SE7606604L - AIR COMPRESSIVE COMBUSTION ENGINES WITH DIRECT INJECTION - Google Patents

AIR COMPRESSIVE COMBUSTION ENGINES WITH DIRECT INJECTION

Info

Publication number
SE7606604L
SE7606604L SE7606604A SE7606604A SE7606604L SE 7606604 L SE7606604 L SE 7606604L SE 7606604 A SE7606604 A SE 7606604A SE 7606604 A SE7606604 A SE 7606604A SE 7606604 L SE7606604 L SE 7606604L
Authority
SE
Sweden
Prior art keywords
fuel
combustion chamber
plane
injection
piston
Prior art date
Application number
SE7606604A
Other languages
Swedish (sv)
Other versions
SE435642B (en
Inventor
A Urlaub
Original Assignee
Maschf Augsburg Nuernberg Ag
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 Maschf Augsburg Nuernberg Ag filed Critical Maschf Augsburg Nuernberg Ag
Publication of SE7606604L publication Critical patent/SE7606604L/en
Publication of SE435642B publication Critical patent/SE435642B/en

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
    • F02B23/0645—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
    • 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
    • F02B23/0636—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 having a substantially flat and horizontal bottom
    • 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
    • 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
    • F02B23/0672—Omega-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder center 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
    • F02B23/0621—Squish 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
    • 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)
  • Dispersion Chemistry (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

The piston (1), in its piston head (2), has a combustion chamber (3), formed in the shape of a solid of revolution about the piston longitudinal axis, with a maximum diameter (D), which is connected by a neck (4) of smaller diameter (d) to the interior space of the cylinder (5). The ratio (D/d) of the two diameters is less than or at most equal to 1.20. A spout (7) in the neck (4) serves for the injection of the fuel through an injection nozzle (8), which is arranged slanting in the cylinder head (9). The geometric point of impact (10) of the fuel jet (11) lies below the plane (y) and, viewed in the direction of rotation of the combustion air, at an angle ( alpha ) of 60 to 90 DEG downstream of the injection nozzle opening. From there the fuel disperses as a thin film on the combustion chamber wall (6). The combustion chamber wall (6) is in part also spherical below the plane (y) and - measured from the plane (y) - at a depth of approximately 2/3 of half the combustion chamber diameter (D) has a flattened portion (13), all the combustion air thereby being displaced directly into the area of the fuel injection. In this way an improved thermal mixture formation and hence a lower fuel consumption is obtained, together with an improved exhaust gas quality over the entire operating range, especially in idling and in the low and middle load range. <IMAGE>
SE7606604A 1975-06-10 1976-06-10 AIR COMPRESSOR COMBUSTION ENGINE WITH DIRECT INJECTION SE435642B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752525770 DE2525770A1 (en) 1975-06-10 1975-06-10 AIR COMPRESSING, DIRECT INJECTING COMBUSTION ENGINE

Publications (2)

Publication Number Publication Date
SE7606604L true SE7606604L (en) 1976-12-11
SE435642B SE435642B (en) 1984-10-08

Family

ID=5948710

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7606604A SE435642B (en) 1975-06-10 1976-06-10 AIR COMPRESSOR COMBUSTION ENGINE WITH DIRECT INJECTION

Country Status (13)

Country Link
JP (1) JPS51149410A (en)
CH (1) CH614266A5 (en)
DD (1) DD124927A1 (en)
DE (1) DE2525770A1 (en)
FR (1) FR2314358A1 (en)
GB (1) GB1521617A (en)
HU (1) HU174469B (en)
IN (1) IN145712B (en)
IT (1) IT1060662B (en)
RO (1) RO72094B (en)
SE (1) SE435642B (en)
SU (1) SU691103A3 (en)
TR (1) TR19622A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2709161A1 (en) * 1977-03-03 1978-09-07 Maschf Augsburg Nuernberg Ag AIR-COMPRESSING, DIRECT INJECTING COMBUSTION ENGINE
DE2815717A1 (en) * 1977-04-29 1978-11-02 List Hans AIR COMPRESSING, DIRECT INJECTING COMBUSTION ENGINE
DE2809914C2 (en) * 1978-03-08 1984-09-06 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Internal combustion engine
DE2826602C2 (en) * 1978-06-19 1982-07-15 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Air-compressing, direct-injection internal combustion engine
DE2842457C2 (en) * 1978-09-29 1983-12-29 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Air-compressing, direct-injection internal combustion engine
US4492193A (en) * 1979-09-26 1985-01-08 M.A.N. Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft Method of operating internal combustion engines
DE3121344C2 (en) * 1981-05-29 1983-11-10 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Air-compressing, direct-injection internal combustion engine
US4693218A (en) * 1984-09-12 1987-09-15 Yanmar Diesel Engine Co., Ltd. Internal combustion engine
JP5962835B1 (en) * 2015-10-30 2016-08-03 いすゞ自動車株式会社 Engine pistons
AT17205U1 (en) * 2020-06-18 2021-09-15 Innio Jenbacher Gmbh & Co Og Pistons for internal combustion engine and internal combustion engine with such

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB749825A (en) * 1951-12-17 1956-06-06 Hans Krug Improvements in and relating to fuel injection internal-combustion engines
DE1112670B (en) * 1955-10-05 1961-08-10 Maschf Augsburg Nuernberg Ag Air-compressing, self-igniting injection internal combustion engine with a combustion chamber arranged in the piston
DE1035966B (en) * 1956-11-23 1958-08-07 Daimler Benz Ag Internal combustion engine with fuel injection, in particular diesel engine

Also Published As

Publication number Publication date
FR2314358A1 (en) 1977-01-07
HU174469B (en) 1980-01-28
RO72094A (en) 1984-03-15
JPS5414241B2 (en) 1979-06-06
JPS51149410A (en) 1976-12-22
SU691103A3 (en) 1979-10-05
RO72094B (en) 1984-03-31
DD124927A1 (en) 1977-03-23
DE2525770A1 (en) 1976-12-23
IN145712B (en) 1978-12-02
TR19622A (en) 1979-09-03
FR2314358B1 (en) 1982-10-15
SE435642B (en) 1984-10-08
GB1521617A (en) 1978-08-16
IT1060662B (en) 1982-08-20
CH614266A5 (en) 1979-11-15

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