EP2929170B1 - Moteur à combustion interne - Google Patents

Moteur à combustion interne Download PDF

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Publication number
EP2929170B1
EP2929170B1 EP13821061.2A EP13821061A EP2929170B1 EP 2929170 B1 EP2929170 B1 EP 2929170B1 EP 13821061 A EP13821061 A EP 13821061A EP 2929170 B1 EP2929170 B1 EP 2929170B1
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EP
European Patent Office
Prior art keywords
coolant
internal combustion
combustion engine
valves
cylinder
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.)
Active
Application number
EP13821061.2A
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German (de)
English (en)
Other versions
EP2929170A1 (fr
Inventor
Matthias Ortmann
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.)
Audi AG
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Audi AG
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Publication date
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Publication of EP2929170A1 publication Critical patent/EP2929170A1/fr
Application granted granted Critical
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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 
    • F02F1/24—Cylinder heads
    • F02F1/26—Cylinder heads having cooling means
    • F02F1/36—Cylinder heads having cooling means for liquid cooling
    • F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream 
    • 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
    • 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 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • 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
    • F01P2003/024—Cooling cylinder heads

Definitions

  • the invention relates to an internal combustion engine having a plurality of cylinders, which are each assigned two inlet valves and two outlet valves, which are respectively arranged in a valve seat of a cylinder head of the internal combustion engine, and a coolant distribution chamber and a coolant collecting chamber, wherein two coolant channels are formed in the cylinder head for each cylinder, each fluidically connected to the corresponding coolant distribution chamber and the corresponding coolant collecting chamber.
  • the internal combustion engine may have any number of cylinders. Alternatively, only a single cylinder can be provided.
  • the cylinders are at least partially formed in a cylinder crankcase of the internal combustion engine and are completed or limited in a direction of the cylinder head. In this case, a combustion chamber of the cylinder is located on the side facing the cylinder head.
  • each cylinder at least four valves are assigned. Two of the valves are designed as intake valves and two more of the valves as exhaust valves. The valves are arranged in valve seats of the cylinder head, which open into the cylinder or the combustion chamber.
  • a cooling device is associated with each cylinder.
  • This consists of the coolant distribution chamber, the coolant collection chamber and at least two coolant channels.
  • the coolant channels are formed in the cylinder head, are therefore in this before as cavities. This can also be the case for the two chambers. Alternatively, however, these can also be present in the cylinder crankcase, in particular be designed as cavities in this.
  • the cavities of the cylinder head and / or the cylinder crankcase are produced, for example, during a casting process.
  • the two coolant channels of each cylinder are fluidly connected to the coolant distribution chamber of the cylinder and the coolant collection chamber of the cylinder, so that a coolant, which is supplied to the coolant distribution chamber, pass through the coolant channels in the coolant collection chamber and can be removed from there.
  • a coolant flow is guided transversely to the internal combustion engine in the longitudinal direction from the outlet side to the inlet side of the cylinder head and a second receiving slot for a glow plug between two intake valves associated inlet channels at least partially surrounded by the coolant space, and that a region between an inlet channel and The second receiving shaft of coolant can be flowed through.
  • a first of the coolant channels extends on a first side about a first of the inlet valves and on a first side opposite the second side to a first of the exhaust valves, and that a second of the coolant channels on the first side to a second of the inlet valves and on the second side extends around a second of the exhaust valves.
  • the coolant channels are, for example, S-shaped or, in the opposite case, have the shape of a mirrored S about its vertical axis.
  • the coolant channels thus have at least similar curvatures to one another or at least the same curvature.
  • the first of the coolant channels is present in regions on the first side of the first of the inlet valves and partially on the second side of the first of the exhaust valves, while the second of the coolant channels in regions on the first side of the second of the intake valves and partially disposed on the second side of the second of the exhaust valves.
  • reliable cooling in the region between the two inlet valves can be achieved with such a design or such a profile of the coolant channels.
  • an additional cooling channel must be present, through which the wall thickness is weakened in this area.
  • the rigidity of the cylinder head must be increased. Accordingly, should be dispensed with additional cooling channels. This is possible with the help of the course of the coolant channels described here.
  • improved cooling of an injector arranged between the valves and / or a candle provided there, in particular spark plug and / or glow plug can be achieved.
  • the coolant channels are arranged in the same plane, which is in particular perpendicular to longitudinal central axes of the cylinder.
  • a curvature of the coolant channels is correspondingly only within the said plane or perpendicular to this before.
  • the plane is perpendicular to the longitudinal center axes of the cylinders, which coincide, for example, with a direction of movement of arranged in the cylinders piston.
  • each coolant distribution chamber is connected via a coolant inlet port and each coolant collection chamber via a coolant outlet port to a coolant circuit of the internal combustion engine.
  • Coolant can be supplied to the coolant distribution chamber via the coolant inlet connection, which then passes through the coolant channels to the coolant collection chamber. From this, the coolant can in turn be removed through the coolant outlet port.
  • Both the coolant inlet port and the coolant outlet port are connected to the coolant circuit the internal combustion engine connected or at least connectable.
  • the coolant inlet ports of all cylinders and the coolant outlet ports of all cylinders are connected in parallel to each other to the coolant circuit; the coolant channels are thus also fluidically parallel to each other and not connected in series.
  • a development of the invention provides that the coolant channels of each cylinder have the same flow cross-section. Thus, there is no difference in the flow cross sections between the coolant channels assigned to the cylinders. Particularly preferably, the coolant channels of all cylinders are formed with the same flow cross-section. Furthermore, provision may be made for the coolant channels to have the same flow cross-section over their entire longitudinal extension, that is to say in the main flow direction of the coolant.
  • a further embodiment of the invention provides that the first of the intake valves and the first of the exhaust valves and the second of the intake valves and the second of the exhaust valves are each arranged symmetrically with respect to a plane of symmetry extending through the longitudinal central axis.
  • the planes of symmetry of all cylinders are arranged parallel to one another.
  • the plane of symmetry is preferably perpendicular to a longitudinal axis of the internal combustion engine that extends through all longitudinal central axes of the cylinders.
  • coolant fluidically branches off a coolant line between the coolant distribution chamber and the coolant collecting chamber of at least one of the coolant channels.
  • the coolant channels are preferably flow-connected only via the coolant distribution chamber and the coolant collection chamber. So they are fluidly separated along their course.
  • coolant is taken from or fed to at least one of the coolant channels, for which purpose the coolant line opens into this coolant channel or branches off from it.
  • the coolant line is connected on its side facing away from the coolant channel to a further region of the internal combustion engine, for example a cooling pocket of the internal combustion engine or of the cylinder head.
  • the invention further relates to a method for producing an internal combustion engine, in particular an internal combustion engine according to the foregoing.
  • the internal combustion engine has several cylinders, each having two intake valves and two exhaust valves are assigned, which are each arranged in a valve seat of a cylinder head of the internal combustion engine.
  • Each cylinder is also associated with a coolant distribution chamber and a coolant collection chamber formed in either the cylinder head or a cylinder crankcase and at least two coolant channels formed in the cylinder head.
  • the coolant channels are each fluidly connected to the corresponding coolant distribution chamber and the corresponding coolant collection chamber.
  • a first of the coolant channels are formed on a first side about a first of the intake valves and on a second side opposite the first side about a first of the exhaust valves.
  • a second of the coolant channels is formed on the first side to a second of the intake valves and on the second side extending around a second of the exhaust valves.
  • the advantages of such an arrangement have already been discussed above.
  • the internal combustion engine and the method for the production thereof can be developed further in accordance with the above statements, so that reference is made to this extent.
  • the production of the coolant channels is preferably carried out using sand cores.
  • the coolant channels and the coolant distribution chamber and the coolant collection chamber are preferably formed completely in the cylinder head.
  • an at least partial, in particular complete, arrangement in the cylinder crankcase can be provided for the two chambers.
  • the figure shows a sectional view through an area of an internal combustion engine 1, namely by a cylinder head 2 of the internal combustion engine 1.
  • the internal combustion engine 1 has a plurality of cylinders not shown here, which are each associated with two inlet valves and two exhaust valves, which are not shown here.
  • the inlet valves are arranged in valve seats 3 and 4, the exhaust valves in valve seats 5 and 6 or can be arranged.
  • the arrangement of an intake valve or exhaust valve is, so it always means the arrangement of the corresponding valve seat 3 to 6 or vice versa.
  • each cylinder adeffenverteilhunt 8
  • a coolant collecting chamber 9 and at least two coolant channels 10 and 11 are assigned.
  • the coolant channels 10 and 11 all run in the same plane, in particular a plane which is perpendicular to longitudinal central axes 12 of the cylinder.
  • the level corresponds to the drawing level selected here. In this case, centers of the coolant channels 10 and 11 each extend in this plane, while the coolant channels 10 and 11 extend, of course, downward and upward over this plane.
  • the coolant channels 10 and 11 in the embodiment shown here are each designed in an S-shape. Alternatively, however, a mirrored configuration can also be provided. The design takes place in such a way that the coolant channels 10 and 11 flow-separated from the coolant distribution chamber 8 to the coolant collection chamber 9.
  • One of the coolant channels 10 and 11, in this case the coolant channel 11, extends in plan view between the valve seats 3 and 4 for the intake valves and the other of the coolant channels 10 and 11, here the coolant channel 11, between the valve seats 5 and 6 for the exhaust valves , In this way, a particularly good cooling effect for the intake valves and the exhaust valves is achieved.
  • the coolant distribution chamber 8 receives coolant from a coolant circuit of the internal combustion engine 1 via a coolant inlet port. This flows subsequently from the coolant distribution chamber 8 into the coolant collecting chamber 9 and passes from this through a coolant outlet port in turn into the coolant circuit of the internal combustion engine 1.
  • the coolant inlet ports of all cylinders are connected in parallel to the coolant circuit of the internal combustion engine 1.
  • coolant channels 10 and 11 In order to achieve a uniform flow through the coolant channels 10 and 11, they have the same flow area, in particular over their entire longitudinal extent. It can be provided that of at least one of the coolant channels 10 and 11, here some of the coolant channels 10, a coolant line 13 branches off. This is on its side facing away from the coolant channels 10 side to a coolant pocket 14, which is also formed in the cylinder head 2, connected. With the aid of the coolant line 13, regions of the cylinder head 2 arranged remotely from the valve seats 3 to 6 can be reliably supplied with coolant.

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  • 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)

Claims (6)

  1. Moteur à combustion interne (1) comprenant plusieurs cylindres, auxquels sont associées respectivement une première soupape d'admission et une deuxième soupape d'admission ainsi qu'une première soupape d'échappement et une deuxième soupape d'échappement, qui sont disposées respectivement dans un logement de soupape (3, 4, 5, 6) d'une culasse (2) du moteur à combustion interne (1), ainsi qu'une chambre de distribution de liquide de refroidissement (8) et une chambre de collecte de liquide de refroidissement (9), deux canaux de liquide de refroidissement (10, 11) étant réalisés dans la culasse (2) pour chaque cylindre, lesquels canaux de liquide de refroidissement sont raccordés selon la mécanique des fluides respectivement à la chambre de distribution de liquide de refroidissement (8) correspondante et à la chambre de collecte de liquide de refroidissement (9) correspondante, caractérisé en ce que les canaux de liquide de refroidissement (10, 11) s'étendent séparément l'un de l'autre selon la mécanique des fluides depuis la chambre de distribution de liquide de refroidissement (8) en direction de la chambre de collecte de liquide de refroidissement (9), et en ce qu'un premier canal de liquide de refroidissement des canaux de liquide de refroidissement (10) s'étend sur un premier côté de la première soupape d'admission autour de la première soupape d'admission et sur un deuxième côté, opposé au premier côté, de la première soupape d'échappement autour de la première soupape d'échappement, et en ce qu'un deuxième canal de liquide de refroidissement des canaux de liquide de refroidissement (11) s'étend sur le premier côté de la deuxième soupape d'admission autour de la deuxième soupape d'admission et sur le deuxième côté, opposé au premier côté, de la deuxième soupape d'échappement autour de la deuxième soupape d'échappement.
  2. Moteur à combustion interne selon la revendication 1, caractérisé en ce que les canaux de liquide de refroidissement (10, 11) sont disposés dans le même plan, qui est en particulier perpendiculaire à des axes médians longitudinaux (12) des cylindres.
  3. Moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque chambre de distribution de liquide de refroidissement (8) est raccordée par l'intermédiaire d'un raccord d'admission de liquide de refroidissement à un circuit à liquide de refroidissement du moteur à combustion interne (1), et en ce que chaque chambre de collecte de liquide de refroidissement (9) est raccordée par l'intermédiaire d'un raccord d'échappement de liquide de refroidissement audit circuit à liquide de refroidissement du moteur à combustion interne.
  4. Moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce que les canaux de liquide de refroidissement (10, 11) de chaque cylindre présentent la même section transversale d'écoulement.
  5. Moteur à combustion interne selon l'une quelconque des revendications 2 à 4, caractérisé en ce que la première des soupapes d'admission et la première des soupapes d'échappement ainsi que la deuxième des soupapes d'admission et la deuxième des soupapes d'échappement sont disposées respectivement de manière symétrique l'une par rapport à l'autre par rapport à un plan de symétrie passant par l'axe médian longitudinal (12).
  6. Moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une conduite de liquide de refroidissement (13) forme un embranchement avec au moins l'un des canaux de liquide de refroidissement (10, 11) selon la mécanique des fluides entre la chambre de distribution de liquide de refroidissement (8) et la chambre de collecte de liquide de refroidissement (9).
EP13821061.2A 2012-12-05 2013-12-05 Moteur à combustion interne Active EP2929170B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012023803.7A DE102012023803B3 (de) 2012-12-05 2012-12-05 Brennkraftmaschine
PCT/EP2013/003669 WO2014086489A1 (fr) 2012-12-05 2013-12-05 Moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP2929170A1 EP2929170A1 (fr) 2015-10-14
EP2929170B1 true EP2929170B1 (fr) 2017-02-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP13821061.2A Active EP2929170B1 (fr) 2012-12-05 2013-12-05 Moteur à combustion interne

Country Status (5)

Country Link
US (1) US9828935B2 (fr)
EP (1) EP2929170B1 (fr)
CN (1) CN104968924B (fr)
DE (1) DE102012023803B3 (fr)
WO (1) WO2014086489A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2551961B (en) 2016-06-24 2019-06-05 Jaguar Land Rover Ltd Coolant apparatus
CN111911309B (zh) * 2019-05-08 2022-11-15 康明斯公司 用于提供衬套的改善的冷却性能的汽缸缸体设计

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DE2514592C2 (de) * 1975-04-03 1982-10-14 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Einzelzylinderkopf
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Also Published As

Publication number Publication date
CN104968924B (zh) 2018-04-03
US9828935B2 (en) 2017-11-28
CN104968924A (zh) 2015-10-07
WO2014086489A1 (fr) 2014-06-12
DE102012023803B3 (de) 2014-02-06
US20160025033A1 (en) 2016-01-28
EP2929170A1 (fr) 2015-10-14

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