WO2022118341A3 - Unité de puissance - Google Patents

Unité de puissance Download PDF

Info

Publication number
WO2022118341A3
WO2022118341A3 PCT/IN2021/051129 IN2021051129W WO2022118341A3 WO 2022118341 A3 WO2022118341 A3 WO 2022118341A3 IN 2021051129 W IN2021051129 W IN 2021051129W WO 2022118341 A3 WO2022118341 A3 WO 2022118341A3
Authority
WO
WIPO (PCT)
Prior art keywords
rocker arm
power unit
pivotable
cam
valves
Prior art date
Application number
PCT/IN2021/051129
Other languages
English (en)
Other versions
WO2022118341A2 (fr
Inventor
Lakshmi Narasimhan VARADHA IYENGAR
Balasubramanian THIRUVALLUR LOGANATHAN
Vythilingam KARUNAHARAN
Original Assignee
Tvs Motor Company Limited
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 Tvs Motor Company Limited filed Critical Tvs Motor Company Limited
Publication of WO2022118341A2 publication Critical patent/WO2022118341A2/fr
Publication of WO2022118341A3 publication Critical patent/WO2022118341A3/fr

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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/181—Centre pivot rocking arms
    • 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
    • F01L1/18—Rocking arms or levers
    • F01L1/185—Overhead end-pivot rocking arms
    • 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
    • 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
    • F01L2001/0476—Camshaft bearings
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L2001/186—Split rocking arms, e.g. rocker arms having two articulated parts and means for varying the relative position of these parts or for selectively connecting the parts to move in unison
    • 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
    • F01L2013/10—Auxiliary actuators for variable valve timing
    • F01L2013/101—Electromagnets
    • 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
    • F01L2013/10—Auxiliary actuators for variable valve timing
    • F01L2013/103—Electric motors
    • 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

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 présente invention concerne une unité de puissance dotée d'un système de calage de distribution variable. L'unité de puissance (100) comprend un ensemble culasse (102). Un système de calage de distribution variable (200) comprend une première came (211) servant à actionner une ou plusieurs premières soupapes (218) par l'intermédiaire d'un premier culbuteur (205). Le premier culbuteur (205) peut pivoter autour d'un premier axe (S-S') d'un premier axe de culbuteur (225). La seconde came (212) permet d'actionner sélectivement la ou les premières soupapes (218) par l'intermédiaire d'un second culbuteur (230). Le second culbuteur (230) peut pivoter autour du premier axe (S-S'). Une unité de coopération (240) est conçue pour mettre en coopération le premier culbuteur (220) avec le second culbuteur (230) par l'intermédiaire d'une première partie de coopération (265).
PCT/IN2021/051129 2020-12-03 2021-11-30 Unité de puissance WO2022118341A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202041052608 2020-12-03
IN202041052608 2020-12-03

Publications (2)

Publication Number Publication Date
WO2022118341A2 WO2022118341A2 (fr) 2022-06-09
WO2022118341A3 true WO2022118341A3 (fr) 2022-07-21

Family

ID=79093077

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2021/051129 WO2022118341A2 (fr) 2020-12-03 2021-11-30 Unité de puissance

Country Status (1)

Country Link
WO (1) WO2022118341A2 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2689177A1 (fr) * 1992-03-31 1993-10-01 Renault Dispositif de distribution variable pour moteur à combustion interne .
US5975251A (en) * 1998-04-01 1999-11-02 Diesel Engine Retarders, Inc. Rocker brake assembly with hydraulic lock
US20060283412A1 (en) * 2005-06-20 2006-12-21 Hitachi, Ltd. Valve actuation device of internal combustion engine
EP2876269A2 (fr) * 2013-11-06 2015-05-27 Yamaha Hatsudoki Kabushiki Kaisha Véhicule de type deux-roues à selle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2689177A1 (fr) * 1992-03-31 1993-10-01 Renault Dispositif de distribution variable pour moteur à combustion interne .
US5975251A (en) * 1998-04-01 1999-11-02 Diesel Engine Retarders, Inc. Rocker brake assembly with hydraulic lock
US20060283412A1 (en) * 2005-06-20 2006-12-21 Hitachi, Ltd. Valve actuation device of internal combustion engine
EP2876269A2 (fr) * 2013-11-06 2015-05-27 Yamaha Hatsudoki Kabushiki Kaisha Véhicule de type deux-roues à selle

Also Published As

Publication number Publication date
WO2022118341A2 (fr) 2022-06-09

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