GB129729A - Improvements in or relating to Mechanism for the Control of Valves of Internal Combustion Engines. - Google Patents

Improvements in or relating to Mechanism for the Control of Valves of Internal Combustion Engines.

Info

Publication number
GB129729A
GB129729A GB1833717A GB1833717A GB129729A GB 129729 A GB129729 A GB 129729A GB 1833717 A GB1833717 A GB 1833717A GB 1833717 A GB1833717 A GB 1833717A GB 129729 A GB129729 A GB 129729A
Authority
GB
United Kingdom
Prior art keywords
valve
piston
pressure
underside
reservoir
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
GB1833717A
Inventor
Harry Ralph Ricardo
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1833717A priority Critical patent/GB129729A/en
Publication of GB129729A publication Critical patent/GB129729A/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
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • F01L1/462—Valve return spring arrangements
    • F01L1/465—Pneumatic arrangements
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

129,729. Ricardo, H. R. Dec. 11, 1917. Valve-gear.-In a combined cam and fluid actuated gear, a beat or lift valve is opened by a cam. and closed, normally by fluid pressure, and at starting or during slow running, wholly or in part by a spring. In the construction shown, the valve spindle carries a piston D, the underside of which is acted upon by compressed air delivered from a reservoir L supplied by an engine-driven pump N. The closing pressure on the valve thus varies with the speed of the engine, the reservoir pressure being determined by a controlled escapeorifice L<1>. Mounted on the stem of the valve is a loose spring-actuated piston.H open to the atmosphere on its underside through a passage G<1>. At starting, the spring holds the piston H in its uppermost position in contact with the underside of the piston D. As the pressure in the reservoir increases, the piston H is gradually returned to the position shown, the seating of the valve then being effected entirely by the pressure of the air in the chamber E. Air trapped in a chamber D<1> acts as a buffer and prevents the valve from closing violently upon its seat Specification 125,659 is referred to.
GB1833717A 1917-12-11 1917-12-11 Improvements in or relating to Mechanism for the Control of Valves of Internal Combustion Engines. Expired GB129729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1833717A GB129729A (en) 1917-12-11 1917-12-11 Improvements in or relating to Mechanism for the Control of Valves of Internal Combustion Engines.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1833717A GB129729A (en) 1917-12-11 1917-12-11 Improvements in or relating to Mechanism for the Control of Valves of Internal Combustion Engines.

Publications (1)

Publication Number Publication Date
GB129729A true GB129729A (en) 1919-07-24

Family

ID=32347931

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1833717A Expired GB129729A (en) 1917-12-11 1917-12-11 Improvements in or relating to Mechanism for the Control of Valves of Internal Combustion Engines.

Country Status (1)

Country Link
GB (1) GB129729A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3722483A (en) * 1969-11-10 1973-03-27 H Overby Pneumatic valve closing mechanism
US5203535A (en) * 1991-06-13 1993-04-20 North American Philips Corporation Cam actuated valve assembly with hydraulic spring
WO1993008377A1 (en) * 1991-10-25 1993-04-29 Peter Kuhn Device for actuating the valves in an internal-combustion engine by means of rotating cams
GB2374900A (en) * 2001-04-24 2002-10-30 Ilmore Engineering Ltd Poppet valve spring mechanism eg for i.c. engine inlet and exhaust valves
EP2208871A1 (en) * 2009-01-20 2010-07-21 BRP-Powertrain GmbH & Co. KG Internal combustion engine air spring system arrangement
EP2913489A1 (en) * 2014-02-28 2015-09-02 Ilmor Engineering Limited Valve assembly
CN115949790A (en) * 2022-12-15 2023-04-11 东台市顺达工业气体有限公司 Anti-leakage gas pipeline self-closing valve
DE102022108081A1 (en) 2022-04-05 2023-10-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Pneumatic valve spring

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3722483A (en) * 1969-11-10 1973-03-27 H Overby Pneumatic valve closing mechanism
US5203535A (en) * 1991-06-13 1993-04-20 North American Philips Corporation Cam actuated valve assembly with hydraulic spring
WO1993008377A1 (en) * 1991-10-25 1993-04-29 Peter Kuhn Device for actuating the valves in an internal-combustion engine by means of rotating cams
US5601056A (en) * 1991-10-25 1997-02-11 Kuhn; Peter Device for actuating the valves in internal combustion engines by means of revolving cams
GB2374900A (en) * 2001-04-24 2002-10-30 Ilmore Engineering Ltd Poppet valve spring mechanism eg for i.c. engine inlet and exhaust valves
GB2374900B (en) * 2001-04-24 2004-09-01 Ilmor Engineering Ltd Valve spring mechanism
EP2208871A1 (en) * 2009-01-20 2010-07-21 BRP-Powertrain GmbH & Co. KG Internal combustion engine air spring system arrangement
US8375903B2 (en) 2009-01-20 2013-02-19 Brp-Powertrain Gmbh & Co. Kg Internal combustion engine air spring system arrangement
EP2913489A1 (en) * 2014-02-28 2015-09-02 Ilmor Engineering Limited Valve assembly
US9399933B2 (en) 2014-02-28 2016-07-26 Plymouth Machine Integration, Llc Valve assembly
DE102022108081A1 (en) 2022-04-05 2023-10-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Pneumatic valve spring
DE102022108081B4 (en) 2022-04-05 2023-12-07 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Pneumatic valve spring
CN115949790A (en) * 2022-12-15 2023-04-11 东台市顺达工业气体有限公司 Anti-leakage gas pipeline self-closing valve
CN115949790B (en) * 2022-12-15 2023-11-21 湖州新奥燃气发展有限公司 Leak-proof gas pipeline self-closing valve

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