FR2394677A1 - Two stroke internal combustion engine - has membrane in crankcase to keep fuel charge separate from lubricating oil - Google Patents

Two stroke internal combustion engine - has membrane in crankcase to keep fuel charge separate from lubricating oil

Info

Publication number
FR2394677A1
FR2394677A1 FR7628941A FR7628941A FR2394677A1 FR 2394677 A1 FR2394677 A1 FR 2394677A1 FR 7628941 A FR7628941 A FR 7628941A FR 7628941 A FR7628941 A FR 7628941A FR 2394677 A1 FR2394677 A1 FR 2394677A1
Authority
FR
France
Prior art keywords
membrane
crankcase
combustion engine
internal combustion
lubricating oil
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.)
Withdrawn
Application number
FR7628941A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7628941A priority Critical patent/FR2394677A1/en
Publication of FR2394677A1 publication Critical patent/FR2394677A1/en
Withdrawn legal-status Critical Current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
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M3/00—Lubrication specially adapted for engines with crankcase compression of fuel-air mixture or for other engines in which lubricant is contained in fuel, combustion air, or fuel-air mixture
    • F01M3/02—Lubrication specially adapted for engines with crankcase compression of fuel-air mixture or for other engines in which lubricant is contained in fuel, combustion air, or fuel-air mixture with variable proportion of lubricant to fuel, lubricant to air, or lubricant to fuel-air-mixture
    • 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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/32—Engines with pumps other than of reciprocating-piston type
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

The engine has a crankcase (3) with a membrane (2) in a vertical plane running alongside the crankshaft (5). As the piston rises the membrane is pulled back by the suction in the crankcase and draws a charge in. On the downward stroke the membrane is pushed out and compresses the charge which enters the cylinder as soon the transfer port is uncovered by the piston. The suction and transfer ports have a common passage which contains a non return valve (1) in the suction inlet. The membrane separates the charge from oil (10) in the sump and thus reduces pollution in the exhaust.
FR7628941A 1976-09-23 1976-09-23 Two stroke internal combustion engine - has membrane in crankcase to keep fuel charge separate from lubricating oil Withdrawn FR2394677A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7628941A FR2394677A1 (en) 1976-09-23 1976-09-23 Two stroke internal combustion engine - has membrane in crankcase to keep fuel charge separate from lubricating oil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7628941A FR2394677A1 (en) 1976-09-23 1976-09-23 Two stroke internal combustion engine - has membrane in crankcase to keep fuel charge separate from lubricating oil

Publications (1)

Publication Number Publication Date
FR2394677A1 true FR2394677A1 (en) 1979-01-12

Family

ID=9178099

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7628941A Withdrawn FR2394677A1 (en) 1976-09-23 1976-09-23 Two stroke internal combustion engine - has membrane in crankcase to keep fuel charge separate from lubricating oil

Country Status (1)

Country Link
FR (1) FR2394677A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0065315A2 (en) * 1981-05-18 1982-11-24 Yamaha Motor Co., Ltd. Intake system for two-cycle internal combustion engines
EP0065297A2 (en) * 1981-05-14 1982-11-24 Yamaha Motor Co., Ltd. Intake system for two-cycle internal combustion engines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0065297A2 (en) * 1981-05-14 1982-11-24 Yamaha Motor Co., Ltd. Intake system for two-cycle internal combustion engines
EP0065297A3 (en) * 1981-05-14 1984-02-22 Yamaha Motor Co., Ltd. Intake system for two-cycle internal combustion engines
EP0065315A2 (en) * 1981-05-18 1982-11-24 Yamaha Motor Co., Ltd. Intake system for two-cycle internal combustion engines
EP0065315A3 (en) * 1981-05-18 1984-02-22 Yamaha Motor Co., Ltd. Intake system for two-cycle internal combustion engines

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Legal Events

Date Code Title Description
ST Notification of lapse
AR Application made for restoration
BD Lapse confirmed