EP3887663A1 - Arrangement de cylindres et procédé de refroidissement de l'arrangement de cylindres - Google Patents

Arrangement de cylindres et procédé de refroidissement de l'arrangement de cylindres

Info

Publication number
EP3887663A1
EP3887663A1 EP19839314.2A EP19839314A EP3887663A1 EP 3887663 A1 EP3887663 A1 EP 3887663A1 EP 19839314 A EP19839314 A EP 19839314A EP 3887663 A1 EP3887663 A1 EP 3887663A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
temperature
casing
cylinder liner
arrangement
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.)
Withdrawn
Application number
EP19839314.2A
Other languages
German (de)
English (en)
Inventor
Herrmann Rottengruber
Johannes Oder
Thilo Wagner
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.)
Otto Von Guericke Universitaet Magdeburg
Original Assignee
Otto Von Guericke Universitaet Magdeburg
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 Otto Von Guericke Universitaet Magdeburg filed Critical Otto Von Guericke Universitaet Magdeburg
Publication of EP3887663A1 publication Critical patent/EP3887663A1/fr
Withdrawn legal-status Critical Current

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
    • 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 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/14—Cylinders 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
    • F01P2003/021—Cooling cylinders

Definitions

  • the invention relates to a cylinder assembly comprising a cylinder liner for receiving a piston and a cylinder block surrounding the cylinder liner.
  • the invention also relates to a method for cooling a cylinder arrangement, wherein a cylinder liner for receiving a piston and an area surrounding the cylinder liner is provided, and wherein the heat generated in a combustion chamber of the cylinder liner is transferred into the area surrounding the cylinder liner.
  • an area surrounding the cylinder liner is a cylinder block or a cylinder crankcase, in which or into which the heat generated is transferred or given off.
  • the combustion process of the fuel creates high temperatures in the combustion chambers of the cylinders, which transfer heat from the combustion chambers or the cylinders, for example into an area surrounding the cylinders, such as a cylinder block or a cylinder crankcase.
  • a cooling system can work, for example, with a cooling liquid which is passed through special channels arranged in the cylinder block and thus ensures heat removal from the cylinder block or the cylinder crankcase. In this way, for example, heat transfer from the combustion chamber of the internal combustion engine to a coolant in a coolant circuit of a vehicle, which has a corresponding cooler or heat exchanger for cooling the coolant, is achieved.
  • the active or passive cooling systems used here reduce the thermal load, in particular of the cylinders or cylinder liners and the pistons of the internal combustion engine.
  • thermal transfer of the lubricants used is prevented by heat transfer.
  • a disadvantage of such a cooling system is that the heat transfer from the combustion chamber of the internal combustion engine takes place immediately after the start of the internal combustion engine even in an operating phase. In this first temperature range or state, in which the cylinders or the cylinder liners have a low temperature, it would be advantageous to prevent heat dissipation until the internal combustion engine has reached a so-called operating temperature in the region of the cylinders or the cylinder liners.
  • a quick reaching such an operating temperature which can be, for example, in a range from 100 ° C to about 150 ° C, would improve the effectiveness of the internal combustion engine, lead to fuel savings and reduce emissions, since for optimal operation one Catalysts a working temperature must be reached. However, this working temperature is usually only reached after the internal combustion engine has warmed up.
  • a cylinder block for a water-cooled internal combustion engine with at least one cylinder surrounded by a cooling jacket with a connection surface for a cylinder head which has at least one transfer opening for coolant from the cooling jacket into the cylinder head.
  • the object of the document to be solved is to influence both the flow of the coolant between the cylinder block and the cylinder head and the flow within the cylinder block in the simplest possible way.
  • a flow limiter is inserted into the transfer opening, the flow limiter being at least partially arranged inside the cooling jacket. It is also disclosed that the flow limiter is formed by a tube, the outer diameter The diameter of the flow limiter essentially corresponds to the diameter of the transition opening and the flow limiter consists of a metal or plastic.
  • a piston-cylinder unit for an internal combustion engine in particular for gasoline and diesel engines, is known.
  • the task to be solved is to propose a piston-cylinder unit in which no piston rings are required for sealing between the piston and the cylinder liner, so that overall a thermally highly resilient unit is created.
  • the cylinder sleeve is surrounded by a bandage made of a fiber composite material, the thermal expansion in the radial direction is less than that of the cylinder bushing se, the expansion hindrance caused by the bandage being different over the length of the cylinder bushing.
  • the piston has a cap with a
  • DE 36 43 828 A1 discloses an engine cylinder and engine piston for an un-cooled internal combustion engine, in particular for a four-stroke diesel engine with an exhaust gas turbocharger. It is envisaged to create a reliably functioning piston seal towards the combustion chamber with little leakage of combustion gases and at the same time an exactly working, central piston guide with respect to the engine cylinder.
  • the piston skirt is provided with a labyrinth seal that runs contact-free with the least possible play within the cylinder liner, and that for the exclusive guidance of the engine piston against the engine cylinder on the underside of the piston head, a piston guide tube is firmly inserted, which slides within a fixed guide bushing arranged in a region with relatively low temperatures and serves with its lower end for the articulation of a connecting rod. In this way, the friction and wear of the mechanical components can be reduced and active cooling can be dispensed with.
  • Vehicle catalysts also referred to as catalyst or cat.
  • Vehicle catalysts are used for exhaust gas aftertreatment in vehicles with internal combustion engines.
  • the task of the catalytic converter is to reduce the pollutant emissions in the exhaust gas in such a way that predetermined limit values for the emission of air pollutants are reached or fallen below. These limit values are regulated, for example, in various Euro standards.
  • a specified working temperature must be reached at which the chemical reactions necessary for cleaning can take place. This temperature is referred to as the "light-off temperature”.
  • the catalytic converter does not work properly or in an operating mode in which the exhaust gases are only cleaned to a limited extent.
  • the aim is to achieve the "light-off temperature" as soon as possible after starting an internal combustion engine from a cold operating state.
  • AT 228 013 B discloses a water-cooled internal combustion engine and a method for producing a cooling water guide jacket.
  • the object of the invention is to manufacture the closed cooling water guiding jacket provided to prevent cavitation from a material which enables it to be formed directly in the cylinder block.
  • the closed cooling water guiding jacket which surrounds the entire cylinder circumference of the cylinder liner with play, consists of a plastic body formed directly in the cooling water space of the cylinder block and made of a plastic which is resistant to hot water or corrosion protection oil, e.g. Polyester alone, or with a filler of asbestos, glass wool, sawdust and the like is formed.
  • DE 969 880 B discloses an insert barrel with the same surrounding sleeve for piston engines.
  • the description relates in particular to a cartridge liner intended for piston engines, especially internal combustion engines, the upper collar of which is clamped on the one hand between the cylinder head and on the other hand between a sleeve surrounding the sleeve and resiliently supported on the cylinder block, the invention being that the sleeve is itself with its lower contact surface against the guide collar serving to guide the lower end of the liner.
  • a disadvantage of the solutions known from the prior art is therefore that the heat transfer from the combustion chamber of an internal combustion engine into a cylinder block and thus into the cooling water is only determined via the existing temperature difference.
  • the object of the invention is now to provide a cylinder arrangement and method for cooling the cylinder arrangement, with which a temperature-dependent control of the heat transfer from a combustion chamber located in a cylinder liner of an internal combustion engine into an area surrounding the cylinder liner, such as a cylinder block or a cylinder crankcase , he follows.
  • the object is achieved by an arrangement with the features of claim 1 of the independent claims. Further developments are specified in the dependent claims 2 to 5. The object is also achieved by a method having the features according to claim 6 of the independent claims. Further developments are specified in the dependent claims 7 to 11.
  • a cylinder liner or an inner sleeve in the cylinder arrangement of an internal combustion engine, which is in contact with the piston in the manner customary in the prior art. Sealing to the combustion chamber can also be carried out in a known manner using piston rings.
  • the cylinder liner has a wear-resistant surface, which is also referred to as a running surface, towards the inside of the piston.
  • the cylinder liner has a coefficient of expansion similar to that of the piston or the piston rings, so as not to have a negative effect on the play between the piston and the cylinder liner during heating during operation of the internal combustion engine.
  • the invention provides for the heat transfer between a cylinder liner in a cylinder arrangement of an internal combustion engine and an area surrounding the cylinder liner or the cylinder arrangement, such as a cylinder block or a cylinder crankcase, as a function of the temperature of the cylinder liner or the temperature in the cylinder arrangement, such as in a combustion chamber.
  • a first temperature range in which the temperature of the internal combustion engine, for example after starting the internal combustion engine, is low, the heat transfer from the area of the cylinder liner to the area surrounding the cylinder liner, such as a cylinder block or a Cylinder crankcase to interrupt or greatly reduce.
  • a first temperature range can be, for example, between -20 ° C and 100 ° C.
  • a second temperature range or state in which the temperature of the internal combustion engine, for example after a warm-up phase of the internal combustion engine, is higher or higher it is provided that the heat transfer between the cylinder liner of the cylinder arrangement and the area surrounding the cylinder liner, such as a To improve the cylinder block or a cylinder crankcase in order to ensure the heat transfer or cooling required for operating the internal combustion engine.
  • the second temperature range is also dependent on the type and structure of the internal combustion engine and can be, for example, between 100 ° C. and approximately 150 ° C., in particular between 100 ° C. and 140 ° C.
  • a jacket that changes in its temperature-dependent extent is provided.
  • This casing is arranged between the cylinder liner and the area surrounding the cylinder liner, for example a cylinder block.
  • the jacket which changes in its extent as a function of temperature, causes a gap to form between the jacket itself and the area or the cylinder block of the internal combustion engine surrounding the cylinder liner within a first temperature range.
  • the gap formed which can be filled with air, for example, reduces the heat transfer from the cylinder liner to the cylinder block or to the cylinder. the crankcase. This reduced heat transfer leads to a rapid heating of the cylinder liner and the piston of the internal combustion engine and thus to the operating temperature being reached more quickly.
  • the temperature-dependent in its expansion changing jacket causes within a second temperature range, which is different from the first temperature range, no formation of a gap between the casing and the area surrounding the cylinder liner or the cylinder block of the internal combustion engine.
  • the jacket ensures a heat transfer in the second Temperaturbe rich, in which the internal combustion engine has already reached its operating temperature. Since there is no longer a gap between the casing and the area surrounding the cylinder liner or the cylinder block of the internal combustion engine, the heat transfer into the area of the cylinder block or into the area of the cylinder crankcase, which can be flowed through by a cooling liquid, can take place undisturbed.
  • the casing has a different coefficient of thermal expansion than the cylinder liner.
  • the casing changes its radial extent or its circumference with increasing temperature and closes the gap formed.
  • the casing from materials such as a bimetal or a shape memory alloy.
  • the casing changes its radial expansion or its circumference with increasing temperature and closes the gap formed.
  • Another alternative is to provide the casing with an arrangement for temperature-dependent, active changing of its radial extent or its circumference.
  • it is provided to control or to effect this change in the casing by means of an actuator.
  • an actuator can be operated electrically, for example.
  • such an actuator can also be operated piezoelectrically, magnetically or electromagnetically.
  • Fig. 1 a cylinder arrangement according to the invention in a first tempera ture range
  • Fig. 2 a cylinder arrangement according to the invention in a second tempera ture range.
  • FIG. 1 shows the cylinder arrangement 1 according to the invention, which is arranged in an internal combustion engine, in a first temperature range.
  • This first temperature range occurs, for example, in a phase in which the cylinder arrangement 1 is cold and the internal combustion engine has not yet reached a so-called operating temperature. Such a state occurs, for example, when the internal combustion engine is started.
  • the cylinder arrangement 1 comprises a cylinder liner 2, in which a piston 3 moves along the running surface 4.
  • the piston 3 is connected via the connecting rod 5 to a crankshaft (not shown) in the usual way.
  • the combustion chamber 6, which is formed by a cylinder head, not shown, arranged above the cylinder liner 2.
  • the tread 4 has a wear-resistant surface. Over this running surface 4, the piston 3 moves, which can advantageously be provided with piston rings, which are not shown in Figure 1.
  • the cylinder liner 2 is surrounded by a casing 9 which, for example, surrounds the entire cylinder liner 2.
  • the cylinder liner 2 with its Jacket 9 is surrounded by an area 7, which is to be, for example, a cylinder block 7 or a cylinder crankcase.
  • such an area or cylinder block 7 has channels 8 through which a cooling liquid flows.
  • the temperature of the internal combustion engine as well as the cylinder arrangement 1 is low.
  • the internal combustion engine In this phase, also referred to as the cold state of the internal combustion engine, the internal combustion engine has, for example, a temperature similar to that of its surroundings. Depending on the weather, this temperature can be, for example, in the range from -20 ° C to 100 ° C, in particular in a range from -15 ° C to 30 ° C.
  • a gap 10 filled with a gas is formed between the casing 9, the cylinder liner 2 and the cylinder block 7.
  • a gas can be air, for example.
  • This gas-filled gap 10 has an insulating effect, that is, the heat transfer between the cylinder liner 2 and the cylinder block 7 is greatly restricted or reduced. In this case, the heat transfer between the jacket 9, the cylinder liner 2 and the cylinder block 7 is limited to convection and heat radiation in the gap 10 and is thus greatly reduced.
  • Such a device additionally required in a catalytic converter can be, for example, an electric heater.
  • Another advantage of quickly reaching the operating temperature of the internal combustion engine or the working temperature of the catalytic converter is that fuel is saved.
  • FIG. 2 shows a cylinder arrangement 1 according to the invention in a second temperature range or state.
  • This second state is, for example, a phase in which the internal combustion engine with the cylinder arrangement 1 is warm and has reached the operating temperature. Such a state occurs, for example, during operation of the internal combustion engine after a warm-up time of, for example, a few minutes. It is known that this time also depends on the load of the internal combustion engine.
  • FIG. 2 shows the cylinder arrangement 1 of the cylinder liner 2, in which the piston 3 moves along the running surface 4.
  • the piston 3 is connected via the connecting rod 5 with a crankshaft, not shown, in the usual way.
  • Above the piston 3 is the combustion chamber 6, which is formed by a cylinder head, not shown, arranged above the cylinder liner 2.
  • the cylinder liner 2 is surrounded by the casing 9, the casing 9 being enclosed by the cylinder block 7.
  • channels 8 in the cylinder block 7 are shown schematically, through which a coolant can flow during operation of the internal combustion engine.
  • the casing 9 has changed in such a way that a gap 10 no longer forms between the casing 9 and the cylinder block 7.
  • the heat produced during combustion in the combustion chamber 6 can also be generated via the cylinder liner 2 and the casing 9 in the Cylinder block 7 are derived.
  • the heat transfer between the casing 9 of the cylinder bushing 2 and the cylinder block 7 is possible by means of heat conduction, and is thus substantially greater than in the first temperature range of the internal combustion engine.
  • the coolant flowing through the channels 8 is provided, which circulates in a known coolant circuit of an internal combustion engine and thus contributes to heat transfer from the cylinder block 7.
  • the casing 9 consists of a material which has a coefficient of thermal expansion different from that of the cylinder liner 2.
  • the jacket 9 due to their thermal expansion and thus temperature-dependent in a first cold state of the first temperature range, he form a gap 10 to the cylinder block 7 out.
  • the casing 9 closes the gap 10 due to its thermal expansion.
  • the casing 9 has a thermally active construction which changes the expansion of the casing 9 as a function of the temperature.
  • a thermally active construction which changes the expansion of the casing 9 as a function of the temperature.
  • bimetals or a shape memory alloy are used in the casing 9 or in the area of the casing 9.
  • Such a casing 9 forms a corresponding gap 10 in a first temperature range or low temperature state.
  • the bimetals or the shape memory alloy of the sheath 9 expand, the gap 10 being closed, for example at a defined temperature.
  • the casing 9 has an active adjustment by means of which the expansion of the casing 9 can be controlled, for example in its radial direction or its circumference.
  • actuators with a corresponding adjustment direction for the casing 9 are used.
  • Such actuators can work, for example, electrically, piezoelectrically or magnetically and thus change the gap 10 as a function of temperature.
  • the principle or structure described for the casing 9 can also be applied to the areas of the cylinder head of the internal combustion engine or the pistons 3.

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)

Abstract

L'invention concerne un arrangement de cylindres (1) et un procédé de refroidissement de l'arrangement de cylindres (1) et a pour objet d'indiquer une solution par laquelle est réalisée une commande du transfert de chaleur en fonction de la température depuis une chambre de combustion (6) d'un moteur à combustion interne située dans une chemise de cylindre (2) de l'arrangement de cylindres (1) vers une zone (7) entourant la chemise de cylindre (2), telle qu'un bloc-cylindres ou un carter de moteur. Cet objet est réalisé par l'arrangement en ce qu'une enveloppe (9) dont la dilatation varie en fonction de la température est disposée entre la chemise de cylindre (2) et la zone (7) qui entoure la chemise de cylindre (2). Cet objet est réalisé par le procédé en ce que la chemise de cylindre (2) est pourvue d'une enveloppe (9) qui entoure la chemise de cylindre (2) et dont la dilatation varie en fonction de la température, en ce que dans une première plage de température, l'enveloppe (9) forme un espace (10) entre l'enveloppe (9) et la zone (7), et en ce que dans une deuxième plage de température, l'enveloppe (9) ne forme pas d'espace (10) entre l'enveloppe (9) et la zone (7).
EP19839314.2A 2018-12-01 2019-11-27 Arrangement de cylindres et procédé de refroidissement de l'arrangement de cylindres Withdrawn EP3887663A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018009442.2A DE102018009442B3 (de) 2018-12-01 2018-12-01 Zylinderanordnung und Verfahren zum Kühlen der Zylinderanordnung
PCT/DE2019/000304 WO2020108677A1 (fr) 2018-12-01 2019-11-27 Arrangement de cylindres et procédé de refroidissement de l'arrangement de cylindres

Publications (1)

Publication Number Publication Date
EP3887663A1 true EP3887663A1 (fr) 2021-10-06

Family

ID=69182436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19839314.2A Withdrawn EP3887663A1 (fr) 2018-12-01 2019-11-27 Arrangement de cylindres et procédé de refroidissement de l'arrangement de cylindres

Country Status (5)

Country Link
US (1) US11408366B2 (fr)
EP (1) EP3887663A1 (fr)
CN (1) CN113167191A (fr)
DE (1) DE102018009442B3 (fr)
WO (1) WO2020108677A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115263591B (zh) * 2022-08-22 2024-09-20 义乌吉利动力总成有限公司 发动机和车辆

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969880C (de) * 1952-04-27 1958-07-24 Augsburg Nuernberg A G Zweigni Einsatzlaufbuechse mit dieselbe umgebender Huelse fuer Kolbenmotoren
AT228013B (de) * 1961-07-28 1963-06-25 Simmering Graz Pauker Ag Wassergekühlte Verbrennungskraftmaschine und Verfahren zur Herstellung eines Kühlwasserleitmantels
DE3134768C2 (de) 1981-09-02 1984-12-20 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5300 Bonn Kolbenzylinderaggregat für Brennkraftkolbenmaschinen, insbesondere für Otto- und Dieselmotoren
DE3643828A1 (de) * 1986-12-20 1988-06-30 Mtu Muenchen Gmbh Motorzylinder und -kolben fuer eine ungekuehlte brennkraftkolbenmaschine, insbesondere fuer einen viertakt-dieselmotor mit abgasturbolader
US4926801A (en) * 1987-12-22 1990-05-22 Mack Trucks, Inc. Wet/dry cylinder liner for high output engines
EP0483134B1 (fr) * 1988-07-29 1993-06-16 Ludwig Elsbett Moteur a combustion interne
JPH02241953A (ja) * 1989-03-13 1990-09-26 Mazda Motor Corp エンジンのシリンダブロック
WO2005024214A2 (fr) 2003-09-09 2005-03-17 Avl List Gmbh Bloc-cylindres pour moteur a combustion interne refroidi par eau
JP4345754B2 (ja) * 2006-02-09 2009-10-14 トヨタ自動車株式会社 蓄熱装置及びエンジン
JP4446989B2 (ja) * 2006-09-08 2010-04-07 トヨタ自動車株式会社 シリンダブロックおよび内燃機関
JP2011064142A (ja) * 2009-09-17 2011-03-31 Toyoda Gosei Co Ltd ウォータジャケット構造
CN102072040B (zh) * 2009-11-19 2013-04-17 本田技研工业株式会社 内燃机
JP5569335B2 (ja) * 2010-10-27 2014-08-13 トヨタ自動車株式会社 シリンダブロックの冷却構造
JP6283011B2 (ja) * 2015-11-12 2018-02-21 ニチアス株式会社 シリンダボア壁の保温具、内燃機関及び自動車
JP6780836B2 (ja) 2015-12-22 2020-11-04 内山工業株式会社 スペーサ
US10424710B2 (en) * 2017-10-03 2019-09-24 GM Global Technology Operations LLC Engine with cylinder liner having a thermoelectric module, and method of operating the engine

Also Published As

Publication number Publication date
US11408366B2 (en) 2022-08-09
WO2020108677A1 (fr) 2020-06-04
US20220018307A1 (en) 2022-01-20
CN113167191A (zh) 2021-07-23
DE102018009442B3 (de) 2020-04-16

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