ES2067926T3 - Mecanismos de levas. - Google Patents

Mecanismos de levas.

Info

Publication number
ES2067926T3
ES2067926T3 ES91904941T ES91904941T ES2067926T3 ES 2067926 T3 ES2067926 T3 ES 2067926T3 ES 91904941 T ES91904941 T ES 91904941T ES 91904941 T ES91904941 T ES 91904941T ES 2067926 T3 ES2067926 T3 ES 2067926T3
Authority
ES
Spain
Prior art keywords
cam
follower
digital
cam element
valve
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
ES91904941T
Other languages
English (en)
Inventor
William Hurr
Jeffrey Allen
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.)
Group Lotus PLC
Original Assignee
Group Lotus PLC
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 Group Lotus PLC filed Critical Group Lotus PLC
Application granted granted Critical
Publication of ES2067926T3 publication Critical patent/ES2067926T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0031—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of tappet or pushrod length
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F01L1/143—Tappets; Push rods for use with overhead camshafts
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F01L1/146—Push-rods
    • 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
    • F01L1/267—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 with means for varying the timing or the lift of the valves
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0005—Deactivating valves
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0063—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
    • 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
    • F01L2305/00—Valve arrangements comprising rollers
    • 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
    • F02F7/006—Camshaft or pushrod housings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

LA INVENCION SE REFIERE A MECANISMOS DE LEVA PARA CONTROLAR LOS ELEMENTOS DE VALVULA Y EN PARTICULAR A UN MECANISMO DE LEVA PARA CONTROLAR LA VALVULA DE ENTRADA Y SALIDA DE UN MOTOR DE COMBUSTION INTERNA. EL MECANISMO DE LEVA COMPRENDE UN ARBOL DE LEVAS (10) QUE TIENE UN PRIMER (50) Y UN SEGUNDO (51) ELEMENTO DE LEVA MONTADOS SOBRE EL MISMO PARA ROTACION CON ESTE Y UN PRIMER (52) Y SEGUNDO (62) SEGUIDOR DIGITAL QUE TIENEN UN PRIMER (59) Y SEGUNDO (61) SEGUIDOR RESPECTIVAMENTE DISPUESTOS PARA SEGUIR LA SUPERFICIE DEL PRIMER (50) Y SEGUNDO (51) ELEMENTO DE LEVA, EL PRIMER (52) Y SEGUNDO (62) SEGUIDOR DIGITAL SIENDO OSCILABLES SOBRE UN PUNTO DE APOYO (54 Y 66) QUE SUJETA LOS SEGUIDORES DIGITALES (52 O 62) ACOPLADOS CON EL ELEMENTO DE LEVA (50 O 51) Y LA VALVULA (14) PERMITIENDO POR ELLO EL CONTROL DE LA VALVULA (14) MEDIANTE EL ELEMENTO DE LEVA. EL PRIMER ELEMENTO DE LEVA (50), EL PRIMER ELEMENTO SEGUIDOR (59) Y EL PRIMER ELEMENTO SEGUIDOR DIGITAL (52) COMPRENDEN UN PRIMER MECANISMO DE LEVA DECORTA DURACION PARA VELOCIDADES BAJAS DEL MOTOR, ESTANDO LOS ELEMENTOS OSCILABLES (54 Y 56) EN UNA PRIMERA POSICION A BAJA VELOCIDAD EN LA QUE EL PRIMER SEGUIDOR DE LEVA (59) ESTA ADAPTADO CON EL PRIMER ELEMENTO DE LEVA (50). A VELOCIDADES DE MOTOR SUPERIORES LOS ELEMENTOS OSCILABLES (66 Y 55) FUNCIONAN EN UNA SEGUNDA POSICION EN DONDE EL SEGUNDO ELEMENTO DE LEVA (51), EL SEGUNDO SEGUIDOR (61) Y EL SEGUNDO SEGUIDOR DIGITAL (62) ACTUAN COMO UN MECANISMO DE LEVA DE LARGA DURACION, ESTANDO EL SEGUNDO SEGUIDOR DE LEVA (61) ADAPTADO AL SEGUNDO ELEMENTO DE LEVA (51).
ES91904941T 1990-02-16 1991-02-15 Mecanismos de levas. Expired - Lifetime ES2067926T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909003603A GB9003603D0 (en) 1990-02-16 1990-02-16 Cam mechanisms

Publications (1)

Publication Number Publication Date
ES2067926T3 true ES2067926T3 (es) 1995-04-01

Family

ID=10671162

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91904941T Expired - Lifetime ES2067926T3 (es) 1990-02-16 1991-02-15 Mecanismos de levas.

Country Status (9)

Country Link
US (2) US5386806A (es)
EP (1) EP0515528B1 (es)
JP (1) JP2558031B2 (es)
KR (1) KR960007964B1 (es)
BR (1) BR9106005A (es)
DE (1) DE69105265T2 (es)
ES (1) ES2067926T3 (es)
GB (1) GB9003603D0 (es)
WO (1) WO1991012415A1 (es)

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JP2577252B2 (ja) * 1988-10-11 1997-01-29 本田技研工業株式会社 内燃機関の動弁装置
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US5419290A (en) 1995-05-30
JPH05504390A (ja) 1993-07-08
EP0515528A1 (en) 1992-12-02
BR9106005A (pt) 1992-11-10
WO1991012415A1 (en) 1991-08-22
KR960007964B1 (ko) 1996-06-17
GB9003603D0 (en) 1990-04-11
US5386806A (en) 1995-02-07
DE69105265T2 (de) 1995-04-13
EP0515528B1 (en) 1994-11-23
DE69105265D1 (de) 1995-01-05
JP2558031B2 (ja) 1996-11-27

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