EP0143260A2 - Agencement de réglage pour le changement de remplissage en fonction de la température d'un accouplement hydro-dynamique - Google Patents

Agencement de réglage pour le changement de remplissage en fonction de la température d'un accouplement hydro-dynamique Download PDF

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Publication number
EP0143260A2
EP0143260A2 EP84111547A EP84111547A EP0143260A2 EP 0143260 A2 EP0143260 A2 EP 0143260A2 EP 84111547 A EP84111547 A EP 84111547A EP 84111547 A EP84111547 A EP 84111547A EP 0143260 A2 EP0143260 A2 EP 0143260A2
Authority
EP
European Patent Office
Prior art keywords
control
valve
designed
control unit
arrangement according
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
EP84111547A
Other languages
German (de)
English (en)
Other versions
EP0143260A3 (en
EP0143260B1 (fr
Inventor
Manfred Dr. Glöckner
Gerd. Wallenfang
Walter Dipl.-Ing. Nau
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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
Priority claimed from DE19833335259 external-priority patent/DE3335259A1/de
Priority claimed from DE19833335257 external-priority patent/DE3335257A1/de
Priority claimed from DE19833335258 external-priority patent/DE3335258A1/de
Application filed by Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Priority to AT84111547T priority Critical patent/ATE46389T1/de
Publication of EP0143260A2 publication Critical patent/EP0143260A2/fr
Publication of EP0143260A3 publication Critical patent/EP0143260A3/de
Application granted granted Critical
Publication of EP0143260B1 publication Critical patent/EP0143260B1/fr
Expired legal-status Critical Current

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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
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
    • F01P7/042—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using fluid couplings

Definitions

  • the invention relates to a control arrangement for temperature-dependent change in charge of a hydrodynamic clutch with a controllable inlet line and a constantly open drain of constant cross-section for the cooling fan drive of an internal combustion engine, with at least one temperature sensor on the internal combustion engine, a control unit for converting measured values and an electromagnetic control valve in the working medium circuit of the clutch.
  • the control behavior of this arrangement has a PD characteristic.
  • the invention is based, on the one hand, to simplify the circuit logic in a control arrangement according to the preamble of claim 1 and, on the other hand, to achieve improved control behavior.
  • control unit is designed as a two-point circuit with a delayed yielding feedback, which uses the setpoint deviation as a control variable for controlling the control valve.
  • the idea essential to the invention can be seen in the fact that, without a separate integration stage, the controller obtains a PID behavior in that the control unit is designed as a two-point circuit with yielding delayed feedback.
  • the feedback is advantageously adapted in terms of its dynamic behavior to the controlled system of the hydraulic clutch, cooling fan and internal combustion engine in such a way that a switching cycle period of about two seconds occurs in the middle working range.
  • a circuit is provided which enables a substantially stepless regulation of the cooling fan drive with simple means.
  • the temperature sensors each indicate setpoint deviations of the measured values and that the control unit is designed for maximum value detection among the setpoint deviations of the measured values, the largest of the input signals being used to form the control variable for the control valve. In this way, inertia in the control system can be avoided in a cheap and simple manner, without the circuitry being particularly large.
  • control valve In order to reduce the number of switching operations that can lead to wear and failure and to achieve stable operating points, a further development of the invention provides for the control valve to be designed as a control valve for releasing partial cross-sections, the control unit generating a control voltage corresponding to the large setpoint deviations .
  • mean states can fill the hydrodynamic coupling under V ER- avoidance of continuous switching operations be achieved, which set up stationary operating conditions.
  • a spring-loaded solenoid valve can be used as the control valve, the flow characteristic of which can be influenced via the spring detection.
  • this is designed as a control valve with a stepper motor.
  • a certain shift stage and an associated valve position controlled.
  • the characteristic curve can advantageously be influenced as a function of the temperature by specifying various switching steps.
  • a plurality of directional control valves are provided as control valves, preferably with cross-sections stepped one below the other, the control unit being designed to control a single control valve or a combination of control valves.
  • a single valve with a corresponding cross-section or a suitable combination of the valves with a suitable overall cross-section is opened.
  • a constant switching of the control arrangement for opening and closing the valve to achieve an average flow time is avoided in this way.
  • D a at the prevailing operating conditions of an internal combustion engine (high temperature, contamination, excessive vibration) electromagnetic switching elements are usually subjected to a strong susceptibility, fixed by oral operating points, the susceptibility to interference is reduced.
  • the control arrangement compares the temperature value displayed by a measurement sensor with an assigned setpoint and determines the switching of the valves in the suitable combination after the setpoint deviation of the temperature.
  • valves with the same flow cross-section can be used as directional control valves, which, depending on the operating state, are opened with an increasing number as the cooling air requirement increases.
  • control unit is designed to correct the significant setpoint deviation of the temperature as a function of further operating parameters and to represent the valve adjustment on the basis of a corrected setpoint deviation of the temperature.
  • further operating parameters of the internal combustion engine can also be included in the cooling fan control.
  • control valve in the inlet to the coupling and to provide the outlet with a constant cross section, either a normally open control valve or, in the case of a normally closed control valve, a normally open safety device Unit valve is provided in the bypass to the control valve. In the event of a power failure, the cooling fan drive is guaranteed at maximum speed.
  • the internal combustion engine 1 has a cooling air blower 2 with a corresponding casing.
  • the cooling air blower is driven via the secondary side of a hydrodynamic coupling 3, the primary side of which, in the case of a mechanical drive 4, is connected to the crank drive 5 of the internal combustion engine.
  • the hydrodynamic coupling is filled via an inflow line 6, which is fed by an oil pump 7.
  • the oil pump 7 is drive-connected to the internal combustion engine via the crank mechanism 5. Further points the hydrodynamic coupling 3 has a discharge line 8 of constant cross-section, via which the oil fed in to fill the coupling is returned to the oil sump of the oil pump 7.
  • the control unit 10 comprises several components.
  • the temperature sensors 11 to 13, which can be supplemented by a further sensor as required, are connected to a maximum value detecting unit 14 (FIG. 2).
  • Raturrid empe- with several T enables more accurate monitoring of the internal combustion engine, as can develop independently of the temperature of other components depending on load and engine speed as the temperature of the lubricant.
  • the maximum value detection unit 14 the output signal of each sensor is compared with an assigned target value. The largest setpoint deviation is passed on as an output signal and used to form a control signal.
  • the temperature sensors are preferably designed as elements, the resistance of which changes as a function of temperature and which are combined with a series resistor which is adapted to the temperature level.
  • the voltage drops to be tapped directly at a temperature sensor are compared directly with one another in the maximum value detection unit 14, the largest value being used as the output signal to form the control signal.
  • controller 15 there is a setpoint / actual value comparison, according to which the control of the control valve 9 is determined.
  • the control behavior is determined in detail by the two-point controller 16 and the feedback 17 which gives in with a delay.
  • the output signal of the PID two-point controller thus formed is used directly via an output stage 18 to control the electromagnetic control valve 9 in the inflow line 6 for the hydrodynamic coupling.
  • the control valve 9 is designed as a 2/2-way valve, which is preferably opened in the de-energized state.
  • FIG. 3 schematically shows the structure of a control arrangement for controlling an electromagnetic control valve 9, which is not designed as a 2/2-way valve but as a control valve 25.
  • all temperature sensors 11 to 13 are connected to the maximum value detection device 14, which picks out a single value of a temperature sensor recognized as significant. Since the temperature values of the individual measuring points are to be regarded as critical at different absolute heights, according to the invention each measuring transducer is designed in such a way that it generates an output variable related to an assigned temperature setpoint value, which is then directly comparable with the output values of the other measuring transducers.
  • this significant setpoint deviation is extracted and the control variable for the control valve is formed according to it.
  • the output signal of the maximum value detection unit 14 is fed to a control unit 22 with a PD character, in which a control signal is generated as a function of a predetermined target value.
  • This control signal is fed via a characteristic curve adaptation stage 19 to a control stage 20 which controls the control magnet 21 of the control valve 23.
  • the characteristic curve can be adapted to the characteristic of the control magnet 21, the control valve 9 and / or to the engine cooling.
  • control unit 10 is only shown from stage 19 for adapting the characteristic curve, which is to connect to the maximum value detection unit 14, not shown.
  • control valve 23 is actuated by a direct current motor 24, the valve position being transmitted to a position controller 26 via a displacement transducer 25.
  • the setpoint signal supplied to the positioner 23 via the characteristic curve adaptation stage 15 is compared in the positioner with the actual signal reported by the displacement transducer 25 and, depending on the comparison, a control signal is formed with which the DC motor 24 is controlled via an output stage 18.
  • the signal of the characteristic curve adjustment stage 19 is fed to a control logic 26, the output signal of which controls a stepper motor 27 of the control valve 23 via an output stage 18 in accordance with the present target signal.
  • control valve 9 is designed as a parallel connection of a plurality of 2/2-way valves 9.1, 9.2,... To 9.n.
  • the maximum value detection unit 14 picks out a significant temperature value or its deviation from a predetermined target value and forwards it as an output signal to a control unit 22.
  • the control unit 22 compares the output signal of the maximum value detection unit 14 as an actual value with a predetermined target value and, depending on this comparison, forms a control signal which is fed analogously to an analog / digital converter 29 which controls the individual valves 9.1, 9.2, ... , 9.n in different combinations according to the control signal present.
  • the control valve 9 composed of the individual valves 9.1 to 9.n is activated in such a way that the resulting flow cross section in the feed line 6 corresponds to the absolute value of the control signal formed by the control unit 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Temperature (AREA)
EP84111547A 1983-09-29 1984-09-27 Agencement de réglage pour le changement de remplissage en fonction de la température d'un accouplement hydro-dynamique Expired EP0143260B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84111547T ATE46389T1 (de) 1983-09-29 1984-09-27 Regelungsanordnung zur temperaturabhaengigen fuellungsaenderung einer hydrodynamischen kupplung.

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3335257 1983-09-29
DE19833335259 DE3335259A1 (de) 1983-09-29 1983-09-29 Regelungsanordnung zur temperaturabhaengigen fuellungsaenderung einer hydrodynamischen kupplung
DE19833335257 DE3335257A1 (de) 1983-09-29 1983-09-29 Regelungsanordnung zur temperaturabhaengigen fuellungsaenderung einer hydrodynamischen kupplung
DE19833335258 DE3335258A1 (de) 1983-09-29 1983-09-29 Regelungsanordnung zur temperaturabhaengigen fuelllungsaenderung einer hydrodynamischen kupplung
DE3335258 1983-09-29
DE3335259 1983-09-29

Publications (3)

Publication Number Publication Date
EP0143260A2 true EP0143260A2 (fr) 1985-06-05
EP0143260A3 EP0143260A3 (en) 1986-06-04
EP0143260B1 EP0143260B1 (fr) 1989-09-13

Family

ID=27191307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84111547A Expired EP0143260B1 (fr) 1983-09-29 1984-09-27 Agencement de réglage pour le changement de remplissage en fonction de la température d'un accouplement hydro-dynamique

Country Status (2)

Country Link
EP (1) EP0143260B1 (fr)
DE (1) DE3479752D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482921A3 (en) * 1990-10-24 1993-03-24 Thermo King Corporation Transport refrigeration system
RU2252324C2 (ru) * 2003-05-22 2005-05-20 ООО "Волгоградская машиностроительная компания "ВгТЗ" Система охлаждения двигателя транспортного средства
US7387591B2 (en) 2004-10-12 2008-06-17 Usui Kokusai Sangyo Kaisha Limited Control method for external control type fan clutch

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2356580A (en) * 1938-12-03 1944-08-22 Bailey Meter Co Control system
GB844009A (en) * 1957-08-20 1960-08-10 Tatra Np Improvements in and relating to internal combustion engines
US3147635A (en) * 1962-01-31 1964-09-08 Gen Motors Corp Transmission
CA857509A (en) * 1968-05-22 1970-12-01 Canadian National Railway Company Water temperature control for diesel engines
US3905394A (en) * 1974-04-12 1975-09-16 Digital Dynamics Inc Flow control system
DE2938706A1 (de) * 1979-09-25 1981-04-09 Klöckner-Humboldt-Deutz AG, 5000 Köln Fuellungsregelung fuer eine hydrodynamische kupplung
DE3043484A1 (de) * 1980-11-18 1982-07-08 Klöckner-Humboldt-Deutz AG, 5000 Köln Vorrichtung zur regelung der kuehlung einer luftgekuehlten brennkraftmaschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482921A3 (en) * 1990-10-24 1993-03-24 Thermo King Corporation Transport refrigeration system
RU2252324C2 (ru) * 2003-05-22 2005-05-20 ООО "Волгоградская машиностроительная компания "ВгТЗ" Система охлаждения двигателя транспортного средства
US7387591B2 (en) 2004-10-12 2008-06-17 Usui Kokusai Sangyo Kaisha Limited Control method for external control type fan clutch
DE102005048859B4 (de) * 2004-10-12 2017-06-14 Usui Kokusai Sangyo Kaisha Ltd. Gebläsekupplung-Steuer- bzw. -Regelverfahren nach Art einer externen Steuerung bzw. Regelung

Also Published As

Publication number Publication date
EP0143260A3 (en) 1986-06-04
EP0143260B1 (fr) 1989-09-13
DE3479752D1 (en) 1989-10-19

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