Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
  • F02F3/00—Pistons 
  • F02F3/16—Pistons  having cooling means
  • F02F3/20—Pistons  having cooling means the means being a fluid flowing through or along piston
  • F02F3/22—Pistons  having cooling means the means being a fluid flowing through or along piston the fluid being liquid

Definitions

• the invention relates to a piston for a
• cooling oil to inject For example, cooling oil to inject. It will be understood that under no circumstances may there be too little clearance between the cooling oil nozzle and any parts of the piston or even a collision between these components. Accordingly, it has hitherto been necessary to adapt the piston design to optionally changed positions of the cooling oil nozzles. This can be particularly costly because economic because complete casting tools must be recreated.
• Piston shaft in the direction of the piston axis, that is formed in the axial direction notch is present. This serves to receive a cooling oil nozzle or a supply line for this purpose, in particular in the lower dead center of the piston.
• the object of the invention is to provide a piston for an internal combustion engine and an internal combustion engine equipped therewith, in which an increased flexibility with regard to
• this has at its in use position usually lower, that is, the piston head, which limits the combustion chamber, opposite edge on at least one recess formed in the radial direction.
• it is through leg wall portions that abut the cylinder walls in use and the connecting walls
• the described recess or niche can be formed even with a reduced wall thickness on the inside, the additional space for
• Cooling oil nozzle was offset a little in the radial direction outwards, and thereby the design of the piston would have to be changed.
• the described recess or niche allows additional
• Cooling oil positions so that the usability of the improved piston according to the invention, and the
• indentations or the like at the lower edge of the piston can advantageously be avoided in that, as is preferred, the lower edge of the piston in the region of the recess is approximately at the same level as adjacent thereto.
• the recess may be beneficial to form the recess with a depth in the radial direction, starting from the lower edge in the direction of the piston axis
• the invention further describes an internal combustion engine, which has at least one cooling oil nozzle in addition to the previously described piston. For the distance between the cooling oil nozzle and the described recess is currently, to the
• the figure shows a perspective bottom view of the piston according to the invention.
• the figure shows a piston 10 according to the invention from its underside opposite the piston head 12.
• the lower edge of the piston 10 is here by the respective lower edge of skirt wall portions 14 and
• Wall thickness and / or located in the axial direction at a substantially constant level edge in the radial Direction slightly bulged, so that on the inside, that is, to the opposite connecting wall 16, a recess or wipe is formed.
• a cooling oil nozzle can be accommodated even when the position is changed, so that the possible use of the piston according to the invention improves in an economically favorable manner.

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Pistons, Piston Rings, And Cylinders (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=43086964

Family Applications (1)

Country Status (8)

Families Citing this family (4)

Citations (6)

Family Cites Families (16)

• 2009
  • 2009-10-07 DE DE102009045437A patent/DE102009045437A1/de not_active Withdrawn
• 2010
  • 2010-09-01 US US13/499,973 patent/US20120260869A1/en not_active Abandoned
  • 2010-09-01 ES ES10752751T patent/ES2559507T5/es active Active
  • 2010-09-01 EP EP10752751.7A patent/EP2486263B2/de not_active Not-in-force
  • 2010-09-01 HU HUE10752751A patent/HUE028228T2/en unknown
  • 2010-09-01 WO PCT/EP2010/062799 patent/WO2011042264A1/de not_active Ceased
  • 2010-09-01 PL PL10752751T patent/PL2486263T5/pl unknown
  • 2010-09-01 JP JP2012532517A patent/JP5859967B2/ja not_active Expired - Fee Related

Patent Citations (6)

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