 6 die Kühlmitteltemperatur TWasser an einer bestimmten Stelle mißt und
3. aufgrund dieser Meßwerte das Ventil 4 so geschaltet wird, daß wenn gilt: - TWasser < Tw - δ und TBauteil < Tm - ε dann: (Ventil zu)- TWasser < Tw + δ und TBauteil < Tm - ε dann: (Ventil auf)1. Control device for cooling circuits consisting of at least one valve and sensors with which parameters relevant to the valve setting are determined and a control device for the valve, characterized in that
1. the valve 4 can assume two positions by switching off and on a current,
2. A maximum of two temperature sensors 5 , 6 are present per valve, one of which 5 measures the temperature T component of an engine component and the other 6 measures the coolant temperature T water at a specific point and
3. On the basis of these measured values, the valve 4 is switched so that if: - T water <T w - δ and T component <T m - ε then: (valve closed) - T water <T w + δ and T component < T m - ε then: (valve open) 2. Steuerungseinrichtung unter Patentanspruch 1, dadurch gekennzeichnet, daß das Ventil 4 ein Ventil mit einem Elektromagneten ist, welches so geschaltet ist, daß bei Ausschalten des Elektromagneten der Durchflußquerschnitt des Ventils für das das zu kühlende Bauteil durchströmende Kühlmittel maximal ist und bei Einschalten des Elektromagneten der Durchflußquerschnitt des Ventils auf klein gestellt wird.2. Control device according to claim 1, characterized in that the valve 4 is a valve with an electromagnet which is switched so that when the electromagnet is switched off the flow cross-section of the valve for the coolant flowing through the component to be cooled is maximum and when the electromagnet is switched on the flow cross section of the valve is set to small.
DE19934337717 1993-11-05 1993-11-05 Control device for cooling circuits of internal combustion engines with throttle valves or directional control valves which can assume two positions Withdrawn DE4337717A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19934337717 DE4337717A1 (en) 1993-11-05 1993-11-05 Control device for cooling circuits of internal combustion engines with throttle valves or directional control valves which can assume two positions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19934337717 DE4337717A1 (en) 1993-11-05 1993-11-05 Control device for cooling circuits of internal combustion engines with throttle valves or directional control valves which can assume two positions

Publications (1)

Publication Number Publication Date
DE4337717A1 true DE4337717A1 (en) 1995-05-11

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ID=6501832

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19934337717 Withdrawn DE4337717A1 (en) 1993-11-05 1993-11-05 Control device for cooling circuits of internal combustion engines with throttle valves or directional control valves which can assume two positions

Country Status (1)

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DE (1) DE4337717A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10224063A1 (en) * 2002-05-31 2003-12-11 Daimler Chrysler Ag Method for heat regulation of an internal combustion engine for vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10224063A1 (en) * 2002-05-31 2003-12-11 Daimler Chrysler Ag Method for heat regulation of an internal combustion engine for vehicles

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