EP0501018B1 - Circuit d'huile d'une machine ou d'un véhicule - Google Patents

Circuit d'huile d'une machine ou d'un véhicule Download PDF

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Publication number
EP0501018B1
EP0501018B1 EP91119829A EP91119829A EP0501018B1 EP 0501018 B1 EP0501018 B1 EP 0501018B1 EP 91119829 A EP91119829 A EP 91119829A EP 91119829 A EP91119829 A EP 91119829A EP 0501018 B1 EP0501018 B1 EP 0501018B1
Authority
EP
European Patent Office
Prior art keywords
oil
line
bypass line
oil cooler
cooler
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
Application number
EP91119829A
Other languages
German (de)
English (en)
Other versions
EP0501018A1 (fr
Inventor
Axel Temmesfeld
Karl Tauber
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
Priority claimed from DE19914105774 external-priority patent/DE4105774A1/de
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0501018A1 publication Critical patent/EP0501018A1/fr
Application granted granted Critical
Publication of EP0501018B1 publication Critical patent/EP0501018B1/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
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/005—Controlling temperature of lubricant

Definitions

  • the invention relates to an oil cooler arrangement of a machine or a vehicle with a thermostatically controlled short-circuit bridging line bridging the oil cooler and having a heat-transmitting connection therewith.
  • Such an oil cooler arrangement is known, for example, from DE-A-38 06 888 or US-A-2 394 672.
  • the bypass line which primarily forms a bypass to the oil cooler pipes, also serves to ensure the oil circuit after the oil cooler has been switched on by a thermostat.
  • a cold oil cooler because of the then extremely high oil viscosity, plug formation can occur in the oil cooler pipes, which would hinder free flow. Since the bypass line is now in heat-transferring connection with the oil cooler tubes, the plugs in the oil cooler tubes are dissolved under the influence of the warm oil flowing in the bypass line.
  • a simpler oil cooler arrangement according to the preamble of claim 1 is the object of the present invention.
  • a throttle is provided which is matched to the flow cross section of the oil cooler pipes, the bypass line branching off from a flow header box for the oil cooler pipes and the latter thus essentially completely traverses, and wherein the bypass line touches a return collecting box essentially over its entire length and runs between the two collecting boxes laterally at a distance from the oil cooler.
  • the heat-transferring connection between the bypass line and the oil cooler pipes only takes place via the header boxes for the oil cooler pipes.
  • the bridging line can be flanged directly to the wall of a collecting tank or be integrated in this, but it is also possible for the bridging line to completely flow through a collecting tank. This traversing can take place in a separately inserted pipe, but it is also possible that the collecting box itself forms part of the bridging line.
  • bypass line opens into the side area of a collecting tank, which lies opposite the outlet points of the oil cooler supply line or return line, it is ensured that the fluid flowing through the bypass line completely flows through this collecting tank.
  • the heat transfer to the heat exchanger and thus the tendency to dissolve plugs is significantly increased.
  • the bridging line to the oil cooler that a plug dissolution is possible.
  • An undesirably high heat output from the oil circuit to the oil cooler which would have the consequence that the oil circuit only reaches its operating temperature after a considerable delay, is avoided by the bridging line between the two header boxes running to the side of the oil cooler and at a distance from it.
  • a flow determining element provided in the bypass line is a simple throttle, the flow cross section of which is matched to that of the oil cooler pipes.
  • the respective flow cross-sections are matched to one another, taking into account the respective temperature-dependent oil viscosity, so that only the bypass line is acted upon in the case of cold oil and the oil cooler pipes are primarily acted on in the case of hot oil.
  • Such an oil circuit uses the known advantages of the bypass line and at the same time offers high security in the event of a failure of the thermostatic element controlling the short-circuit bypass line. Should this thermostatic element always remain in its position blocking the oil cooler pipes, then at least a slight oil cooling occurs due to the bypass line, which risks overheating the Oil and thus significantly reduces the risk of damage to the machine or vehicle.
  • a thermostat element merely controls the flow cross-section of a supply line or return line leading to the oil cooler pipes. If the throttle cross-section is adjusted differently, however, it is also possible to influence the flow cross-section of the bypass line by the thermostat element alone.
  • the actuator of the thermostat element can also take over the function of the throttle with a suitable geometric design. Also with the help of a single thermostatic valve, a particularly fine tuning is possible if this thermostatic element has an actuator which controls the flow cross-section of the bypass line simultaneously with and in the opposite direction to the flow cross-section of the supply line or return line to or from the oil cooler pipes. With a suitable design, the actuator can of course also take over the function of the bypass line throttle.
  • an oil cooler 4 is also switched on in an oil circuit 1 running in the direction of the arrow.
  • This consists of a flow header 5a and a return header 5b, which are connected to each other by a plurality of ribbed oil cooler tubes 6.
  • the collecting box 5a is supplied by a flow line 7a, while a return line 7b leads away from the collecting box 5b.
  • a bridging line 8 branches off from the collecting container 5a, which additionally connects to the collecting container 5b is in heat-transferring connection and in which a throttle 9 is arranged.
  • Both the bypass line 8 and the return line 7b open into the housing of a thermostat element 10, which has a thermostatically controlled actuator 11.
  • the actuator 11 assumes different positions. In the position shown, the actuator lies against its left stop under the influence of a compression spring 12 and thus releases an outlet opening 13 of the return line 7b. Under the influence of a wax element, not shown, the actuator 11 can also be moved to the right against the force of the compression spring 12, so that the outlet opening 13 is closed.
  • the oil heating in the machine or in the consumer 3 is at most slightly cooled, which is advantageous is used to heat the two header boxes 5a, 5b, since the oil flow completely burns through the bottom header box 5a and is at least in heat-transferring connection with the top header box 5b.
  • This heat transfer which ultimately also acts on the oil cooler pipes, loosens any plugs that have formed in the oil cooler pipes. If the oil cooler pipes 6 are subsequently switched on by the thermostat element 10, there is no interruption in the oil circuit.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Details Of Gearings (AREA)
  • Fluid-Pressure Circuits (AREA)

Claims (2)

  1. Dispositif de refroidissement de l'huile d'une machine ou d'un véhicule automobile, au moyen d'une conduite de pontage (8) (court-circuit) à commande thermostatique constituant un by-pass par rapport au radiateur (4) d'huile avec lequel elle est en liaison de transfert thermique, caractérisé en ce que le conduit de pontage (8) ayant essentiellement la forme d'un anneau ouvert entourant le radiateur d'huile (4) contient un diaphragme (9) de dimension adaptée à la section de passage des tubes de radiateur (6), tandis que la conduite de pontage (8) part en déviation sur le caisson collecteur d'alimentation (5a) pour les tubes de radiateur (6) qu'elle traverse quasi totalement pour rejoindre un caisson collecteur de retour (5b) qu'elle longe avec contact sur toute la longueur de celui-ci, sa partie entre les deux collecteurs (5a, 5b) présentant un certain espacement sur le côté du radiateur d'huile (4).
  2. Dispositif de refroidissement selon la revendication 1, caractérisé en ce qu'un élément thermostatique (10) commandant la section de passage d'une conduite d'alimentation (7a) ou de retour (7b), par rapport aux tubes du radiateur (6), est équipé d'un organe de réglage (11) qui commande à la fois la section de passage de la conduite de pontage (8) et, en sens inverse, la section de passage de la conduite d'alimentation (7a) ou de retour (7b).
EP91119829A 1991-02-23 1991-11-21 Circuit d'huile d'une machine ou d'un véhicule Expired - Lifetime EP0501018B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4105774 1991-02-23
DE19914105774 DE4105774A1 (de) 1991-02-23 1991-02-23 Oelkreislauf einer maschine oder eines fahrzeuges
DE4105773 1991-02-23
DE4105773 1991-02-23

Publications (2)

Publication Number Publication Date
EP0501018A1 EP0501018A1 (fr) 1992-09-02
EP0501018B1 true EP0501018B1 (fr) 1995-01-11

Family

ID=25901304

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91119829A Expired - Lifetime EP0501018B1 (fr) 1991-02-23 1991-11-21 Circuit d'huile d'une machine ou d'un véhicule

Country Status (3)

Country Link
EP (1) EP0501018B1 (fr)
DE (1) DE59104256D1 (fr)
ES (1) ES2067125T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2896531B1 (fr) * 2006-01-26 2008-04-18 Peugeot Citroen Automobiles Sa Dispositif permettant d'accelerer la montee en temperature d'huile de lubrification d'un moteur a combustion interne a turbocompresseur a gaz d'echappement
EP2305974B1 (fr) * 2009-09-24 2013-05-15 Eaton Truck Components Sp. z.o.o. Système de refroidissement de lubrification et procédé

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0317364A1 (fr) * 1987-11-19 1989-05-24 Honda Giken Kogyo Kabushiki Kaisha Dispositif de commande de soupape pour moteur à combustion interne

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2394672A (en) * 1943-01-25 1946-02-12 United Aircraft Prod Valve mechanism
DE3806888A1 (de) * 1987-04-29 1989-09-14 Kloeckner Humboldt Deutz Ag Oelwaermetauscher, insbesondere als oelkuehler fuer eine brennkraftmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0317364A1 (fr) * 1987-11-19 1989-05-24 Honda Giken Kogyo Kabushiki Kaisha Dispositif de commande de soupape pour moteur à combustion interne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Mechanics of Fluids, 3rd Edition 1975, B.S.Massey *

Also Published As

Publication number Publication date
EP0501018A1 (fr) 1992-09-02
DE59104256D1 (de) 1995-02-23
ES2067125T3 (es) 1995-03-16

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