GB2041492A - Cylinders liners; joint-making packing - Google Patents
Cylinders liners; joint-making packing Download PDFInfo
- Publication number
- GB2041492A GB2041492A GB7927814A GB7927814A GB2041492A GB 2041492 A GB2041492 A GB 2041492A GB 7927814 A GB7927814 A GB 7927814A GB 7927814 A GB7927814 A GB 7927814A GB 2041492 A GB2041492 A GB 2041492A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sealant
- cured
- resin
- cylinder liner
- layer
- 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
- 238000012856 packing Methods 0.000 title 1
- 239000000565 sealant Substances 0.000 claims abstract description 23
- 229920002050 silicone resin Polymers 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims description 24
- 239000011347 resin Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 239000011324 bead Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 17
- 239000000498 cooling water Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000007789 sealing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000000873 masking effect Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- BRWZYZWZBMGMMG-UHFFFAOYSA-J dodecanoate tin(4+) Chemical compound [Sn+4].CCCCCCCCCCCC([O-])=O.CCCCCCCCCCCC([O-])=O.CCCCCCCCCCCC([O-])=O.CCCCCCCCCCCC([O-])=O BRWZYZWZBMGMMG-UHFFFAOYSA-J 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- QEVHRUUCFGRFIF-MDEJGZGSSA-N reserpine Chemical compound O([C@H]1[C@@H]([C@H]([C@H]2C[C@@H]3C4=C(C5=CC=C(OC)C=C5N4)CCN3C[C@H]2C1)C(=O)OC)OC)C(=O)C1=CC(OC)=C(OC)C(OC)=C1 QEVHRUUCFGRFIF-MDEJGZGSSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- -1 tin laurate Chemical class 0.000 description 1
Classifications
-
- 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
- F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
- F16J10/02—Cylinders designed to receive moving pistons or plungers
- F16J10/04—Running faces; Liners
-
- 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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/16—Cylinder liners of wet type
-
- 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
- F02F11/00—Arrangements of sealings in combustion engines
- F02F11/005—Arrangements of sealings in combustion engines involving cylinder liners
-
- 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
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
-
- 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
Abstract
A cylinder liner 10 for liquid-cooled engines has a bandlike sealant A on the outer-surface thereof wherein the sealant is formed by a two-layer laminate of silicone resin having a completely cured inner layer 11 and a half-cured outer layer 16. When mounted, Fig. 5, the outer layer 16 forms a bead B which is cured by heat of engine operation. <IMAGE>
Description
SPECIFICATION
Improvements in and relating to cylinder liners for liquid-cooled engines
This invention relates to a cylinder liner for liquid-cooled engines, on the outer-surface of which, a bandlike sealant is applied, and a method of making same. More particularly, it relates to a sealant-banded cylinder liner wherein said sealant comprises two-layer laminate of completely cured and half cured silicone resins, and a method of making same.
As shown in Fig. 1, in liquid-cooled engines such as diesel engines, a cylinder liner 3 is generally inserted into a cylinder bore 2 of a cylinder block 1 so as to form a water jacket 4 for cooling water between the block 1 and the liner 3. In such engines, two O-rings 6 and 6' are set in recesses on a protrudent wall 5 of the cylinder bore 2 and they seal the water jacket to prevent leaking of cooling water into an oil pan (not shown).
The cylinder liner 3 of such engines tends to bulge due to the combustion pressure of fuels during its operation, or vibrate intricately in the cylinder bore 2 due to reciprocating mortions of pistons. Then, cavitations give rise in the cooling water of the water jacket 4, which lead fatigue failures of the liner 3 and accelerate its corrosion. If the cylinder liner 3 is corroded markedly, it shows poor mechanical strength and short lifetime. Especially, the narrower a clearance 7 between the protrudent wall 5 in the bore 2 and the cylinder liner 3 is, the more cavitations occure. Hence, it is corroded severely.
Further, O-rings 6 and 6' are worn out by vibrations of the cylinder liner 3, and then the cooling water in the water jacket 4 possibly soaks into the oil pan or a crunk case (not shown).
Heretofore, a sealant 8 (Fig. 2) such as synthetic resins, in addition to these O-rings, has been filled into the clearance 7 around its entrance part to prevent cavitations and the cooling water leakage, in order to improve above mentioned disadvantages. In such prior art, for example, a sealant is forced into a channel (not shown) slotted on the outer surface of the liner 3, or is sprayed onto the inner surface of the cylinder block 1 to form a sealant band thereon by means of an air-gun.
However, according to these methods, it takes longer time to apply the sealant or it is difficult to obtain sufficient adherence between the sealant and the cylinder block or the cylinder liner. Thus, desirable sealing effects can not be attained by these known methods.
SUMMARY OF THE INVENTION
Accordingly, it is an object of this invention to provide an improved cylinder liner in which a special sealant is applied on the outersurface thereof to seal faultlessly around an entrance part of a clearance formed between the cylinder surface and the protrudent wall of the cylinder block.
Another object of this invention is to provide an improved method of making above mentioned cylinder liner.
According to this invention, these and other objects can be accomplished by providing a cylinder liner for liquid-cooled engines having a bandlike sealant on the outer-surface thereof wherein said sealant is formed by a two-layer laminate of silicone resin having a completely cured inner layer adhered on the outer surface of the cylinder liner and a half-cured outer layer laminated thereon, and furthermore, a method for preparing a cylinder liner for liquid-cooled engines having a bandlike sealant on the outer-surface thereof which comprises coating a putty silicone resin on the outersurface of said cylinder liner to form a beltlike layer, curing said resin completely, further applying said resin on said completely cured resin, and half-curing said applied resin, thereby forming a two-layer laminate of silicone resin having a completely cured inner layer and a half-cured outer layer.
BRIEF DESCRIPTION OF DRAWINGS
Other objects and advantages will be apparent from the ensuing specification and drawings in which
Figures 1 and 2 are elevational views in section of known cylinder liners in liquid cooled engines.
Figure 3 is an elevational views in section of this invention.
Figure 4 is an expanded sectional view of the banded sealant of Fig. 3.
Figure 5 is an elevational view in section of a cylinder liner inserted in a cylinder bore.
DETAILED DESCRIPTION
Referring to the embodiment of this invention shown in Figs. 3 to 5 inclusive, a cylinder liner 10 is partly coated with a silicone resin on its outer-surface 1 0a to form a belt-like sealant layer A. Prior to this resin coating process, a sphere to be coated should be fixed on the outer surface 1 Oa of the liner 10, which corresponds to an entrance part 1 spa of a clearance 1 5 formed between the liner 10 and a protrudent wall 14 when the liner 10 is inserted into a cylinder bore 1 3 of cylinder block 1 2. The outer surface 1 Oa is then masked by means of a masking tape leaving the belt-like sphere unmasked, where a putty silicone resin is applied to a thickness of about 50 to 100 micron.
Such silicone resine is preferably an organopolysiloxane composition containing a hardener such as organotin compounds, i.e. tin laurate, a silane coupling agent for improving its adherence, and a platinum catalyst. Then, after stripping the masking tape, the putty silicone resin is heated to a temperature of about 1 20 C for 1 hour and cured to form a completely cured resin 11. Thus, the cylinder liner 10 is banded with the cured belt-like resin 11. The term "completely cured" means such an elastic state as gum.Then, the same silicone resin is further applied on the com pleteiy cured resin to a thickness of about 700 to 800 micron and cured to form a halfcured resin 1 6. The term "half-cured" means such state that the resin does not show any restoration by a finger pressure and yet it does not adhere to the finger. Such half-cured state may be obrained by standing the resin in the atmosphere at room temperature for 24 hours or more. Both of these completely cured and half-cured resins give a two-layer laminate
A in which two resins are strongly adhered each other. The laminate A is thicker than the clearance 15.
In Fig. 5, 1 7 and 18 are a water jacket and
O-rings respectively.
Thus, according to this invention, the sealant-banded cylinder liner for liquid-cooied engines, which is banded on the outer-surface of the cylinder liner, can be made by very simple process. While the sealing band comprises two-layer laminate of silicone resin, which consists of the inner layer of compretely cured resin 11 and the outer layer of half-cured resin 16, it exhibits excellent sealing effects.
This will be explained particularly with reference to Fig. 5. As first, the cylinder liner 10 is inserted into the cylinder bore 1 3 of the cylinder block 1 2. As the laminate A on the outer surface 1 Oa is thicker than the clearance 15, the surface of the half-cured resin 1 6 is scraped by the protrudent wall 14 and risen around the entrance part 1 spa when the liner 10 is inserted into the bore 13, thereby the entrance part 1 spa is sealed. On the other hand, the completely cured resin 11 has been completely cured and adhered firmly to the outer surface 1 Oa, therefore, it is not scraped nor risen.
The half-cured resin 1 6 is gradually cured by the cooling water heated in the water jacket 1 7 during operation and the two-layer laminate A forms a completely cured monolayer (sealant B). The sealant B adheres the cylinder liner 10 and the cylinder block 1 3 firmly. As the laminate A fills suitably around the entrance part 1 spa and is cured as it is, the resultant sealant B has an excellent sealing effect.
Further, because of excellent elasticity, vibration resistance, heat resistance and humidity resistance of the cured silicone resin due to its three-dimensional network, the sealant B can sufficiently withstand to vibrations of piston mortions or high combustion temperature of fuels to seal the clearance 1 5 effectively. When the sealant B is used in combination with O-rings 18, its sealing effect is more perfect.
As described above, the cylinder liner of this invention has the two-layer laminate consisting of the inner layer of completely cured resin and the outer layer of half-cured resin on the outer surface thereof, securing perfect sealing of the clearance between the outer surface of the cylinder liner and the protrudent wall of the cylinder block to prevent leakage of cooling water from the water jacket into the crunk room and to avoid possible occurrence of cavitations. Further, such cylinder liner can be obtained easily and rapidly by the method of this invention. Finally it is apparent that the cylinder liner herein described as well as the method of making same constitute an epock-making invention which overcomes disadvantages of prior arts.
Claims (3)
1. A cylinder liner for liquid-cooled engines having a bandlike sealant on the outersurface thereof wherein said sealant is formed by a two-layer laminate of silicone resin having a completely cured inner layer adhered on the outer-surface of said cylinder liner and a half-cured outer layer laminated thereon.
2. A method for preparing a cylinder liner for liquid-cooled engines having a bandlike sealant on the outer-surface thereof comprising coating a putty silicone resin on the outersurface of said cylinder liner to form a belt-like layer, curing said resin completely, further applying said resin on said completely cured resin, and half-curing said applied resin, thereby forming a two-layer laminate of silicone resin having a completely cured inner layer and a half-cured outer layer.
3. A method as claimed in claim 2 in which said silicone resin is a composition having mainly an organopoly siloxane therein.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1246379A JPS55104547A (en) | 1979-02-06 | 1979-02-06 | Cylinder liner for liquid cooled-type internal combustion engine wound by belt-shaped seal material on its external circumferential surface and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2041492A true GB2041492A (en) | 1980-09-10 |
| GB2041492B GB2041492B (en) | 1982-10-13 |
Family
ID=11806044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7927814A Expired GB2041492B (en) | 1979-02-06 | 1979-08-09 | Cylinder liners joint-making packing |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS55104547A (en) |
| BR (1) | BR7905713A (en) |
| DE (1) | DE2934319C2 (en) |
| FR (1) | FR2448632A1 (en) |
| GB (1) | GB2041492B (en) |
| IT (1) | IT1123583B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2526864A1 (en) * | 1982-05-17 | 1983-11-18 | Fiat Auto Spa | Engine rocker box seals of silicone rubber - self curing at ambient temps. and installed using compressible spacers to limit initial clamping forces |
| FR2591280A1 (en) * | 1985-12-11 | 1987-06-12 | Man Nutzfahrzeuge Gmbh | CYLINDER LINER FOR INTERNAL COMBUSTION ENGINE WITH ALTERNATIVE PISTON. |
| DE3910836A1 (en) * | 1989-04-04 | 1990-10-11 | Imo Ind Gmbh | DEVICE WITH A GASKET |
| WO2000005522A1 (en) * | 1998-07-21 | 2000-02-03 | Loctite Deutschland Gmbh | Method for producing a sealing between two engine parts, especially between an engine block and a cylinder head |
| EP1087124A2 (en) * | 1999-09-23 | 2001-03-28 | Bayerische Motoren Werke Aktiengesellschaft | Cylinder/crank case for a liquid cooled internal combustion engine |
| US9206763B2 (en) | 2013-05-24 | 2015-12-08 | Yamaha Hatsudoki Kabushiki Kaisha | Engine and straddle-type vehicle |
| WO2016059194A1 (en) * | 2014-10-16 | 2016-04-21 | Mahle Metal Leve S/A | Wet cylinder liner for internal combustion engines, process for obtaining a wet cylinder liner, and internal combustion engine |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3108412A1 (en) * | 1981-03-06 | 1982-09-23 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg | GASKET FOR WET CYLINDER RIFLES |
| JPS62135646A (en) * | 1985-12-09 | 1987-06-18 | Mitsubishi Motors Corp | Cylinder head made of aluminum alloy |
| JPH0484746U (en) * | 1990-11-29 | 1992-07-23 | ||
| DE4116652C1 (en) * | 1991-05-22 | 1992-06-25 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2783749A (en) * | 1954-04-19 | 1957-03-05 | Perfect Circle Corp | Cylinder block and liner construction and method of assembling the same |
| US2879115A (en) * | 1954-07-22 | 1959-03-24 | Gen Motors Corp | Non-metallic means for bonding materials together |
| US3018765A (en) * | 1959-09-15 | 1962-01-30 | Jr Alton Bayne Neild | Seal for engine cylinder liner |
| GB1078563A (en) * | 1963-03-28 | 1967-08-09 | Humber Ltd | Improvements in or relating to adhesively assembled articles |
| US3403661A (en) * | 1966-07-27 | 1968-10-01 | Cummins Engine Co Inc | Engine cylinder block and liner seal construction |
| GB1263507A (en) * | 1969-03-07 | 1972-02-09 | Sheepbridge Stokes Ltd | Improvements in or relating to methods of decreasing fretting between cylinder liners and their containing bores |
| FR2037725A5 (en) * | 1969-03-07 | 1970-12-31 | Sheepbridge Stokes Ltd | Non-stick cylinder linings for ic engines |
| DE2140378A1 (en) * | 1971-08-12 | 1973-02-15 | Porsche Kg | CYLINDER CRANKCASE OF COMBUSTION MACHINERY |
| JPS50129709U (en) * | 1974-04-15 | 1975-10-24 | ||
| JPS5815615B2 (en) * | 1975-10-27 | 1983-03-26 | 株式会社クボタ | rubber ring |
| DE2641404A1 (en) * | 1976-09-15 | 1978-03-16 | Kloeckner Humboldt Deutz Ag | WATER-COOLED PISTON ENGINE |
-
1979
- 1979-02-06 JP JP1246379A patent/JPS55104547A/en active Granted
- 1979-08-09 GB GB7927814A patent/GB2041492B/en not_active Expired
- 1979-08-24 DE DE2934319A patent/DE2934319C2/en not_active Expired
- 1979-09-03 FR FR7922015A patent/FR2448632A1/en active Granted
- 1979-09-05 BR BR7905713A patent/BR7905713A/en unknown
- 1979-09-10 IT IT25594/79A patent/IT1123583B/en active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2526864A1 (en) * | 1982-05-17 | 1983-11-18 | Fiat Auto Spa | Engine rocker box seals of silicone rubber - self curing at ambient temps. and installed using compressible spacers to limit initial clamping forces |
| FR2591280A1 (en) * | 1985-12-11 | 1987-06-12 | Man Nutzfahrzeuge Gmbh | CYLINDER LINER FOR INTERNAL COMBUSTION ENGINE WITH ALTERNATIVE PISTON. |
| DE3910836A1 (en) * | 1989-04-04 | 1990-10-11 | Imo Ind Gmbh | DEVICE WITH A GASKET |
| WO2000005522A1 (en) * | 1998-07-21 | 2000-02-03 | Loctite Deutschland Gmbh | Method for producing a sealing between two engine parts, especially between an engine block and a cylinder head |
| US6497413B1 (en) | 1998-07-21 | 2002-12-24 | Henkel Loctite Deutschland Gmbh | Method for producing a sealing between two engine parts, especially between an engine block and a cylinder head |
| EP1087124A2 (en) * | 1999-09-23 | 2001-03-28 | Bayerische Motoren Werke Aktiengesellschaft | Cylinder/crank case for a liquid cooled internal combustion engine |
| EP1087124A3 (en) * | 1999-09-23 | 2002-02-06 | Bayerische Motoren Werke Aktiengesellschaft | Cylinder/crank case for a liquid cooled internal combustion engine |
| US9206763B2 (en) | 2013-05-24 | 2015-12-08 | Yamaha Hatsudoki Kabushiki Kaisha | Engine and straddle-type vehicle |
| WO2016059194A1 (en) * | 2014-10-16 | 2016-04-21 | Mahle Metal Leve S/A | Wet cylinder liner for internal combustion engines, process for obtaining a wet cylinder liner, and internal combustion engine |
| US10247130B2 (en) | 2014-10-16 | 2019-04-02 | Mahle Metal Leve S/A | Wet cylinder liner for internal combustion engines, process for obtaining a wet cylinder liner, and internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2934319A1 (en) | 1980-08-07 |
| JPS55104547A (en) | 1980-08-11 |
| FR2448632B1 (en) | 1983-07-18 |
| DE2934319C2 (en) | 1983-11-24 |
| GB2041492B (en) | 1982-10-13 |
| BR7905713A (en) | 1980-10-14 |
| JPS6228301B2 (en) | 1987-06-19 |
| FR2448632A1 (en) | 1980-09-05 |
| IT7925594A0 (en) | 1979-09-10 |
| IT1123583B (en) | 1986-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |