GB1408112A - Compression-ignition internal combustion engines - Google Patents

Compression-ignition internal combustion engines

Info

Publication number
GB1408112A
GB1408112A GB2930173A GB2930173A GB1408112A GB 1408112 A GB1408112 A GB 1408112A GB 2930173 A GB2930173 A GB 2930173A GB 2930173 A GB2930173 A GB 2930173A GB 1408112 A GB1408112 A GB 1408112A
Authority
GB
United Kingdom
Prior art keywords
aperture
curvature
piston
bulge
diameter
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.)
Expired
Application number
GB2930173A
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.)
CUNEWALDE MOTOREN
Original Assignee
CUNEWALDE MOTOREN
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 CUNEWALDE MOTOREN filed Critical CUNEWALDE MOTOREN
Publication of GB1408112A publication Critical patent/GB1408112A/en
Expired 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
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0675—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston the combustion space being substantially spherical, hemispherical, ellipsoid or parabolic
    • 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
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0645—Details related to the fuel injector or the fuel spray
    • F02B23/066—Details related to the fuel injector or the fuel spray the injector being located substantially off-set from the cylinder centre axis
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/14—Direct injection into combustion chamber
    • 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
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0618—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston having in-cylinder means to influence the charge motion
    • F02B23/0624—Swirl flow
    • 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
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0645—Details related to the fuel injector or the fuel spray
    • F02B23/0648—Means or methods to improve the spray dispersion, evaporation or ignition
    • F02B23/0651—Means or methods to improve the spray dispersion, evaporation or ignition the fuel spray impinging on reflecting surfaces or being specially guided throughout the combustion space
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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)

Abstract

1408112 Fuel-injection I C engines MOTORENWERK CUNEWALDE VEB 20 June 1973 [28 June 1972] 29301/73 Heading FIB The centre of curvature of the 3 spherical portion of the combustion chamber 2 in the piston is offset in one direction from the piston axis 6 and the centre of curvature of the circular portion of the aperture 3 in the piston top surface 1 is offset in the opposite direction from the axis towards a bulge 31 forming a discontinuity in the spherical shape of the chamber and the circular shape of the aperture. A fuel injector 4 disposed eccentrically of the piston axis 6 provides a jet 41 directed in the direction # of air swirling in the chamber 2. At least one of the bulge walls extends as a tangent 32 to the aperture at the point where the mouth of the bulge merges with the circular aperture and the tangents may subtend an angle α between 90 and 120 degrees. The jet 41 forms an acute angle # with the tangents 32. The offsets a and b of the centres of curvature of the sphere and circle may be between 3 and 7% and 1 and 3% respectively of the maximum combustion chamber diameter, this maximum diameter being between 1.1 and 1.2 times the aperture diameter.
GB2930173A 1972-06-28 1973-06-20 Compression-ignition internal combustion engines Expired GB1408112A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD164013A DD101941A1 (en) 1972-06-28 1972-06-28

Publications (1)

Publication Number Publication Date
GB1408112A true GB1408112A (en) 1975-10-01

Family

ID=5487220

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2930173A Expired GB1408112A (en) 1972-06-28 1973-06-20 Compression-ignition internal combustion engines

Country Status (3)

Country Link
DD (1) DD101941A1 (en)
FR (1) FR2191607A5 (en)
GB (1) GB1408112A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118244A (en) * 1981-05-29 1983-10-26 Maschf Augsburg Nuernberg Ag Air-compression direct-injection internal combustion engine
FR2880923A1 (en) * 2005-01-19 2006-07-21 Renault Sas Combustion chamber for compression ignition internal combustion engine, has piston with cavity, opposite to cylinder head portion, forming piston tulip whose one portion presents lip at its entry and another portion does not present lip

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118244A (en) * 1981-05-29 1983-10-26 Maschf Augsburg Nuernberg Ag Air-compression direct-injection internal combustion engine
FR2880923A1 (en) * 2005-01-19 2006-07-21 Renault Sas Combustion chamber for compression ignition internal combustion engine, has piston with cavity, opposite to cylinder head portion, forming piston tulip whose one portion presents lip at its entry and another portion does not present lip

Also Published As

Publication number Publication date
DE2328157A1 (en) 1974-01-10
DD101941A1 (en) 1973-11-20
DE2328157B2 (en) 1977-05-26
FR2191607A5 (en) 1974-02-01

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees