GB2168109A - I.C. engine cylinder block and crankcase - Google Patents
I.C. engine cylinder block and crankcase Download PDFInfo
- Publication number
- GB2168109A GB2168109A GB08528263A GB8528263A GB2168109A GB 2168109 A GB2168109 A GB 2168109A GB 08528263 A GB08528263 A GB 08528263A GB 8528263 A GB8528263 A GB 8528263A GB 2168109 A GB2168109 A GB 2168109A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinder block
- cylinder
- block according
- housing
- bearing
- 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
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000005058 metal casting Methods 0.000 claims abstract description 6
- 239000004033 plastic Substances 0.000 claims abstract description 4
- 229920003023 plastic Polymers 0.000 claims abstract description 4
- 238000007531 graphite casting Methods 0.000 claims abstract description 3
- 239000004411 aluminium Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 229910001060 Gray iron Inorganic materials 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000002826 coolant Substances 0.000 description 2
- 150000002118 epoxides Chemical class 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
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
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
- F02F7/008—Sound insulation
-
- 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
- F02F7/0002—Cylinder arrangements
- F02F7/0004—Crankcases of one-cylinder engines
-
- 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
- F02F7/0002—Cylinder arrangements
- F02F7/0007—Crankcases of engines with cylinders in line
-
- 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
- F02F7/0043—Arrangements of mechanical drive elements
- F02F7/0053—Crankshaft bearings fitted in the crankcase
-
- 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
-
- 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
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0043—Arrangements of mechanical drive elements
- F02F7/0053—Crankshaft bearings fitted in the crankcase
- F02F2007/0056—Crankshaft bearings fitted in the crankcase using bearing beams, i.e. bearings interconnected by a beam or multiple beams
-
- 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
- F05C2201/0436—Iron
- F05C2201/0439—Cast iron
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
An I.C. engine is divided, structurally, into at least a cylinder housing (2), a crank shaft bearing bed (4), a bearing support (5), and a crank case (6). The materials from which each component part is made can be selected according to the respective stresses of the individual areas of these components. The cylinder housing (2) may be a light metal casting, the bearing bed (4) and/or the bearing support (5) may be a spherical graphite casting and the crank case (6) may be of plastics. <IMAGE>
Description
SPECIFICATION
Multi-part cylinder block
This invention relates to a multi-part cylinder block.
The cylinder blocks known in motor vehicle construction are for the most part cast in one piece with the upper part of the crankcase housing. As material, gray cast iron or light metal casting is used. These known cylinder blocks produced in one piece are sturdy and heavy in the case of gray cast iron, and substantially more expensive in the case of light metal casting.
The invention has therefore been developed with a view to provide a cylinder block which on the one hand offers considerable savings as regards weight, and on the other hand satisfies strength and rigidity requirements.
According to the invention there is provided a multi-part cylinder block for an internal combustion engine, in which the distribution of the block according to structural components parts is divided structurally, according to function and material, at least into a cylinder housing, a crank shaft bearing bed, a bearing support, and a crank case.
Two embodiments of multi-part engine cylinder block according to the invention will now be described in detail, by way of example only, with reference to the accompanying drawings, in which:
Figure 1 is a section through a first embodiment; and
Figure 2 is a section through another embodiment.
A fundamental feature of the proposed solution is the simple construction which is achieved by the separation of functions. This means that the (unitary construction) gray cast iron or light metal block used until now is replaced by a multi-part construction.
Referring to Fig. 1, a cylinder block has a cylinder housing 2 with cylinder linings 3 inserted. A bearing support 5 and a bearing bed 4 are connected to the cylinder housing 2.
A parting plane 8 runs transversely through the cylinder block 1 and separates the cylinder housing 2 from the bearing support 5. A cas
ing or crank case 6, which at the same time
is used as an oil sump, encloses the bearing support 6 and the bearing bed 4 and where
possible is secured to this in the upper third
of the cylinder housing 2. Thus, the crank
case 6 is connected to the cylinder housing 2 at a position spaced from the main parting
plane 8 and so as to overlap the parting plane
and a lower end portion of the cylinder hous
ing.
By appropriate selection of material for the
individual components several advantages are
achieved at the same time.
The functions necessary for operation of the
engine can be individually assigned for the individual areas of the cylinder block. This results in particular from the requirements which are set in individual areas of the cylinder block. Clearly defined and greatly limited functions correspond to the individual areas. For example the main function of the coolant casing area is.to seal. Further functions are to absorb forces and to prevent the reflection of noise. In contrast the two parts of the bearing only have to fulfill strength and rigidity functions. On the other hand, sealing and the prevention of noise reflection are the main purposes of the oil sump. This example of the decentralisation of functions shows that a function-based material selection is possible and sensible.
In the proposed solution, therefore, the cylinder block 2 is constructed as a light metal casting part, the bearing bed 4 and the bearing support 5 are produced in spheroidal graphite iron, and the casing 6, which at the same time forms a sound proofing is constructed as a plastics part, for example of glass fibre-reinforced polyamide or vinyl ester or epoxide resin. Sheet Moulding Components (SMC) made of unsaturated polyesters based on epoxide, or based on epoxy or epoxide of unsaturated polymers can also be used, and the plastics can be structured or honeycombed. The cylinder linings 3 can be made of gray cast iron.
As a variant, as shown in Fig. 2, a cylinder housing with linings in aluminium casting can also be considered, and the contact surfaces of the linings are treated according to the
Rheynoldsch process. The cylinder housing is a high silicon-containing aluminium alloy.
The proposed crankshaft bearing offers various advantages:
1. The selected material, spherical graphite casting, corresponds to the material of the crankshaft. This offers the advantage of the same heat expansion of the crankshaft and the shaft main bearing.
2. The division into two of the bearing into a bearing support and a bearing bed affords the advantage that the two components both connect the crank drive to the clutch housing.
They therefore absorb the supporting forces of the torque of the crankshaft ahd the forces of the motor holding means.
Because of the laterally open crankshaft bearing the oil sump is constructed to be laterally higher than was usual previousiy, so that this new type of casing can at the same time also fulfill the function of preventing the reflection of sound, and makes possible a heat exchange between the coolant and the motor coil.
Although not shown in detail, the bearing
bed and the bearing support are reinforced
like a frame at the top and at the bottom.
Also, oil supply bores are integrated in the
upper part of the bearing bed.
The realisation of the proposed solution pro duces a saving in weight of about 40% with respect to the known unitary gray cast iron block and about 20% with respect to a light metal casting block.
Claims (10)
1. A multi-part cylinder block for an internal combustion engine, in which the distribution of the block according to structural component parts is divided structurally, according to function and material, at least into a cylinder housing a crank shaft bearing bed, a bearing support, and a crank case.
2. A cylinder block according to claim 1, in which a respective material is associated with each component part and is adapted to suit the particular stress profile of the part, and in which the cylinder housing is made of a light metal casting, the bearing bed and/or the bearing support are made of a spherical graphite casting, and the crank case is made of plastics.
3. A cylinder block according to claim 1 or 2, in which a main parting plane perpendicularly intersects the longitudinal axis of the cylinder block.
4. A cylinder block according to claim 3, in which the main parting plane separates the cylinder housing and the bearing support.
5. A cylinder block according to claim 3 or 4, in which the crank case is connected to the cylinder housing at a position spaced from the main parting plane and so as to overlap the parting plane and a lower end portion of the cylinder housing.
6. A cylinder block according to any one of the preceding claims, in which the bearing bed and the bearing support are reinforced like a frame at the top and at the bottom.
7. A cylinder block according to any one of the preceding claims, in which oil supply bores are integrated in the upper part of the bearing bed.
8. A cylinder block according to any one of the preceding claims, in which a cylinder head, and the bearing bed, are joined in sealed manner by threaded fasteners to the cylinder housing.
9. A cylinder block according to claim 1, in which the cylinder housing is an aluminium casting, and the contact surfaces of cylinder linings mounted in the housing are treated according to the Rheynoldsch process.
10. A cylinder block according to claim 1 and substantially as hereinbefore described with reference to, and as shown in either of the embodiments illustrated in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH5690/84A CH671434A5 (en) | 1984-11-29 | 1984-11-29 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8528263D0 GB8528263D0 (en) | 1985-12-18 |
| GB2168109A true GB2168109A (en) | 1986-06-11 |
| GB2168109B GB2168109B (en) | 1988-09-21 |
Family
ID=4297754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08528263A Expired GB2168109B (en) | 1984-11-29 | 1985-11-15 | Multi-part engine assembly |
Country Status (6)
| Country | Link |
|---|---|
| CH (1) | CH671434A5 (en) |
| DE (1) | DE3538540A1 (en) |
| FR (1) | FR2573814B1 (en) |
| GB (1) | GB2168109B (en) |
| IT (1) | IT1186075B (en) |
| SE (1) | SE8505626L (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0599802A1 (en) * | 1992-11-20 | 1994-06-01 | Franz Dipl.Ing.Dr. Laimböck | Headcylinder with valve drive for combustion engine |
| CN101846009A (en) * | 2010-04-19 | 2010-09-29 | 黄宇 | Cylinder of internal-combustion engine and manufacturing method thereof |
| US7814879B2 (en) | 2008-04-23 | 2010-10-19 | Techtronic Outdoor Products Technology Limited | Monolithic block and valve train for a four-stroke engine |
| CN101545412B (en) * | 2009-05-15 | 2010-12-01 | 中国兵器工业集团第七○研究所 | Engine multi-oil channel split type machine body structure |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19831252C1 (en) * | 1998-07-11 | 1999-10-28 | Daimler Chrysler Ag | Crankcase construction for internal combustion engine |
| DE10032845A1 (en) * | 2000-07-06 | 2001-11-08 | Ks Aluminium Technologie Ag | Cylinder crankcase of internal combustion engine includes cylinder block section manufactured from wear-resistant hypereutectic aluminum-silicon-alloy and cast in low pressure, squeeze casting or pressure die casting process |
| DE102017005311A1 (en) | 2017-06-02 | 2017-11-30 | Daimler Ag | Cylinder crankcase for an internal combustion engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1040793A (en) * | 1964-04-10 | 1966-09-01 | British Aluminium Co Ltd | Improvements in or relating to internal combustion engines |
| GB1294766A (en) * | 1970-07-03 | 1972-11-01 | Birmid Qualcast Foundries Ltd | Internal combustion engine |
| GB2011998A (en) * | 1977-11-22 | 1979-07-18 | List H | Internal combustion engines |
| EP0089300A1 (en) * | 1982-03-16 | 1983-09-21 | RENAULT VEHICULES INDUSTRIELS Société dite: | Sound-dampened engine block |
| GB2140502A (en) * | 1983-05-25 | 1984-11-28 | Atomic Energy Authority Uk | An engine including fibre reinforced plastics |
| GB2147662A (en) * | 1983-10-07 | 1985-05-15 | Honda Motor Co Ltd | I.c. engine cylinder block |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6320847Y2 (en) * | 1980-04-21 | 1988-06-09 | ||
| DE3121605A1 (en) * | 1980-06-16 | 1982-03-04 | List, Hans, Prof. Dipl.-Ing. Dr.Dr.h.c., Graz | Multicylinder internal combustion engine |
| DE3043173A1 (en) * | 1980-11-15 | 1982-07-01 | Klöckner-Humboldt-Deutz AG, 5000 Köln | IC engine with detachably mounted cylinders and/or heads - are fixed by tie rods in crankshaft bearing caps, each cap holding tie rods of adjacent cylinders |
-
1984
- 1984-11-29 CH CH5690/84A patent/CH671434A5/de not_active IP Right Cessation
-
1985
- 1985-10-30 DE DE19853538540 patent/DE3538540A1/en not_active Withdrawn
- 1985-11-14 IT IT22837/85A patent/IT1186075B/en active
- 1985-11-15 GB GB08528263A patent/GB2168109B/en not_active Expired
- 1985-11-27 FR FR858517545A patent/FR2573814B1/en not_active Expired - Fee Related
- 1985-11-28 SE SE8505626A patent/SE8505626L/en not_active Application Discontinuation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1040793A (en) * | 1964-04-10 | 1966-09-01 | British Aluminium Co Ltd | Improvements in or relating to internal combustion engines |
| GB1294766A (en) * | 1970-07-03 | 1972-11-01 | Birmid Qualcast Foundries Ltd | Internal combustion engine |
| GB2011998A (en) * | 1977-11-22 | 1979-07-18 | List H | Internal combustion engines |
| EP0089300A1 (en) * | 1982-03-16 | 1983-09-21 | RENAULT VEHICULES INDUSTRIELS Société dite: | Sound-dampened engine block |
| GB2140502A (en) * | 1983-05-25 | 1984-11-28 | Atomic Energy Authority Uk | An engine including fibre reinforced plastics |
| GB2147662A (en) * | 1983-10-07 | 1985-05-15 | Honda Motor Co Ltd | I.c. engine cylinder block |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0599802A1 (en) * | 1992-11-20 | 1994-06-01 | Franz Dipl.Ing.Dr. Laimböck | Headcylinder with valve drive for combustion engine |
| US7814879B2 (en) | 2008-04-23 | 2010-10-19 | Techtronic Outdoor Products Technology Limited | Monolithic block and valve train for a four-stroke engine |
| CN101545412B (en) * | 2009-05-15 | 2010-12-01 | 中国兵器工业集团第七○研究所 | Engine multi-oil channel split type machine body structure |
| CN101846009A (en) * | 2010-04-19 | 2010-09-29 | 黄宇 | Cylinder of internal-combustion engine and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CH671434A5 (en) | 1989-08-31 |
| DE3538540A1 (en) | 1986-06-05 |
| SE8505626D0 (en) | 1985-11-28 |
| FR2573814A1 (en) | 1986-05-30 |
| FR2573814B1 (en) | 1992-01-03 |
| GB8528263D0 (en) | 1985-12-18 |
| IT1186075B (en) | 1987-11-18 |
| IT8522837A0 (en) | 1985-11-14 |
| SE8505626L (en) | 1986-05-30 |
| GB2168109B (en) | 1988-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19921115 |