EP0539815B1 - Moteur à combustion interne avec circuit de refroidissement perfectionné - Google Patents

Moteur à combustion interne avec circuit de refroidissement perfectionné Download PDF

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Publication number
EP0539815B1
EP0539815B1 EP92117772A EP92117772A EP0539815B1 EP 0539815 B1 EP0539815 B1 EP 0539815B1 EP 92117772 A EP92117772 A EP 92117772A EP 92117772 A EP92117772 A EP 92117772A EP 0539815 B1 EP0539815 B1 EP 0539815B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
internal combustion
inlet
combustion engine
cylinder head
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
EP92117772A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0539815A1 (fr
Inventor
Urs Wenger
Hans Rudolf Jenni
Hans Peter Goetti
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.)
Swatch Group Management Services AG
Original Assignee
SMH Management Services 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 SMH Management Services AG filed Critical SMH Management Services AG
Publication of EP0539815A1 publication Critical patent/EP0539815A1/fr
Application granted granted Critical
Publication of EP0539815B1 publication Critical patent/EP0539815B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
    • 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
    • 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
    • F02F1/16—Cylinder liners of wet type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1808—Number of cylinders two
    • 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
    • F02F2001/104—Cylinders; Cylinder heads  having cooling means for liquid cooling using an open deck, i.e. the water jacket is open at the block top face
    • 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
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/247—Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis

Definitions

  • the present invention relates to an internal combustion engine, the improved liquid cooling circuit of which tends towards optimum operating conditions, consequently reducing very significantly the levels of harmful products in the exhaust gases.
  • the present invention falls under the first category of improvements, acting on the mode of circulation of the coolant: to obtain optimum thermal efficiency, it is indeed important to maintain a regular operating temperature, at all points of the engine.
  • the coolant circulates parallel to the axis of the crankshaft and more generally to the alignment of the cylinders, in the space between the cylinders and the cylinder block ( Figures 1 and 2).
  • Whatever improvements are made acceleration, overpressure, composition of the coolant, etc.
  • there is always a gradient of temperature between the inlet and the outlet of the coolant and therefore a temperature in the combustion chamber of the first cylinder different from that of the last cylinder.
  • turbulence zones are necessarily created between the cylinder block and the cylinders, generating hot spots which are harmful to the optimal functioning of the engine.
  • the document FR 2 323 020 describes for example a device in which the coolant is admitted and then discharged, in a general direction perpendicular to the alignment plane of the cylinders, but the obviously annular of which around each cylinder liner is partitioned by at least one rib provided with a communication opening provided to produce turbulence of the coolant at the seat of the exhaust valve.
  • the abovementioned drawbacks have been remedied by virtue of the characteristics of claim 1 and by producing a cylinder block and its cylinder head designed on the one hand so that the coolant circulates perpendicularly to the plane of alignment of the cylinders, the inlet openings and the outlet openings being on the same face of the engine, - preferably on the intake side -, the outlet openings furthermore having a smaller cross section than the inlet openings for create a slight overpressure, on the other hand so that said coolant circulates around the cylinders in a space of uniform section, the passage from the cylinder block to the cylinder head being effected by chimneys, those arranged between the block- cylinders and the collar of the jacket having a lower section on the inlet / outlet side of the coolant, with respect to those located opposite.
  • the improvements according to the invention find their application in all types of engines whatever the operating mode, the number and arrangement of the cylinders, the displacement or the fuel used.
  • FIGS. 5 and 6 are shown the inlet duct 3 and the outlet duct 5 for the coolant, said ducts being respectively fixed by fixing lugs 8 and screws 9 to the cylinder block 1, and by a lug 12 and a fixing screw 13 to the cylinder head; the arrows represent the main inlet 4 of the coolant, and its main outlet 7.
  • FIG. 6 it also appears that the conduits 3 and 5 are positioned on the same face of the engine as the intake orifices 15 of the fuel mixture.
  • the inlet orifices 16 and outlet 18 for the coolant are also shown in dotted lines: this shows, in accordance with the principle diagram 4, that the outlet orifice has a diameter smaller than that of the inlet.
  • FIG. 7 shows an exploded perspective view is intended to better understand the mode of circulation of water according to the invention as well as the views and sections of the following figures.
  • the holes 10 serve to fix the tabs 8.
  • the communication chimneys between the cylinder block and the cylinder head appear the communication chimneys between the cylinder block and the cylinder head, the chimneys 22, coolant inlet / outlet side, having a smaller cross section than those 24 which are opposite; this difference appears even more clearly in FIG. 8, or in FIG. 10, where the communication orifices 23 and 25 formed in the cylinder head are shown opposite the chimneys 22 and 24 of the cylinder block.
  • This difference in section makes it possible to force the circulation of the coolant in the annular recess 34, before passing through the circulation channels 36 of the cylinder head.
  • FIG. 7 also shows that the cylinder liners 28, having upper 30 and lower collars 31 on which are provided plates 32 and 33 allowing the immobilization of said liners in rotation.
  • FIGS. 8 and 9 make it possible to understand the circulation of the coolant in the cylinder block 1 from the inlet 26 to the chimneys 22 and 24, in communication with the holes 23 and 25 respectively of the cylinder head. 2, shown in Figure 10 in bottom view.
  • FIG. 10 also shows the channels 36 for circulating the coolant between the different parts machined in the cylinder head for the valve seats 43, and the spark plug wells 44.
  • FIG. 11 which shows in dotted lines the exhaust orifices 40 of the gases, on the side opposite to the outlet orifices 18 for the coolant, makes it possible to better understand the sections represented in FIGS. 13 and 14, which, supplemented by the section of FIG. 12, illustrate the circulation of the coolant in the channels 36 of the cylinder head 2.
  • figure 15 constituted by the assembly of figures 9 and 13, represents a synthesis detailed explanations above, showing the circulation of the coolant in the cylinder block 1 and the cylinder head 2, perpendicular to the alignment of the cylinders, from the inlet orifice 16, through the annular recess 34 of the cylinder liner 28, then communication chimneys 22-23 and 24-25, to finally pass through the circulation channels 36 to the outlet orifice 18, located on the same face of the engine as the orifice inlet 16 but having a smaller diameter.
  • the coolant inlets and outlets are located on the side of the fuel mixture intake pipe; it is also possible while remaining within the framework of the invention to produce an engine having the inlets and outlets of the coolant on the side of the exhaust pipes. Likewise, while remaining within the scope of the invention, it is possible to produce engines having more than two cylinders and / or a displacement greater than 250 cc or else two-stroke engines, or engines having a fuel other than gasoline.
  • the cooling system according to the invention will in all cases allow a gain in efficiency and / or in fuel consumption.
  • the aforementioned gain as well as a reduction in the rate of harmful products in the exhaust gases is obtained by running the engine at constant speed.
  • the engines according to the invention find their application in all types of machines such as motor vehicles, and in the drive of all types of machines, such as pumps or generators of Electric power.

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)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
EP92117772A 1991-10-31 1992-10-17 Moteur à combustion interne avec circuit de refroidissement perfectionné Expired - Lifetime EP0539815B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9113606A FR2683263A1 (fr) 1991-10-31 1991-10-31 Moteur a combustion interne avec circuit de refroidissement perfectionne.
FR9113606 1991-10-31

Publications (2)

Publication Number Publication Date
EP0539815A1 EP0539815A1 (fr) 1993-05-05
EP0539815B1 true EP0539815B1 (fr) 1995-12-13

Family

ID=9418609

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92117772A Expired - Lifetime EP0539815B1 (fr) 1991-10-31 1992-10-17 Moteur à combustion interne avec circuit de refroidissement perfectionné

Country Status (8)

Country Link
US (1) US5357910A (enrdf_load_stackoverflow)
EP (1) EP0539815B1 (enrdf_load_stackoverflow)
JP (1) JP3366673B2 (enrdf_load_stackoverflow)
AT (1) ATE131577T1 (enrdf_load_stackoverflow)
CA (1) CA2081804C (enrdf_load_stackoverflow)
DE (1) DE69206756T2 (enrdf_load_stackoverflow)
ES (1) ES2083643T3 (enrdf_load_stackoverflow)
FR (1) FR2683263A1 (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19542492C1 (de) * 1995-11-15 1997-01-16 Daimler Benz Ag Flüssigkeitsgekühlter Zylinderkopf für eine mehrzylindrige Brennkraftmaschine
DE19628762A1 (de) * 1996-07-17 1998-01-22 Porsche Ag Kühlkreislauf einer Brennkraftmaschine
US5699760A (en) * 1997-03-21 1997-12-23 Ford Global Technologies, Inc. Cooling system for internal combustion engine
SE509077C2 (sv) * 1997-05-30 1998-11-30 Volvo Ab Förbränningsmotor
JP3883025B2 (ja) * 1998-03-26 2007-02-21 ヤマハマリン株式会社 筒内燃料噴射式エンジン
US6142123A (en) * 1998-12-14 2000-11-07 Cannondale Corporation Motorcycle
JP2005042654A (ja) * 2003-07-24 2005-02-17 Honda Motor Co Ltd エンジンの冷却構造
FR2897115B1 (fr) 2006-02-06 2012-09-28 Ti Automotive Fuel Systems Sas Dispositif de maintien d'une pompe electrique dans un reservoir de carburant
EP2647806A1 (en) * 2012-04-05 2013-10-09 Caterpillar Motoren GmbH & Co. KG Charge air guide element for internal combustion engine
GB2548835B (en) * 2016-03-29 2018-04-18 Ford Global Tech Llc A cooling system
FR3067759B1 (fr) * 2017-06-14 2021-01-15 Renault Sas Moteur comprenant un dispositif de refroidissement de culasse et carter-cylindres
US11181032B2 (en) * 2018-09-18 2021-11-23 Deere & Company Cylinder head with improved valve bridge cooling

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1625835A (en) * 1925-03-14 1927-04-26 O D Sutton Internal-combustion engine
DE2539478A1 (de) 1975-09-05 1977-03-10 Kloeckner Humboldt Deutz Ag Wassergekuehlte hubkolben-brennkraftmaschine
US4108118A (en) * 1976-12-09 1978-08-22 Robert Jay George Water jacketed cylinder
US4284037A (en) * 1978-12-18 1981-08-18 Cummins Engine Company, Inc. Internal combustion engine coolant system
DE2904167C2 (de) * 1979-02-03 1982-07-08 Bayerische Motoren Werke AG, 8000 München Im Druckgießverfahren herstellbarer Zylinderkopf für wassergekühlte Brennkraftmaschinen
IT8223010U1 (it) * 1982-09-23 1984-03-23 Stabilimenti Mecc V M S P A Motore a combustione interna con dissipatore di calore di ingombro ridotto.
JPS5985347U (ja) * 1982-12-01 1984-06-09 日産自動車株式会社 内燃機関のシリンダブロツク
CA1337039C (en) * 1988-08-23 1995-09-19 Tsuneo Konno Cooling system for multi-cylinder engine
US5115771A (en) * 1989-08-30 1992-05-26 Kabushiki Kaisha Komatsu Seisakusho Method of cooling cylinder liners in an engine

Also Published As

Publication number Publication date
FR2683263A1 (fr) 1993-05-07
EP0539815A1 (fr) 1993-05-05
DE69206756D1 (de) 1996-01-25
CA2081804C (en) 2002-08-20
JP3366673B2 (ja) 2003-01-14
CA2081804A1 (en) 1993-05-01
ATE131577T1 (de) 1995-12-15
JPH05215009A (ja) 1993-08-24
US5357910A (en) 1994-10-25
DE69206756T2 (de) 1996-09-05
ES2083643T3 (es) 1996-04-16
FR2683263B1 (enrdf_load_stackoverflow) 1995-04-14

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