GB2135222A - The reinforcement of pistons of aluminium or aluminium alloys - Google Patents
The reinforcement of pistons of aluminium or aluminium alloys Download PDFInfo
- Publication number
- GB2135222A GB2135222A GB08402516A GB8402516A GB2135222A GB 2135222 A GB2135222 A GB 2135222A GB 08402516 A GB08402516 A GB 08402516A GB 8402516 A GB8402516 A GB 8402516A GB 2135222 A GB2135222 A GB 2135222A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reinforcement
- aluminium
- aluminium alloy
- crown
- piston
- 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.)
- Granted
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
- F02F3/10—Pistons having surface coverings
- F02F3/12—Pistons having surface coverings on piston heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
- B22D15/02—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor of cylinders, pistons, bearing shells or like thin-walled objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
- B22D19/0027—Cylinders, pistons pistons
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- 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
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0085—Materials for constructing engines or their parts
- F02F7/0087—Ceramic materials
-
- 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
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- 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
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- 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S29/00—Metal working
- Y10S29/044—Vacuum
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49249—Piston making
- Y10T29/49252—Multi-element piston making
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49249—Piston making
- Y10T29/49256—Piston making with assembly or composite article making
- Y10T29/49261—Piston making with assembly or composite article making by composite casting or molding
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49988—Metal casting
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49993—Filling of opening
Description
1 GB 2 135 222 A 1
SPECIFICATION
The invention relates to the reinforcement of pistons of aluminium or aluminium alloy and in particular to the reinforcement of crowns of such pistons.
Because of their comparatively light weight, alu minium and aluminium alloys are commonly used in the manufacture of pistons for internal combustion engines. They suffer, however, from the disadvan tages that, as compared with many other metal materials, such as ferrous materials, they do not wear well and are not well able to withstand elevated temperatures. The most arduous conditions encoun tered by an internal combustion engine piston are at the crown end of the piston which, in use, bounds the combustion chamber, since it is in the combus tion chamber that the highest temperatures are 85 found.
Accordingly, there have been various proposals for reinforcing crowns of aluminium or aluminium alloy pistons to render them better able to withstand these conditions. In all such cases, however, there has been the problem of connecting the reinforcing materials securely to the aluminium or aluminium alloy because aluminium does not readily bond to many reinforcing materials and a strong bond is essential, since any failure of the connection can have far reaching consequences.
According to a first aspect of the invention, there is provided a method of reinforcing the crown of a piston of aluminium or aluminium alloy for an internal combustion engine, the method comprising 100 inserting a crown reinforcement member into a crown-forming part of a piston die, filling the die with molten aluminium or aluminium alloy and then solidifying the molten aluminium or aluminium alloy under pressure, the reinforcement being so shaped 105 that the solidified aluminium or aluminium alloy forms a mechanical interlock with the reinforcement whereby the reinforcement is connected to the aluminium or aluminium alloy.
According to a second aspect of the invention, there is provided wherein the groove is formed directly on the undersurface of the combustion chamber-forming portion of the reinforcement.
The following is a more detailed description of some embodiments of the invention, by way of example, reference being made to the accompany ing drawings in which:
Figure 1 shows a first form of reinforcement, the left-hand part of the Figure showing the reinforce ment before connection to a piston body of alumi nium or aluminium alloy and the right-hand part showing the reinforcement after such connection, Figure 2 shows a second form of reinforcement, the left-hand part showing the reinforcement before connection to a piston body of aluminium or alumi- 125 nium alloy and the right-hand part showing the reinforcement after such connection, Figure 3 is a schematic cross-section, through a lower die of a squeeze casting apparatus showing a reinforcement of the kind shown in Figure 1, located 130 The reinforcement of pistons of aluminium or aluminum alloy in the die, Figure 4 is a cross-section of part of a piston incorporating the reinforcement shown in Figure 1 and also having connected thereto a further crown part, Figure 5 is a cross-section of a third form of reinforcement connected to a crown of a piston for an internal combustion engine, Figure 6 is a cross-section of a fourth form of reinforcement connected to a piston for an internal combustion engine, and Figure 7 is a cross-section of a fifth form of reinforcement connected to a piston for an internal combustion engine.
Referring firstto Figure 1, a reinforcement 10 for an aluminium or aluminium alloy piston of an internal combustion engine is formed from a disc of sheet steel having substantially the same crosssectional area as the required cross-sectional area of the crown of the piston. The disc 10 is provided with apertures formed by holes 11 which are punched through the disc so that the material of the disc forms a depending annular converging flange 12 around each hole. In many cases, the edges of these flanges 12 will be ragged due to the punching process.
Referring next to Figure 2, the second reinforcement 13 is also formed from a disc of steel having substantially the same cross-sectional area as the required cross-sectional area of the completed piston. This disc 13 has apertures formed by passages 14 of circular cross-section with a lower part 15 of a lesser diameter and an upper part 16 of a greater diameter; the two part being connected by a step 17.
The following description of the incorporation of a reinforcement 10, 13 into a piston is in relation to the reinforcement 10 of Figure 1. It will be appreciated, however, that the reinforcement 13 of Figure 2 can be similarly incorporated.
The reinforcement 10 is placed in the crowndefining part of a lower die member 18 of a crown-down piston squeeze casting apparatus. The reinforcement 10 is arranged in the die 18 so that the flanges 12 project upwardly, as seen in Figure 3.
The lower die member 18 is then filled with molten aluminium or aluminium alloy and an upper die member (not shown) is lowered to close the die and then apply a load of several tons to the molten metal while it is solidifying. This causes the molten metal to beforced intothe holes 11 to reach the end ofthe die. After solidification has been completed, the cast piston is removed from the die 18.
As best seen in Figures 1 and 2, the solidified aluminium or aluminum alloy forms a key 19 in each hole 11 and, because of the outwardly flared shape of the holes, the reinforcement is firmly connected to the aluminium or aluminium alloy. The ragged edges of the flanges 12 assist in strengthening the connection.
if the reinforcement of Figure 2 is used, it will be seen that the aluminium or aluminium alloy forms a T-shaped key 20 in each hole 14, once again connecting the reinforcement 13 securely to the aluminium or aluminium piston body 21.
Such a reinforcement 10, 13 will itself provide a 2 GB 2 135 222 A 2 heat-resistant surface to the piston, thus enabling the piston to better withstand the temperatures encountered in use. However, it is also possible to use the reinforement to provide a base of a suitable material for the attachment of a further crown part to the reinforcement in order to improve the perform ance of the piston in this regard.
Referring next to Figure 4, it can be seen that a cap 22 may be welded or brazed on to the reinforcement; the cap having an annular flange 23 and a circular top 24 which forms the crown surface of the piston.
In this way, a closed chamber 25 is formed above the reinforcement 10 which insulates the surface of the crown from the aluminium or aluminium alloy body, thus further protecting the body against the temper atures of the combustion chamber.
It will be appreciated that the chamber may be filled with a heat-insulating material such as the porous metal material sold under the trade mark RETIME7. It will also be appreciated that the chamber may be evacuated to reduce further heat conduction therethrough.
In addition, the flange 23 of the cap 22 may be formed with grooves for receiving one or more piston rings.
The reinforcement need not be shaped as a disc, as show in Figures 1 and 2; it may have any convenient shape, for example it may include a combustion bowl formed integrally therewith. The holes do not have as shown in Figures 1 and 2, they can be of any suitable shape, provided they allow the aluminium or aluminium alloy of the body to form a mechanical interlock to provide the secure connec tion. For example, the flanges 12 of the Figure 1 embodiment could diverge away from the undersur face of the reinforcement, with the interlock being formed between the flange and the adjacent rein forcement surface.
Referring next to Figure 5, a piston comprising a body portion 30 of aluminium or aluminium alloy has connected thereto a third form of reinforcement 31.
The reinforcement 31 is formed from a precision cast steel and comprises a central combustion bowl 32 and an outer portion 33 having a flange 34 opening from its periphery. A plurality of leg 35 depend from the undersurface of the plate and terminate in increased diameter portions 35a, so forming a re-entrant 36 between each increased diameter portion 15a and the associated leg 35. As shown, the legs 35 depend from the undersurface of the outer portion 33 and from the undersurface of the combustion bowl 32. The cross-section of the legs 35 is as small as practicable to minimise the heat transfer downwardly from the legs and into the 120 aluminium or aluminium alloy.
The lower edge of the flange 34 is provided with an annular inwardly directed lip 37 so forming a further re-entrant 18 extending around the reinforce ment between the flange 14 and the outer portion 33. 125 A further re-entrant 39 is provided by a groove formed during the casting of the reinforcement 31 and extending around the undersurface of the combustion bowl 32.
The undersurface of the reinforcement 31 is 130 covered with a layer 40 of ceramic material which may be applied by a spray coating process or any other suitable process. Suitable ceramic materials are silicon-nitrides, or zirconium based ceramics or itria or magnesium based ceramics. For example, partially stabilized zirconia or magnesia partially stabilized zirconia may be used. The coating is arranged so that the legs are not covered. The purpose of the coating 40 is to provide a heat- Insulating barrier between the reinforcement 31 and the piston body 30.
The reinforcement 31 is incorporated into the piston in the following way.
The reinforcement 31 is placed in a crown-defining part of a lower die member of a crown-down piston squeeze casting apparatus of the kind shown in Figure 3 and described above with reference thereto. Accordingly, the undersurface of the reinforcement 31 faces upwardly.
The lower die member is then filled with molten aluminium or aluminium alloy and an upper die member is lowered to close the die and then apply a load of several tons to the molten metal while it is solidifying. This removes voids in the metal and causes the metal to flow into all the re-entrants 36, 38,39 provided on the undersurface of the reinforcement 31. After solidification has been completed, the upper die is removed and the cast piston is removed from the die.
As will be seen in Figure 5, the solidified aluminium or aluminium alloy in the re-entrants 36 around the legs, the re-entrant 38 around the flange and the re-entrant 39 around the combustion bowl 32 provide mechanical interlocks between the reinforce- ments 31 and the aluminium alloy holding these two parts together.
Accordingly, a piston is produced in which the crown and the combustion bowl 32 formed therein are formed of steel which is better able to withstand the high temperatures encountered in operation, particularly where the engine is a diesel engine. The reinforcement 31 and the piston body 30 are firmly interlocked to prevent any possibility of the reinforcement 31 becoming detached in operation.
Referring next to Figure 6, parts common to Figure 5 and to Figure 6 will be given the same reference numerals and will not be described in detail. In this embodiment, the legs 35 on the reinforcement 31 are omitted. The reinforcement 31 is otherwise the same and is connected to the aluminium or aluminium alloy as described above with reference to Figure 5. The flow of the aluminium or aluminium alloy into the re-entrant 38 between the flange 34 and the outer portion 33 of the reinforcement 31 and into the groove 39 around the combustion bowl 32 provides a mechanical interlock which has been found sufficient to hold the reinforcement 31 firmly in position on the aluminium or aluminium alloy body 30.
Referring next to Figure 7, parts common to Figure 5 and to Figure 7 will be given the same reference numerals and will not be described in detail.
In this embodiment, the reinforcement 31 is not provided with any legs 35 and the groove 39 on the undersurface of the combustion bowl 32 is omitted. Instead, the undersurface of the combustion bowl 32 k 1 0 3 is provided with a number of outwardly spaced projections 41. A steel cap 42 is press fitted over the undersurface of the combustion bowl 32 so that the inner surface of the cap 42 engages the projections 41 to space the cap 42 from the combustion chamber undersurface. In this way, a closed insulating chamber 43 is formed between the cap 42 and the combustion chamber 32. The cap 42 is provided with a circumferential re- entrant groove 44.
The outer surface of the outer portion 33 of the reinforcement 31 has a coating 45 of a ceramic material which may be any of the materials described above with reference to Figure 5 and be applied to any of the techniques described above with reference to Figure 5.
The reinforcement of Figure 7 is incorporated by squeeze casting in the manner described above with reference to Figure 5. The aluminium or aluminium alloy forms an interlock with the re-entrant 38 between the flange 34 and the outer portion 33 and the groove 44 of the steel cap 42. In this way, the reinforcement 31 is connected firmly to the piston body 30.
The closed chamber 43 provides an insulating air gap between the combustion bowl 32 and the aluminium or aluminium alloy body 30 and so reduces the transfer of heat from the combustion bowl 32 to the aluminium or aluminium alloy body 30.
It will be appreciated that, in any of the embodiments described above with reference to Figures 5 to 7 of the drawings, the number and position of the re-entrants provided can be varied as required. For example, only the legs 35 need be provided, or only the re-entrant 36 between the flange 34 and the outer portion 33 or only the groove 39 or 44 on the undersu rface of the combustion bowl 32 or the cap 42 or any combination of these re-entrants. It is not essential that the reinforcement forms a combustion bowl, it may be a disc of steel.
The reinforcement need not be made of steel; it can be made of any material better able than the aluminium or aluminium alloy to withstand the conditions encountered in the combustion chambers of internal combustion engines.
Claims (21)
1. A method of reinforcing the crown of a piston of aluminium or aluminium alloy for an internal combustion engine, the method comprising inserting a crown reinforcement member into a crownforming part of a piston die, filling the die with molten aluminium or aluminium alloy and then solidifying the molten aluminium or aluminium alloy 120 under pressure, the reinforcement being so shaped that the solidified aluminium or aluminium alloy forms a mechanical interlock with the reinforcement whereby the reinforcement is connected to the aluminium or aluminium alloy.
2. A method according to claim 1, wherein the reinforcement is provided with a plurality of apertures which are so shaped that the aluminium or aluminium alloy forms a key in each aperture.
3. A method according to claim 2, wherein the GB 2 135 22i A 3 reinforcement member is in the shape of a flat disc of a ferrous material with the apertures extending through the disc.
4. A method according to claim 2 or claim 3, wherein the apertures are formed by the punching of holes in the reinforcement member so that the material of the reinforcement forms a downwardly converging angular flange around each hole.
5. A method according to claim 2 or claim 3, wherein the apertures are formed by passages extending through the reinforcement and having a portion of greater cross-sectional area adjacent the upper surface of the reinforcement and a portion of lesser cross-sectional area adjacent the undersur- face with a step being provided between the two portions.
6. A method according to claim 5, wherein the passages are of circular cross-section.
7. A method according to claim 1, wherein the reinforcement is provided with one or more reentrant portions into which the molten aluminium or aluminium alloy flows during casting to form, on solidification, a key holding the reinforcement in position.
8. A method according to claim 7, wherein the re-entrant portion is formed by one or more legs, each depending from the reinforcement and having an increased diameter end portion to form, with the associated leg, a re-entraht portion.
9. A method according to claim 7 or claim 8, wherein the reinforcement defines a combustion bowl for the piston, the re-entrant portion comprising an annular groove extending around the combustion chamberforming portion of the reinforce- ment.
10. A method according to claim 9, wherein the groove is formed directly on the undersurface of the combustion chamber-forming portion of the reinforcement.
11. A method according to anyone of claims 1 to 10 and further comprising, after the connection of the reinforcement to the aluminium or aluminium alloy, the step of connecting a further crown part to the reinforcement.
12. A method acording to claim 11, wherein the further crown part forms a crown end surface and an insulating chamber between the reinforcement and said crown end surface.
13. A method according to claim 12, wherein the insulating chamber is filed with heat-insulating material or is evacuated.
14. A method according to anyone of claims 1 to 13, wherein the reinforcement includes an annular outer portion having a flange depending therefrom to form an outer edge of the crown, there being an annular reentrant portion formed between the flange and the outer portion into which the molten aluminium or aluminium alloy flows during casting to form, on solidification, a key holding the reinforce- ment in position.
15. A method according to anyone of claims 1 to 14, wherein the undersurface of the reinforcement is covered with a ceramic material.
16. A method according to anyone of claims 1 to 15, wherein at least a portion of the upper surface of 4 GB 2 135 222 A 4 the reinforcement is covered with ceramic material.
17. A method according to claim 15 or claim 16, wherein the ceramic material is sprayed onto the reinforcement. 5
18. A method according to claim 17, wherein the ceramic material is silicon-nitride or a zirconium based material or a magnesium based material.
19. A method of reinforcing a crown of a piston substantially as hereinbefore described with refer- ence to the accompanying drawings.
20. A piston for an internal combustion engine and comprising a body portion of aluminium or aluminium alloy connected to a crown reinforcement member, the reinforcement being so shaped that the aluminium or aluminium alloy forms a mechanical interlock with the reinforcement, whereby the reinforcement is connected to the aluminium or aluminium alloy.
21. A piston for an internal combustion engine substantially as hereinbefore described with reference to the accompanying drawings.
Printed in the U K for HMSO, D8818935,7184,7102. Published by The Patent Office, 25 Southampton Buildings, London, WC2A lAY, from which copies maybe obtained.
9 A
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB838303108A GB8303108D0 (en) | 1983-02-04 | 1983-02-04 | Reinforcement of pistons |
| GB838328116A GB8328116D0 (en) | 1983-10-20 | 1983-10-20 | Reinforcement of pistons |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8402516D0 GB8402516D0 (en) | 1984-03-07 |
| GB2135222A true GB2135222A (en) | 1984-08-30 |
| GB2135222B GB2135222B (en) | 1987-11-11 |
Family
ID=26285133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08402516A Expired GB2135222B (en) | 1983-02-04 | 1984-01-31 | The reinforcement of pistons of aluminium or aluminium alloys |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4599772A (en) |
| EP (1) | EP0118204B1 (en) |
| CA (1) | CA1250200A (en) |
| DE (1) | DE3465910D1 (en) |
| GB (1) | GB2135222B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2188123A (en) * | 1986-03-22 | 1987-09-23 | Kloeckner Humboldt Deutz Ag | Thermally insulated piston |
| GB2313564A (en) * | 1996-05-31 | 1997-12-03 | Hitachi Metals Ltd | Aluminium alloy member with insert provided therein possessing improved damping capacity |
| CN106567786A (en) * | 2016-11-04 | 2017-04-19 | 湖南江滨机器（集团）有限责任公司 | Piston and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR8500556A (en) * | 1985-02-07 | 1986-09-09 | Metal Leve S/A. Industria E Comercio | PUMP AND PUMP MANUFACTURING PROCESS FOR INTERNAL COMBUSTION ENGINES |
| CN85100486B (en) * | 1985-04-01 | 1988-10-26 | 谈诚 | The two-stroke strokes oscillating piston internal combustion engine |
| DE3514913A1 (en) * | 1985-04-25 | 1986-11-06 | Wankel Gmbh, 1000 Berlin | COMBINED HOUSING COVER OF A ROTARY PISTON MACHINE |
| GB8714287D0 (en) * | 1987-06-18 | 1987-07-22 | Ae Plc | Pistons |
| US5169054A (en) * | 1987-07-01 | 1992-12-08 | Kawasaki Jukogyo Kabushiki Kaisha | Method of manufacturing composite structures |
| US5244746A (en) * | 1987-07-01 | 1993-09-14 | Kawasaki Jukogyo Kabushiki Kaisha | Composite structures |
| US5226469A (en) * | 1987-07-01 | 1993-07-13 | Kawasaki Jukogyo Kabushiki Kaisha | Composite structures and methods of manufacturing the same |
| KR900004783B1 (en) * | 1987-07-01 | 1990-07-05 | 가와사끼 쥬고교 주식회사 | Two kind material layer and preparing method |
| US4900637A (en) * | 1988-10-07 | 1990-02-13 | Aluminum Company Of America | Tag for labeling an article cast from molten material, method therefore and article |
| MY108416A (en) * | 1991-04-15 | 1996-09-30 | Akebono Brake Ind | An integrated backing plate for a drum brake |
| US5328776A (en) * | 1993-01-04 | 1994-07-12 | Michail Garber | Abrasion and impact resistant composite castings and wear resistant surface provided therewith |
| GB9304528D0 (en) * | 1993-03-05 | 1993-04-21 | T & N Technology Ltd | Piston with cavity |
| GB9515926D0 (en) * | 1995-08-03 | 1995-10-04 | T & N Technology Ltd | Manufacture of brake pads |
| DE19654893C2 (en) * | 1996-07-25 | 1999-06-10 | Federal Mogul Burscheid Gmbh | Piston rings of internal combustion engines made of a cast iron alloy |
| DE19813430B4 (en) * | 1997-03-29 | 2010-10-21 | Alcan Deutschland Gmbh | Composite cast piston and method for its production |
| DE19810883A1 (en) * | 1998-03-13 | 1999-09-16 | Ks Kolbenschmidt Gmbh | Light metal piston for directly injected internal combustion engines |
| ES2209813T3 (en) * | 1999-01-25 | 2004-07-01 | Ecosynthetix Inc. | BIOPOLIMEROS NANOPARTICLES. |
| US6116328A (en) * | 1999-07-29 | 2000-09-12 | The United States Of America As Represented By The Secretary Of The Navy | Fabrication of tile reinforced composite armor casting |
| US6360710B1 (en) * | 2000-12-08 | 2002-03-26 | Howard W. Christenson | Rocket piston internal combustion engine |
| US20060021729A1 (en) * | 2004-07-29 | 2006-02-02 | 3M Innovative Properties Company | Metal matrix composites, and methods for making the same |
| US20060024490A1 (en) * | 2004-07-29 | 2006-02-02 | 3M Innovative Properties Company | Metal matrix composites, and methods for making the same |
| US20060024489A1 (en) * | 2004-07-29 | 2006-02-02 | 3M Innovative Properties Company | Metal matrix composites, and methods for making the same |
| US20130219687A1 (en) * | 2010-03-23 | 2013-08-29 | Chin-Han Wang | Fastening method |
| US8974725B2 (en) | 2011-09-29 | 2015-03-10 | Federal-Mogul Products, Inc. | Friction material tooling |
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| GB1567328A (en) * | 1975-09-30 | 1980-05-14 | Honda Motor Co Ltd | Method for producttion of fibre-reinforced composite material |
| GB1598585A (en) * | 1978-05-03 | 1981-09-23 | Wellworthy Ltd | Pistons |
| EP0075052A1 (en) * | 1981-09-22 | 1983-03-30 | Ae Plc | Pistons |
| GB2106433A (en) * | 1981-09-22 | 1983-04-13 | Ae Plc | Squeeze casting of pistons |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1228049A (en) * | 1916-07-10 | 1917-05-29 | George R Rich | Piston for internal-combustion engines. |
| US1482778A (en) * | 1922-08-03 | 1924-02-05 | Bowmar Gershon | Insulating head for pistons |
| US1568835A (en) * | 1924-03-13 | 1926-01-05 | Jr John B Hawley | Internal-combustion engine |
| US2057560A (en) * | 1934-06-01 | 1936-10-13 | Gen Electric | Combustion engine piston and the like |
| US2262074A (en) * | 1938-07-13 | 1941-11-11 | Cleveland Trust Co | Piston and process of making |
| CH228280A (en) * | 1942-05-04 | 1943-08-15 | Gmbh Karl Schmidt | Light metal pistons for internal combustion engines. |
| GB807633A (en) * | 1956-11-26 | 1959-01-21 | Wendell Chester Cheney | Piston with head insert and process of making it |
| FR1574352A (en) * | 1967-07-15 | 1969-07-11 | ||
| DE1814123A1 (en) * | 1968-12-12 | 1971-03-11 | Maschf Augsburg Nuernberg Ag | Method and device for cooling an internal combustion engine piston |
| US4137887A (en) * | 1976-06-11 | 1979-02-06 | Perkins Engines Limited | Pistons for internal combustion engines |
| GB2060130B (en) * | 1979-04-07 | 1982-10-13 | Massey Ferguson Perkins Ltd | Pistons |
| DE3005082A1 (en) * | 1980-02-12 | 1981-08-20 | Karl Schmidt Gmbh, 7107 Neckarsulm | LIGHT METAL PISTON |
| GB2090779B (en) * | 1981-01-13 | 1984-12-19 | Imp Clevite Inc | Wear resistant insert for cast lightweight pistons and method of casting |
| IN155115B (en) * | 1981-01-13 | 1985-01-05 | Imp Clevite Inc | |
| US4404262A (en) * | 1981-08-03 | 1983-09-13 | International Harvester Co. | Composite metallic and refractory article and method of manufacturing the article |
-
1984
- 1984-01-31 GB GB08402516A patent/GB2135222B/en not_active Expired
- 1984-02-02 DE DE8484300643T patent/DE3465910D1/en not_active Expired
- 1984-02-02 EP EP84300643A patent/EP0118204B1/en not_active Expired
- 1984-02-03 CA CA000446744A patent/CA1250200A/en not_active Expired
- 1984-02-03 US US06/576,556 patent/US4599772A/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB948252A (en) * | 1962-08-16 | 1964-01-29 | Marshall George Whitfield | Improvements in or relating to pistons for internal combustion engines |
| GB1044596A (en) * | 1964-03-11 | 1966-10-05 | Hermann Mahle | Improvements in or relating to pistons |
| GB1567328A (en) * | 1975-09-30 | 1980-05-14 | Honda Motor Co Ltd | Method for producttion of fibre-reinforced composite material |
| GB1533512A (en) * | 1976-09-01 | 1978-11-29 | Mahle Gmbh | Pistons |
| GB1598585A (en) * | 1978-05-03 | 1981-09-23 | Wellworthy Ltd | Pistons |
| EP0075052A1 (en) * | 1981-09-22 | 1983-03-30 | Ae Plc | Pistons |
| GB2106433A (en) * | 1981-09-22 | 1983-04-13 | Ae Plc | Squeeze casting of pistons |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2188123A (en) * | 1986-03-22 | 1987-09-23 | Kloeckner Humboldt Deutz Ag | Thermally insulated piston |
| GB2188123B (en) * | 1986-03-22 | 1989-11-15 | Kloeckner Humboldt Deutz Ag | A thermally insulated piston |
| GB2313564A (en) * | 1996-05-31 | 1997-12-03 | Hitachi Metals Ltd | Aluminium alloy member with insert provided therein possessing improved damping capacity |
| GB2313564B (en) * | 1996-05-31 | 1998-08-05 | Hitachi Metals Ltd | Aluminum alloy member, with insert provided therein, possessing improved damping capacity and process for producing the same |
| US5976709A (en) * | 1996-05-31 | 1999-11-02 | Hitachi Kinzoku Kabushiki Kaisha | Aluminum alloy member, with insert provided therein, possessing improved damping capacity and process for producing the same |
| CN106567786A (en) * | 2016-11-04 | 2017-04-19 | 湖南江滨机器（集团）有限责任公司 | Piston and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8402516D0 (en) | 1984-03-07 |
| CA1250200A (en) | 1989-02-21 |
| US4599772A (en) | 1986-07-15 |
| EP0118204B1 (en) | 1987-09-09 |
| EP0118204A1 (en) | 1984-09-12 |
| DE3465910D1 (en) | 1987-10-15 |
| GB2135222B (en) | 1987-11-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19930131 |