GB1439230A - Process of manufacturing valves for reciprocating piston internal-combustion''ngines and valves so manufactured - Google Patents

Process of manufacturing valves for reciprocating piston internal-combustion''ngines and valves so manufactured

Info

Publication number
GB1439230A
GB1439230A GB3886473A GB3886473A GB1439230A GB 1439230 A GB1439230 A GB 1439230A GB 3886473 A GB3886473 A GB 3886473A GB 3886473 A GB3886473 A GB 3886473A GB 1439230 A GB1439230 A GB 1439230A
Authority
GB
United Kingdom
Prior art keywords
valve
stem
parts
bore
valves
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
GB3886473A
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.)
MAN AG
Original Assignee
MAN Maschinenfabrik Augsburg Nuernberg 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
Priority claimed from DE19722240572 external-priority patent/DE2240572A1/en
Priority claimed from DE19732324850 external-priority patent/DE2324850C2/en
Application filed by MAN Maschinenfabrik Augsburg Nuernberg AG filed Critical MAN Maschinenfabrik Augsburg Nuernberg AG
Publication of GB1439230A publication Critical patent/GB1439230A/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
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/12—Cooling of valves
    • F01L3/14—Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

1439230 Making i.c. engine valves; welding by fusion MASCHINENFABRIK AUGSBURGNURNBERG AG 16 Aug 1973 [18 Aug 1972 17 May 1973] 38864/73 Headings B3A and B3R [Also in Division F2] A method of making a valve for an internal combustion engine, the valve having an evacuated inner cavity extending along its stem 101 and partially filled with a heat-conducting substance 111, which when the valve is in use is liquid, wherein two valve parts are provided of which a first part has an open-ended cavity, the heat-conducting substance is introduced in liquid form into the cavity of the first part, the valve parts are cooled to solidify the substance 111, the parts are assembled either before or after the cavity is evacuated and the parts are welded together in a vacuum chamber. The valve stem 101 is welded to the valve disc 107, preferably by electron beam welding, and during welding the stem is cooled to prevent melting of the heat-conducting substance. Cooling is effected by placing copper blocks on the stem and cooling coils may be used in addition. The inner cavity is partially filled with liquid sodium drawn off from below the surface of a supply in a reservoir, so that as far as possible contact with air is prevented. When the sodium has solidified, a closure member 110 is located on the valve stem, and when the parts are placed in the vacuum chamber, air is evacuated from the upper part of the bore 102 through recesses (not shown) formed in the member 110. The valve stem is formed with a central bore 103 communicating at one end with a collecting chamber 108, from which radiate recesses 109, and at the other end with the bore 102 via a constricted zone 105. Coolant flows from the bore 102 to the chamber 108 through a plurality of bores 104.
GB3886473A 1972-08-18 1973-08-16 Process of manufacturing valves for reciprocating piston internal-combustion''ngines and valves so manufactured Expired GB1439230A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19722240572 DE2240572A1 (en) 1972-08-18 1972-08-18 VALVE FILLED WITH THERMAL FLUID
DE19732324850 DE2324850C2 (en) 1973-05-17 1973-05-17 Method of manufacturing a valve

Publications (1)

Publication Number Publication Date
GB1439230A true GB1439230A (en) 1976-06-16

Family

ID=25763718

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3886473A Expired GB1439230A (en) 1972-08-18 1973-08-16 Process of manufacturing valves for reciprocating piston internal-combustion''ngines and valves so manufactured

Country Status (3)

Country Link
FR (1) FR2196432B1 (en)
GB (1) GB1439230A (en)
IT (1) IT990257B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1327752A1 (en) * 2001-12-27 2003-07-16 MAHLE Ventiltrieb GmbH Method for producing a gas exchange valve of an internal combustion engine
CN105443186A (en) * 2015-10-30 2016-03-30 重庆奇甫机械有限责任公司 Air valve with circulative spiral type conical cavity
CN107605562A (en) * 2017-09-13 2018-01-19 张家港保税区通勤精密机械有限公司 A kind of high intensity exhaust valve
CN108979776A (en) * 2018-09-21 2018-12-11 安徽全柴动力股份有限公司 A kind of rotary-type air valve bar diesel engine spiracle Oil sealing assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2936335A1 (en) * 1979-09-08 1981-04-16 MTU Motoren- und Turbinen-Union München GmbH, 8000 München METHOD FOR PRODUCING A SODIUM-FILLED VALVE

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1327752A1 (en) * 2001-12-27 2003-07-16 MAHLE Ventiltrieb GmbH Method for producing a gas exchange valve of an internal combustion engine
US6935296B2 (en) 2001-12-27 2005-08-30 Mahle Ventiltrieb Gmbh Method of producing a gas shuttle valve of an internal combustion engine
CN105443186A (en) * 2015-10-30 2016-03-30 重庆奇甫机械有限责任公司 Air valve with circulative spiral type conical cavity
CN107605562A (en) * 2017-09-13 2018-01-19 张家港保税区通勤精密机械有限公司 A kind of high intensity exhaust valve
CN108979776A (en) * 2018-09-21 2018-12-11 安徽全柴动力股份有限公司 A kind of rotary-type air valve bar diesel engine spiracle Oil sealing assembly

Also Published As

Publication number Publication date
IT990257B (en) 1975-06-20
FR2196432B1 (en) 1974-11-08
FR2196432A1 (en) 1974-03-15

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Legal Events

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