FR2238043A1 - Two stroke internal combustion engine - has secondary piston attached by spring to main piston - Google Patents

Two stroke internal combustion engine - has secondary piston attached by spring to main piston

Info

Publication number
FR2238043A1
FR2238043A1 FR7326318A FR7326318A FR2238043A1 FR 2238043 A1 FR2238043 A1 FR 2238043A1 FR 7326318 A FR7326318 A FR 7326318A FR 7326318 A FR7326318 A FR 7326318A FR 2238043 A1 FR2238043 A1 FR 2238043A1
Authority
FR
France
Prior art keywords
spring
piston
main piston
secondary piston
combustion engine
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.)
Granted
Application number
FR7326318A
Other languages
French (fr)
Other versions
FR2238043B1 (en
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.)
GATSERELIA MICHEL FR
Original Assignee
GATSERELIA MICHEL FR
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 GATSERELIA MICHEL FR filed Critical GATSERELIA MICHEL FR
Priority to FR7326318A priority Critical patent/FR2238043A1/en
Publication of FR2238043A1 publication Critical patent/FR2238043A1/en
Application granted granted Critical
Publication of FR2238043B1 publication Critical patent/FR2238043B1/fr
Granted legal-status Critical Current

Links

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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/20—Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18
    • 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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
    • F02B25/04—Engines having ports both in cylinder head and in cylinder wall near bottom of piston stroke
    • 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
    • F02B75/36—Engines with parts of combustion- or working-chamber walls resiliently yielding under pressure
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The secondary piston (PS) is above the main piston (PP) and linked to it by a compression spring (R). On the power stroke the spring is compressed and the two pistons descend together. From the bottom dead centre the spring returns the secondary piston more quickly than the main piston and the space between them uncovers the admission port (Ad) through which a fresh charge is drawn in. As the main piston moves up it compresses the charge and pushes it through the transfer passage (C) to the space above the secondary piston where combustion takes place. Exhaust is through a poppet valve (S) in the cylinder head.
FR7326318A 1973-07-18 1973-07-18 Two stroke internal combustion engine - has secondary piston attached by spring to main piston Granted FR2238043A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7326318A FR2238043A1 (en) 1973-07-18 1973-07-18 Two stroke internal combustion engine - has secondary piston attached by spring to main piston

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7326318A FR2238043A1 (en) 1973-07-18 1973-07-18 Two stroke internal combustion engine - has secondary piston attached by spring to main piston

Publications (2)

Publication Number Publication Date
FR2238043A1 true FR2238043A1 (en) 1975-02-14
FR2238043B1 FR2238043B1 (en) 1975-08-22

Family

ID=9122768

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7326318A Granted FR2238043A1 (en) 1973-07-18 1973-07-18 Two stroke internal combustion engine - has secondary piston attached by spring to main piston

Country Status (1)

Country Link
FR (1) FR2238043A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506838A1 (en) * 1981-05-27 1982-12-03 Wolff Rene Reciprocating piston IC-engine - has three coaxial pistons to define variable precompression volume for inlet air
FR2515732A1 (en) * 1981-11-05 1983-05-06 Nam Chul Woo POWER AMPLIFIER DEVICE FOR INTERNAL COMBUSTION ENGINES AND EXTERNAL COMBUSTION ENGINES
IT201900000439A1 (en) * 2019-01-11 2020-07-11 Giampaolo Oddi Internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506838A1 (en) * 1981-05-27 1982-12-03 Wolff Rene Reciprocating piston IC-engine - has three coaxial pistons to define variable precompression volume for inlet air
FR2515732A1 (en) * 1981-11-05 1983-05-06 Nam Chul Woo POWER AMPLIFIER DEVICE FOR INTERNAL COMBUSTION ENGINES AND EXTERNAL COMBUSTION ENGINES
IT201900000439A1 (en) * 2019-01-11 2020-07-11 Giampaolo Oddi Internal combustion engine
WO2020144594A1 (en) * 2019-01-11 2020-07-16 Oddi Giampaolo Internal combustion engine

Also Published As

Publication number Publication date
FR2238043B1 (en) 1975-08-22

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Legal Events

Date Code Title Description
ST Notification of lapse