GB629629A - Improvements in cams for operating valves of internal combustion engines - Google Patents

Improvements in cams for operating valves of internal combustion engines

Info

Publication number
GB629629A
GB629629A GB527047A GB527047A GB629629A GB 629629 A GB629629 A GB 629629A GB 527047 A GB527047 A GB 527047A GB 527047 A GB527047 A GB 527047A GB 629629 A GB629629 A GB 629629A
Authority
GB
United Kingdom
Prior art keywords
parts
sine wave
curve
valve
cams
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
GB527047A
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.)
Austin Motor Co Ltd
Original Assignee
Austin 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 Austin Motor Co Ltd filed Critical Austin Motor Co Ltd
Priority to GB527047A priority Critical patent/GB629629A/en
Publication of GB629629A publication Critical patent/GB629629A/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
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08—Shape of cams

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

629,629. Valve-gear.. AUSTIN MOTOR CO., Ltd., and BISHOP, J. L. H. Feb. 24, 1947, No. 5270. [Class 7 (vi)] A valve-operating cam is designed so that the parts DE, EG, GH, Fig. 1, give an accelerating curve, Fig. 2, consisting of three half-period' sine waves DdE, EfG and GgH. The lift curve developed from the above acceleration curve, consists of portions corresponding to the parts DE and GH represented by an equation of the form y = -R sin mx. + nx i.e.. a negative sine wave combined with an ascending straight line and a portion corresponding to EG which is a halfperiod sine wave. Constant velocity ramps CD, and HJ may be provided at the ends of the operative part of the cam to take up the clearance. To allow for compression in the push rods during the acceleration periods DE and GH, and expansion of the rods in the parts EG, the amplitudes of the negative sine waves in the parts DE and GH and the positive sine wave in the part EG may be reduced. Specification 573,294 is referred to.
GB527047A 1947-02-24 1947-02-24 Improvements in cams for operating valves of internal combustion engines Expired GB629629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB527047A GB629629A (en) 1947-02-24 1947-02-24 Improvements in cams for operating valves of internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB527047A GB629629A (en) 1947-02-24 1947-02-24 Improvements in cams for operating valves of internal combustion engines

Publications (1)

Publication Number Publication Date
GB629629A true GB629629A (en) 1949-09-23

Family

ID=9792928

Family Applications (1)

Application Number Title Priority Date Filing Date
GB527047A Expired GB629629A (en) 1947-02-24 1947-02-24 Improvements in cams for operating valves of internal combustion engines

Country Status (1)

Country Link
GB (1) GB629629A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0028859A1 (en) * 1979-11-09 1981-05-20 Grabowsky, Harald Valve-control mechanism and machines including such a mechanism
EP1666701A1 (en) * 2003-08-25 2006-06-07 Yamaha Hatsudoki Kabushiki Kaisha Valve gear of internal combustion engine
CN108223035A (en) * 2017-12-30 2018-06-29 潍柴动力股份有限公司 A kind of design of cam contour line method
CN110374706A (en) * 2019-07-22 2019-10-25 湖州圣龙汽车动力系统有限公司 Engine symmetrical expression Valve-train Cam
CN113279833A (en) * 2021-07-09 2021-08-20 宁波大学 Two-order continuous local adjustable symmetrical distribution cam profile combination design method
CN113704909A (en) * 2021-08-19 2021-11-26 第一拖拉机股份有限公司 Method for designing motion law of cam follower and cam obtained by method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0028859A1 (en) * 1979-11-09 1981-05-20 Grabowsky, Harald Valve-control mechanism and machines including such a mechanism
EP1666701A1 (en) * 2003-08-25 2006-06-07 Yamaha Hatsudoki Kabushiki Kaisha Valve gear of internal combustion engine
EP1666701A4 (en) * 2003-08-25 2010-04-07 Yamaha Motor Co Ltd Valve gear of internal combustion engine
CN108223035A (en) * 2017-12-30 2018-06-29 潍柴动力股份有限公司 A kind of design of cam contour line method
CN108223035B (en) * 2017-12-30 2020-09-29 潍柴动力股份有限公司 Cam profile design method
CN110374706A (en) * 2019-07-22 2019-10-25 湖州圣龙汽车动力系统有限公司 Engine symmetrical expression Valve-train Cam
CN110374706B (en) * 2019-07-22 2024-02-20 宁波圣龙五湖汽车零部件有限公司 Symmetrical distribution cam molded line of engine
CN113279833A (en) * 2021-07-09 2021-08-20 宁波大学 Two-order continuous local adjustable symmetrical distribution cam profile combination design method
CN113279833B (en) * 2021-07-09 2024-05-03 宁波大学 Second-order continuous local adjustable symmetrical distribution cam profile combination design method
CN113704909A (en) * 2021-08-19 2021-11-26 第一拖拉机股份有限公司 Method for designing motion law of cam follower and cam obtained by method
CN113704909B (en) * 2021-08-19 2023-11-21 第一拖拉机股份有限公司 Design method of cam follower motion law and cam obtained by design method

Similar Documents

Publication Publication Date Title
JPS5316113A (en) Driving valve equipment of internal combustion engine
GB629629A (en) Improvements in cams for operating valves of internal combustion engines
DK135468B (en) Charged internal combustion engine with wires for lubrication of at least one valve stem.
JPS5227903A (en) Internal combustion engine
JPS5335827A (en) Ignition timing control system for internal combustion engine
IT1110642B (en) PROCEDURE FOR IMPROVING THE EXTERNAL COOLING OF AN EXHAUST VALVE OF AN INTERNAL COMBUSTION ENGINE, IN PARTICULAR OF A DIESEL ENGINE
GB637950A (en) Improvements in cams for operating valves of internal combustion engines
JPS5218521A (en) Exhaust gas cleaning device of internal combustion engine
GB629500A (en) Improvements in cams for operating valves of internal combustion engines
JPS53329A (en) Exhaust gas purifacating system of internal combustion engine
GB204183A (en) An improvement in connection with the valvular arrangements of internal combustion engines
JPS54162019A (en) Valve driver for internal combustion engine
GB736668A (en) Improvements in or relating to cams for actuating the valves of internal combustion engines
GB733974A (en) Improvements relating to cams for internal combustion engines
JPS5240207A (en) High effeciency internal combustion engine
GB1036490A (en) Improvements relating to driving arrangements for the valves of internal combustion engines
JPS5316112A (en) Valve drive equipment of internal combustion engine
JPS5368303A (en) Exhaust gas clarifier
JPS51133617A (en) Variable cam shaft
GB990817A (en) Improvements in or relating to timing mechanisms in rotary-piston internal combustion engines
DK69767C (en) Device for two-stroke internal combustion engines with exhaust turbine.
JPS5298815A (en) Tight seal for intake and exhaust valve seal in internal combustion en gine
AU123623B2 (en) Improvements relating to valve tappets for internal combustion engines
GB432951A (en) Improvements in and relating to reciprocating overhead valves for internal combustion engines
AU122981B2 (en) Improvements in rockers for use more especially in operating overhead valves of internal combustion engines