US3868753A - Method for assembly of a rotary piston internal combustion engine - Google Patents

Method for assembly of a rotary piston internal combustion engine Download PDF

Info

Publication number
US3868753A
US3868753A US327950A US32795073A US3868753A US 3868753 A US3868753 A US 3868753A US 327950 A US327950 A US 327950A US 32795073 A US32795073 A US 32795073A US 3868753 A US3868753 A US 3868753A
Authority
US
United States
Prior art keywords
intermediate part
bearing pin
bearing
over
eccentric shaft
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 - Lifetime
Application number
US327950A
Other languages
English (en)
Inventor
Willi Springer
Walter Bellmann
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
Application granted granted Critical
Publication of US3868753A publication Critical patent/US3868753A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
    • F02B2053/005—Wankel engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2730/00—Internal-combustion engines with pistons rotating or oscillating with relation to the housing
    • F02B2730/01—Internal-combustion engines with pistons rotating or oscillating with relation to the housing with one or more pistons in the form of a disk or rotor rotating with relation to the housing; with annular working chamber
    • F02B2730/018—Internal-combustion engines with pistons rotating or oscillating with relation to the housing with one or more pistons in the form of a disk or rotor rotating with relation to the housing; with annular working chamber with piston rotating around an axis passing through the gravity centre, this piston or the housing rotating at the same time around an axis parallel to the first axis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49231—I.C. [internal combustion] engine making
    • Y10T29/49234—Rotary or radial engine making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/4984—Retaining clearance for motion between assembled parts

Definitions

  • Patent 11 1 11 3,868,753 Springer et al. Mar. 4, 1975 METHOD FOR ASSEMBLY OF A ROTARY 3.694.113 9/1972 Jones et al. 418/60 PISTON INTERNAL COMBUSTION ENGINE FOREIGN PATENTS 0R APPLICATIONS Inventors: Willi Springer, ndau; Walter 26,447 0/1968 Japan 4l8/61 Bellmann, Esslingen, both of Germany Primary E. ⁇ umi1zerC. W. Lanham [73] Assignee: Daimler-Benz Aktiengesellschaft, Asslswm 'f C Stuttgart, Germany Attorney, Agent, or FirmCra1g & Antonelli [22] Filed: Jan.
  • the present invention relates to a method for the assembly of a rotary piston internal combustion engine, especially of trochoidal type of construction, with a housing consisting essentially of two casing parts two end parts and an intermediate part and with two pistons which rotate on two eccentrics of an univided eccentric shaft which includes a bearing pin intermediate the two eccentrics which is adapted to be supported in a bearing of the undivided intermediate part, whereby the inner diameter of the bearing is larger than the diamter of an eccentric and the width of the intermediate part is larger than the intermediate space between the bearing pin and each of the two eccentrics.
  • the mentioned radial displacement of the intermediate part has been made possible with the engine proposed heretofore in that the width of the bearing is considerably smaller than the width of the intermediate part and that the intermediate part includes laterally such recesses or cutouts that the width of the intermediate part in its radially inner area is equal to the width of the bearing and therewith is smaller than the axial intermediate between the bearing pin and the eccentric.
  • These recesses in order to fulfill their purpose, have to extend radially outwardly so far that only very little space is left over in the radial direction in order to arrange seals between the intermediate part and the pistons. This space, at most, suffices for a gas-sealing ring, however, no oil sealing rings can be provided. This limitation is not acceptable at least with oil lubricated rotary piston internal combustion engines.
  • the present invention is concerned with the task to provide a method for the assembly of a rotary piston internal combustion engine of the aforementioned type which permits to leave unchanged the width of the intermediate part to such an extent that the contact surfaces between the piston and the intermediate part are sufficiently large for the accommodation of necessary parts, especially of gas and oil seal rings.
  • the underlying problems are solved according to the present invention in that the intermediate part, with inserted bearing, is slipped axially to the eccentric shaft over an eccentric until it abuts at the facing side of the bearing pin overa part of the circumference thereof, that thereupon the intermediate part is pivoted in such a manner that it comes to lie with the area of the circumference not abutting at the bearing pin, above the bearing'pin and within this area no longer lies over the eccentric, that subsequently the intermediate part is displaced radially under simultaneous partial backpivoting until the locations of the center longitudinal axes of the bearing and of the bearing pin differ only slightly'from one another, and that finally the intermediate part is pushed or slipped over the bearing pin under simultaneous complete back-pivoting.
  • the assembly is possible with an intermediate part whose width is constant up to the bearing so that the contact surfaces between the intermediate part and the pistons has a sufficient dimension.
  • the diameter of the bearing has to be made only slightly larger than the diameter of the eccentric so that the circumferential velocity of the bearing pin can be kept slight in a favorable manner.
  • this hearing with its entire width is located always laterally of the eccentric after the abutment of theintermediate part at the side of the bearing pin.
  • oil discharge bores may be provided thereby in the intermediate part directly adjacent the bearing so that the main proportion of the oil lubricating the bearing does not reach the interior space of the engine.
  • Another object of the present invention resides in a method for assembly a rotary piston internal combustion engine, especially of trochiodal construction which assures sufficient space for the installation of seals between the intermediate part and the respective piston.
  • a further object of the present invention resides in a method for assembling a rotary piston internal combustion engine of trochoidal construction which permits a 4 lubrication of the engine with the use of oil as lubricant pin.
  • FIG. 1 is an axial longitudinal cross-section view through an assembled rotary piston internal combustion engine in accordance with the present invention.
  • FIGS. 2 to 6 are partial somewhat schematic views indicating the individual steps involved in the assembly of the rotary piston internal combustion engine in accordance with the method of this invention.
  • the housing of the rotary piston internal combustion engine essentially consists of two casing parts 1 and 2, of two end parts 3 and 4 and of an intermediate part 5.
  • An eccentric shaft 6 is supported in the housing, and more particularly, in the two end parts 3 and 4 with the aid of slide bearings 7 and 8 and in the intermediate part with the aid of a slide bearing 9 which is disposed on a bearing pin 10 of the eccentric shaft 6.
  • Two pistons and 16 are supported on two eccentrics 11 and 12 of the eccentric shaft 6 with the aid of two slide bearings 13 and 14, respectively.
  • Reference numeral 17 designates conventional sealing bars in the piston corners, reference numeral 18 sealing strips of the piston 15 and 16 and reference numeral 23 oil sealing rings.
  • the bearing pin 10 and the slide bearing 9 are narrower than the intermediate part 5 so that adjacent the slide bearing 9 oil collecting grooves 19 as well as oil discharge bores 20 can be provided in the intermediate part5 which carry off the lubricating oil fed to the slide bearing 9 in a conventional manner not shown.
  • the bearing pin 10 has a slightly larger diameter than each of the two eccentrics 11 and 12 so that the intermediate part 5 together with the slide bearing 9 can be slipped over the same.
  • the axial intermediate space between the bearing pin 10 and each eccentric 11, 12 is less than the width of the intermediate part 5, the latter can be slipped over the bearing 10 only with the aid of the method of the present invention which will be described more fully hereinafter by refer ence to FIGS. 2 to 6, if one does not wish to subdivide the housing of the eccentric shaft 6.
  • the intermediate part5 together with the slide bearing 9 is at first slipped axially over the eccentric 11 until it abuts laterally at the bearing 10, i.e., at a portion of the lateral circumferential surface of the bearing 9. A radial displacement of the intermediate part is now not possible because the slide bearing 9 would then be seated immediately on the eccentric 11.
  • the second step of the method according to the present invention (FIG. 3) resides in that the intermediate part5 is pivoted in such a manner that it comes to lie over the bearing 10 with the area 5a of the cir- FIG. 5, the pivot movement of the intermediate part 5 is not obstructed by the casing part 2 so that the casing part 2 can be assembled with the eccentric shaft 6 already prior to the assembly of the intermediate part 5.
  • a method for the assembly ofa rotary piston internal combustion engine which comprises a housing composed of two casing parts, of two end parts and of an undivided intermediate part, and two pistons which rotate on two eccentrics of an undivided eccentric shaft which includes a bearing pin intermediate the two eetric and the width of the intermediate parts being larger than the intermediate spacing between the bearing pin and each of the two eccentrics, comprising the steps of causing relative movement between the intermediate part and the eccentric shaft such that the intermediate part with inserted bearing is in effect moved axially to the eccentric shaft over an eccentric thereof until it abuts at the side of the bearing pin facing the intermediate part over a part of the circumference thereof with an area of the circumference thereof not abutting the bearing pin lyihg within an area over the eccentric,-
  • a method according to claim 4 characterized that the intermediate part is displaced with inserted bearing axially to the eccentric shaft until it abuts at the side of the bearing pin over a part of its circumference, that the intermediate part is thereupon pivoted in such a manner that with the circumferential area thereof not installed position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
US327950A 1972-01-31 1973-01-30 Method for assembly of a rotary piston internal combustion engine Expired - Lifetime US3868753A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2204341A DE2204341A1 (de) 1972-01-31 1972-01-31 Verfahren zum zusammenbau einer rotationskolben-brennkraftmaschine

Publications (1)

Publication Number Publication Date
US3868753A true US3868753A (en) 1975-03-04

Family

ID=5834487

Family Applications (1)

Application Number Title Priority Date Filing Date
US327950A Expired - Lifetime US3868753A (en) 1972-01-31 1973-01-30 Method for assembly of a rotary piston internal combustion engine

Country Status (4)

Country Link
US (1) US3868753A (no)
DE (1) DE2204341A1 (no)
FR (1) FR2170721A5 (no)
GB (1) GB1378625A (no)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4487633A (en) * 1982-09-22 1984-12-11 Takenaka Komuten Co., Ltd. Water-inseparable concrete composition
US6539913B1 (en) 2002-01-14 2003-04-01 William P. Gardiner Rotary internal combustion engine
US20060039814A1 (en) * 2004-07-21 2006-02-23 Wankel Super Tec Gmbh Working unit of a rotary combustion engine
US20200018228A1 (en) * 2018-07-16 2020-01-16 Avner Ronen Rotary combustion engine rotor deactivation and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5203307A (en) * 1989-06-29 1993-04-20 Burtis Wilson A Rotary wankel type engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149778A (en) * 1960-01-25 1964-09-22 Danfoss Ved Ingenior Mads Clau Compressor particularly hermetically sealed motor-compressor for refrigerating units
US3302623A (en) * 1964-06-13 1967-02-07 N S U Motorenwerke Ag Air cooling for multi-unit rotary combustion engines
US3575537A (en) * 1968-06-06 1971-04-20 Toyo Kogyo Co Side housing of rotary piston engine
US3694113A (en) * 1971-01-12 1972-09-26 Curtiss Wright Corp Multi-unit rotary mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149778A (en) * 1960-01-25 1964-09-22 Danfoss Ved Ingenior Mads Clau Compressor particularly hermetically sealed motor-compressor for refrigerating units
US3302623A (en) * 1964-06-13 1967-02-07 N S U Motorenwerke Ag Air cooling for multi-unit rotary combustion engines
US3575537A (en) * 1968-06-06 1971-04-20 Toyo Kogyo Co Side housing of rotary piston engine
US3694113A (en) * 1971-01-12 1972-09-26 Curtiss Wright Corp Multi-unit rotary mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4487633A (en) * 1982-09-22 1984-12-11 Takenaka Komuten Co., Ltd. Water-inseparable concrete composition
US6539913B1 (en) 2002-01-14 2003-04-01 William P. Gardiner Rotary internal combustion engine
US20060039814A1 (en) * 2004-07-21 2006-02-23 Wankel Super Tec Gmbh Working unit of a rotary combustion engine
US20200018228A1 (en) * 2018-07-16 2020-01-16 Avner Ronen Rotary combustion engine rotor deactivation and method

Also Published As

Publication number Publication date
DE2204341A1 (de) 1973-08-09
GB1378625A (en) 1974-12-27
FR2170721A5 (no) 1973-09-14

Similar Documents

Publication Publication Date Title
US3139233A (en) Seal construction for rotary mechanisms
US4212473A (en) Multiple seal ring having a tapered surface, and a sealing device
US3251541A (en) Sealing construction for rotary mechanisms
US3930767A (en) Circular rotor side seal for rotary machines
US3333763A (en) Sealing arrangement for rotary engines
US3868753A (en) Method for assembly of a rotary piston internal combustion engine
US3180562A (en) Seals for rotary mechanisms
US3134600A (en) Seal construction for rotary mechanisms
US3799706A (en) Rotor assembly for a rotary machine
US2979042A (en) Seal vent arrangement for rotating combustion engines
US1827094A (en) Radial internal combustion engine
US3261542A (en) Rotor and seal construction for rotary mechanisms
US3883276A (en) Discharge arrangement for the exhaust gas from the work areas of a rotary piston combustion engine
US3096746A (en) Intermediate half bearing for rotary mechanisms
US3694113A (en) Multi-unit rotary mechanism
US3903847A (en) Rotary combustion engine
US3932075A (en) Rotor and sealing grid for rotary engines
GB1017568A (en) Rotary piston machines
US4219315A (en) Sealing member for orbital or rotary motors
US3357412A (en) Sealing arrangement
US3834845A (en) Side gas seal means for rotary mechanisms
US3706514A (en) Inner seal assembly for rotary mechanisms
US3213801A (en) Rotary engine
US5322425A (en) Rotary internal combustion engine
US3136304A (en) Rotary power device