US3456759A - Devices for draining off oil from the valve cover and cooling the cylinder head of an internal combustion engine - Google Patents

Devices for draining off oil from the valve cover and cooling the cylinder head of an internal combustion engine Download PDF

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Publication number
US3456759A
US3456759A US538042A US3456759DA US3456759A US 3456759 A US3456759 A US 3456759A US 538042 A US538042 A US 538042A US 3456759D A US3456759D A US 3456759DA US 3456759 A US3456759 A US 3456759A
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US
United States
Prior art keywords
oil
cylinder head
valve
chamber
draining
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
US538042A
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English (en)
Inventor
Edmond Henry-Biabaud
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.)
Automobiles Citroen SA
Original Assignee
Andre Citroen SA
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Filing date
Publication date
Application filed by Andre Citroen SA filed Critical Andre Citroen SA
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Publication of US3456759A publication Critical patent/US3456759A/en
Anticipated expiration legal-status Critical
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    • 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
    • F02F1/28—Cylinder heads having cooling means for air cooling
    • F02F1/30—Finned cylinder heads
    • F02F1/34—Finned cylinder heads with means for directing or distributing cooling medium 
    • 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
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • 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
    • F02B75/24—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type
    • F02B75/243—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type with only one crankshaft of the "boxer" type, e.g. all connecting rods attached to separate crankshaft 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • 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

  • this oil and air return from said first breather pipe chamber takes place through a plurality of relatively narrow ducts connecting the bottom of said first chamber of said breather pipe to the valve covers for draining off the oil from said valve covers and cool the hot portions of the cylinder head, which are specially designed for this purpose, by circulating an oil mist.
  • This system does not require the use of any special movable component element and is remarkable by its great constructional simplicity.
  • FIGURE 1 illustrates an engine equipped with a breather pipe of known type
  • FIGURE 2 illustrates the adaptation of the system of this invention to the engine of FIGURE 1 with a view to facilitate the draining off of the oil contained in the valve cover and the cooling of the cylinder head by means of an oil mist;
  • FIGURE 3 illustrates diagrammatically the cylinder head of a conventional air-cooled flat-twin engine
  • FIGURE 4 illustrates in the same manner a cylinder head constructed according to this invention and adapted to be cooled by means of an oil mist.
  • a relatively large tube 6 interconnects a chamber 7 with the crankcase 4 through a cylindrical rubber valve '8 permit-ting the gaseous flow from the crankcase to the chamber while preventing the reverse flow.
  • a second chamber 9 communicates with the first chamber 7 through the medium of a flat disc valve 10. This second chamber 9 communicates with the atmosphere, or, as shown, with the intake of carburettor 5.
  • a pipe 11 of relatively small diameter which connects the first chamber 7 with the crankcase 4 and opens under the oil level in the sump directs into this crankcase the oil entrained in the tube 6 together with
  • an alternating pressure having a mean value inferior to the atmospheric pressure prevails in crankcase 4, any excess pressure being relieved by opening the cylindrical valve 8.
  • This invention is applicable to a combustion engine equipped in the known manner as described hereinabove with reference to FIGURE 3.
  • the relatively narrow pipe 11 of the known construction illustrated in FIGURE 1 is replaced by the two narrow pipes 11a of FIGURE 2 leading the oil and air from chamber 7 into the valve covers 12 wherefrom the oil is directed without delay to the bottom or sump of crankcase 4.
  • This oil is drained oif through the tubes 13 enclosing the valve push-rods and through the holes 21 of valve tappets 22, with the complementary effect of improving the lubrication of the bearing faces of these tappets.
  • FIGURE 3 shows the cylinder head 14 of one of the engine cylinders, with the induction port 15 and the exhaust port 16, adapted to be cooled by means of an air flow circulating externally between the fins provided in portion 20.
  • the cylinder head portion extending between the inlet valve 18 and the exhaust valve 19 is strongly heated due to the heat developing inside the cylinder head 14 and exhaust port 16. Moreover, dissipating this heat constitutes a ditficult problem owing to the relatively reduced cross-sectional area of the air passage 20 and to the relatively moderate surface area of the fins formed on the cylinder head.
  • the cylinder-head cooling is improved by replacing the conventional circulation of external air by an internal circulation of oil mist or vapour delivered through the pipes 11a of FIGURE 2.
  • the upper portion of cylinder head 14 which registers with the valve cover may be plain or provided either with fins 17 as shown in FIGURE 4, or with unevennesses of any desired and suitable configura tion in order to facilitate the heat transfer to the oil vapour or mist.
  • An internal combustion engine comprising a crankshaft, a crankcase enclosing said crankshaft, cylinders opening into said crankcase on either side of said crankshaft, pistons slidably mounted in said cylinders and adapted to be reciprocated therein by being operatively connected to said crankshaft, cylinder heads closing said cylinders at their ends opposite to said crankshaft, at least two valves per cylinder, mounted on each cylinder head and having their shanks projecting from the external face of the relevant cylinder head, rockers mounted on said external face of each cylinder head for imparting a reciprocating motion to said valves, a valve cover secured to the external face of each cylinder head, rectilinear ducts connecting said valve cover to said crankcase through said cylinder head, rocker push-rods mounted with clearance in said ducts, each push-rod having one end projecting into said valve cover for oscillating said rockers and an opposite end projecting into said crankcase, a camshaft rotatably mounted in said crankcase and rotat

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  • 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)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
US538042A 1965-04-07 1966-03-28 Devices for draining off oil from the valve cover and cooling the cylinder head of an internal combustion engine Expired - Lifetime US3456759A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR12259A FR1448805A (fr) 1965-04-07 1965-04-07 Système d'évacuation de l'huile du couvre-culasse et de refroidissement de la culasse d'un moteur à combustion interne

Publications (1)

Publication Number Publication Date
US3456759A true US3456759A (en) 1969-07-22

Family

ID=8575828

Family Applications (1)

Application Number Title Priority Date Filing Date
US538042A Expired - Lifetime US3456759A (en) 1965-04-07 1966-03-28 Devices for draining off oil from the valve cover and cooling the cylinder head of an internal combustion engine

Country Status (9)

Country Link
US (1) US3456759A (xx)
BE (1) BE677906A (xx)
DE (1) DE1526608A1 (xx)
ES (1) ES324937A1 (xx)
FR (1) FR1448805A (xx)
GB (1) GB1072966A (xx)
LU (1) LU50659A1 (xx)
NL (1) NL6604525A (xx)
SE (1) SE312033B (xx)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3554171A (en) * 1967-04-22 1971-01-12 Daimler Benz Ag Cylinder head of an air-cooled internal combustion engine
US3785457A (en) * 1970-10-08 1974-01-15 Daimler Benz Ag Internal combustion engine
US4470389A (en) * 1982-02-08 1984-09-11 Kawasaki Jukogyo Kabushiki Kaisha Breather-lubricator system for engines
US4557226A (en) * 1983-11-14 1985-12-10 Bbc Brown, Boveri & Company, Limited Device for returning the blow-by rate from the crankcase into the system of a supercharged internal combustion engine
US4593661A (en) * 1985-09-26 1986-06-10 Brander S L Heat sink for an internal combustion engine
US4601267A (en) * 1985-07-26 1986-07-22 Tecumseh Products Company Valve mechanism lubrication system for an overhead valve engine
US4662322A (en) * 1984-11-26 1987-05-05 Kawasaki Jukogyo Kabushiki Kaisha Overhead-valve engine
US4708095A (en) * 1986-06-16 1987-11-24 Deere & Company Combined engine cooling and lube system
US5647337A (en) * 1996-02-21 1997-07-15 Kohler Co. Engine breather device with cooling baffle
US20100043740A1 (en) * 2008-08-19 2010-02-25 Kool Kover, LLC Valve cover housing for internal combustion engines
US20130092108A1 (en) * 2011-10-17 2013-04-18 Ford Global Technologies, Llc Method for Warming an Internal Combustion Engine, and Internal Combustion Engine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01103713U (xx) * 1987-12-28 1989-07-13

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1354663A (en) * 1919-07-21 1920-10-05 Kirkman Lubricating system
US1408179A (en) * 1919-02-25 1922-02-28 Pont Eleuthere Paul Du Internal-combustion engine
US1429014A (en) * 1921-01-19 1922-09-12 George O Blanchard Head cover for internal-combustion engines
US1529240A (en) * 1922-03-11 1925-03-10 Ralph C Chesnutt Valve
US1876160A (en) * 1931-11-16 1932-09-06 Victor F Zahodiakin Internal combustion engine valve
US2111242A (en) * 1936-05-16 1938-03-15 Harley Davidson Motor Co Inc Lubricating system for internal combustion engines
US2381339A (en) * 1942-10-14 1945-08-07 Aircooled Motors Corp Valve lubricating system for internal-combustion engines
US2902022A (en) * 1956-06-18 1959-09-01 Continental Motors Corp Engine lubrication and ventilation system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1408179A (en) * 1919-02-25 1922-02-28 Pont Eleuthere Paul Du Internal-combustion engine
US1354663A (en) * 1919-07-21 1920-10-05 Kirkman Lubricating system
US1429014A (en) * 1921-01-19 1922-09-12 George O Blanchard Head cover for internal-combustion engines
US1529240A (en) * 1922-03-11 1925-03-10 Ralph C Chesnutt Valve
US1876160A (en) * 1931-11-16 1932-09-06 Victor F Zahodiakin Internal combustion engine valve
US2111242A (en) * 1936-05-16 1938-03-15 Harley Davidson Motor Co Inc Lubricating system for internal combustion engines
US2381339A (en) * 1942-10-14 1945-08-07 Aircooled Motors Corp Valve lubricating system for internal-combustion engines
US2902022A (en) * 1956-06-18 1959-09-01 Continental Motors Corp Engine lubrication and ventilation system

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3554171A (en) * 1967-04-22 1971-01-12 Daimler Benz Ag Cylinder head of an air-cooled internal combustion engine
US3785457A (en) * 1970-10-08 1974-01-15 Daimler Benz Ag Internal combustion engine
US4470389A (en) * 1982-02-08 1984-09-11 Kawasaki Jukogyo Kabushiki Kaisha Breather-lubricator system for engines
US4557226A (en) * 1983-11-14 1985-12-10 Bbc Brown, Boveri & Company, Limited Device for returning the blow-by rate from the crankcase into the system of a supercharged internal combustion engine
US4662322A (en) * 1984-11-26 1987-05-05 Kawasaki Jukogyo Kabushiki Kaisha Overhead-valve engine
EP0211156A3 (en) * 1985-07-26 1988-01-13 Tecumseh Products Company Valve mechanism lubrication system for an overhead valve engine
US4601267A (en) * 1985-07-26 1986-07-22 Tecumseh Products Company Valve mechanism lubrication system for an overhead valve engine
EP0211156A2 (en) * 1985-07-26 1987-02-25 Tecumseh Products Company Valve mechanism lubrication system for an overhead valve engine
US4593661A (en) * 1985-09-26 1986-06-10 Brander S L Heat sink for an internal combustion engine
US4708095A (en) * 1986-06-16 1987-11-24 Deere & Company Combined engine cooling and lube system
US5647337A (en) * 1996-02-21 1997-07-15 Kohler Co. Engine breather device with cooling baffle
US20100043740A1 (en) * 2008-08-19 2010-02-25 Kool Kover, LLC Valve cover housing for internal combustion engines
US8100100B2 (en) 2008-08-19 2012-01-24 Turner Jr Price George Valve cover housing for internal combustion engines
US20130092108A1 (en) * 2011-10-17 2013-04-18 Ford Global Technologies, Llc Method for Warming an Internal Combustion Engine, and Internal Combustion Engine
US9004020B2 (en) * 2011-10-17 2015-04-14 Ford Global Technologies, Llc Method for warming an internal combustion engine, and internal combustion engine
US20150167531A1 (en) * 2011-10-17 2015-06-18 Ford Global Technologies, Llc Method for warming an internal combustion engine, and internal combustion engine
US9976471B2 (en) * 2011-10-17 2018-05-22 Ford Global Technologies, Llc Method for warming an internal combustion engine, and internal combustion engine

Also Published As

Publication number Publication date
ES324937A1 (es) 1967-02-16
NL6604525A (xx) 1966-10-10
GB1072966A (en) 1967-06-21
LU50659A1 (xx) 1966-05-16
DE1526608A1 (de) 1970-07-30
BE677906A (xx) 1966-09-01
SE312033B (xx) 1969-06-30
FR1448805A (fr) 1966-08-12

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