EP3008306A1 - Zylinderblock mit erweitertem kühlmitteleinlass - Google Patents

Zylinderblock mit erweitertem kühlmitteleinlass

Info

Publication number
EP3008306A1
EP3008306A1 EP14731756.4A EP14731756A EP3008306A1 EP 3008306 A1 EP3008306 A1 EP 3008306A1 EP 14731756 A EP14731756 A EP 14731756A EP 3008306 A1 EP3008306 A1 EP 3008306A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
circuit
coolant
housing
cylinder block
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
EP14731756.4A
Other languages
English (en)
French (fr)
Other versions
EP3008306B1 (de
Inventor
Herve OSMONT
Christophe CLASADONTE
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP3008306A1 publication Critical patent/EP3008306A1/de
Application granted granted Critical
Publication of EP3008306B1 publication Critical patent/EP3008306B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • 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
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • F01P2003/021—Cooling cylinders

Definitions

  • the present invention relates to a cylinder block having an enlarged inlet for its internal coolant circuit, the cylinder housing being intended to equip the internal combustion engines including those of a motor vehicle.
  • a cylinder block comprises cylinders which serve as combustion chambers of the engine which become heated during operation.
  • the internal coolant circuit has at least one coolant chamber, preferably one liquid chamber per cylinder. The liquid flows through this or these chambers by performing a heat exchange with heat removal out of the cylinder block but also a standardization of temperatures inside the cylinder block.
  • the coolant chamber or chambers are thus disposed near a cylinder so as to circulate the coolant near it.
  • the internal coolant circuit also has an inlet and a coolant outlet, the inlet introducing into the cylinder block a coolant at a lower temperature than that of the coolant discharged through the outlet.
  • the flow of the coolant by the internal circuit in the cylinder block is important to ensure sufficient cooling of the combustion chamber or chambers in the cylinder block.
  • a large flow is favored by a wide inlet of the cooling circuit.
  • the inlet of the internal coolant circuit in the cylinder block is housed in a receiving element forming part of the cylinder block and intended to receive inside an external coolant supply, for example by the insertion in this element receiving an output of an external coolant circuit which comprises a pump.
  • the internal configuration that must take the receiving element of the external circuit can reduce the size of the input of the internal circuit and thus the flow of coolant in the internal circuit.
  • the section of the input may not be sufficient to ensure the passage of the flow created by the pump of the external circuit.
  • the coolant inlet should have a sufficient section in the crankcase to supply liquid to the engine with a variable-flow coolant pump, even for the highest flow rate of the pump.
  • One possibility would be to shift the receiving element in a place where it could offer more surface to the input of the internal circuit or to increase the dimensions of the receiving element.
  • a cylinder block has manufacturing constraints that must be respected and that do not allow to make such changes on the cylinder block.
  • EP-B-0 851 109 discloses a cooling fluid-cooled type internal combustion engine comprising a cylinder located in the cylinder block of the engine and an internal circuit of coolant integrated in the cylinder block. This internal circuit includes a portion surrounding the cylinder and thus forming a coolant chamber.
  • the input of this circuit is a through hole provided at the outer wall of the motor facing the internal circuit.
  • This document does not deal with the problem of the flow of coolant in the internal cooling circuit of the cylinder block but the absorption of vibrations. It therefore gives no solution as to the increase of the flow of coolant through the inlet of the internal cooling circuit. Therefore, the object of the present invention is, firstly, to design a cylinder housing having an inlet for its coolant circuit section sufficiently large to allow the passage of the entire fluid of cooling that sends the pump of the external circuit and, secondly, that this adaptation is compatible with the manufacturing process of the cylinder block and constraints that the outer shape of the cylinder block must comply.
  • a combustion engine cylinder casing having at least one cylinder and incorporating an internal coolant circuit, the internal circuit having an inlet, an outlet and at least one coolant chamber disposed adjacent to said at least one cylinder for circulating the coolant in proximity to said at least one cylinder, the inlet of said circuit being formed through an inner housing defined by a receiving member being a part of the cylinder block and intended to receive an external supply of cooling liquid, characterized in that the inner housing is provided with a protuberance or local modification for increasing the passage area of the inlet of the internal cooling circuit.
  • protuberance and local modification are to be understood in the broad sense as any modification in the housing wall which increases the passage section of the cooling circuit inlet opening into said housing.
  • the technical effect obtained is the increase of the passage section of the inlet of the internal coolant circuit, this in a simple manner and without the need to completely change the manufacturing process of the cylinder block nor the configuration of the cylinder block, its outer shape and the positioning of the various parts of the cylinder block remaining unchanged.
  • the inner housing of the receiving element is cylindrical and the protuberance or local modification is a flat in the cylindrical wall of said element at the input of the circuit.
  • the wall of the housing is modified to locally not be cylindrical but have a right side that will expand the inlet section of the cooling fluid.
  • the housing is preferably the housing of a pump for the recirculation of coolant. It can therefore be closed at one of its ends.
  • the inner housing of the receiving element is cylindrical being closed at one of its ends, the inlet of the internal circuit having a passage portion formed on the edge of the cylinder, the protuberance being at this passage portion and having an opening extending said passage portion.
  • the protuberance is substantially in the form of a hollow rectangular parallelepiped resting on the closed end of the inner housing by one of its faces while its opposite face has the opening extending said passage portion.
  • the protuberance and the closed end are of the same holding.
  • the present invention also relates to a set of an external coolant circuit and a cylinder block, the external cooling circuit being connected to the internal circuit of the coolant of the cylinder block and comprising a pump for the circulation. coolant in its interior and in the internal circuit of the cylinder block, characterized in that the cylinder block is as previously mentioned.
  • the present invention relates to a motor vehicle, characterized in that it comprises such a set of a coolant circuit and a cylinder block.
  • the present invention relates to a method of manufacturing such a cylinder block being produced by molding in a mold, characterized in that the portion of the mold corresponding to the inner housing of the receiving element of the cylinder block comprises a re-entrant form corresponding to the protuberance for increasing the surface of the inlet passage of the internal circuit of coolant.
  • the re-entrant form is a flat part.
  • the flat is disposed on two complementary parts of the mold.
  • the method is a method of molding under pressure or by gravity.
  • FIG. 1 is a diagrammatic representation in perspective of an external cooling liquid circuit output receiving element forming part of a cylinder block according to the state of the art, the receiving element carrying in its interior the inlet of the inner circuit of coolant of the cylinder block,
  • FIG. 2 is a diagrammatic perspective representation of an external cooling liquid circuit output receiving element forming part of a cylinder block according to the present invention, the receiving element carrying an enlarged inlet for its interior. inner circuit of coolant of the cylinder block,
  • FIG. 3 is a schematic representation of a cylinder block according to the present invention with a receiving member carrying an enlarged inlet for the internal coolant circuit.
  • FIG. 1 shows for a combustion engine cylinder block 1 the receiving element. 2 of the output of an external coolant circuit excluding the rest of the cylinder block 1, this receiving element being in accordance with the state of the art.
  • the external coolant circuit serves as external coolant supply of the cylinder block 1, the cooling liquid being advantageously water-based with or without additive.
  • the cylinder housing 1 incorporates an internal coolant circuit, this internal circuit having an inlet 3a and a liquid passage outlet and at least one coolant chamber disposed near said at least one cylinder. This makes it possible to circulate the coolant in the vicinity of the at least one cylinder for cooling it.
  • the receiving element 2 has a receiving housing 2a in its interior.
  • This receiving housing 2a may advantageously be of substantially cylindrical shape being closed at one of its ends 5.
  • the housing 2a receives the output of the external cooling liquid circuit and communicates it with the internal circuit of the internal cooling liquid to the housing cylinder via its entry 3a passage.
  • the inlet passage 3a through the housing 2a to open inside the cylinder block 1 and communicate with the rest of the internal circuit of coolant cylinder 1 to the cylinder.
  • the edge of the cylinder forming the receiving housing 2a and its curvature limit the dimensions of the inlet 3a passage, which is very disadvantageous, the flow created by a pump disposed in the external cooling fluid circuit being decreased during the passage of the fluid through this inlet 3a.
  • Figure 2 which illustrates a cylinder block 1 according to the present invention
  • the outer dimensions of the receiving member 2 and the cylinder block 1 are retained.
  • the inner receiving housing 2a which generally retains its shape, advantageously cylindrical, with the difference that the receiving housing 2a has a protuberance 4 to increase the surface of the inlet 3 passage of the circuit internal cooling in the cylinder block 1.
  • the protuberance 4 is advantageously at this passage portion and has a passage opening 6 extending said passage portion.
  • the protuberance 4 is substantially in the form of a hollow rectangular parallelepiped resting on the closed end 5 of the inner receiving housing 2a by one of its faces while its opposite face has the opening 6 extending the passage portion through the edge of the cylinder formed by the receiving housing 2a.
  • the protuberance 4 and the closed end 5 of the receiving housing 2a inside the receiving element 2 are of the same holding.
  • Such a protuberance 4 may make it possible to increase the passage section of the inlet 3 by 10 to 50%, for example by making it, for example, pass from a surface area of 500 mm 2 obtained according to the state of the art. at an area of 687 mm 2 according to the present invention.
  • Figure 3 shows the positioning of the receiving element 2 on the cylinder block 1, the receiving housing 2a inside this receiving element 2 being provided with an enlarged inlet formed in the protuberance 4 at the passage portion shown in Figure 1 and having an opening 6 extending said passage portion.
  • the invention also relates to a method of manufacturing a cylinder block 1 made by molding in a mold.
  • the part of the mold corresponding to the inner housing 2a of the receiving element 2 forming part of the cylinder block 1 comprises a re-entrant shape corresponding to the protuberance 4 making it possible to increase the surface area of the passage entrance of the internal coolant circuit. .
  • This re-entrant shape makes it possible to obtain the creation of the protuberance 4 during molding.
  • the reentrant form is in the form of a flat.
  • the mold is in several parts and the flat is disposed on two complementary parts of the mold.
  • the molding process of a cylinder block is usually an underpressure molding process.
  • the presence of a protuberance 4 in the receiving housing 2a inside the receiving part 2 of the cylinder block 1 keeps this type of manufacturing process.
  • the molding process can also be performed by gravity.
  • the invention also relates to a set of an external coolant circuit and a cylinder block 1, the external cooling circuit being connected to the internal coolant circuit of the cylinder block 1 and comprising a pump for the circulation of the coolant in its interior and in the internal circuit of the cylinder block 1, the cylinder block being as previously mentioned.
  • the invention finally relates to a motor vehicle comprising such a set of a coolant circuit and a cylinder block 1.
  • the present invention allows an optimization of the passage section of the inlet of the internal circuit of coolant in the cylinder block, the element added to increase the passage section, that is to say the protuberance , having good thermomechanical behavior and therefore good durability in operation. While obtaining in a simple manner an increase in the passage section of the inlet of the internal coolant circuit, according to the invention it is thus possible to maintain the usual manufacturing process of the cylinder block which is the molding under pressure by making only slight changes in the design of the mold.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP14731756.4A 2013-06-14 2014-05-28 Zylinderblock mit erweitertem kühlmitteleinlass Active EP3008306B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1355564A FR3007076B1 (fr) 2013-06-14 2013-06-14 Carter cylindre avec entree elargie pour liquide de refroidissement
PCT/FR2014/051272 WO2014199043A1 (fr) 2013-06-14 2014-05-28 Carter cylindre avec entree elargie pour liquide de refroidissement

Publications (2)

Publication Number Publication Date
EP3008306A1 true EP3008306A1 (de) 2016-04-20
EP3008306B1 EP3008306B1 (de) 2018-12-19

Family

ID=49003902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14731756.4A Active EP3008306B1 (de) 2013-06-14 2014-05-28 Zylinderblock mit erweitertem kühlmitteleinlass

Country Status (3)

Country Link
EP (1) EP3008306B1 (de)
FR (1) FR3007076B1 (de)
WO (1) WO2014199043A1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19642693B4 (de) * 1996-10-16 2005-05-25 Daimlerchrysler Ag Brennkraftmaschine mit Flanschflächen für Anschlußflansche einer mit einem kühlwasserdurchströmten Wärmetauscher verbundenen Vorlauf- und Rücklaufleitung
JP2900248B2 (ja) 1996-12-27 1999-06-02 本田技研工業株式会社 水冷式内燃機関
US6408803B1 (en) * 2000-10-19 2002-06-25 Robert M. Atkins Liquid cooling system and retrofit for horizontally opposed air cooled piston aircraft engines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014199043A1 *

Also Published As

Publication number Publication date
WO2014199043A1 (fr) 2014-12-18
FR3007076A1 (fr) 2014-12-19
EP3008306B1 (de) 2018-12-19
FR3007076B1 (fr) 2015-06-26

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