FR2349030A1 - IC engine combustion chamber - has wedge shaped cutouts in cylinder head and piston crown to produce turbulent inlet flow - Google Patents

IC engine combustion chamber - has wedge shaped cutouts in cylinder head and piston crown to produce turbulent inlet flow

Info

Publication number
FR2349030A1
FR2349030A1 FR7708813A FR7708813A FR2349030A1 FR 2349030 A1 FR2349030 A1 FR 2349030A1 FR 7708813 A FR7708813 A FR 7708813A FR 7708813 A FR7708813 A FR 7708813A FR 2349030 A1 FR2349030 A1 FR 2349030A1
Authority
FR
France
Prior art keywords
combustion chamber
cylinder head
wedge shaped
piston crown
inlet flow
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Withdrawn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
FR7708813A
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Publication of FR2349030A1 publication Critical patent/FR2349030A1/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Withdrawn legal-status Critical Current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
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • 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
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
    • 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
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • 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)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

The cylinder head is provided with a wedge shaped combustion chamber (4) communicating with the intake port (5) via the inlet valve (6). The spark plug (7) extends into the blunt end of the combustion chamber. The piston crown has a recess (8) corresponding in shape to the cylinder head combustion chamber with the respective blunt ends (4a, 8a) opposite to each other and the opposite surfaces parallel. The two parallel surfaces form a compression zone at piston top dead centre. The inlet valve is set at an angle to the cylinder axis, which causes the incoming gases to flow to one side of the combustion chamber. A turbulent flow follows to form a gas ring which benefits ignition when an exhaust feed back system is employed.
FR7708813A 1976-04-21 1977-03-24 IC engine combustion chamber - has wedge shaped cutouts in cylinder head and piston crown to produce turbulent inlet flow Withdrawn FR2349030A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1976050510U JPS52141504U (en) 1976-04-21 1976-04-21

Publications (1)

Publication Number Publication Date
FR2349030A1 true FR2349030A1 (en) 1977-11-18

Family

ID=12860948

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7708813A Withdrawn FR2349030A1 (en) 1976-04-21 1977-03-24 IC engine combustion chamber - has wedge shaped cutouts in cylinder head and piston crown to produce turbulent inlet flow

Country Status (3)

Country Link
JP (1) JPS52141504U (en)
DE (1) DE2717326A1 (en)
FR (1) FR2349030A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072109A2 (en) * 1981-08-03 1983-02-16 General Motors Corporation Enchanced combustion internal combustion engine and method
EP0261716A2 (en) * 1986-09-09 1988-03-30 ALFA LANCIA S.p.A. Combustion chamber for a reciprocating engine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5857613B2 (en) * 1979-03-05 1983-12-21 トヨタ自動車株式会社 internal combustion engine
JPS591329B2 (en) * 1979-03-05 1984-01-11 トヨタ自動車株式会社 internal combustion engine
JPS5681219A (en) * 1979-12-03 1981-07-03 Toyota Motor Corp Internal combustion engine
DE3110986C2 (en) * 1981-03-20 1983-12-01 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Mixture-compressing reciprocating internal combustion engine with spark plug ignition
CN108798872A (en) * 2018-06-21 2018-11-13 江苏大学 Combustion chamber, cylinder head and miniature gasoline engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072109A2 (en) * 1981-08-03 1983-02-16 General Motors Corporation Enchanced combustion internal combustion engine and method
EP0072109A3 (en) * 1981-08-03 1983-09-07 General Motors Corporation Enchanced combustion internal combustion engine and method
EP0261716A2 (en) * 1986-09-09 1988-03-30 ALFA LANCIA S.p.A. Combustion chamber for a reciprocating engine
EP0261716A3 (en) * 1986-09-09 1989-03-15 Alfa Lancia Industriale S.P.A. Combustion chamber for a reciprocating engine

Also Published As

Publication number Publication date
JPS52141504U (en) 1977-10-26
DE2717326A1 (en) 1977-11-10

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Legal Events

Date Code Title Description
ST Notification of lapse