FR2407346A1 - Reciprocating piston IC engine - with admission taking place over part only of stroke to increase expansion - Google Patents

Reciprocating piston IC engine - with admission taking place over part only of stroke to increase expansion

Info

Publication number
FR2407346A1
FR2407346A1 FR7732571A FR7732571A FR2407346A1 FR 2407346 A1 FR2407346 A1 FR 2407346A1 FR 7732571 A FR7732571 A FR 7732571A FR 7732571 A FR7732571 A FR 7732571A FR 2407346 A1 FR2407346 A1 FR 2407346A1
Authority
FR
France
Prior art keywords
stroke
place over
engine
taking place
reciprocating piston
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Withdrawn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
FR7732571A
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 FR7732571A priority Critical patent/FR2407346A1/en
Publication of FR2407346A1 publication Critical patent/FR2407346A1/en
Withdrawn legal-status Critical Current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
    • F02B41/00—Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power
    • F02B41/02—Engines with prolonged expansion
    • F02B41/04—Engines with prolonged expansion in main cylinders
    • 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
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four

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 engine operates on a four stroke cycle. The inlet valve remains open for part of the compression stroke so that some mixture is returned into the manifold. When the valve closes the mixture in the cylinder is compressed and ignition takes place near top dead centre. The next stroke is the working one. Expansion takes place over the whole stroke so that the expansion ratio is greater than the compression ratio. This permits exhaust to take place at a reduced pressure and increases the output.
FR7732571A 1977-10-28 1977-10-28 Reciprocating piston IC engine - with admission taking place over part only of stroke to increase expansion Withdrawn FR2407346A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7732571A FR2407346A1 (en) 1977-10-28 1977-10-28 Reciprocating piston IC engine - with admission taking place over part only of stroke to increase expansion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7732571A FR2407346A1 (en) 1977-10-28 1977-10-28 Reciprocating piston IC engine - with admission taking place over part only of stroke to increase expansion

Publications (1)

Publication Number Publication Date
FR2407346A1 true FR2407346A1 (en) 1979-05-25

Family

ID=9197059

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7732571A Withdrawn FR2407346A1 (en) 1977-10-28 1977-10-28 Reciprocating piston IC engine - with admission taking place over part only of stroke to increase expansion

Country Status (1)

Country Link
FR (1) FR2407346A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2484019A2 (en) * 1980-06-04 1981-12-11 Durand Georges IMPROVING EXPLOSION ENGINES TO ENSURE IMPROVED EFFICIENCY THROUGH RELATIVE LENGTHENING RELAXATION
FR2546972A1 (en) * 1983-06-06 1984-12-07 Lemaitre Patrick Improvement to internal combustion engines with injection, or carburettor, with or without conventional spark ignition, with or without supercharging, operating on the four-stroke or two-stroke cycle, with one or two fuels, and devices allowing this improvement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR653546A (en) * 1928-04-28 1929-03-22 Method of establishment of components of internal combustion or explosion engines
FR829615A (en) * 1937-11-22 1938-07-01 High expansion engine by rejecting the excess gas allowed
FR1472209A (en) * 1966-01-25 1967-03-10 Further training in internal combustion and internal combustion engines
FR2309720A1 (en) * 1975-05-02 1976-11-26 Durand Georges Engine expansion stroke lengthening - is by modifying inlet valve cams for 4-stroke or ports for 2-stroke

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR653546A (en) * 1928-04-28 1929-03-22 Method of establishment of components of internal combustion or explosion engines
FR829615A (en) * 1937-11-22 1938-07-01 High expansion engine by rejecting the excess gas allowed
FR1472209A (en) * 1966-01-25 1967-03-10 Further training in internal combustion and internal combustion engines
FR2309720A1 (en) * 1975-05-02 1976-11-26 Durand Georges Engine expansion stroke lengthening - is by modifying inlet valve cams for 4-stroke or ports for 2-stroke

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2484019A2 (en) * 1980-06-04 1981-12-11 Durand Georges IMPROVING EXPLOSION ENGINES TO ENSURE IMPROVED EFFICIENCY THROUGH RELATIVE LENGTHENING RELAXATION
EP0045669A1 (en) * 1980-06-04 1982-02-10 Georges Durand Working process of an internal-combustion engine with prolonged expansion and relative supercharging
FR2546972A1 (en) * 1983-06-06 1984-12-07 Lemaitre Patrick Improvement to internal combustion engines with injection, or carburettor, with or without conventional spark ignition, with or without supercharging, operating on the four-stroke or two-stroke cycle, with one or two fuels, and devices allowing this improvement

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Legal Events

Date Code Title Description
RE Withdrawal of published application