GB1024846A - Improvements in or relating to valve timing devices - Google Patents

Improvements in or relating to valve timing devices

Info

Publication number
GB1024846A
GB1024846A GB1326763A GB1326763A GB1024846A GB 1024846 A GB1024846 A GB 1024846A GB 1326763 A GB1326763 A GB 1326763A GB 1326763 A GB1326763 A GB 1326763A GB 1024846 A GB1024846 A GB 1024846A
Authority
GB
United Kingdom
Prior art keywords
chain
valve
section
wheels
chain wheel
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
Application number
GB1326763A
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.)
FEDERICO FORNELLI
Original Assignee
FEDERICO FORNELLI
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 FEDERICO FORNELLI filed Critical FEDERICO FORNELLI
Publication of GB1024846A publication Critical patent/GB1024846A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F01L1/02—Valve drive
    • F01L1/022—Chain drive
    • 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
    • F01L1/02—Valve drive
    • 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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/348—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear by means acting on timing belts or chains
    • 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
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • F01L2001/0535—Single overhead camshafts [SOHC]
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • F01L2001/0537—Double overhead camshafts [DOHC]
    • 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
    • F02B2275/08—Endless member is a chain
    • 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
    • F02B2275/18—DOHC [Double overhead camshaft]
    • 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
    • F02B2275/20—SOHC [Single overhead camshaft]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0863—Finally actuated members, e.g. constructional details thereof
    • F16H2007/0874—Two or more finally actuated members

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)

Abstract

1,024,846. I.C. engine valve gear. F. FORNELLI. April 3, 1963 [Dec. 27, 1962], No. 13267/63. Heading F1B. In a device for adjusting I.C. engine valve timing gear in dependence on engine speed a first chain wheel 9 acted on by a piston/cylinder device 13 and a second chain wheel supported resiliently on a stem 10 engage opposite sections of the valve gear driving chain 5. Chain wheels 6, 7 driving valve camshafts are driven from the crankshaft by chain wheel 1, chain 2, intermediate chain wheels 3, 4 and chain 5. Cylinder 13 is connected to the engine lubrication system so that with increasing engine speed chain wheel 9 acts to lengthen the section of chain 5 between chain wheels 7 and 4 whilst tie-rod 12 moves chain wheel 8 against spring 14 to allow corresponding shortening of the opposite section of chain 5. In modifications a viscosity-sensitive valve is arranged in the oil circuit, the oil circuit is independent of the main circuit, tie rod 12 is omitted or spring 14 is replaced by a compressed gas cylinder. In another embodiment the device is applied to a single camshaft which acts through tappets and rocker arms on the valve stems. In a further embodiment two cam-shafts are driven by independent chains, a single piston/ cylinder device acts through two separate chain wheels on one section of each chain, whilst independent resiliently mounted chain wheels act on the opposite section of each chain.
GB1326763A 1962-12-27 1963-04-03 Improvements in or relating to valve timing devices Expired GB1024846A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2524962 1962-12-27

Publications (1)

Publication Number Publication Date
GB1024846A true GB1024846A (en) 1966-04-06

Family

ID=11216127

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1326763A Expired GB1024846A (en) 1962-12-27 1963-04-03 Improvements in or relating to valve timing devices

Country Status (1)

Country Link
GB (1) GB1024846A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441009A (en) * 1966-10-20 1969-04-29 Renzo Rafanelli Device for the automatic regulation of the timing of the inlet and exhaust valves of a four-cycle internal combustion engine
FR2500559A1 (en) * 1981-02-20 1982-08-27 Honda Motor Co Ltd DEVICE FOR TENSIONING A TIMING CHAIN OF AN INTERNAL COMBUSTION ENGINE
EP0063038A2 (en) * 1981-04-13 1982-10-20 Ford Motor Company Limited Internal combustion engine and cam drive mechanism therefor
EP0126464A1 (en) * 1983-05-18 1984-11-28 Oskar Dr.-Ing. Schatz Method of supplying combustion air to the combustion chamber of an internal-combustion engine
EP0126465A1 (en) * 1983-05-18 1984-11-28 Oskar Dr.-Ing. Schatz Method of introducing the charging air into the cylinder of an internal-combustion engine, and an engine for carrying out the method
EP0126467A1 (en) * 1983-05-18 1984-11-28 Oskar Dr.-Ing. Schatz Internal-combustion engine with a positive displacement charging pump mechanically driven by the engine crankshaft
DE3421028A1 (en) * 1984-06-06 1985-12-12 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart CAMSHAFT DRIVE OF AN INTERNAL COMBUSTION ENGINE
US4630444A (en) * 1983-05-18 1986-12-23 Oskar Schatz Internal combustion engine with a combination exhaust and direct drive supercharger
US4643156A (en) * 1983-05-18 1987-02-17 Oskar Schatz Internal combustion engine with a positive displacement supercharger mechanically driven from the engine crankshaft
GB2218736A (en) * 1988-05-10 1989-11-22 Borg Warner Automotive Variable relative timing system for shafts connected by an endless member
DE4026013A1 (en) * 1990-08-17 1992-02-20 Kloeckner Humboldt Deutz Ag Adjusting angle between two IC engine shafts - involves placing transmission agent between tension roller and adjustable roller
EP0551592A1 (en) * 1992-01-11 1993-07-21 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Camshaft drive for multi-cylinder internal combustion engine
GB2403996A (en) * 2003-07-17 2005-01-19 David Hostettler Wain Variable camshaft phase system
CN102562209A (en) * 2012-01-06 2012-07-11 燕山大学 Crank shaft and cam shaft transmission ratio switching mechanism of internal combustion engine
CN104564208A (en) * 2013-10-29 2015-04-29 上海汽车集团股份有限公司 Timing chain transmission system and engine
CN105257358A (en) * 2015-10-06 2016-01-20 周家全 Chain transmission system of diesel engine and technological method of chain transmission system
CN111043266A (en) * 2019-12-10 2020-04-21 福建农林大学 Chain starts buffer gear

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441009A (en) * 1966-10-20 1969-04-29 Renzo Rafanelli Device for the automatic regulation of the timing of the inlet and exhaust valves of a four-cycle internal combustion engine
FR2500559A1 (en) * 1981-02-20 1982-08-27 Honda Motor Co Ltd DEVICE FOR TENSIONING A TIMING CHAIN OF AN INTERNAL COMBUSTION ENGINE
EP0063038A2 (en) * 1981-04-13 1982-10-20 Ford Motor Company Limited Internal combustion engine and cam drive mechanism therefor
EP0063038A3 (en) * 1981-04-13 1983-05-04 Ford Motor Company Limited Internal combustion engine and cam drive mechanism therefor
EP0126468B1 (en) * 1983-05-18 1987-04-22 Oskar Dr.-Ing. Schatz Internal-combustion engine with an exhaust-driven supercharger
EP0126465A1 (en) * 1983-05-18 1984-11-28 Oskar Dr.-Ing. Schatz Method of introducing the charging air into the cylinder of an internal-combustion engine, and an engine for carrying out the method
EP0126467A1 (en) * 1983-05-18 1984-11-28 Oskar Dr.-Ing. Schatz Internal-combustion engine with a positive displacement charging pump mechanically driven by the engine crankshaft
US4630444A (en) * 1983-05-18 1986-12-23 Oskar Schatz Internal combustion engine with a combination exhaust and direct drive supercharger
US4643156A (en) * 1983-05-18 1987-02-17 Oskar Schatz Internal combustion engine with a positive displacement supercharger mechanically driven from the engine crankshaft
EP0126464A1 (en) * 1983-05-18 1984-11-28 Oskar Dr.-Ing. Schatz Method of supplying combustion air to the combustion chamber of an internal-combustion engine
US4709683A (en) * 1983-05-18 1987-12-01 Oskar Schatz Internal combustion engine with a positive displacement supercharger mechanically driven from the engine crankshaft
US4817386A (en) * 1983-05-18 1989-04-04 Oskar Schatz Method for the supply of combustion air to the combustion chamber of an internal combustion engine
DE3421028A1 (en) * 1984-06-06 1985-12-12 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart CAMSHAFT DRIVE OF AN INTERNAL COMBUSTION ENGINE
FR2565627A1 (en) * 1984-06-06 1985-12-13 Porsche Ag CAMSHAFT CONTROL OF AN INTERNAL COMBUSTION ENGINE
GB2162243A (en) * 1984-06-06 1986-01-29 Porsche Ag A camshaft drive of an internal-combustion engine
GB2218736A (en) * 1988-05-10 1989-11-22 Borg Warner Automotive Variable relative timing system for shafts connected by an endless member
GB2218736B (en) * 1988-05-10 1992-12-16 Borg Warner Automotive An internal combustion engine with a variable camshaft timing system.
DE4026013A1 (en) * 1990-08-17 1992-02-20 Kloeckner Humboldt Deutz Ag Adjusting angle between two IC engine shafts - involves placing transmission agent between tension roller and adjustable roller
EP0551592A1 (en) * 1992-01-11 1993-07-21 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Camshaft drive for multi-cylinder internal combustion engine
GB2403996A (en) * 2003-07-17 2005-01-19 David Hostettler Wain Variable camshaft phase system
CN102562209A (en) * 2012-01-06 2012-07-11 燕山大学 Crank shaft and cam shaft transmission ratio switching mechanism of internal combustion engine
CN102562209B (en) * 2012-01-06 2013-09-04 燕山大学 Crank shaft and cam shaft transmission ratio switching mechanism of internal combustion engine
CN104564208A (en) * 2013-10-29 2015-04-29 上海汽车集团股份有限公司 Timing chain transmission system and engine
CN105257358A (en) * 2015-10-06 2016-01-20 周家全 Chain transmission system of diesel engine and technological method of chain transmission system
CN111043266A (en) * 2019-12-10 2020-04-21 福建农林大学 Chain starts buffer gear
CN111043266B (en) * 2019-12-10 2022-05-24 福建农林大学 Chain starts buffer gear

Similar Documents

Publication Publication Date Title
GB1024846A (en) Improvements in or relating to valve timing devices
GB1093861A (en) Internal combustion engine valve gear
GB1330782A (en) Devices for operating the valves of internal combustion engines
GB967697A (en) Internal combustion engine valve gear
ES356237A1 (en) Camshaft valve gear for engine cylinder head
GB1196865A (en) A Rocker Arm for Driving Poppet Valves of Internal Combustion Engines and a method for manufacturing the same
GB1454910A (en) Pre-combustion chamber internal combustion engines
GB689048A (en) Arrangement for steering axles of rail vehicles
US2976862A (en) Engine valve actuating mechanism
GB866872A (en) Improvements relating to overhead valve mechanism for internal combustion engines
GB909707A (en) Improvements in or relating to hydraulic devices for taking up axial play in valve gears, notably of internal combustion engines
JPS5677519A (en) Cylinder head for overhead camshaft type four-cycle engine
US3563214A (en) Internal combustion engine with reciprocatory piston and camshaft above the cylinder
GB1527743A (en) Internal combustion engine having adjustable valve gear
GB955988A (en) Improvements in or relating to valve tappets of internal combustion engines
US2929368A (en) Overhead valve internal combustion engines
US2546263A (en) Valve-operating mechanism
GB558839A (en) Improvements in operating gear for overhead valves of internal combustion engines
GB511853A (en) Control of valve mechanism of internal-combustion engines
SU417640A1 (en) DEVICE FOR THE DRIVE OF VALVES
GB374834A (en) Improvements in or relating to explosion motors
GB1029348A (en) Improvements in or relating to internal combustion engines
GB336841A (en) Improvements in or relating to valve gears for internal combustion engines
US1624277A (en) Internal-combustion engine
GB1082178A (en) Hydraulic self-adjusting valve tappet for piston engines