JPS57159904A - Device for tightening transmission belt for driving valve-moving cam shaft of dohc-type internal combustion engine - Google Patents

Device for tightening transmission belt for driving valve-moving cam shaft of dohc-type internal combustion engine

Info

Publication number
JPS57159904A
JPS57159904A JP4479681A JP4479681A JPS57159904A JP S57159904 A JPS57159904 A JP S57159904A JP 4479681 A JP4479681 A JP 4479681A JP 4479681 A JP4479681 A JP 4479681A JP S57159904 A JPS57159904 A JP S57159904A
Authority
JP
Japan
Prior art keywords
transmission belt
moving cam
dohc
internal combustion
combustion engine
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.)
Granted
Application number
JP4479681A
Other languages
Japanese (ja)
Other versions
JPS6358245B2 (en
Inventor
Masaharu Tsuboi
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP4479681A priority Critical patent/JPS57159904A/en
Priority to FR8202580A priority patent/FR2500559B1/en
Priority to US06/350,068 priority patent/US4480603A/en
Priority to DE19823206020 priority patent/DE3206020A1/en
Priority to CA000396654A priority patent/CA1179167A/en
Publication of JPS57159904A publication Critical patent/JPS57159904A/en
Publication of JPS6358245B2 publication Critical patent/JPS6358245B2/ja
Granted 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
    • F01L1/02—Valve drive
    • F01L1/024—Belt 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
    • 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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

PURPOSE:To prevent the size of a tightening device from becoming large due to its protrusion from a transmission belt and always apply effective tension to the belt, by installing a part of the tightening device in a dead space inside the transmission belt. CONSTITUTION:In a DOHC-type internal combustion engine, two engine blocks B1, B2 are palced as V and a pair of intake and exhaust valve moving cam shafts 5, 6 are rotatably supported on the cylinder heads 3 of the engine blocks to open and close an intake and an exhaust valves 7, 8. The valve moving cam shafts 5, 6 are rotated by the torque of the crankshaft 1 through transmission chains 15 and so forth. The body 16 of a tightening member is located in contact with the outside surface of the loose part of the transmission chain 15. The static end 17 of the body 16 of the tightening member is pivotally coupled at 19 to an appropriate part of the engine block B1 or B2. The moving end of the body 16 is pivotally coupled at 20 to one end of a rocking arm 21 supported at the other end 31 on a support frame 26 provided in the space S between the cam shafts 5, 6. The rocking arm 21 is energized downward by spring 37.
JP4479681A 1981-02-20 1981-03-27 Device for tightening transmission belt for driving valve-moving cam shaft of dohc-type internal combustion engine Granted JPS57159904A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP4479681A JPS57159904A (en) 1981-03-27 1981-03-27 Device for tightening transmission belt for driving valve-moving cam shaft of dohc-type internal combustion engine
FR8202580A FR2500559B1 (en) 1981-02-20 1982-02-17 DEVICE FOR TENSIONING A TIMING CHAIN OF AN INTERNAL COMBUSTION ENGINE
US06/350,068 US4480603A (en) 1981-02-20 1982-02-18 Chain tightening mechanism for DOHC engine
DE19823206020 DE3206020A1 (en) 1981-02-20 1982-02-19 COMBUSTION ENGINE
CA000396654A CA1179167A (en) 1981-02-20 1982-02-19 Tensioning mechanism for transmission belt for driving valve actuating cam shaft of internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4479681A JPS57159904A (en) 1981-03-27 1981-03-27 Device for tightening transmission belt for driving valve-moving cam shaft of dohc-type internal combustion engine

Publications (2)

Publication Number Publication Date
JPS57159904A true JPS57159904A (en) 1982-10-02
JPS6358245B2 JPS6358245B2 (en) 1988-11-15

Family

ID=12701378

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4479681A Granted JPS57159904A (en) 1981-02-20 1981-03-27 Device for tightening transmission belt for driving valve-moving cam shaft of dohc-type internal combustion engine

Country Status (1)

Country Link
JP (1) JPS57159904A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4726331A (en) * 1986-05-06 1988-02-23 Yamaha Hatsudoki Kabushiki Kaisha Means for variable valve timing for engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4726331A (en) * 1986-05-06 1988-02-23 Yamaha Hatsudoki Kabushiki Kaisha Means for variable valve timing for engine

Also Published As

Publication number Publication date
JPS6358245B2 (en) 1988-11-15

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