EP3612727A1 - Piston with a structured design - Google Patents
Piston with a structured designInfo
- Publication number
- EP3612727A1 EP3612727A1 EP18719122.6A EP18719122A EP3612727A1 EP 3612727 A1 EP3612727 A1 EP 3612727A1 EP 18719122 A EP18719122 A EP 18719122A EP 3612727 A1 EP3612727 A1 EP 3612727A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- around
- rib
- region
- ribs
- 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.)
- Pending
Links
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
- F02F3/0015—Multi-part pistons
- F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping
-
- 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
- F02F3/0076—Pistons the inside of the pistons being provided with ribs or fins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/10—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass pistons
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/02—Bearing surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/04—Resilient guiding parts, e.g. skirts, particularly for trunk pistons
-
- 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
- F02F2200/00—Manufacturing
- F02F2200/04—Forging of engine parts
Definitions
- the invention relates to a weight-optimized piston of an internal combustion engine and to a method for producing a weight-optimized piston according to the features of the respective preamble of the two independent claims.
- pistons are made from forged piston blanks.
- a production method is known from DE 10 2004 031 513 A1.
- a piston blank is forged and reshaped a projecting collar, so as to achieve the largely final shape of the piston, wherein behind the formed collar, a cavity is formed, which can be used for example as a cooling channel.
- the ready piston is available.
- the known piston is not yet optimized in terms of its weight, so that it is the object of the invention to reduce such a piston in terms of its weight, without suffering from the durability or strength.
- the invention is therefore based on the object to provide a piston improved over the known piston and a corresponding improved method for producing in particular a generic piston.
- the structural design of the piston 1 is characterized by at least one rib at a suitable location.
- the ribs are a rib 5 which is arranged on the inside of the respective supporting shaft wall section 2, and / or a rib 6 connecting the two pin hubs 4 in the interior area and / or a rib 7 extending transversely to a pin bore axis.
- FIG. 2 10 denotes a lifting groove and 1 1 denotes an opening for a cooling medium, which can be introduced and removed into a cooling channel (not shown here) of the piston.
- FIG. 3 is based on the piston 1 according to FIG. 1, wherein to clarify the course of the ribs 5, 6, 7 and their transition into areas with reduced wall thickness RW gridlines are shown.
- FIG. 4 is based on the piston 1 according to FIG.
- a circumferential bead 12 is arranged, wherein in a Sectionberiech around the opening 1 1 together with a Generalberiech the circumferential bead 12 a recess (trough 13) is formed.
- a recess trough 13
- the circumferential bead 12 thus causes a stiffening and the tub 13 not only a material reduction, but also a storage reservoir for the cooling medium for the purpose of further improved cooling of the piston first With 14, a beam splitter is referred to within the cooling channel, not shown, which may be present, but does not have to be present.
- FIG. 5 shows the situation with the piston, as is known from DE 10 2004 031 513 A1.
- This known piston has three annular grooves 15, 16, 17, wherein the free circumferential edge region of the deformed collar is materially connected in a joining region 18 to the main body of the piston blank.
- This joining region 18 lies in the region of the lowest (third) annular groove 17.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017108314 | 2017-04-19 | ||
PCT/EP2018/059875 WO2018192959A1 (en) | 2017-04-19 | 2018-04-18 | Piston with a structured design |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3612727A1 true EP3612727A1 (en) | 2020-02-26 |
Family
ID=62027989
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18719122.6A Pending EP3612727A1 (en) | 2017-04-19 | 2018-04-18 | Piston with a structured design |
Country Status (6)
Country | Link |
---|---|
US (1) | US11668263B2 (en) |
EP (1) | EP3612727A1 (en) |
CN (1) | CN110869600A (en) |
BR (1) | BR112019021016A2 (en) |
DE (1) | DE102018109205A1 (en) |
WO (1) | WO2018192959A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11566581B2 (en) | 2017-11-14 | 2023-01-31 | Ks Kolbenschmidt Gmbh | Steel piston with optimized design |
USD897373S1 (en) * | 2018-09-22 | 2020-09-29 | Chaoming Li | Piston |
USD1009938S1 (en) * | 2022-05-24 | 2024-01-02 | Reme, Llc | Elliptical piston for a rotary steerable tool |
US11994085B2 (en) * | 2022-06-28 | 2024-05-28 | GM Global Technology Operations LLC | Piston for use in internal combustion engines and method of making the piston |
DE102022209095A1 (en) | 2022-09-01 | 2024-03-07 | Federal-Mogul Nürnberg GmbH | Piston for an internal combustion engine and method for producing the same |
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-
2018
- 2018-04-18 DE DE102018109205.9A patent/DE102018109205A1/en not_active Ceased
- 2018-04-18 EP EP18719122.6A patent/EP3612727A1/en active Pending
- 2018-04-18 WO PCT/EP2018/059875 patent/WO2018192959A1/en unknown
- 2018-04-18 BR BR112019021016A patent/BR112019021016A2/en not_active IP Right Cessation
- 2018-04-18 CN CN201880025842.9A patent/CN110869600A/en active Pending
- 2018-04-18 US US16/605,521 patent/US11668263B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102018109205A1 (en) | 2018-10-25 |
CN110869600A (en) | 2020-03-06 |
BR112019021016A2 (en) | 2020-05-05 |
WO2018192959A1 (en) | 2018-10-25 |
US11668263B2 (en) | 2023-06-06 |
US20200072158A1 (en) | 2020-03-05 |
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