US3791781A - Rotary piston internal combustion engine - Google Patents

Rotary piston internal combustion engine Download PDF

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Publication number
US3791781A
US3791781A US00267263A US3791781DA US3791781A US 3791781 A US3791781 A US 3791781A US 00267263 A US00267263 A US 00267263A US 3791781D A US3791781D A US 3791781DA US 3791781 A US3791781 A US 3791781A
Authority
US
United States
Prior art keywords
rotary piston
internal combustion
combustion engine
piston internal
center housing
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
US00267263A
Other languages
English (en)
Inventor
T Fujiyama
T Hamamoto
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.)
Mazda Motor Corp
Original Assignee
Toyo Kogyo Co Ltd
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 Toyo Kogyo Co Ltd filed Critical Toyo Kogyo Co Ltd
Application granted granted Critical
Publication of US3791781A publication Critical patent/US3791781A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02B55/00—Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons
    • F02B55/08—Outer members for co-operation with rotary pistons; Casings
    • 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

Definitions

  • FIG. 3 is a front sectional view of a rotary piston internal combustion engine showing another embodiment of this invention.
  • a casing 1 has a space 4 formed by the center housing 2 made of aluminum material and the side housings 3 disposed at both sides of the center housing 2.
  • the center housing 2 has a trochoidal sliding surface 5 formed by a chrome plated layer 6.
  • the side housings 3 are made of cast iron and those surfaces fastened to the end face of the center housing 2 are coated by a sprayed metal layer 7 such as high carbon steel (0.8 percent carbon steel).
  • a metal spray is exceptionally effective because of its simple procedure and superior self-lubrication. This anti-wear treatment may be effected on either the side housings or center housing, or
  • the center housing 2 and the side housings 3 are joined through said spray layer 7 and are firmly tightened by fastening bolts 8.
  • Water passages 9 and 10 form a water jacket and O ring indicated by 11. and 12 seal the components.
  • FIG. 3 shows another embodiment of this invention with metal sprayed only around the plug hole of the side housings within a 60 rotating angle of eccentric shaft 13.
  • abnormal wear is effected by high temperature and high pressures and is exceedingly increased. So, when the metal spray is treated on the fastening surface around the plug hole throughout at least a 60 rotating angle of eccentric shaft 13, it effects the same as when the metal spray is treated on all fastening surfaces.
  • the nearer the fastening surface is to trochoidal sliding surface the larger the abnormal wear. Accordingly, it is effective to provide the metal spray limited to a long and narrow situation and in parallel with trochoidal sliding surface 5.
  • This invention is constructed as mentioned above, and therefore, even where correlative slide is producted due to thermal deformation at the fixing surfaces between the center housing 2 and the side housings 3, the wear at the fastening surface is considerably decreased to prevent coolant leakage owing to abnormal wear of the fastening surface.
  • FIG. 1 is a vertical sectional view of a rotary piston

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Coating By Spraying Or Casting (AREA)
US00267263A 1971-06-29 1972-06-29 Rotary piston internal combustion engine Expired - Lifetime US3791781A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1971056728U JPS5028250Y2 (enrdf_load_stackoverflow) 1971-06-29 1971-06-29

Publications (1)

Publication Number Publication Date
US3791781A true US3791781A (en) 1974-02-12

Family

ID=13035547

Family Applications (1)

Application Number Title Priority Date Filing Date
US00267263A Expired - Lifetime US3791781A (en) 1971-06-29 1972-06-29 Rotary piston internal combustion engine

Country Status (4)

Country Link
US (1) US3791781A (enrdf_load_stackoverflow)
JP (1) JPS5028250Y2 (enrdf_load_stackoverflow)
FR (1) FR2144389A5 (enrdf_load_stackoverflow)
GB (1) GB1380787A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3923432A (en) * 1973-10-29 1975-12-02 Toyota Motor Co Ltd Rotor housing of a rotary engine
US3926539A (en) * 1972-05-09 1975-12-16 Daimler Benz Ag Rotary piston internal combustion engine
US4072451A (en) * 1976-10-12 1978-02-07 Sperry Rand Corporation Power transmission
US4097207A (en) * 1976-03-15 1978-06-27 Toyo Kogyo Co., Ltd. Casing for liquid-cooled rotary piston engines
US12152490B1 (en) * 2023-07-18 2024-11-26 Pratt & Whitney Canada Corp. Fretting resistant rotary engine housings
US12196154B2 (en) * 2023-05-31 2025-01-14 Pratt & Whitney Canada Corp. Rotary engine with seal having elastomeric and metallic members

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2200692A (en) * 1987-01-24 1988-08-10 Norton Motors Ltd Rotary internal-combustion engine
WO2018020496A1 (en) * 2016-07-25 2018-02-01 Tenenbaum Yehonatan Split-cycle engine with a variable displacement compressor and a rotary motor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3359953A (en) * 1965-03-10 1967-12-26 Nsu Motorenwerke Ag Rotary internal combustion engine
US3360191A (en) * 1967-12-26 Rotary piston and housing thereof
US3394877A (en) * 1966-12-15 1968-07-30 Sachwenring Automobilwerke Zwi Rotary piston engine
US3575537A (en) * 1968-06-06 1971-04-20 Toyo Kogyo Co Side housing of rotary piston engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360191A (en) * 1967-12-26 Rotary piston and housing thereof
US3359953A (en) * 1965-03-10 1967-12-26 Nsu Motorenwerke Ag Rotary internal combustion engine
US3394877A (en) * 1966-12-15 1968-07-30 Sachwenring Automobilwerke Zwi Rotary piston engine
US3575537A (en) * 1968-06-06 1971-04-20 Toyo Kogyo Co Side housing of rotary piston engine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926539A (en) * 1972-05-09 1975-12-16 Daimler Benz Ag Rotary piston internal combustion engine
US3923432A (en) * 1973-10-29 1975-12-02 Toyota Motor Co Ltd Rotor housing of a rotary engine
US4097207A (en) * 1976-03-15 1978-06-27 Toyo Kogyo Co., Ltd. Casing for liquid-cooled rotary piston engines
US4072451A (en) * 1976-10-12 1978-02-07 Sperry Rand Corporation Power transmission
US12196154B2 (en) * 2023-05-31 2025-01-14 Pratt & Whitney Canada Corp. Rotary engine with seal having elastomeric and metallic members
US12152490B1 (en) * 2023-07-18 2024-11-26 Pratt & Whitney Canada Corp. Fretting resistant rotary engine housings

Also Published As

Publication number Publication date
FR2144389A5 (enrdf_load_stackoverflow) 1973-02-09
JPS5028250Y2 (enrdf_load_stackoverflow) 1975-08-21
JPS4816205U (enrdf_load_stackoverflow) 1973-02-23
GB1380787A (en) 1975-01-15

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