US3821942A - Driving apparatus for valves of internal combustion engines - Google Patents

Driving apparatus for valves of internal combustion engines Download PDF

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Publication number
US3821942A
US3821942A US00293426A US29342672A US3821942A US 3821942 A US3821942 A US 3821942A US 00293426 A US00293426 A US 00293426A US 29342672 A US29342672 A US 29342672A US 3821942 A US3821942 A US 3821942A
Authority
US
United States
Prior art keywords
cover
operating mechanism
valve
suction
rocking
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
US00293426A
Other languages
English (en)
Inventor
N Ishida
A Watanabe
Y Ishii
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.)
Japan Ships Machinery Dev Association
Original Assignee
Japan Ships Machinery Dev Association
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
Priority claimed from JP8956971U external-priority patent/JPS517364Y2/ja
Priority claimed from JP1971089570U external-priority patent/JPS5122165Y2/ja
Application filed by Japan Ships Machinery Dev Association filed Critical Japan Ships Machinery Dev Association
Application granted granted Critical
Publication of US3821942A publication Critical patent/US3821942A/en
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
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/34—Lateral camshaft position
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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
    • 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 valve operating mechanism comprises a plurality of rocking arms pivotally supported by the cover, rod means interposed between one end of the rocking arms and the valve stems of the suction and exhaust valves for opening and closing the same and means for permitting lateral movement to the rod means with respect to the valve stems in accordance with the rocking motion of the rocking arms.
  • the cover is supported by a cylindrical support disposed within a circle on which a plurality of bolts adapted to secure the cylinder head to a cylinder block are arranged, and the cover is removably secured to the cylinder head.
  • a cylinder cover for protecting the valves and their operating mechanism is bolted to the cylinder head. Accordingly, where it is necessary to dismount a piston or the like component parts it is necessary to remove the cover and the valve operating mechanism before removing a plurality of bolts which are used to clamp a cylinder head to a cylinder block. Such removal of numerous component parts for performing dismounting and repair of a limited number of the component parts requires a large amount of labour and time. This is especially true where the size of the engine is large and where the space available for this service is limited as in a ship.
  • Another object of this invention is to provide an improved internal combustion engine which can be readily disassembled with minimum labour.
  • a further object of this invention is to provide an improved internal combustion engine wherein the cylinder cover can be readily dismounted from the engine block.
  • FIG. 1 shows a longitudinal sectional view of the upper portion of an internal combustion engine embodying the invention and FIG. 2 is a plan view of the engine shown in FIG. 1
  • the internal combustion engine 30 comprises a cylinder block 31 containing a piston 32, a cylinder head 1 and a valve operating mechanism 2'.
  • the cylinder head 1 is provided with a suction opening 3 and an exhaust opening 4 which are controlled by a suction valve 5 and an exhaust valve 6 respectively.
  • the valve stems 5a and 6a of these valves are guided by valve guides 7 and 8 of cast iron which are secured to the cylinder head 1.
  • a fuel injection nozzle 33 is also mounted on the cylinder head 1.
  • valve stems 5a and 5b Near the upper ends of the valve stems 5a and 5b are secured spring seats 9 and 10, and springs l I and 12 are interposed between the spring seats 9 and 10 and the flanges at the lower ends of the valve guides 7 and 8 to normally urge the suction and exhaust valves 5 and 6 toward the closed positions.
  • Rods 13 and 14 are supported by holders 15 and 16, respectively, above valve stems 5a and 6a to be operated in unison therewith.
  • the holders 15 and 16 are supported by a cover 34.
  • Rocking arms 19 and 20 are pivotally mounted on pivot shaft 17 and 18 respectively which are supported by the cover 34. At one ends of the rocking arms 19 and 20 are secured thrust screws2l and 22 with their spherical lower ends received in the sockets formed on the upper surfaces of intermediate members 26 and 27.
  • the thrust screws 21 and 22 are provided with screw threads and are secured to the rocking arms 19 and 20 by means of nuts 23 and 24 so as to adjust the valve openings.
  • the other ends of the rocking arms 19 and 20 are moved in the vertical direction by means of cams, not shown, through operating rods 25.
  • rocking arm 20 is rotated in the counterclockwise direction to open the exhaust valve -6 through thrust screw 22 and rod 14.
  • the horizontal displacement of the push rod 22 is absorbed by the horizontal sliding movement of the intermediate member 27 relative to the upper end of rod 14.
  • the diameter of the intermediate member 27 may be made smaller than that of the rod 14.
  • the rotary movement of the rocking arms is transmitted to the suction and exhaust valves through rods that can move relatively in the horizontal direction so that the horizontal component of the rotary movement of the rocking arms is not transmitted to the suction and exhaust valves, thus preventing undesirable wear of the stems thereof.
  • the rods 13 and 14 wear out it is possible to readily exchange them without disassembling the cylinder head or the valve operating mechanism.
  • a cylindrical support 43 is mounted on the cylinder head 1 within a circle on which the bolts 40 for securing the cylinder head 1 to the cylinder block 31 are disposed.
  • a cylindrical cover 34 having a projection 45 for supporting the rocking arms 19 and 20 is mounted on the support 43.
  • the cover 34 is secured to the cylinder head 1 by means of a plurality of bolts 46.
  • the cover 34 is provided with a removable lid 47.
  • valve operating mechanism mounted on a cylinder head which is bolted to a cylinder block and the valve operating mechanism is housed in a cover
  • said valve operating mechanism comprises a plurality of rocking arms pivotally mounted to said cover with thrust screws at one end of said rocking arms, means for rocking said rocking arms, and rod means interposed between said thrust screws and said valve stems of said suction and exhaust valves for transmitting axial motion for opening and closing said valves
  • each rod means comprises an intermediate member connected to the end of said thrust screw, a rod interposed between said intermediate member and said valve stem and stationary means for guiding the vertical movement of said rod, said stationary meanshbeing supported by said cover.
  • valve operating mechanism mounted on a cylinder head which is bolted to a cylinder block and the valve operating mechanism is housed in a cover
  • said improvement which comprises a cylindrical support disposed within a circle on which a plurality of bolts adapted to secure said cylinder head to a cylinder block are arranged, said support supporting said cover, and means for removably securing said cover to said cylinder head
  • said valve operating mechanism comprising a plurality of rocking armspivotally supported by said cover, means for rocking said rocking arms, rod means interposed between one end of each of said rocking arms and the valve stems of said suction and exhaust valves guided for transmitting axial motion for opening and closing said valves, said last named means comprising a laterally movable rod portion intermediate said one end and said valve stem.
  • valve operating mechanism mounted on a cylinder head which is bolted to a cylinder block and the valve operating mechanism is housed in a cover
  • said valve operating mechanism comprises a plurality of pivotally mounted rocking arms, means for rocking said rocking arms and, rod means interposed between one end of said rocking arms and the valve stems of said suction and exhaust valves for opening and closing said valves
  • each rod means comprises a push member adjustably mounted on one end of said rocking arm, an intermediate member connected to thev lower end of said push member through a ball and socket joint, a rod interposed between the valve stem of each of said suction and exhaust valves and said intermediate member, and stationary means supported by said cover for guiding the vertical movement of said rod.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Valve Device For Special Equipments (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
US00293426A 1971-09-30 1972-09-29 Driving apparatus for valves of internal combustion engines Expired - Lifetime US3821942A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8956971U JPS517364Y2 (da) 1971-09-30 1971-09-30
JP1971089570U JPS5122165Y2 (da) 1971-09-30 1971-09-30

Publications (1)

Publication Number Publication Date
US3821942A true US3821942A (en) 1974-07-02

Family

ID=26430991

Family Applications (1)

Application Number Title Priority Date Filing Date
US00293426A Expired - Lifetime US3821942A (en) 1971-09-30 1972-09-29 Driving apparatus for valves of internal combustion engines

Country Status (9)

Country Link
US (1) US3821942A (da)
CH (1) CH549728A (da)
DE (1) DE2248063C3 (da)
DK (1) DK136666C (da)
FR (1) FR2155456A5 (da)
GB (1) GB1368902A (da)
IT (1) IT968476B (da)
NO (1) NO137654C (da)
SE (1) SE391774B (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4327678A (en) * 1979-01-31 1982-05-04 Societe D'etudes De Machines Thermiques S.E.M.T. Support device for the set of valve rockers of an internal combustion engine, particularly a large-size engine
US4388898A (en) * 1981-05-29 1983-06-21 Ronald Luttrell Oil containment device
US5596958A (en) * 1995-08-11 1997-01-28 Miller; James Rocker arm bridge for internal combustion engines

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU545712B2 (en) * 1982-07-23 1985-07-25 Honda Giken Kogyo Kabushiki Kaisha I.c. engine valve actuating apparatus
DE3637199A1 (de) * 1986-10-31 1988-05-05 Kloeckner Humboldt Deutz Ag Kipphebelbock fuer wassergekuehlte brennkraftmaschinen mit 3 oder 4 ventilen
DE102016112447A1 (de) * 2016-07-07 2018-01-11 Man Diesel & Turbo Se Ventiltrieb für eine Brennkraftmaschine und Brennkraftmaschine
DE102016112455A1 (de) * 2016-07-07 2018-01-11 Man Diesel & Turbo Se Ventiltrieb für eine Brennkraftmaschine und Brennkraftmaschine

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1534773A (en) * 1921-03-03 1925-04-21 Gen Motors Res Corp Valve mechanism for internal-combustion engines
US1741677A (en) * 1927-02-24 1929-12-31 Harold F Pitcairn Valve-adjusting means for internal-combustion engines
US2521176A (en) * 1947-09-16 1950-09-05 Worthington Pump & Mach Corp Valve gear for operating poppet valves of internal-combustion engines
US2608965A (en) * 1948-10-12 1952-09-02 Pielstick Gustav Combustion engine cylinder head casing
US3099983A (en) * 1960-03-24 1963-08-06 Alfa Romeo Spa Air-cooled internal combustion engine
US3273546A (en) * 1964-01-24 1966-09-20 Gen Metals Corp Valve timing selector
US3299871A (en) * 1965-04-03 1967-01-24 Bayerische Motoren Werke Ag Valve control for internal combustion engines
US3589346A (en) * 1969-05-06 1971-06-29 Robert C Warren Overhead valve action and air pollutant device
US3712278A (en) * 1970-11-27 1973-01-23 Semt Rocker-arm assembly for internal combustion engines
US3722484A (en) * 1970-01-15 1973-03-27 Gordini Automobiles Sa Devices for controlling the valves of internal combustion engines

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1534773A (en) * 1921-03-03 1925-04-21 Gen Motors Res Corp Valve mechanism for internal-combustion engines
US1741677A (en) * 1927-02-24 1929-12-31 Harold F Pitcairn Valve-adjusting means for internal-combustion engines
US2521176A (en) * 1947-09-16 1950-09-05 Worthington Pump & Mach Corp Valve gear for operating poppet valves of internal-combustion engines
US2608965A (en) * 1948-10-12 1952-09-02 Pielstick Gustav Combustion engine cylinder head casing
US3099983A (en) * 1960-03-24 1963-08-06 Alfa Romeo Spa Air-cooled internal combustion engine
US3273546A (en) * 1964-01-24 1966-09-20 Gen Metals Corp Valve timing selector
US3299871A (en) * 1965-04-03 1967-01-24 Bayerische Motoren Werke Ag Valve control for internal combustion engines
US3589346A (en) * 1969-05-06 1971-06-29 Robert C Warren Overhead valve action and air pollutant device
US3722484A (en) * 1970-01-15 1973-03-27 Gordini Automobiles Sa Devices for controlling the valves of internal combustion engines
US3712278A (en) * 1970-11-27 1973-01-23 Semt Rocker-arm assembly for internal combustion engines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4327678A (en) * 1979-01-31 1982-05-04 Societe D'etudes De Machines Thermiques S.E.M.T. Support device for the set of valve rockers of an internal combustion engine, particularly a large-size engine
US4388898A (en) * 1981-05-29 1983-06-21 Ronald Luttrell Oil containment device
US5596958A (en) * 1995-08-11 1997-01-28 Miller; James Rocker arm bridge for internal combustion engines
US6041750A (en) * 1995-08-11 2000-03-28 Miller; James Rocker arm bridge for internal combustion engines

Also Published As

Publication number Publication date
SE7212644L (da) 1973-04-02
GB1368902A (en) 1974-10-02
IT968476B (it) 1974-03-20
FR2155456A5 (da) 1973-05-18
DE2248063B2 (de) 1974-10-31
DK136666B (da) 1977-11-07
NO137654B (no) 1977-12-19
SE391774B (sv) 1977-02-28
DE2248063A1 (de) 1973-04-05
NO137654C (no) 1978-03-29
DE2248063C3 (de) 1975-06-12
DK136666C (da) 1978-04-10
CH549728A (de) 1974-05-31

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