GB1404924A - Inner seal for rotary piston engines and a method of manufacturing it - Google Patents

Inner seal for rotary piston engines and a method of manufacturing it

Info

Publication number
GB1404924A
GB1404924A GB180274A GB180274A GB1404924A GB 1404924 A GB1404924 A GB 1404924A GB 180274 A GB180274 A GB 180274A GB 180274 A GB180274 A GB 180274A GB 1404924 A GB1404924 A GB 1404924A
Authority
GB
United Kingdom
Prior art keywords
zone
rotary piston
leduburitic
jan
blank
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
GB180274A
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.)
Wankel GmbH
Audi AG
Original Assignee
Audi NSU Auto Union AG
Wankel GmbH
Audi 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 Audi NSU Auto Union AG, Wankel GmbH, Audi AG filed Critical Audi NSU Auto Union AG
Publication of GB1404924A publication Critical patent/GB1404924A/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
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

1404924 Making seals for Wankel engines AUDI NSU AUTO UNION AG and WANKEL GmbH 15 Jan 1974 [17 Jan 1973] 1802/74 Heading B3A [Also in Division F1] In a method of making a scraper ring for a rotary piston a cast-iron blank 1 is heated within an annular zone 3, or 12, by, e.g. a gasprotected electric arc, an electron beam or a laser beam until molten, the zone is chilled rapidly to form a leduburitic structure and the blank is machined to reduce the cross-section as indicated by broken lines 6, 7; 9, 7; or 13, to produce a scraping edge 8, or 14. Alternatively, the ring is formed by centrifugal casting and chilled while in the mould to create the leduburitic structure. A martensitic structure is obtained in the region adjoining the said zone. A grey cast-iron with a low phosphorus and sulphur content is preferred.
GB180274A 1973-01-17 1974-01-15 Inner seal for rotary piston engines and a method of manufacturing it Expired GB1404924A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732302119 DE2302119C3 (en) 1973-01-17 1973-01-17 Process for the production of an inner seal for rotary piston machines

Publications (1)

Publication Number Publication Date
GB1404924A true GB1404924A (en) 1975-09-03

Family

ID=5869181

Family Applications (1)

Application Number Title Priority Date Filing Date
GB180274A Expired GB1404924A (en) 1973-01-17 1974-01-15 Inner seal for rotary piston engines and a method of manufacturing it

Country Status (6)

Country Link
JP (1) JPS5821083B2 (en)
DE (1) DE2302119C3 (en)
FR (1) FR2324882A1 (en)
GB (1) GB1404924A (en)
IT (1) IT1003287B (en)
SE (1) SE405493B (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1312997A (en) * 1969-09-13 1973-04-11 Toyo Kogyo Co Apex seal for rotary piston engine and method of producing same

Also Published As

Publication number Publication date
IT1003287B (en) 1976-06-10
JPS5047207A (en) 1975-04-26
JPS5821083B2 (en) 1983-04-27
FR2324882A1 (en) 1977-04-15
DE2302119B2 (en) 1978-03-23
SE405493B (en) 1978-12-11
DE2302119A1 (en) 1974-07-18
DE2302119C3 (en) 1978-11-23
FR2324882B1 (en) 1978-07-13

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Legal Events

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