FR2238371A5 - Casing for rotating piston engine - inner surface has wear resistant coating covered by softer layer - Google Patents

Casing for rotating piston engine - inner surface has wear resistant coating covered by softer layer

Info

Publication number
FR2238371A5
FR2238371A5 FR7326604A FR7326604A FR2238371A5 FR 2238371 A5 FR2238371 A5 FR 2238371A5 FR 7326604 A FR7326604 A FR 7326604A FR 7326604 A FR7326604 A FR 7326604A FR 2238371 A5 FR2238371 A5 FR 2238371A5
Authority
FR
France
Prior art keywords
layer
piston engine
casing
rotating piston
resistant coating
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
FR7326604A
Other languages
French (fr)
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.)
SCEMM
Original Assignee
SCEMM
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 SCEMM filed Critical SCEMM
Priority to FR7326604A priority Critical patent/FR2238371A5/en
Application granted granted Critical
Publication of FR2238371A5 publication Critical patent/FR2238371A5/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
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

The inner surface of rotating piston engine casing has a hard and wear resisting coating which is on its turn covered by a layer of a more soft material. The thickness of this last layer is bigger than the radially measured maximum amplitude of free space existing, before any wearing of the soft layer takes place, between a rotor ring sliding against thw layer and the latter's surface, due to distortions, particularly of thermal origin, occuring when the engine is working. The hardness of the hard coating is greater than 400 Vickers while the softer one's hardness is less than 150 Vickers.
FR7326604A 1973-07-19 1973-07-19 Casing for rotating piston engine - inner surface has wear resistant coating covered by softer layer Expired FR2238371A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7326604A FR2238371A5 (en) 1973-07-19 1973-07-19 Casing for rotating piston engine - inner surface has wear resistant coating covered by softer layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7326604A FR2238371A5 (en) 1973-07-19 1973-07-19 Casing for rotating piston engine - inner surface has wear resistant coating covered by softer layer

Publications (1)

Publication Number Publication Date
FR2238371A5 true FR2238371A5 (en) 1975-02-14

Family

ID=9122871

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7326604A Expired FR2238371A5 (en) 1973-07-19 1973-07-19 Casing for rotating piston engine - inner surface has wear resistant coating covered by softer layer

Country Status (1)

Country Link
FR (1) FR2238371A5 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0109823A1 (en) * 1982-11-18 1984-05-30 Ingersoll-Rand Company Rotary displacement machine
EP0180788A1 (en) * 1984-10-08 1986-05-14 Shimadzu Corporation Gear pump or motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0109823A1 (en) * 1982-11-18 1984-05-30 Ingersoll-Rand Company Rotary displacement machine
EP0180788A1 (en) * 1984-10-08 1986-05-14 Shimadzu Corporation Gear pump or motor

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Legal Events

Date Code Title Description
ST Notification of lapse