[go: up one dir, main page]

EP0180208A2 - Dispositif pour régler la pression pour un circuit de refroidissement d'un moteur à combustion interne - Google Patents

Dispositif pour régler la pression pour un circuit de refroidissement d'un moteur à combustion interne Download PDF

Info

Publication number
EP0180208A2
EP0180208A2 EP85113780A EP85113780A EP0180208A2 EP 0180208 A2 EP0180208 A2 EP 0180208A2 EP 85113780 A EP85113780 A EP 85113780A EP 85113780 A EP85113780 A EP 85113780A EP 0180208 A2 EP0180208 A2 EP 0180208A2
Authority
EP
European Patent Office
Prior art keywords
valve
pressure
valves
float
expansion volume
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
EP85113780A
Other languages
German (de)
English (en)
Other versions
EP0180208A3 (en
EP0180208B1 (fr
Inventor
Erwin Schweiger
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
Original Assignee
Bayerische Motoren Werke 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
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0180208A2 publication Critical patent/EP0180208A2/fr
Publication of EP0180208A3 publication Critical patent/EP0180208A3/de
Application granted granted Critical
Publication of EP0180208B1 publication Critical patent/EP0180208B1/fr
Expired legal-status Critical Current

Links

Images

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
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/029—Expansion reservoirs
    • 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
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/0204—Filling
    • F01P11/0209—Closure caps
    • F01P11/0247—Safety; Locking against opening
    • 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
    • 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
    • F01P11/18—Indicating devices; Other safety devices concerning coolant pressure, coolant flow, or liquid-coolant level
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/22—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point
    • F01P3/2207—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point characterised by the coolant reaching temperatures higher than the normal atmospheric boiling point

Definitions

  • the invention relates to a pressure control device according to the preamble of claim 1.
  • a pressure control device of this type is part of the prior art due to a not previously published patent application.
  • a switching valve is actuated as a function of the operation of the machine and switches on the pressure relief valve for the lower operating pressure during operation of the machine, while after the machine is switched off to avoid coolant ejection when reheating from full load only the pressure relief valve is effective for the higher operating pressure.
  • a maximum force control with corresponding construction and switching effort is required for the actuation of the switching valve.
  • this design also has functional disadvantages, because the switching valve cannot prevent ejection of coolant both when the machine is reheated during an idling operation after full load, and when the machine is restarted during reheating after it has been switched off at full load .
  • the object of the invention is to improve the pressure control device so that both the construction costs are reduced and the function is improved.
  • the series switching arrangement of the pressure relief valves according to claim 1 has the advantages over the parallel switching arrangement according to DE-A-31 43 749 that in the event of a leak in any of the valves, the cooling circuit nevertheless remains operable with the lower operating pressure and that the same for both pressure relief valves Components for the same, but additive opening pressure values can be used.
  • the arrangement of the float valve in the valve chamber between the two pressure relief valves excludes the influence of intensive flow and wobbling movements of the coolant in the expansion volume of a cooler water tank or an expansion tank on the function of the float valve.
  • the expansion tank 3 contains an air-coolant heat exchanger as a cooler 2, a secondary flow expansion tank 3, a thermostat 4 and a coolant pump 5.
  • a secondary ventilation flow leads from a high point of the cooling circuit on Radiator 2 a vent line 6 in the expansion tank 3 and from this back to the pump suction line 7 a filling line 8.
  • the expansion tank 3 has a correspondingly sized filler neck 11.
  • the expansion tank 3 contains on its upper side connected to the expansion volume 10 valves, namely two series-connected, identical pressure relief valves 12 and 13 and in each case a vacuum valve 14 and float valve 15 arranged in parallel with a pressure relief valve 12 or 13 and centrally arranged therein Pressure relief valves 12 and 13 and the vacuum valve 14 each have a closing spring 12 ', 13' and 14 'and overall a commercially available structure.
  • the float valve 15 is adapted to the structure of the vacuum valve 14 and a central bypass opening 15 'provided for it in the associated pressure relief valve 12.
  • Recesses 16 in a holding plate 17 of the float valve 15 ensure the flow of air from the expansion volume 10 and the lower pressure relief valve 13 or to the vacuum valve 14 and through the valve chamber 18, which is closed on all sides, and the overflow connection 19 to and from the atmosphere.
  • the switching level 20 of the float valve 15 is matched to the maximum filling level 9 in the expansion tank 3 in such a way that the switching level 20 is higher than the highest coolant level 21 in normal operation without vapor formation in the machine 1.
  • the coolant level increases a full load operation of the machine 1 in the subsequent idle operation or after switching off due to afterheating with steam formation, especially in the cooling jacket of the cylinder head of the engine 1 via the switching level 20 of the float valve 15, so on the one hand ejection by closing the float valve 15 prevented by coolant and, on the other hand, by connecting the two pressure relief valves 12 and 13 in series, the pressure value is doubled, thereby limiting the vapor formation.
  • the increased overpressure value remains effective even when restarting until the vapor volume condenses and the coolant level drops below the switching level 20 has dropped.
  • a loss of coolant is therefore ruled out in all normal operating conditions of an intact machine 1. Loss of coolant and excessive operating pressure are even ruled out even in the event of fuel gas leaks in the cooling circuit because the fuel gas is separated from the bypass vent in the expansion tank and can blow off via the open float valve 15 and the lower pressure valve 13 that opens at the lower operating pressure.
  • the arrangement of the float valve 15 in the narrow valve chamber 18 prevents the function of the float valve 15 from being affected by displacements and accelerated movements of the coolant level.
  • the float valve 115 is designed corresponding to the valve seat for a commercially available vacuum valve 114 and is arranged instead of one.
  • This valve insert 124 is attached to the commercially available screw cap 122 by simply plugging it on and can therefore also be retrofitted.
  • an arrangement of float valve 115 and vacuum valve 114 which is interchanged with respect to FIG. 1 is better, because this means that an exchange of the commercially available vacuum valve 114 for the float valve 115 can be omitted.
  • the bayonet cover 222 shown in FIG. 3 also corresponds to a commercially available design including pressure relief valve 212 and in some cases including vacuum valve 214. However, its valve disk is modified to a holding flange 226 for a valve housing 227 and provided with through openings 228. A float valve 215, which controls the passage opening 228, is arranged in the valve housing 227.
  • the flare The edge 227 'of the valve housing 227 serves as the sealing edge of the vacuum valve 214 and, like the valve disk of the vacuum valve in a conventional manner, interacts with the sealing disk 229 of the pressure valve 212.
  • the underside of the valve housing 227 facing the expansion volume 210 contains the second pressure relief valve 213, which, until the float valve 215 closes, determines a lower pressure in the expansion volume 210 than the first pressure relief valve 212, which is then decisive, with the closing spring 212 ′ dimensioned for the higher pressure opening value.
  • the two pressure relief valves 212 and 213 are connected in parallel, so that one each alone determines the maximum pressure to be set in the expansion volume 210 due to the function of the float valve 215.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Safety Valves (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
EP85113780A 1984-10-29 1985-10-29 Dispositif pour régler la pression pour un circuit de refroidissement d'un moteur à combustion interne Expired EP0180208B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3439554 1984-10-29
DE19843439554 DE3439554A1 (de) 1984-10-29 1984-10-29 Drucksteuervorrichtung fuer den kuehlkreis von brennkraftmaschinen

Publications (3)

Publication Number Publication Date
EP0180208A2 true EP0180208A2 (fr) 1986-05-07
EP0180208A3 EP0180208A3 (en) 1987-04-29
EP0180208B1 EP0180208B1 (fr) 1989-12-13

Family

ID=6249018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113780A Expired EP0180208B1 (fr) 1984-10-29 1985-10-29 Dispositif pour régler la pression pour un circuit de refroidissement d'un moteur à combustion interne

Country Status (2)

Country Link
EP (1) EP0180208B1 (fr)
DE (2) DE3439554A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0287450A1 (fr) * 1987-04-16 1988-10-19 Valeo Chausson Thermique Bouchon d'échangeur de chaleur pour la régulation du circuit de refroidissement d'un moteur
DE4020866C1 (fr) * 1990-06-29 1991-05-23 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE4228185A1 (de) * 1992-08-25 1994-03-03 Daimler Benz Ag Vorrichtung zur Steuerung des Druckes der Kühlflüssigkeit einer Brennkraftmaschine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4124182C1 (fr) * 1991-07-20 1992-06-04 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
CN112901331B (zh) * 2021-01-12 2022-04-22 武汉路特斯汽车有限公司 一种多回路冷却液共用的加注装置
DE102022128616B3 (de) 2022-10-28 2024-01-04 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Phasenwechselkühlkreislauf mit Drucksteuereinrichtung

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1541074A (en) * 1924-10-02 1925-06-09 Alfred L Sohm Indicator
US2195266A (en) * 1939-02-24 1940-03-26 Gen Motors Corp Pressure cap
US2535974A (en) * 1947-07-02 1950-12-26 Robertshaw Fulton Controls Co Thermostatically controlled pressure cap for radiators
US2878794A (en) * 1957-07-29 1959-03-24 Ralph O Stromberg Automobile cooling system
GB896850A (en) * 1957-06-01 1962-05-16 British Leyland Motor Corp Engine cooling systems for vehicles
GB1072159A (en) * 1963-11-13 1967-06-14 Publicite Francaise System for cooling the engine of a motor vehicle and heating the air inside the vehicle
DE2509995A1 (de) * 1974-03-14 1975-12-18 Nippon Denso Co Kuehlerverschluss
GB1488484A (en) * 1974-11-01 1977-10-12 Chrysler Uk Header tanks for coolant radiators
FR2376294A1 (fr) * 1976-12-28 1978-07-28 Ouest Cie Bouchon, notamment pour vase d'expansion
DE3045357A1 (de) * 1980-12-02 1982-06-09 Daimler-Benz Ag, 7000 Stuttgart "kuehlsystem fuer eine brennkraftmaschine"
DE3143749A1 (de) * 1981-11-04 1983-05-11 Magirus-Deutz Ag, 7900 Ulm Vorrichtung zur absicherung des wasserdruckes im kuehlwasserkreislauf einer brennkraftmaschine

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1541074A (en) * 1924-10-02 1925-06-09 Alfred L Sohm Indicator
US2195266A (en) * 1939-02-24 1940-03-26 Gen Motors Corp Pressure cap
US2535974A (en) * 1947-07-02 1950-12-26 Robertshaw Fulton Controls Co Thermostatically controlled pressure cap for radiators
GB896850A (en) * 1957-06-01 1962-05-16 British Leyland Motor Corp Engine cooling systems for vehicles
US2878794A (en) * 1957-07-29 1959-03-24 Ralph O Stromberg Automobile cooling system
GB1072159A (en) * 1963-11-13 1967-06-14 Publicite Francaise System for cooling the engine of a motor vehicle and heating the air inside the vehicle
DE2509995A1 (de) * 1974-03-14 1975-12-18 Nippon Denso Co Kuehlerverschluss
GB1488484A (en) * 1974-11-01 1977-10-12 Chrysler Uk Header tanks for coolant radiators
FR2376294A1 (fr) * 1976-12-28 1978-07-28 Ouest Cie Bouchon, notamment pour vase d'expansion
DE3045357A1 (de) * 1980-12-02 1982-06-09 Daimler-Benz Ag, 7000 Stuttgart "kuehlsystem fuer eine brennkraftmaschine"
DE3143749A1 (de) * 1981-11-04 1983-05-11 Magirus-Deutz Ag, 7900 Ulm Vorrichtung zur absicherung des wasserdruckes im kuehlwasserkreislauf einer brennkraftmaschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0287450A1 (fr) * 1987-04-16 1988-10-19 Valeo Chausson Thermique Bouchon d'échangeur de chaleur pour la régulation du circuit de refroidissement d'un moteur
FR2614071A1 (fr) * 1987-04-16 1988-10-21 Chausson Usines Sa Procede pour la regulation du circuit de refroidissement d'un moteur thermique et bouchon pour sa mise en oeuvre
DE4020866C1 (fr) * 1990-06-29 1991-05-23 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE4228185A1 (de) * 1992-08-25 1994-03-03 Daimler Benz Ag Vorrichtung zur Steuerung des Druckes der Kühlflüssigkeit einer Brennkraftmaschine

Also Published As

Publication number Publication date
DE3574753D1 (de) 1990-01-18
DE3439554A1 (de) 1986-04-30
EP0180208A3 (en) 1987-04-29
EP0180208B1 (fr) 1989-12-13

Similar Documents

Publication Publication Date Title
DE3226508C2 (de) Kühlkreis für Brennkraftmaschinen
DE3716555A1 (de) Befuell-, entlueftungs- und drucksteuer-vorrichtung fuer den fluessigkeits-kuehlkreis von kraft- und arbeitsmaschinen, insbesondere brennkraftmaschinen
EP0793006A1 (fr) Circuit de refroidissement d'un moteur à combustion interne
DE3008320A1 (de) Abgabeanlage fuer verfluechtigten kraftstoff
DE3127516C2 (fr)
WO2012019686A1 (fr) Récipient de compensation pour un circuit de liquide de refroidissement
EP0215369A2 (fr) Réservoir de compensation pour liquide de refroidissement
DE2400450A1 (de) Temperaturabhaengige, ventilgesteuerte drucksteuerungsanlage fuer erste und zweite druckbetaetigte arbeitselemente sowie temperaturempfindliches ventil hierfuer
DE3226509A1 (de) Kuehlkreis fuer brennkraftmaschinen
EP0180208B1 (fr) Dispositif pour régler la pression pour un circuit de refroidissement d'un moteur à combustion interne
DE3314194A1 (de) Anordnung zum verhindern der brennstoffperkolation in einem vergaser
EP0487846A1 (fr) Moteur à combustion interne avec un refroidissement à evaporation
DE3700494C2 (fr)
EP0888494B1 (fr) Systeme de refroidissement pour moteur a combustion interne refroidi par fluide
DE4425440A1 (de) Querstromkühler mit Entlüftung
DE2852725A1 (de) Ausgleichsbehaelter fuer kuehlfluessigkeit
DE3239609C2 (fr)
DE3045357A1 (de) "kuehlsystem fuer eine brennkraftmaschine"
DE2822374A1 (de) Vakuumgesteuerter taktgeber fuer einen elektrischen hilfskreis eines verbrennungsmotors
DE2204959A1 (de) Verbrennungsmotor mit Funkenzündung
WO2017178614A1 (fr) Système d'alimentation en huile indépendant de la position, système d'acheminement d'huile indépendant de la position et système d'huile indépendant de la position pour un moteur à combustion interne
DE1280617B (de) Vergaser fuer Brennkraftmaschinen
DE385038C (de) Spar- und Abstellvorrichtung fuer Spritzvergaser von Kraftfahrzeugen
DE815584C (de) Vergaser fuer Brennkraftmaschinen
DE4331396C1 (de) Zyklondampfabscheider für Verdampfungskühlsysteme von Brennkraftmaschinen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT SE

17P Request for examination filed

Effective date: 19870321

17Q First examination report despatched

Effective date: 19871120

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3574753

Country of ref document: DE

Date of ref document: 19900118

ET Fr: translation filed
ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19901016

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19901025

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19901030

Year of fee payment: 6

ITTA It: last paid annual fee
26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19911029

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19911030

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19920630

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 85113780.2

Effective date: 19920510

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19961119

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980701