US2168103A - Piston - Google Patents
Piston Download PDFInfo
- Publication number
- US2168103A US2168103A US227423A US22742338A US2168103A US 2168103 A US2168103 A US 2168103A US 227423 A US227423 A US 227423A US 22742338 A US22742338 A US 22742338A US 2168103 A US2168103 A US 2168103A
- Authority
- US
- United States
- Prior art keywords
- piston
- crown
- secured
- skirt
- sodium
- 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 - Lifetime
Links
- 238000001816 cooling Methods 0.000 description 9
- 241001125879 Gobio Species 0.000 description 8
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 7
- 230000037431 insertion Effects 0.000 description 7
- 238000003780 insertion Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 229910052708 sodium Inorganic materials 0.000 description 7
- 239000011734 sodium Substances 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000002826 coolant Substances 0.000 description 6
- 159000000000 sodium salts Chemical class 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
Images
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
- F02F3/18—Pistons having cooling means the means being a liquid or solid coolant, e.g. sodium, in a closed chamber in piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0448—Steel
Definitions
- This invention relates to pistons for internal combustion engines, and has for its object to provide improvements in the construction ofthe pistons which enables modern requirements as to lightness to befullled consistent with strength and the dissipation of heat.
- the invention consists in a piston formed from thin metal, such as thin steel, and having a chamber therein for containing a cooling me- 10 dium, such as sodium or sodium salt, and wherer in means is provided extending between the crown and the gudgeon pin bosses for transmitting the force imposed upon the piston, characterized by the feature that the portion or area of the crown to which the said means is connected, has a highly heat conducting insertion associated therewith for dissipating the heat in said zone.
- a cooling me- 10 dium such as sodium or sodium salt
- the invention also consists in a piston according to the preceding paragraph, wherein the centre of the crown of the piston is supported from the bosses or boss region of the piston as by struts and/or an inner shell or lining, and the interior of the piston adjacent the crown isformed with a chamber or receptacle for containing a cooling medium, such as a readily fusible salt or metal, for example sodium or sodium-salt, ,in which receptacle there protrude's anv element which is made from highly heat conducting ma- I terial, such as copper, aluminium'or nickel, and
- a cooling medium such as a readily fusible salt or metal, for example sodium or sodium-salt
- This element therefore, and which may be inv the form of a dis'c and may be hollow and contain a. body of the coolant, serves to dissipatel heat from the centre of the crown.
- the cooling chamber is formed between the piston head and an insert in the form offa dome-shaped stamping or pressing, the
- stamping of suitable metal such as steel, and which forms with the inside surfaces of the piston, including the crown b thereof, av receptacle c for containing a cooling medium constituted by a readily fusible salt ormetal, such as for example, sodium or sodium salt; and within the piston as shown' in the case of Figure 1,y so as to protrude into the cooling receptacle, there is provided an element d which is secured to the centre of the crown of the piston on the inside thereof, and is formed from a highly heat conducting metal, such as for example, copper, aluminium or nickel.
- a highly heat conducting metal such as for example, copper, aluminium or nickel.
- the lininga may conveniently, be of domed form, and have its base secured to the inside surfaceof the piston head in the region of the gudgeon 'pin bosses e, while its apex extends within the piston to the centre of the crown thereof', between ⁇ which and the apex of the dome the said element is secured so as in the case of Figures 1,
- the element being conveniently in the formof 'a thin disc having its peripheral portion extending into the cooling chamber as shown, or it may be ⁇ formed of a hollow disc containing a body of the coolant.
- the heat'dissipating disc d may be secured to the outsides'urface of the lining, in the region thereof where the lining is in contact with the crown, and be secured between the lining and an archpiece f containing the g'udgeon pin bosses.
- a piston comprising a head, ⁇ a skirt and gudgeon pin bosses carried by the skirt, the piston beingformed from thinfmetal, such as thin steel, and having an interior chamber containing a .cooling medium, such as sodium or sodium salt, means extending between the piston crown and the gudgeonfpin bosses for transmitting'to the piston skirt the forces imposed upon the piston crown, and a highly heat conducting insertion connected with that portion or area of the crown to ,which the' said force transmittingY means is connected, the said insertion serving to dissipate heat from said portion or area of the crown.
- a .cooling medium such as sodium or sodium salt
- a piston comprising a head, a skirt and gudgeon pin bosses carried by the skirt, the pislton being formed from thin metal, suck. as thin steel and having an interior chamber containing a cooling medium, such as sodium or sodium 55' salt, strut means extending between the inner surface of the piston crown and the gudgeon pin bosses to aord a support for the central portion of the crown, and an4 element located between the crown and the said strut means so as to contact with both and' protrude into the cooling chamber, the said element being of a highly heat conducting material and serving to dissipate heat from the centre of the crown.
- a cooling medium such as sodium or sodium 55' salt
- a piston comprising a head, a skirt and gudgeon pin bosses carried by the skirt,.the piston being formed from thin metal, such as thin steel,
- a cup member secured within the piston interior so as to forma closed chamber therein, the walls of which .include the inner surface of the piston crown, cooling means such as sodium or sodium salt within said chamber, a reinforcing member secured within the piston interior so as to connect the gudgeon pin bosses in the piston skirt and having a portion extending to the centre of the piston crown, and a highly heat conducting insertion associated with the said reinforcing member so as to dissipate heat from the central crown portion.
- a piston as claimed in claim 3, wherein said heat conducting insertion consists of a metallic disc located between the central portion of the piston crown and the adjacent portion of the reinforcing member, so that the disc is in contact with both, and so that the peripheral portion of the disc extends into the cooling chamber.
- a piston as claimed in claim 3, wherein the heatconducting insertion is in the form of a thin metallic disc in contact with the in ner surface of the piston crown and with the said cup member.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
Aug. l, 1939. A. v. NlcoLLE PISTON Filed Aug. 29, 1938 E9n f.
4 m Wk m m` v Patented Aug. `l, 1939 UNITED STATES PISTON A rthur Villeneuve Nicolle, Twickenham, England Application August 29,
In Great Britain 7 Claims.
y"This invention relates to pistons for internal combustion engines, and has for its object to provide improvements in the construction ofthe pistons which enables modern requirements as to lightness to befullled consistent with strength and the dissipation of heat.
The invention consists in a piston formed from thin metal, such as thin steel, and having a chamber therein for containing a cooling me- 10 dium, such as sodium or sodium salt, and wherer in means is provided extending between the crown and the gudgeon pin bosses for transmitting the force imposed upon the piston, characterized by the feature that the portion or area of the crown to which the said means is connected, has a highly heat conducting insertion associated therewith for dissipating the heat in said zone.
The invention also consists in a piston according to the preceding paragraph, wherein the centre of the crown of the piston is supported from the bosses or boss region of the piston as by struts and/or an inner shell or lining, and the interior of the piston adjacent the crown isformed with a chamber or receptacle for containing a cooling medium, such as a readily fusible salt or metal, for example sodium or sodium-salt, ,in which receptacle there protrude's anv element which is made from highly heat conducting ma- I terial, such as copper, aluminium'or nickel, and
is in contact with the centre of the crown.
This element, therefore, and which may be inv the form of a dis'c and may be hollow and contain a. body of the coolant, serves to dissipatel heat from the centre of the crown.
Conveniently, the cooling chamber is formed between the piston head and an insert in the form offa dome-shaped stamping or pressing, the
base of which is secured to the inside of the head 40 in thev region of the ,gudgeon pin bosses, while the apex extends to the centre of the crown and is' secured through the medium of the element or discabove mentioned.
The reference above, land hereafter to thin metal or thin steel", is intended to cover a piston the thickness of the skirt, of which does 1938, Serial No. 227,423 September 30, 1937 (Cl. 12S-176) there is secured within the interior of a piston which may be formed from thin steel, a lining a which may be in the form of a thin pressing or.
stamping of suitable metal .such as steel, and which forms with the inside surfaces of the piston, including the crown b thereof, av receptacle c for containing a cooling medium constituted by a readily fusible salt ormetal, such as for example, sodium or sodium salt; and within the piston as shown' in the case of Figure 1,y so as to protrude into the cooling receptacle, there is provided an element d which is secured to the centre of the crown of the piston on the inside thereof, and is formed from a highly heat conducting metal, such as for example, copper, aluminium or nickel.
l'The lininga may conveniently, be of domed form, and have its base secured to the inside surfaceof the piston head in the region of the gudgeon 'pin bosses e, while its apex extends within the piston to the centre of the crown thereof', between`which and the apex of the dome the said element is secured so as in the case of Figures 1,
2 and 3, to be in contact with the crown b, and
so -as to protrude into vthe cooling chamber, the element being conveniently in the formof 'a thin disc having its peripheral portion extending into the cooling chamber as shown, or it may be` formed of a hollow disc containing a body of the coolant. Alternatively, and as shown in Figure 4, the heat'dissipating disc d may be secured to the outsides'urface of the lining, in the region thereof where the lining is in contact with the crown, and be secured between the lining and an archpiece f containing the g'udgeon pin bosses.
1.A piston comprising a head,` a skirt and gudgeon pin bosses carried by the skirt, the piston beingformed from thinfmetal, such as thin steel, and having an interior chamber containing a .cooling medium, such as sodium or sodium salt, means extending between the piston crown and the gudgeonfpin bosses for transmitting'to the piston skirt the forces imposed upon the piston crown, and a highly heat conducting insertion connected with that portion or area of the crown to ,which the' said force transmittingY means is connected, the said insertion serving to dissipate heat from said portion or area of the crown.
2. A piston comprising a head, a skirt and gudgeon pin bosses carried by the skirt, the pislton being formed from thin metal, suck. as thin steel and having an interior chamber containing a cooling medium, such as sodium or sodium 55' salt, strut means extending between the inner surface of the piston crown and the gudgeon pin bosses to aord a support for the central portion of the crown, and an4 element located between the crown and the said strut means so as to contact with both and' protrude into the cooling chamber, the said element being of a highly heat conducting material and serving to dissipate heat from the centre of the crown.
3. A piston comprising a head, a skirt and gudgeon pin bosses carried by the skirt,.the piston being formed from thin metal, such as thin steel,
a cup member secured within the piston interior so as to forma closed chamber therein, the walls of which .include the inner surface of the piston crown, cooling means such as sodium or sodium salt within said chamber, a reinforcing member secured within the piston interior so as to connect the gudgeon pin bosses in the piston skirt and having a portion extending to the centre of the piston crown, and a highly heat conducting insertion associated with the said reinforcing member so as to dissipate heat from the central crown portion.
4. A piston as claimed in claim 3, wherein said heat conducting insertion consists of a metallic disc located between the central portion of the piston crown and the adjacent portion of the reinforcing member, so that the disc is in contact with both, and so that the peripheral portion of the disc extends into the cooling chamber.
5. A piston as' claimed in claim 3, wherein the heat conducting insertion is in the form of a thin metallic disc located within the cooling chamber, and the said cup member is of dome shape with its periphery secured to the piston skirt and its apex extending to the centre of the piston crown.
6. A piston as claimed in claim 3, wherein the heatconducting insertion is in the form of a thin metallic disc in contact with the in ner surface of the piston crown and with the said cup member.
'1. A piston as claimed in claim 3, wherein the reinforcing member is of arch shape with its apex situated opposite the central portion of the piston crown, andthe said cup member is of dome shape conforming to the shape of the arch piece which is disposed exteriorly of the said chamber and in contact-l with the said dome.
` VILLENEUVE NICOLIE.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2168103X | 1937-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2168103A true US2168103A (en) | 1939-08-01 |
Family
ID=10900269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US227423A Expired - Lifetime US2168103A (en) | 1937-09-30 | 1938-08-29 | Piston |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2168103A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9127619B2 (en) | 2012-11-02 | 2015-09-08 | Federal-Mogul Corporation | Piston with a cooling gallery partially filled with a thermally conductive metal-containing composition |
-
1938
- 1938-08-29 US US227423A patent/US2168103A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9127619B2 (en) | 2012-11-02 | 2015-09-08 | Federal-Mogul Corporation | Piston with a cooling gallery partially filled with a thermally conductive metal-containing composition |
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