GB1481280A - Hydraulic chain-tensioning apparatus - Google Patents

Hydraulic chain-tensioning apparatus

Info

Publication number
GB1481280A
GB1481280A GB3412475A GB3412475A GB1481280A GB 1481280 A GB1481280 A GB 1481280A GB 3412475 A GB3412475 A GB 3412475A GB 3412475 A GB3412475 A GB 3412475A GB 1481280 A GB1481280 A GB 1481280A
Authority
GB
United Kingdom
Prior art keywords
duct
oil
piston
pressure
chain
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
GB3412475A
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
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 Daimler Benz AG filed Critical Daimler Benz AG
Publication of GB1481280A publication Critical patent/GB1481280A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F16H7/0848—Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
    • 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
    • F16H2007/0802—Actuators for final output members
    • F16H2007/0806—Compression coil springs
    • 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
    • F16H2007/0802—Actuators for final output members
    • F16H2007/0812—Fluid pressure
    • 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
    • F16H2007/0802—Actuators for final output members
    • F16H2007/0812—Fluid pressure
    • F16H2007/0814—Fluid pressure with valves opening on surplus pressure
    • 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
    • F16H7/0848—Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
    • F16H2007/0859—Check valves
    • 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
    • F16H2007/0889—Path of movement of the finally actuated member
    • F16H2007/0891—Linear path
    • 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
    • F16H7/0829—Means for varying tension of belts, ropes, or chains with vibration damping means

Landscapes

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

Abstract

1481280 Chain tensioners DAIMLER-BENZ AG 15 Aug 1975 [22 Aug 1974] 34124/75 Heading F2Q In an hydraulically-actuated chain tensioning apparatus, a pivoted member 18 is urged against a chain 14 by a nose portion 27 of a piston 21 in a cylinder 20 and an hydraulic fluid under pressure is supplied through a non-return valve 26 located downstream of a supply duct 25, wherein the duct 25 slopes downwards in the direction of flow, and another passage 35 forming a throttling orifice leading into a low-pressure space 40 is disposed at a high level in the downward slope of duct 25. The source of hydraulic fluid may be the lubricating oil circuit of a reciprocating-piston engine, although such oil commonly includes a large amount of air entrapped. Air bubbles in the oil will rise up the sloping path of duct 25, in a direction opposite to that of the flow. Bubbles or foam reaching the passage 35 then become flushed away through the throttling orifice. The sloping arrangement of the duct 25 ensures that a reserve quantity of de-aerated oil is retained and does not drain away when the engine is stopped. A pressure-limiting valve 37 prevents any excessive pressure which might result from small pumping movements of piston 21 in oscillation when the cylinder is already full of oil.
GB3412475A 1974-08-22 1975-08-15 Hydraulic chain-tensioning apparatus Expired GB1481280A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2440197 1974-08-22

Publications (1)

Publication Number Publication Date
GB1481280A true GB1481280A (en) 1977-07-27

Family

ID=5923771

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3412475A Expired GB1481280A (en) 1974-08-22 1975-08-15 Hydraulic chain-tensioning apparatus

Country Status (2)

Country Link
FR (1) FR2282581A1 (en)
GB (1) GB1481280A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143926A (en) * 1983-07-21 1985-02-20 Porsche Ag Chain drive of a reciprocating-piston internal combustion engine
GB2233062A (en) * 1989-05-31 1991-01-02 Nissan Motor Engine chain tensioner
GB2267741A (en) * 1992-06-10 1993-12-15 Tsubakimoto Chain Co Oil-operated tensioner with air bleeding mechanism
EP0952375A3 (en) * 1998-04-20 2000-07-26 Borg-Warner Automotive, Inc. Hydraulic tensioner with pressure relief valve
US6383103B1 (en) 1999-02-18 2002-05-07 Tsubakimoto Chain Co. Hydraulic tensioner
DE10155364A1 (en) * 2001-11-10 2003-05-22 Bayerische Motoren Werke Ag Hydraulic tensioner for chain or belt drives of internal combustion engines has tension piston and cylindrical insert between compression spring and chamber base as piston valve controlling outlet opening in piston wall
EP1528287A1 (en) * 2003-10-28 2005-05-04 Tsubakimoto Chain Co. Hydraulic tensioner
WO2021236056A1 (en) * 2020-05-18 2021-11-25 Innio Waukesha Gas Engines Inc. System and method for extending oil life in an engine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3145115C2 (en) * 1981-11-13 1983-12-08 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart "Hydraulic chain tensioner"
DE3217632A1 (en) * 1982-05-11 1983-11-17 Porsche Ag HYDRAULIC CHAIN TENSIONER
US6171208B1 (en) * 1999-01-27 2001-01-09 Pellegrini Meccanica S.P.A. Device for tensioning flexible elements wound onto pulleys

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143926A (en) * 1983-07-21 1985-02-20 Porsche Ag Chain drive of a reciprocating-piston internal combustion engine
GB2233062A (en) * 1989-05-31 1991-01-02 Nissan Motor Engine chain tensioner
US5030169A (en) * 1989-05-31 1991-07-09 Nissan Motor Co., Ltd. Chain tensioner
GB2233062B (en) * 1989-05-31 1992-12-16 Nissan Motor Chain tensioner
GB2267741A (en) * 1992-06-10 1993-12-15 Tsubakimoto Chain Co Oil-operated tensioner with air bleeding mechanism
GB2267741B (en) * 1992-06-10 1996-02-07 Tsubakimoto Chain Co Oil-operated tensioner with air bleeding mechanism
EP0952375A3 (en) * 1998-04-20 2000-07-26 Borg-Warner Automotive, Inc. Hydraulic tensioner with pressure relief valve
US6361458B1 (en) 1998-04-20 2002-03-26 Borgwarner Inc. Hydraulic tensioner with pressure relief valve
US6383103B1 (en) 1999-02-18 2002-05-07 Tsubakimoto Chain Co. Hydraulic tensioner
DE10007478B4 (en) * 1999-02-18 2006-09-21 Tsubakimoto Chain Co. Hydraulic tensioning device
DE10155364A1 (en) * 2001-11-10 2003-05-22 Bayerische Motoren Werke Ag Hydraulic tensioner for chain or belt drives of internal combustion engines has tension piston and cylindrical insert between compression spring and chamber base as piston valve controlling outlet opening in piston wall
EP1528287A1 (en) * 2003-10-28 2005-05-04 Tsubakimoto Chain Co. Hydraulic tensioner
US7513842B2 (en) 2003-10-28 2009-04-07 Tsubakimoto Chain Co. Hydraulic tensioner
WO2021236056A1 (en) * 2020-05-18 2021-11-25 Innio Waukesha Gas Engines Inc. System and method for extending oil life in an engine
US11808183B2 (en) 2020-05-18 2023-11-07 Innio Waukesha Gas Engines Inc. System and method for extending oil life in an engine

Also Published As

Publication number Publication date
FR2282581A1 (en) 1976-03-19
FR2282581B1 (en) 1978-09-01

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee