EP0767299A2 - Vanne thermostatique pour le circuit de refroidissement d'un moteur à combustion interne - Google Patents

Vanne thermostatique pour le circuit de refroidissement d'un moteur à combustion interne Download PDF

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Publication number
EP0767299A2
EP0767299A2 EP96115636A EP96115636A EP0767299A2 EP 0767299 A2 EP0767299 A2 EP 0767299A2 EP 96115636 A EP96115636 A EP 96115636A EP 96115636 A EP96115636 A EP 96115636A EP 0767299 A2 EP0767299 A2 EP 0767299A2
Authority
EP
European Patent Office
Prior art keywords
valve
short
circuit
expansion element
throttle
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
EP96115636A
Other languages
German (de)
English (en)
Other versions
EP0767299A3 (fr
EP0767299B1 (fr
Inventor
Barbu Frunzetti
Peter Leu
Heinz Lemberger
Gerhart Huemer
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.)
Bayerische Motoren Werke AG
Behr Thermot Tronik GmbH
Original Assignee
Bayerische Motoren Werke AG
Behr Thermot Tronik GmbH
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 Bayerische Motoren Werke AG, Behr Thermot Tronik GmbH filed Critical Bayerische Motoren Werke AG
Publication of EP0767299A2 publication Critical patent/EP0767299A2/fr
Publication of EP0767299A3 publication Critical patent/EP0767299A3/fr
Application granted granted Critical
Publication of EP0767299B1 publication Critical patent/EP0767299B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed

Definitions

  • the invention relates to a thermostatic valve of the type specified in the preamble of claim 1.
  • thermostatic valves are common and are known to be used in series engines to control the respective liquid cooling circuit.
  • the expansion element is essentially heated via the inner coolant circulation at least until the main valve begins to open.
  • the heated coolant flowing to the thermostat from an inlet channel of the short-circuit line of the inner coolant circuit, which is openly controlled by the short-circuit valve, is directed according to DE-A 31 38 368 via openings in the short-circuit valve to the expansion element to promote the control quality.
  • the invention has for its object to improve a thermostat of the type described in such a way that its effect on the expansion element of the thermostatic valve is increased when there is a direct flow or flow when the coolant circulates substantially (short-circuit operation).
  • a thermostat with a short-circuit valve controlling the flow cross section at the mouth of an inlet channel of the short-circuit line it is proposed that the mouth of the inlet channel is assigned a nozzle surrounding the short-circuit valve as an additional device with an outflow opening directed towards the expansion element.
  • the advantage of this configuration is in particular the simple design of the nozzle.
  • the additional device comprises a throttle valve with throttle openings, which is guided in an elastically flexible manner and acts on an inlet channel of the short-circuit line, and a nozzle of simple design enclosing the short-circuit valve on the expansion side an outlet opening directed towards the expansion element.
  • the additional device elastically resiliently pressurizes an inlet channel of the short-circuit line guided releasing throttle valve with throttle openings, wherein the short-circuit valve has openings directed towards the expansion element such that the short-circuit valve closes the throttle openings of the throttle valve from a predetermined opening stroke of the main valve (Fig. 3, 4, 5).
  • a thermostatic valve 1 for the cooling circuit of a liquid-cooled internal combustion engine not shown in each case, shown in FIGS. 1 to 4, comprises an expansion element 2, which serves as a servomotor of a main valve 3 in an external coolant circuit for regulating the temperature of the coolant.
  • This arrangement serves that the short-circuit valve 10 in a predetermined In a manner controlled by the opening stroke of the main valve 3 caused by the expansion element 2, a flow cross section of an inlet channel 11 of a short-circuit line 11 'of the inner coolant circuit closes.
  • the short-circuit valve 10 which is usually relatively slightly spaced from the mouth 12 of the inlet channel 11 in the open position - such as in Figure 1 - the flow of the heated coolant with internal coolant circulation or in short-circuit operation from a direct action of the direct action of the expansion element 2 is reached in a short way significantly.
  • an additional device for directing an increased effectiveness of the coolant flow of the inner coolant circulation downstream of the short-circuit valve 10, which is in an open position, onto the expansion element 2 provided.
  • the mouth 12 of the inlet channel 11 is a nozzle 13 enclosing the short-circuit valve 10 as an additional device with an on the expansion element 2 directed outflow opening 14 assigned as a flow control device.
  • a throttle valve 16 with throttle openings 15, which releases the supply duct 11 of the short-circuit line 11 'under elastic pressure, is provided as an additional device, the throttle valve 16 slidingly guided on the extension 9 having a nozzle 17 surrounding the short-circuit valve 10 on the expansion element side is assigned as a further part of the additional device with an outlet opening 18 directed towards the expansion element 2.
  • the throttle openings 15 in the throttle valve 16, which is known to serve as a warm-up valve, can be closed by the plate-like short-circuit valve 10 from a predetermined opening stroke of the main valve 3.
  • each thermostatic valve 1 is equipped according to the invention with a pot-shaped throttle valve 20 as an additional device, each throttle valve 20 having throttle openings 19 arranged in a bottom region 23 adjacent to the pot wall 22.
  • the short-circuit valve 10 designed according to the invention as a poppet valve and guided to the pot wall 22 with a relatively small circumferential clearance, has the openings 21 provided close to a concentrically arranged guide bush 24.
  • the short-circuit valve 10 comprises a sealing ring 25 which leads to the pot wall 22 with relatively no circumferential play and which is connected to a centrally arranged guide bushing 26 via a cone section 27, which advantageously has the effective effect Flow directs to openings 21 arranged in the transition region from the conical section 27 and the guide bush 26.
  • the improved direct inflow or flow around the expansion element 2 in short-circuit operation or in the case of internal coolant circulation with a coolant temperature increased by means of a throttled flow can advantageously be used with a thermostat 1 for map-controlled cooling, for which the expansion element 2 is additionally equipped with an electric heating device 31.
  • This can advantageously be operated in an energy-saving manner due to the fact that the expansion or rinsing of the expansion element increases the effectiveness according to the invention.
  • FIG. 5 shows a preferably simple embodiment of an additional device formed according to the invention from a throttle valve 28 and a short-circuit valve 10, both valves 10, 28 each being designed in the manner of a plate.
  • the valves 10, 28, for example on a housing extension 29 of an expansion element which is supported in a known manner via the control pin on the machine side, are arranged such that they can move relative to one another in such a way that the throttle valve 28 slides on a guide bush 30 facing away from the expansion element on the short-circuit valve 10.
  • the throttle valve 28 assigned to the inlet duct 11 has throttle openings 19 arranged on a pitch circle near the duct wall, whereas the short-circuit valve 10, in contrast, has openings 21 arranged radially inward near the guide bush 30.
  • a targeted flow against the expansion element along its housing extension 29 is additionally achieved with the advantage of rapid heating of the expansion element (not shown) containing a wax element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Temperature-Responsive Valves (AREA)
EP96115636A 1995-10-05 1996-09-30 Vanne thermostatique pour le circuit de refroidissement d'un moteur à combustion interne Expired - Lifetime EP0767299B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19537068 1995-10-05
DE19537068A DE19537068A1 (de) 1995-10-05 1995-10-05 Thermostatventil für den Kühlkreislauf einer Brennkraftmaschine

Publications (3)

Publication Number Publication Date
EP0767299A2 true EP0767299A2 (fr) 1997-04-09
EP0767299A3 EP0767299A3 (fr) 1998-08-19
EP0767299B1 EP0767299B1 (fr) 2003-07-30

Family

ID=7774070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96115636A Expired - Lifetime EP0767299B1 (fr) 1995-10-05 1996-09-30 Vanne thermostatique pour le circuit de refroidissement d'un moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP0767299B1 (fr)
DE (2) DE19537068A1 (fr)
ES (1) ES2203663T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004046516A1 (fr) * 2002-11-16 2004-06-03 Daimlerchrysler Ag Soupape thermostatique destinee a un systeme de refroidissement d'un moteur a combustion interne
EP2090763A1 (fr) * 2008-02-14 2009-08-19 Peugeot Citroen Automobiles SA Circuit de refroidissement moteur

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19824422A1 (de) * 1998-05-30 1999-12-02 Bayerische Motoren Werke Ag Thermostatventil im Kühlkreislauf einer Brennkraftmaschine

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946943A (en) * 1974-10-08 1976-03-30 Toyota Jidosha Kogyo Kabushiki Kaisha Cooling system of an internal combustion engine incorporating a by-pass flow control system
JPS5620879A (en) * 1979-07-25 1981-02-26 Toyota Motor Corp Thermosensitive valve
DE3138368A1 (de) * 1981-09-26 1983-04-21 Daimler-Benz Ag, 7000 Stuttgart "thermostatisch gesteuertes ventil im kuehlkreislauf von fluessigkeitsgekuehlten brennkraftmaschinen"
JPS59200011A (ja) * 1983-04-27 1984-11-13 Honda Motor Co Ltd エンジン冷却装置
JPS6095126A (ja) * 1983-10-28 1985-05-28 Mazda Motor Corp エンジンの冷却水温度制御装置
DE3510148A1 (de) * 1984-12-14 1986-06-26 Daimler-Benz Ag, 7000 Stuttgart Kuehlkreislauf einer fluessigkeitsgekuehlten brennkraftmaschine
US5419488A (en) * 1993-08-03 1995-05-30 Behr-Thomson-Dehnstoffregler Gmbh & Co. Thermostatic valve
GB2290123A (en) * 1994-06-09 1995-12-13 Rover Group A combined bypass and thermostat assembly
DE19545081A1 (de) * 1995-12-04 1997-06-05 Behr Thomson Dehnstoffregler Thermostatventil für einen Kühlkreislauf eines Verbrennungsmotors

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2758054A1 (de) * 1977-12-24 1979-07-05 Hansa Metallwerke Ag Thermostatisches dehnstoffelement
DE4233913C2 (de) * 1992-10-08 2003-04-30 Behr Thermot Tronik Gmbh Elektrisch beheizbares Thermostatventil für einen Kühlmittelkreislauf eines Verbrennungsmotors
JPH07139350A (ja) * 1993-11-12 1995-05-30 Giichi Kuze 内燃機関の冷却システム
DE29505992U1 (de) * 1995-04-06 1995-06-01 Gustav Wahler Gmbh U. Co, 73730 Esslingen Thermostatventil

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946943A (en) * 1974-10-08 1976-03-30 Toyota Jidosha Kogyo Kabushiki Kaisha Cooling system of an internal combustion engine incorporating a by-pass flow control system
JPS5620879A (en) * 1979-07-25 1981-02-26 Toyota Motor Corp Thermosensitive valve
DE3138368A1 (de) * 1981-09-26 1983-04-21 Daimler-Benz Ag, 7000 Stuttgart "thermostatisch gesteuertes ventil im kuehlkreislauf von fluessigkeitsgekuehlten brennkraftmaschinen"
JPS59200011A (ja) * 1983-04-27 1984-11-13 Honda Motor Co Ltd エンジン冷却装置
JPS6095126A (ja) * 1983-10-28 1985-05-28 Mazda Motor Corp エンジンの冷却水温度制御装置
DE3510148A1 (de) * 1984-12-14 1986-06-26 Daimler-Benz Ag, 7000 Stuttgart Kuehlkreislauf einer fluessigkeitsgekuehlten brennkraftmaschine
US5419488A (en) * 1993-08-03 1995-05-30 Behr-Thomson-Dehnstoffregler Gmbh & Co. Thermostatic valve
GB2290123A (en) * 1994-06-09 1995-12-13 Rover Group A combined bypass and thermostat assembly
DE19545081A1 (de) * 1995-12-04 1997-06-05 Behr Thomson Dehnstoffregler Thermostatventil für einen Kühlkreislauf eines Verbrennungsmotors

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 5, no. 68 (M-67), 8.Mai 1981 & JP 56 020879 A (TOYOTA MOTOR CORP), 26.Februar 1981, *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 242 (M-417), 26.September 1985 & JP 60 095126 A (MAZDA KK), 28.Mai 1985, *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 67 (M-366), 27.März 1985 & JP 59 200011 A (HONDA GIKEN KOGYO KK), 13.November 1984, *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004046516A1 (fr) * 2002-11-16 2004-06-03 Daimlerchrysler Ag Soupape thermostatique destinee a un systeme de refroidissement d'un moteur a combustion interne
US7096831B2 (en) 2002-11-16 2006-08-29 Daimlerchrysler Ag Thermostatic valve for a cooling system of an internal combustion engine
EP2090763A1 (fr) * 2008-02-14 2009-08-19 Peugeot Citroen Automobiles SA Circuit de refroidissement moteur
FR2927660A1 (fr) * 2008-02-14 2009-08-21 Peugeot Citroen Automobiles Sa Circuit de refroidissement moteur

Also Published As

Publication number Publication date
EP0767299A3 (fr) 1998-08-19
DE19537068A1 (de) 1997-04-10
ES2203663T3 (es) 2004-04-16
DE59610625D1 (de) 2003-09-04
EP0767299B1 (fr) 2003-07-30

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