EP0767299B1 - Thermostatventil für den Kühlkreislauf einer Brennkraftmaschine - Google Patents
Thermostatventil für den Kühlkreislauf einer Brennkraftmaschine Download PDFInfo
- Publication number
- EP0767299B1 EP0767299B1 EP96115636A EP96115636A EP0767299B1 EP 0767299 B1 EP0767299 B1 EP 0767299B1 EP 96115636 A EP96115636 A EP 96115636A EP 96115636 A EP96115636 A EP 96115636A EP 0767299 B1 EP0767299 B1 EP 0767299B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- short
- circuit
- throttle
- expansion element
- 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.)
- Expired - Lifetime
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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 according to the preamble of claim 1 to a Thermostat valve for the cooling circuit of an internal combustion engine, in which a Expansion element regulates a main valve of an external coolant circulation, and via the opening stroke of the main valve, a short-circuit valve controls one Mouth-side flow cross section of a feed channel of a Short circuit line of the inner coolant circulation passed elastically yielding closes, with a valve, an additional device for steering a effective coolant flow is assigned to the expansion element.
- thermostatic valves are common and are known to be used in series engines the control / regulation of the respective liquid cooling circuit.
- the expansion element At due from relatively cold coolant closed main valve to the flow of a radiator in the outer coolant circulation, the expansion element is substantially at least heated to the opening of the main valve via the inner coolant circulation. That the thermostat from a short-circuited valve open Inflow channel of the short-circuit line of the inner coolant circulation inflowing, heated coolant is arranged in the short-circuit valve according to DE 31 38 368 A1 Openings directed to the expansion element to promote the control quality; further measures to promote the control quality are not provided.
- an improvement in the control quality is according to DE 35 10 148 A1 by a coolant flow device arranged downstream of the valve in the course of the flow reached; the valve itself has no special features to improve the Control quality on.
- the invention has for its object to provide a thermostat of the type described above To improve type such that at substantially inner coolant circulation (Short circuit operation) whose effect on the expansion element of the Thermostatic valve is increased in direct inflow or flow.
- the additional device a an inlet channel of the short-circuit line pressurized elastically yielding guided releasing throttle valve with throttle openings, wherein the short-circuit valve arranged on the expansion element Druchbrechungen arranged such has, that the short-circuit valve from a predetermined opening stroke of the main valve closes the throttle openings of the throttle valve (FIGS. 3, 4, 5).
- the known throttle valve causes by means of the reduction of the internal Coolant circulation a faster coolant recovery, the invention for Improvement of the control quality is used.
- Preferred embodiments of the third embodiment according to the invention are in further claims. Their advantage is the possibility of a relative low construction combined with low installation space.
- thermostatic valve 1 for the cooling circuit a not shown in detail, liquid-cooled internal combustion engine comprises an expansion element 2, which serves as a servomotor of a main valve 3 in a outer coolant circulation of the temperature control of the coolant is used.
- the at 4 machine side in a cover 5 supported arranged expansion element. 2 has at the opposite end to a control pin 6, which has a U-shaped Bracket 7 is in drive connection with the main valve 3.
- the guided in a beam or star-shaped Traverse 8 drive handle 7 has a control pin 6 receiving extension 9, which on the outer circumference a to the drive bracket 7 towards elastically yielding short-circuit valve 10 carries.
- This arrangement serves to ensure that the short-circuit valve 10 in a predetermined Way over the caused by the expansion element 2 opening stroke controlled the main valve 3, a flow cross-section of a feed channel eleventh a short-circuit line 11 'of the inner coolant circulation closes.
- Each thermostatic valve 1 according to the figures 1 to 4 is in each case an additional device for directing an increased efficiency of the coolant flow the inner coolant circulation downstream of the located in an open position Short-circuit valve 10 is provided on the expansion element 2.
- the flow cross-section controlling, plate-like short-circuit valve 10 is the mouth 12 of the inlet channel 11 a the short-circuit valve 10 enclosing nozzle 13 as an additional device with a directed to the expansion element 2 outflow 14 as Associated with flow steering device.
- thermostatic valve 1 shown in Figure 2 as an additional device an the inlet channel 11 of the short-circuit line 11 'pressurized elastically yielding guided releasing throttle valve 16 with throttle openings 15 provided, wherein the slidably guided on the extension 9 throttle valve 16 expansion element side, a nozzle 17 enclosing the short-circuit valve 10 as another part of the additional device with a on the expansion element. 2 directed outlet opening 18 is assigned.
- the throttle openings 15 in the known to serve as a warm-up valve throttle valve 16 are from a predetermined opening stroke of the main valve 3 by the plate-like design Short-circuit valve 10 closable.
- thermostatic valves 1 of Figures 3 and 4 each form throttle openings 19 pressurized in a supply channel 11 of the short-circuit line 11 ' releasing throttle valve 20 as respective additional device the respective Flow cross section, wherein the respective short-circuit valve 10 each Thermostatic valve 1 directed to the expansion element 2 Druchbrechungen 21st arranged such that each short-circuit valve from a predetermined Opening stroke of the main valve 3, the throttle openings 19 in addition to each Warm-up valve acting throttle valve 20 closes.
- each thermostatic valve 1 according to the invention with a cup-shaped throttle valve 20 is equipped as an additional device, wherein each throttle valve 20 in one of the pot wall 22 adjacent bottom region 23 angeomdete throttle openings 19 has.
- the invention as a poppet valve designed, with a relatively small circumferential play led to the pot wall 22 arranged Short-circuit valve 10, the intended openings 21 closely adjacent a concentrically arranged guide bush 24.
- thermostatic valve 1 of Figure 4 Compared with the thermostatic valve 1 of Figure 3 comprises the thermostatic valve 1 of Figure 4, the short-circuit valve 10 with a relatively small circumferential clearance to Topfwandung 22 guided sealing ring 25, which with a centrally arranged guide bushing 26 is connected via a cone portion 27 in connection, in an advantageous Add the effective flow to the transition area of the cone section 27 and guide bushing 26 arranged openings 21 directs.
- the present invention improved direct arrival or flow around the expansion element 2 in short-circuit operation or with internal coolant circulation with over a throttled flow of increased coolant temperature is advantageously applicable in a thermostat 1 for map-controlled cooling, what the Expansion element 2 additionally equipped with an electric heater 31 is. This may be due to the increased in effectiveness according to the invention or rinsing of the expansion element operated advantageous energy saving become.
- a preferred simple embodiment of an inventive from a Throttling valve 28 and a short-circuit valve 10 formed additional device shows Figure 5, wherein both valves 10, 28 are each dish-shaped.
- the example on a housing extension 29 in a known manner via the control pin arranged on the machine-side Dehnstoffiatas arranged slidingly movable Valves 10, 28 are arranged movable relative to each other so that the Throttle valve 28 facing away from the expansion element on a short-circuit valve 10 on angeorndeten guide bushing 30 slides.
- That associated with the inlet channel 11 Throttle valve 28 has arranged on a channel wall near subcircuit Throttle openings 19, whereas the short-circuit valve 10, in contrast, radially Inwardly near the guide bush 30 has arranged openings 21. This is for free flow around the peripheral edge of the short-circuit valve 10th via the openings 21 in addition a targeted flow of the expansion element along its housing extension 29 achieved with the advantage of rapid heating of the wax element-containing expansion element (Not shown).
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Temperature-Responsive Valves (AREA)
Description
Claims (6)
- Thermostatventil für den Kühlkreislauf einer Brennkraftmaschine,bei dem ein Dehnstoffelement (2) ein Hauptventil (3) eines äußeren Kühlmittelumlaufes regelt, undüber den Öffnungshub des Hauptventiles (3) gesteuert ein Kurzschlussventil (10) einen mündungsseitigen Strömungsquerschnitt eines Zulaufkanals (11) einer Kurzschlußleitung (11') des inneren Kühlmittelumlaufes elastisch nachgiebig geführt verschließt, wobeieinem Ventil (3, 10) eine Zusatzvorrichtung zur Lenkung einer wirksamen Kühlmittelströmung auf das Dehnstoffelement (2) zugeordnet ist,dass dem Kurzschlussventil (10) stromauf als Teil der Zusatzvorrichtung ein die Mündung (12) des Zulaufkanals (11) der Kurzschlussleitung (11') druckbeaufschlagt elastisch nachgiebig geführt freigebendes Drosselventil (16, 20, 28) mit Drosselöffnungen (15, 19) zugeordnet ist, wobeidurch die mittels des Kurzschlussventils (10) verschließbaren Drosselöffnungen (15, 19) strömendes Kühlmittel über mindestens eine Öffnung (18, 21) in einem weiteren Teil (17, 10) der Zusatzvorrichtung stromab des Drosselventils (16, 20, 28) auf das Dehnstoffelement (2) gelenkt ist.
- Thermostatventil nach Anspruch 1,
dadurch gekennzeichnet,daß die Zusatzvorrichtung ein einen Zulaufkanal (11) der Kurzschlußleitung (11') druckbeaufschlagt elastisch nachgiebig geführt freigebenes Drosselventil (16) mit Drosselöffnungen (15) umfaßt, sowieeine dem Drosselventil (16) dehnstoffelementseitig zugeordnete, das Kurzschlußventil (10) umschließende Düse (17) mit einer auf das Dehnstoffelement (2) gerichteten Austrittsöffnung (18) (Figur 2). - Thermostatventil nach Anspruch 1,
dadurch gekennzeichnet,daß die Zusatzvorrichtung ein einen Zulaufkanal (11) der Kurzschlußleitung (11') druckbeaufschlagt elastisch nachgiebig geführt freigebendes Drosselventil (20, 28) mit Drosselöffnungen (19) sowieim Kurzschlußventil (10) auf das Dehnstoffelement (2) gerichtete Druchbrechungen (21) derart angeordnet umfaßt, daßdas Kurzschlußventil (10) ab einem vorbestimmten Öffnungshub des Hauptventils (3) die Drosselöffnungen (19) des jeweiligen Drosselventils (20, 28) verschließt (Figuren 3, 4, 5). - Thermostatventil nach Anspruch 4,
dadurch gekennzeichnet,daß ein topfartig gestaltetes Drosselventil (20) der Zusatzvorrichtung in einem der Topfwandung (22) benachbarten Bodenbereich (23) angeorndete Drosselöffnungen (19) aufweist, unddaß das als Tellerventil gestaltete, mit relativ kleinem Umfangsspiel zur Topfwandung (21) geführt angeordnete Kurzschlußventil (10) benachbart einer konzentrisch angeordneten Führungsbuchse (24) vorgesehene Durchbrechungen (21) aufweist (Figur 3). - Thermostatventil nach Anspruch 4,
dadurch gekennzeichnet, daßein topfartig gestaltetes Drosselventil (20) der Zusatzvorrichtung in einem der Topfwandung (22) benachbarten Bodenbereich (23) angeordnete Drosselöffnungen (19) aufweist, unddas Kurzschlußventil (10) einen mit relativ kleinem Umfangsspiel zur Topfwandung (22) geführten Dichtring (25) umfaßt, dermit einer zentrisch angeordneten Führungsbuchse (26) über einen Kegelabschnitt (27) in Verbindung steht, derdie wirksame Strömung zu im Übergangsbereich von Kegelabschnitt (27) und Führungsbuchse (26) angeordneten Durchbrechungen (21) lenkt. - Thermostatventil nach einem oder mehreren der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daßdas Dehnstoffelement (2) mit einer zusätzlichen Heizeinrichtung (31) ausgerüstet ist.
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 EP0767299A2 (de) | 1997-04-09 |
EP0767299A3 EP0767299A3 (de) | 1998-08-19 |
EP0767299B1 true EP0767299B1 (de) | 2003-07-30 |
Family
ID=7774070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96115636A Expired - Lifetime EP0767299B1 (de) | 1995-10-05 | 1996-09-30 | Thermostatventil für den Kühlkreislauf einer Brennkraftmaschine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0767299B1 (de) |
DE (2) | DE19537068A1 (de) |
ES (1) | ES2203663T3 (de) |
Families Citing this family (3)
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 |
DE10253469A1 (de) * | 2002-11-16 | 2004-05-27 | Daimlerchrysler Ag | Thermostatventil für ein Kühlsystem einer Brennkraftmaschine |
FR2927660B1 (fr) * | 2008-02-14 | 2010-02-12 | Peugeot Citroen Automobiles Sa | Circuit de refroidissement moteur |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5148529U (de) * | 1974-10-08 | 1976-04-12 | ||
DE2758054A1 (de) * | 1977-12-24 | 1979-07-05 | Hansa Metallwerke Ag | Thermostatisches dehnstoffelement |
JPS5620879A (en) * | 1979-07-25 | 1981-02-26 | Toyota Motor Corp | Thermosensitive valve |
DE3138368C2 (de) * | 1981-09-26 | 1983-07-28 | Daimler-Benz Ag, 7000 Stuttgart | "Thermostatisch gesteuertes Ventil im Kühlkreislauf von flüssigkeitsgekühlten 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 |
DE4233913C2 (de) * | 1992-10-08 | 2003-04-30 | Behr Thermot Tronik Gmbh | Elektrisch beheizbares Thermostatventil für einen Kühlmittelkreislauf eines Verbrennungsmotors |
DE4325975C9 (de) * | 1993-08-03 | 2010-01-07 | Behr Thermot-Tronik Gmbh | Thermostatventil |
JPH07139350A (ja) * | 1993-11-12 | 1995-05-30 | Giichi Kuze | 内燃機関の冷却システム |
GB2290123B (en) * | 1994-06-09 | 1997-10-29 | Rover Group | A combined bypass and thermostat assembly |
DE29505992U1 (de) * | 1995-04-06 | 1995-06-01 | Gustav Wahler Gmbh U. Co, 73730 Esslingen | Thermostatventil |
DE19545081A1 (de) * | 1995-12-04 | 1997-06-05 | Behr Thomson Dehnstoffregler | Thermostatventil für einen Kühlkreislauf eines Verbrennungsmotors |
-
1995
- 1995-10-05 DE DE19537068A patent/DE19537068A1/de not_active Ceased
-
1996
- 1996-09-30 ES ES96115636T patent/ES2203663T3/es not_active Expired - Lifetime
- 1996-09-30 EP EP96115636A patent/EP0767299B1/de not_active Expired - Lifetime
- 1996-09-30 DE DE59610625T patent/DE59610625D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0767299A3 (de) | 1998-08-19 |
DE19537068A1 (de) | 1997-04-10 |
ES2203663T3 (es) | 2004-04-16 |
DE59610625D1 (de) | 2003-09-04 |
EP0767299A2 (de) | 1997-04-09 |
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