WO2009049653A1 - Schmierölversorgung des pleuelgleitlagers einer teilwälzgelagerten, einteiligen kurbelwelle mit geteilten hauptlagern - Google Patents
Schmierölversorgung des pleuelgleitlagers einer teilwälzgelagerten, einteiligen kurbelwelle mit geteilten hauptlagern Download PDFInfo
- Publication number
- WO2009049653A1 WO2009049653A1 PCT/EP2007/009118 EP2007009118W WO2009049653A1 WO 2009049653 A1 WO2009049653 A1 WO 2009049653A1 EP 2007009118 W EP2007009118 W EP 2007009118W WO 2009049653 A1 WO2009049653 A1 WO 2009049653A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- crankshaft
- bearing
- arrangement according
- oil
- crank
- Prior art date
Links
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
- F16C3/14—Features relating to lubrication
Definitions
- the invention relates to an arrangement for lubricating oil supply for an internal combustion engine, with a crankcase with a pressurized oil supply to the bearings of the crankshaft main bearings, in particular with a roller bearing crankshaft, comprising a crankshaft with a plurality of main journals and crank webs and at least one between two crank webs crank pin on which Connecting rod is to be arranged.
- the oil supply of the connecting rod usually takes place through connecting holes from the main journals through the crank webs to the crankpin bearing the conrod bearings, the main bearing itself from the camp chairs out with Be supplied with pressure oil.
- the connecting rod bearings are usually supplied via catching rings mounted on the associated crank webs, which are also called slinger rings, and form an oil scavenging groove with an undercut formed radially outwards.
- the collecting volume of the oil-collecting grooves must necessarily be at a smaller radius than the crankpins, with respect to the longitudinal axis of the crankshaft.
- the oil from the ⁇ lfangrillen is conveyed through inner channels to the crank pin.
- Catch rings in the form of attachments are in principle only for mounting on main journals in axia- ler end position can be used on the crankshaft, but hardly on main journal, which lie between two crank webs. It lacks the required axial space.
- crankshaft main bearing over supplied in a pocket in the crankcase spray oil in the form of drip oil, while the connecting rod bearing is supplied via a designed as an attachment slinger with pressure oil that is discharged from the main bearings as drip oil and collected by the slinger and centrifugal forces for Hub pin is promoted.
- the quality of the lubricating oil supply of the connecting rod bearing is very uncertain, especially at low engine speeds with low spray oil quantities. Oil components flowing along the crankcase inner walls can pass the slinger. The slinger requires axially additional space.
- crankshafts with roller bearings main bearing journal in the center allow an axially short construction of the crankshaft.
- crankshafts with roller bearings main bearing journal in the center but in principle is also an applicability to crankshafts with plain bearings main bearing pin can not be excluded.
- the secure lubricating oil supply the connecting rod bearings should be given especially at low speeds.
- the solution consists in an arrangement for lubricating oil supply for an internal combustion engine with a pressure oil supply to the bearing blocks of the crankshaft main bearing, in particular with main bearing journal bearing journals of the crankshaft, comprising a crankshaft having a plurality of journal journals and crank webs and at least one crank pin between two crank webs on which a connecting rod is to be arranged, wherein lubricating oil supply means for a connecting rod bearing on said crank pin concentric with an adjacent main journal on a Crankshaft arranged oil catching groove and outgoing from this inner channels in the crank arm and in the crank pin to the connecting rod bearing, as well as arranged in the crankcase ⁇ lzubuchdüse, the outlet opening opens within the ⁇ lfangrille.
- the oil feed nozzle according to the invention which does not have to be formed as a spray nozzle due to the favorable position of its oil outlet, can be arranged in a fixed crankcase intermediate wall or in a separate insertable into the crankcase bearing block.
- the oil-collecting groove is designed as a recessed annular groove in the crank web.
- the outlet opening of the oil-feeding nozzle lies within the oil-collecting groove.
- Another embodiment is the fact that is formed in the ⁇ lfangrille of an undivided on the crankshaft auffädelbaren mountable on the crank arm catching ring.
- the ⁇ lfangrille is formed as a recess in the crankshaft or within a mounted catching ring, it is provided in each case that it has an opening for ⁇ lzuschreibdüse lateral annular opening and from this starting an annular space with radially outwardly extended undercut as a collecting space, in which Already at low crankshaft speed can form a stable liquid ring.
- the oil production from the oil supply nozzle can already be used before starting the internal combustion engine.
- the bore is introduced as a stepped bore with two diameter stages of the ⁇ lfangrille opposite to the crank pin lying crank web starting and is closed at the end with a plug, wherein a Hubzapfen from introduced radial transverse bore is connected to the bore.
- a Hubzapfen from introduced radial transverse bore is connected to the bore.
- the opening of the transverse bore on the crank pin is preferably axially centered.
- the circumferential position of the transverse bore on the crank pin In relation to a radial jet through the crankshaft axis and the lifting pin axis in the direction of rotation of the crankshaft, this should be preceded by a circumferential angle of 45 to 60 ° on the crank pin. As will be described in detail later, this is the most favorable circumferential position with respect to the pressure conditions and gap dimensions in the connecting rod bearing which change periodically during operation of an internal combustion engine.
- a bearing upper shell of the connecting rod bearing should be smooth inside cylin- drical and a bearing base shell with a straight joint which has just been split should contain a central groove into which the transverse bore emerges.
- the elastically einfedbaren in the crankcase intermediate wall or in the bearing block ⁇ lzuschreibdüse comprises a bush-shaped nozzle housing and guided therein a bush-shaped nozzle body, which are resiliently supported by a compression spring against each other and which are axially secured against each other.
- the nozzle housing and / or the nozzle body are made of brass or plastic. stand.
- the material and the material thickness should be selected so that no damage occurs during disassembly of the crankshaft.
- the oil scavenger groove in the region of the impact of the oil supply falls radially outward.
- the nozzle body may be in sliding contact with a suitable material with the ⁇ lfangrille. Both measures prevent that a back splash occurs at the point of impact of the oil supply.
- the oil feed nozzle is to be connected to inner lubricating oil supply channels in the corresponding crankcase intermediate wall or in the bearing block component.
- the invention is particularly suitable for internal combustion engines with main bearings of the crankshaft mounted on rollers.
- the rolling elements can in this case run directly on the main journal of the crankshaft and in the bearing bores in the bearing blocks, which simplifies assembly.
- Figure 1 shows an isometric oblique view of a crank mechanism according to the invention as a partial view.
- FIG. 2 shows the crank mechanism according to FIG. 1
- Figure 3 shows a crank mechanism according to the invention according to Figures 1 and 2, but without connecting rod
- FIG. 4 shows the crankshaft of a crank mechanism according to the invention as a detail
- Figure 5 shows a connecting rod of a crank mechanism according to the invention as a detail in the isometric oblique representation
- FIG. 6 shows a lower bearing part of a crank mechanism according to the invention according to FIGS. 1 and 2 as a detail in an isometric oblique representation.
- Figure 7 shows a crank mechanism according to the invention in a side view during assembly of a bearing block base.
- crankshaft 11 shows a crankshaft 11 according to the invention for a crankshaft 12 of a three-cylinder internal combustion engine, in the representation of five crank webs 22-26 with cast counterweights, two of three main journal pins 28, 29, 30 and two of three crank pins 14, 15, 16 are visible and a connecting rod 17 and a bearing block 13 are shown for one of the main camp.
- the connecting rod 17 is arranged, at which the upper connecting rod 18 and the connecting rod bearing cap 19 are designated separately.
- Pleuellagerschrauben are not shown in all figures.
- the already mentioned bearing block 13 comprises a Lagerstuhloberteil 20, which in a Kur- belgeophuse is or is part of a crankcase intermediate wall, and a bearing block base 21 which is to be bolted directly to the Lagerstuhloberteil 20.
- a molded catch tray 34 can be seen, which will be discussed later in more detail.
- additional storage chairs are to be provided on the main bearings 28, 30, as well as to arrange further connecting rods on the crank pins 14, 16.
- crank mechanism according to the invention is shown in Figure 1, wherein the same details are given the same reference numerals and additionally recognizable details are described in addition below.
- On the crankshaft 12 in addition to the first main journal 28, an end-side main peg 30 can be seen, while a central main journal 29 is equipped with a roller bearing 31.
- a roller bearing 31 In addition, here in cross-section of the equipped with the connecting rod 17 crank pin 15 and in view of the third crank pin 16 can be seen.
- Tp the parting line between the connecting rod 17 and connecting rod bearing cap 19
- the bearing block 13 the parting line between Lagerstuhloberteil 20 and Lagerbisunterteil 21 is designated T L.
- the integrally formed catching cup 34 on the crank cheek 24 faces an asymmetrical catching tray 35, both of which are circularly delimited with respect to the crankshaft axis A. Both have a small thickness than the respective crank webs.
- concentric oil-collecting grooves 36, 37 can be seen in the crank webs 24, 25, which each face the bearing block 13.
- the ⁇ lfangrille 36 extends through the catch pockets 34, 35, while corresponding catch pockets are covered on the crank arm 25 from the bearing block 14.
- oil supply nozzles 38, 39 are arranged in each case in association with the ⁇ lfangrillen 36, which protrude into the ⁇ lfangrillen.
- the oil supply nozzles 38, 39 are supplied by a supply bore 40 in the bearing seat base 21, through which lubricating oil is supplied to the oil supply nozzles 38, 39.
- the connecting hole 56 is in the position shown at the top dead center of the crank pin 15 and the connecting rod 17 in a smallest possible angle ⁇ 45 °, preferably about 30 ° to the parting line T p to arrange so that they are as far away from a zone of maximum load in the conrod bearing shell is located.
- the connecting bore 56 Due to the proximity of the connecting bore 56 to the parting line T p of the connecting rod 17, based on the position shown here of the connecting rod 17 at top dead center, the connecting bore 56 still passes while standing up high gas forces in the working cycle to the connecting rod bearing lower shell 44 with its central groove 45. Solange the connecting bore 56 is connected to the central groove 45, namely ideally between 20 and 30 ° crank angle after top dead center to between 20 and 30 ° crank angle to bottom dead center, at the parting line Tp sufficient oil to supply the connecting rod bearing shell 43 can be nachge felicitt without the middle groove 45 empties. As soon as the connecting bore 56 has reached the connecting rod bearing upper shell 43, the center groove 45 continues to serve as a lubricating oil reserve, inter alia also for the region of the parting line T p .
- the construction of the ⁇ lzu Fooddüse 38 is now explained, which includes a pressed into a bore in the bearing block base 21 sleeve-shaped nozzle housing 46 and a guided therein also sleeve-shaped nozzle body 47, which are supported by a compression spring 48 together, the nozzle body 47 einfederbar in Nozzle housing 46 is guided.
- a spacer bushing 49 limits the maximum rebounding of the nozzle body 47 into the oil scavenging groove 36.
- the nozzle body 47 has to be deflected so far that it can exit completely from the oil scavenger groove 36.
- the nozzle housing 46 has a central inlet bore 50, which is supplied with pressurized oil from a transverse bore 60 in the bearing block, while the nozzle body 47 has a large oil outlet opening 51, from the lubricating oil can be transferred into the ⁇ lfangrille 36.
- the ⁇ lfangrille 36 has a radially inner inclined wall to which the spray nozzle is directed, and an approximately parallel outer inclined wall, which thus forms an undercut annulus as a collection chamber within the ⁇ lfangril- Ie 36, from the under centrifugal force with rotating crankshaft oil to the outer surface the crank arm can drain. Instead, oil under pressure is introduced into the stepped bore 52 connected to the oil-collecting groove and from there into the feed bore
- a setting of the stepped bores 52, 53 which is in the same direction in relation to a direction of rotation of the crankshaft, can be seen with respect to the longitudinal axis A of the crankshaft.
- the stepped bore 52 is closed at the large end with a plug 54. Furthermore, it can be seen that the stepped bore 52 rises at an angle between 20 and 30 ° to the longitudinal axis of the crankshaft through the crank arm 24 in the crank pin 15.
- FIG. 4 shows further details on the crankshaft 12 shown here in detail. The same details are provided with the same reference numerals as in the preceding figures.
- the main bearing journals 28, 29 and 30 and the crank pins 14, 15 and 16 are mutually recognizable in their arrangement in longitudinal section.
- the crank webs 22, 23, 24, 25, 26 can be seen with integrally formed counterweights.
- the ⁇ lfangrillen 38, 39 are shown exclusively on the crank webs 24, 25, as well as the extended end portions 58 and 59 of the stepped bores 52, 53 in the crank pins 15, 16, in which oil sludge can settle.
- crank web 22 On the crank web 22, a corresponding ⁇ lfangrille and a corresponding stepped bore could be provided with transverse bore for the supply of the crank pin 14, which are not shown here.
- the stepped bore 52 viewed in axial view, is tangentially connected to the oil-collecting groove 38.
- a left-handed crankshaft is assumed, so that in the stepped bore 52 a dynamic pressure arises against the rotation of the crankshaft.
- the course of the oil scavenger groove 38 through the catch pockets 34, 35 can be seen here.
- the connecting rod is shown in an oblique view, with all recognizable details are already addressed before.
- the connecting rod comprises the connecting rod 17, the upper connecting rod eye 18 and the connecting rod bearing cap 19, wherein also here no Verschraubungsstoff between the rod and the connecting rod bearing cap are shown.
- the lower bearing shell 44 of the connecting rod bearing 42 can detect the central groove 45. Furthermore, it is clear that the bearing upper shell 43 has a smooth cylindrical sliding surface.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2007/009118 WO2009049653A1 (de) | 2007-10-20 | 2007-10-20 | Schmierölversorgung des pleuelgleitlagers einer teilwälzgelagerten, einteiligen kurbelwelle mit geteilten hauptlagern |
DE112007003650T DE112007003650A5 (de) | 2007-10-20 | 2007-10-20 | Schmierölversorgung des Pleuelgleitlagers einer teilwälzgelagerten, einteiligen Kurbelwelle mit geteilten Hauptlagern |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2007/009118 WO2009049653A1 (de) | 2007-10-20 | 2007-10-20 | Schmierölversorgung des pleuelgleitlagers einer teilwälzgelagerten, einteiligen kurbelwelle mit geteilten hauptlagern |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009049653A1 true WO2009049653A1 (de) | 2009-04-23 |
Family
ID=39636778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/009118 WO2009049653A1 (de) | 2007-10-20 | 2007-10-20 | Schmierölversorgung des pleuelgleitlagers einer teilwälzgelagerten, einteiligen kurbelwelle mit geteilten hauptlagern |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112007003650A5 (de) |
WO (1) | WO2009049653A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011014310A1 (de) * | 2011-03-18 | 2012-09-20 | Volkswagen Aktiengesellschaft | Leichtbau-Kurbelwelle |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1051063B (de) * | 1956-01-27 | 1959-02-19 | Farymann Diesel | Schmierung des Triebwerkes in Brennkraftmaschinen |
-
2007
- 2007-10-20 WO PCT/EP2007/009118 patent/WO2009049653A1/de active Application Filing
- 2007-10-20 DE DE112007003650T patent/DE112007003650A5/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1051063B (de) * | 1956-01-27 | 1959-02-19 | Farymann Diesel | Schmierung des Triebwerkes in Brennkraftmaschinen |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011014310A1 (de) * | 2011-03-18 | 2012-09-20 | Volkswagen Aktiengesellschaft | Leichtbau-Kurbelwelle |
Also Published As
Publication number | Publication date |
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DE112007003650A5 (de) | 2010-11-04 |
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