EP0347580B1 - Schmiersystem mit Spritzkühlung der Kolben einer Brennkraftmaschine - Google Patents

Schmiersystem mit Spritzkühlung der Kolben einer Brennkraftmaschine Download PDF

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Publication number
EP0347580B1
EP0347580B1 EP89108801A EP89108801A EP0347580B1 EP 0347580 B1 EP0347580 B1 EP 0347580B1 EP 89108801 A EP89108801 A EP 89108801A EP 89108801 A EP89108801 A EP 89108801A EP 0347580 B1 EP0347580 B1 EP 0347580B1
Authority
EP
European Patent Office
Prior art keywords
combustion engine
lubricating oil
internal
lubricant
spray nozzles
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
EP89108801A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0347580A2 (de
EP0347580A3 (en
Inventor
Michael Groddeck
Otto Reifenscheid
Gerd-Michael Dr. Wolters
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.)
Rolls Royce Solutions GmbH
Original Assignee
MTU Friedrichshafen GmbH
MTU Motoren und Turbinen Union Friedrichshafen GmbH
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 MTU Friedrichshafen GmbH, MTU Motoren und Turbinen Union Friedrichshafen GmbH filed Critical MTU Friedrichshafen GmbH
Publication of EP0347580A2 publication Critical patent/EP0347580A2/de
Publication of EP0347580A3 publication Critical patent/EP0347580A3/de
Application granted granted Critical
Publication of EP0347580B1 publication Critical patent/EP0347580B1/de
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
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/06—Arrangements for cooling pistons
    • F01P3/08—Cooling of piston exterior only, e.g. by jets
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/16—Controlling lubricant pressure or quantity
    • 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
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • 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
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • 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
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F01M9/102—Lubrication of valve gear or auxiliaries of camshaft bearings
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/34—Lateral camshaft position

Definitions

  • the invention relates to a lubrication system with spray cooling of the pistons of an internal combustion engine , 1984, page 551, emerges as known.
  • Control valves are used for this purpose, which, depending on the lubricant pressure, stop the passage of lubricating oil to the spray nozzles and of which one is assigned to each spray nozzle.
  • Such spray nozzles with assigned control valves are described for example in DE-OS 16 01 435.
  • the disadvantage is that the spray nozzles in connection with the control valves represent expensive and complex components.
  • the invention has for its object to improve the lubrication of the main lubrication points of the internal combustion engine in the starting phase, but to use simple spray nozzles for piston cooling without integrated control valves, and to keep the overall effort for the system for piston cooling small.
  • the supply of lubricating oil to the camshafts and to the spray nozzles can take place via a common lubricating oil channel, which receives a reduced amount of lubricant in the starting phase of the internal combustion engine until a sufficient lubricating oil pressure is built up, or is completely separated from the lubricating oil supply.
  • Piston cooling is not desirable in the start-up phase and does not take place due to a lack of sufficient oil supply.
  • the interruption of the piston cooling in other operating states than in the start phase is not necessary if the lubricant pump has sufficient delivery capacity. Excessive cooling of the pistons cannot take place when the internal combustion engine is idling, even with uninterrupted cooling, if, as is customary in today's engines, the oil temperature is regulated by thermostats.
  • the spray nozzles are no longer arranged in the spatially constricted, poorly accessible central crankcase area above the crankshaft, but in more accessible, less spatially confined side areas of the crankcase in which the camshafts lie.
  • FIGURE shows a fragmentary cross-sectional view in the area of a cylinder of an internal combustion engine with V-shaped cylinders.
  • a central main channel 1 which is arranged in the V between the rows of cylinders of the internal combustion engine, serves to supply the lubrication points on the crankshaft 2 and the connecting rods 3, as well as other lubrication points of the internal combustion engine.
  • the lines branching from the main channel 1 and channels to the lubrication points are not shown in detail.
  • lubricant channels 5 designed as longitudinal bores are used in the camshafts 4.
  • One of the lubricant channels 5 Camshaft 4 lead bores 6 to the lubrication points on the outer surface of the camshaft 4.
  • the lubricating oil After emerging from the lubrication surfaces of the camshaft bearings, the lubricating oil reaches ring grooves 7 which are connected to the spray nozzles 9 for piston cooling via oil supply lines 8.
  • the lubricating oil emerging from the spray nozzles 9 and dripping from the pistons 10 enters a common lubricant sump of the internal combustion engine, from where it is supplied to the lubrication points of the internal combustion engine in a new circuit by a lubricant pump (not shown).
  • the lubricant channels 5, however, are not assigned control valves via which, depending on the lubricant pressure, for example, the lubricant supply to the lubricant channels 5 can be reduced or switched off in the starting phase of the internal combustion engine.
  • the control valves each have a closable main bore and, if necessary, a bypass bore, which allows a reduced lubricant flow.
  • the cross-section of the main bore is much larger than that of the bypass bore. It has been shown that the bearing points on the camshafts 4 and also the lubrication points of the valve control survive a sharp reduction in the lubricating oil supply in the start-up or warm-up phase of the internal combustion engine without damage.
  • the spray nozzles 9 can be designed as simple components without an integrated control valve in each case. It is also advantageous that in the V-engine shown, the spray nozzles 9 are no longer arranged in the central area of the main channel 1, in which area there is very limited space, but are located on the side of the crankcase in the area of the lubricant channels 5, where the accessibility and the spatial conditions are much more favorable.
  • a separate lubricant line which is used solely for supplying cooling oil to the spray nozzles 9, can be dispensed with, and the supply of lubricating oil to the spray nozzles can nevertheless be regulated by a central control valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
EP89108801A 1988-06-24 1989-05-17 Schmiersystem mit Spritzkühlung der Kolben einer Brennkraftmaschine Expired - Lifetime EP0347580B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3821302 1988-06-24
DE3821302A DE3821302C1 (es) 1988-06-24 1988-06-24

Publications (3)

Publication Number Publication Date
EP0347580A2 EP0347580A2 (de) 1989-12-27
EP0347580A3 EP0347580A3 (en) 1990-03-14
EP0347580B1 true EP0347580B1 (de) 1992-06-24

Family

ID=6357140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89108801A Expired - Lifetime EP0347580B1 (de) 1988-06-24 1989-05-17 Schmiersystem mit Spritzkühlung der Kolben einer Brennkraftmaschine

Country Status (4)

Country Link
US (1) US4936417A (es)
EP (1) EP0347580B1 (es)
DE (2) DE3821302C1 (es)
ES (1) ES2033047T3 (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4314183A1 (de) * 1993-04-29 1994-07-07 Audi Ag Vorrichtung zum Schmieren der Nocken einer Nockenwelle
DE4344078A1 (de) * 1993-12-23 1995-06-29 Daimler Benz Ag Vorrichtung zur Zufuhr von Flüssigkeiten in einen Kolben
GB2340578A (en) * 1998-08-13 2000-02-23 Cummins Engine Co Ltd Mounting a nozzle on an engine block to direct cooling oil at the underside of a reciprocating piston
IL157032A (en) * 2003-07-21 2007-10-31 Moshe Elbaz Cutting head for rotary cutting tool
DE102004050235A1 (de) * 2004-10-15 2006-04-20 Daimlerchrysler Ag Brennkraftmaschine
EP2653688B1 (en) * 2012-04-17 2015-06-03 FPT Industrial S.p.A. Method for controlling a piston cooling circuit of an internal combustion engine of an industrial vehicle
CN103470357B (zh) * 2013-06-24 2016-01-20 浙江吉利汽车研究院有限公司杭州分公司 一种发动机活塞冷却喷嘴结构及控制方法
US9605620B2 (en) 2015-04-16 2017-03-28 Ford Global Technologies, Llc Systems and methods for piston cooling
KR102463186B1 (ko) * 2016-12-13 2022-11-03 현대자동차 주식회사 차량용 피스톤 냉각 장치
DE102017001615B3 (de) 2017-02-18 2018-05-09 Mtu Friedrichshafen Gmbh Brennkraftmaschine mit Spritzölkühlung und Verfahren
DE102017120727A1 (de) * 2017-09-08 2019-03-14 Man Truck & Bus Ag Verfahren und Vorrichtung zur Kühlung und/oder Schmierung eines Kolbens und/oder der Laufbahn eines Zylinders einer Hubkolbenbrennkraftmaschine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1996817A (en) * 1934-01-31 1935-04-09 Briggs & Stratton Corp Oiling system for internal combustion engines
DE708798C (de) * 1939-02-18 1941-07-29 Waggon Und Maschb Akt Ges Goer Treibstangenlager mit in der Lagerflaeche angeordneter OElnut
US2678702A (en) * 1950-11-30 1954-05-18 Allis Chalmers Mfg Co Bearing lubrication
US2800119A (en) * 1955-05-05 1957-07-23 Maschf Augsburg Nuernberg Ag Arrangement for cooling the piston of internal combustion engines
US2991770A (en) * 1959-07-15 1961-07-11 Gen Motors Corp Piston cooling means
DE1216014B (de) * 1961-02-09 1966-05-05 Int Harvester Co Umlaufsystem zur Schmierung und Kolbenkuehlung von Brennkraftmaschinen
DE1934378U (de) * 1965-10-28 1966-03-10 Degussa Vorrichtung zur katalytischen reinigung der abgase von brennkraftmaschinen.
DE1601435A1 (de) * 1968-02-14 1970-10-29 Daimler Benz Ag Vorrichtung zur Regelung der Kolbenkuehlung von Brennkraftmaschinen
US4058981A (en) * 1976-06-04 1977-11-22 Caterpillar Tractor Co. Lubricating system and method for turbocharged engines

Also Published As

Publication number Publication date
DE58901738D1 (de) 1992-07-30
EP0347580A2 (de) 1989-12-27
ES2033047T3 (es) 1993-03-01
EP0347580A3 (en) 1990-03-14
US4936417A (en) 1990-06-26
DE3821302C1 (es) 1989-06-01

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