FR2371576A1 - Four stroke IC engine - has auxiliary cylinder for every pair of working cylinders to increase expansion ratio - Google Patents

Four stroke IC engine - has auxiliary cylinder for every pair of working cylinders to increase expansion ratio

Info

Publication number
FR2371576A1
FR2371576A1 FR7635630A FR7635630A FR2371576A1 FR 2371576 A1 FR2371576 A1 FR 2371576A1 FR 7635630 A FR7635630 A FR 7635630A FR 7635630 A FR7635630 A FR 7635630A FR 2371576 A1 FR2371576 A1 FR 2371576A1
Authority
FR
France
Prior art keywords
auxiliary cylinder
engine
working cylinders
stroke
pair
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Withdrawn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
FR7635630A
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 FR7635630A priority Critical patent/FR2371576A1/en
Publication of FR2371576A1 publication Critical patent/FR2371576A1/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Withdrawn legal-status Critical Current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
    • F02B41/06—Engines with prolonged expansion in compound cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

The spark ignition reciprocating engine has an additional auxiliary cylinder for every two working cylinders. Each additional cylinder has a cross sectional area at least twice that of the working cylinders and contains a piston connected to the same crankshaft as the working pistons. The timing is arranged so that the working cylinder exhaust valves open earlier than normal. the gases at a slightly higher pressure than normal are transferred to the auxiliary cylinder in which they are expanded further to a pressure lower than that obtainable in a conventional engine.
FR7635630A 1976-11-22 1976-11-22 Four stroke IC engine - has auxiliary cylinder for every pair of working cylinders to increase expansion ratio Withdrawn FR2371576A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7635630A FR2371576A1 (en) 1976-11-22 1976-11-22 Four stroke IC engine - has auxiliary cylinder for every pair of working cylinders to increase expansion ratio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7635630A FR2371576A1 (en) 1976-11-22 1976-11-22 Four stroke IC engine - has auxiliary cylinder for every pair of working cylinders to increase expansion ratio

Publications (1)

Publication Number Publication Date
FR2371576A1 true FR2371576A1 (en) 1978-06-16

Family

ID=9180335

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7635630A Withdrawn FR2371576A1 (en) 1976-11-22 1976-11-22 Four stroke IC engine - has auxiliary cylinder for every pair of working cylinders to increase expansion ratio

Country Status (1)

Country Link
FR (1) FR2371576A1 (en)

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Legal Events

Date Code Title Description
ST Notification of lapse