EP3283739A1 - Dispositif anti-barbotage d'un vilebrequin - Google Patents
Dispositif anti-barbotage d'un vilebrequinInfo
- Publication number
- EP3283739A1 EP3283739A1 EP16713533.4A EP16713533A EP3283739A1 EP 3283739 A1 EP3283739 A1 EP 3283739A1 EP 16713533 A EP16713533 A EP 16713533A EP 3283739 A1 EP3283739 A1 EP 3283739A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oil
- engine
- crankshaft
- compartment
- discharge
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/0004—Oilsumps
- F01M2011/0033—Oilsumps with special means for guiding the return of oil into the sump
Definitions
- the present invention relates to an anti-bubbling device of a crankshaft included in an internal combustion engine.
- the invention also relates to an internal combustion engine comprising such an anti-bubbling device and a motor vehicle comprising such a motor.
- the invention also relates to a method of operation of the anti-bubbling device.
- an internal combustion engine of a motor vehicle comprises a crankcase inside which are arranged moving parts such as a crankshaft, crankshaft bearings, connecting rods, pistons or a camshaft.
- the crankcase is assembled with an oil sump forming an envelope placed under the engine used in particular for storing the engine lubricating oil.
- This engine is provided with a lubrication circuit conventionally comprising a pump driven by the crankshaft.
- This pump is designed to suck the oil stored in the oil sump in order to be filtered and then transmitted to the moving parts of the engine, the oil then returning by gravity to the sump and through the pipes. appropriate.
- Such a motor has the disadvantage of having during its operation power losses resulting from a splashing of the crankshaft and in particular of the crankshaft counterweight in a sheet of oil contained in the oil sump. Moreover, when the vehicle is in motion, such a splash of the crankshaft is accentuated by the displacement of the oil in the oil sump.
- the present invention aims to overcome such drawbacks related to internal combustion engines of the state of the art.
- the present invention makes it possible to reduce friction losses of an internal combustion engine, in particular by the friction of the counterweights of the crankshaft in an oil slick contained in the oil sump.
- the anti-bubbling device of a crankshaft included in an internal combustion engine comprises:
- an element for separating an oil sump from the engine into first and second compartments which is capable of collecting engine lubricating oil from moving parts of the engine
- the anti-splash device is defined in the oil sump as well as in a crankcase of the engine;
- the discharge element comprises a receiving element corresponding to a first substantially curved portion of the discharge element which is defined in a free end of the discharge element;
- the evacuation element comprises an oil guiding element corresponding to a second part of the evacuation element which is defined in a side wall of a crankcase of the engine extending from a receiving member to the second compartment of the oil sump;
- the separation element comprises:
- ⁇ a first end defined by a connecting region between the cylinder block and the oil sump, and / or
- the second end of the separating element is adapted to guide the oil to the discharge element to the counterweight of the crankshaft;
- the separating element has a generally semi-cylindrical general shape corresponding to the envelope curve of the crankshaft counterweight trajectories
- the separating element comprises an anti-oil raising element defined on a lower face of this separating element, said anti-upstanding element forming an acute angle with said lower face, said angle being defined opposite the second compartment.
- the invention also relates to an internal combustion engine equipped with an oil sump and a crankcase, the engine comprising such an anti-splash device.
- the invention also relates to a method of operating such an anti-bubbling device of a crankshaft, comprising the following steps:
- FIG. 1 is a schematic partial cross sectional view of an oil sump and a crankcase of an internal combustion engine equipped with an anti-bubbling device of a crankshaft according to the embodiment of the invention
- FIG. 2 is a view on a larger scale of part A of FIG. 1, and
- FIG. 3 is a flow chart relating to a method of operation of the crankshaft anti-bubbling device.
- X is the longitudinal longitudinal direction front to rear of the engine
- Y is the direction transverse right-left which is horizontal and perpendicular to X
- Z is the vertical direction jointly perpendicular to the directions X and Y.
- crankcase 3 and an oil sump 2 of an internal combustion engine 1 of a motor vehicle.
- the crankcase 3 comprises moving parts. These moving parts correspond in a non-exhaustive and non-limiting manner to a crankshaft 12, crank journals, crank pins 13b, counterweight 13a of the crankshaft, crankshaft bearings, connecting rods, pistons or a camshaft .
- an anti-splash device 5 of the crankshaft 12 is arranged both in the crankcase 3 and in the oil sump. 2.
- This anti-splash device 5 comprises a separating element 6a of the oil sump 2 of the engine 1 in first and second compartments 4a, 4b, and a discharge element 6b for driving the lubricating oil 15 of the engine 1 of the first compartment 4a to the second compartment 4b forming the bottom 14 of the oil sump 2 and this, in particular by the action of the crankshaft 12.
- this evacuation element 6b comprises a receiving element 10 and a guiding element 11.
- the receiving member 10 corresponds to a first substantially curved portion of the discharge member 6b which is defined in a free end of the discharge member 6b.
- the guiding element 1 1 of the oil 15 corresponds for its part to a second part of the evacuation element 6b defined in a side wall of the crankcase 3 of the engine 1. This guiding element 1 1 extends in the direction Z of the receiving element 10 to the second compartment 4b of the oil sump 2.
- the separating element 6a visible in FIG. 2 is arranged in the oil sump 2 and the crankcase 3. More precisely, the separation element 6a is situated above the level of oil 15 contained in the second compartment 4b of the oil sump 2.
- This separation element 6a comprises:
- This separation element 6a is made in a concave shape substantially similar to that of a shell or a scoop. More specifically, the separation element 6a is shaped to envelop the lower part of the crankshaft 12 forming the counterweights 13a of the crankshaft 12. This separating element 6a has a substantially semi-cylindrical general shape corresponding to the envelope curve of the trajectories of the counterweights 13a. crankshaft.
- the separating element 6a also comprises lower and upper faces 8a, 8b which are preferably substantially parallel to each other. Note however that the lower face 8b may have a different shape being for example flat.
- the upper face 8a then has a substantially concave cross-sectional shape so as to have inclined surfaces on which all or part of the lubricating oil from the moving parts of the motor 1 can slide and spread.
- the volume of oil 15 thus collected on the upper face 8a is sufficient to be in contact with the counterweight 13a of the crankshaft.
- the first end 7a of the separating element 6a is connected to a side wall of the oil sump 2 by being preferably located in a connecting zone 16 of the cylinder block 3 with the oil sump 2.
- the second end 7b is positioned in the vicinity of the evacuation element 6b, preferably at least at the counterweight, so that the oil 15 collected by the separating element 6a in the first compartment 4a is evacuated towards this evacuation element 6b. More specifically, the second end 7b is located below the receiving element 10 of the evacuation element 6b. This second end 7b presents:
- the second end 7b and the receiving member 10 respectively have heights h1 and h2 relative to the bottom 14 of the oil sump 2 which are different. More precisely, the height h2 is substantially greater than the height h1. It will be noted that the difference between these two heights h1 and h2 is substantially equal to the difference E2.
- the separating element 6a is arranged in the crankcase 3 and the oil sump 2 so as to avoid any contact with the moving parts of the engine 1, namely mainly the counterweight 13a of the crankshaft 12.
- the upper face 8a has a gap E3 with the counterweight 13a of the crankshaft.
- the gap E3 is between about 3 and 5 mm, and is preferably 4 mm.
- the upper face 8a of the separating element 6a is defined so that the counterweights 13a of the crankshaft are in contact with the oil 15 collected on the upper face 8a of the separating element 6a.
- the upper face 8a of the second end is adapted to guide the movement of the oil to the discharge element 6b.
- the counterweights are partly immersed in a sheet of oil received by the upper face 8a of the separating element.
- said oil is displaced in the direction of rotation of the crankshaft and guided by the upper face 8a of the second end 7b to the evacuation element 6b.
- the upper face 8a of the separation element 6a is able to collect the oil 15 coming from the moving parts of the engine 1.
- the lower face 8b it comprises an anti-up element 9 of oil 15.
- This anti-raising element 9 is located in the second part of the separating element 6a on the lower face 8b, preferably near the second end 7b of this separation element 6a.
- this anti-lift element 9 is located at a distance D from this second end 7b, the distance D measuring approximately 25 mm.
- the anti-raised element 9 forms with the lower face 8b an acute angle positioned opposite the second compartment 4b. This angle a is between about 60 and 100 degrees, and is preferably 80 degrees.
- such a separation element 6a makes it possible to limit the movements of the oil 15 included in the second compartment 4b during longitudinal and transverse accelerations of the vehicle so as to avoid the aeration of the oil 15 by the gases contained in the oil sump 2.
- This separating element 6a also contributes to preventing the oil 15 from coming into contact with the moving parts of the crankcase 3.
- the anti-splash device 5 is produced during the manufacturing process of the crankcase 3 and the oil sump 2, in particular for molding processes. Such methods are implemented from a permanent mold (metal) or a destructible mold (sand mold or resorbable salt). Alternatively, the anti-splash device 5 may correspond to a set of parts attached to the oil sump 2 and the cylinder block 3, comprising the separation element 6a and the discharge element 6b. These inserts are for example monobloc parts made of molded polymer or metal material for example copper, nickel, aluminum or their alloys.
- one aspect of the invention relates to a method of operation of the anti-bubbling device 5 of the crankshaft 12 comprising an initial step of starting 17 of the engine 1 which aims to put the engine 1 in operating condition.
- crankshaft 12 is driven in a rotational movement which is made in the clockwise direction with reference to the arrow shown in FIG.
- the oil 15 from the moving parts of the engine 1 is recovered in the first compartment 4a of the oil sump 2 on the upper face 8a of the separation element 6a.
- This recovered oil forms a volume of oil 15 with which the crankshaft 12 and in particular the counterweight 13a of the crankshaft are in contact.
- the oil 15 is then driven by the crankshaft 12 in rotation and in particular by the counterweight 13a thereof to the second end 7b of the separation element 6a to the element receiving member 10 in the direction of the arrows visible in FIG. 2.
- This receiving element 10 channels the received oil 15 so as to orient all or part of it towards the guiding element 1 1 of the evacuation element. 6b.
- the oil 15 coming from the receiving element 10 is then driven by gravity towards the second compartment 4b, being directed by the guide element 11 in the direction of the arrows visible on the FIG. 2. It will be noted that during the passage of the oil 15 from the first compartment 4a to the second compartment 4b, the anti-raising element 9 prevents the oil 15 from passing back into the first compartment 4a.
- the oil 15 included in the second compartment 4b can then be sucked by an oil pump of a lubrication circuit of the engine 1 which can be disposed either inside or outside the housing of oil 2 so that this oil 15 is reinjected at the moving parts of the engine 1. Subsequently, the collection steps 18 and driving 19 are then performed again.
- the invention thus makes it possible to substantially reduce the power consumed by the oil pump of the lubrication circuit as well as to limit the aeration of the oil 15 by the gases contained in the oil sump 2 which contribute to accelerating the aging of the oil 15.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1553454A FR3035149B1 (fr) | 2015-04-17 | 2015-04-17 | Dispositif anti-barbotage d'un vilebrequin |
| PCT/FR2016/050457 WO2016166431A1 (fr) | 2015-04-17 | 2016-03-01 | Dispositif anti-barbotage d'un vilebrequin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3283739A1 true EP3283739A1 (fr) | 2018-02-21 |
| EP3283739B1 EP3283739B1 (fr) | 2022-05-04 |
Family
ID=53366168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16713533.4A Active EP3283739B1 (fr) | 2015-04-17 | 2016-03-01 | Dispositif anti-barbotage d'un vilebrequin |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3283739B1 (fr) |
| FR (1) | FR3035149B1 (fr) |
| WO (1) | WO2016166431A1 (fr) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4270497A (en) * | 1979-08-22 | 1981-06-02 | Valerio Robert M | Oil pan for internal combustion engines |
| US4519348A (en) * | 1983-04-21 | 1985-05-28 | Edward Hamilton | Oil pan and windage tray for high performance engines |
| JP4490607B2 (ja) * | 2001-08-08 | 2010-06-30 | 本田技研工業株式会社 | シリンダブロックのオイル落とし構造 |
| US8281758B2 (en) * | 2005-08-03 | 2012-10-09 | Etg Limited | Engine lubrication method |
| DE102008060412B4 (de) * | 2008-11-28 | 2023-03-30 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Verbrennungsmotor |
| US20100147253A1 (en) * | 2008-12-11 | 2010-06-17 | International Engine Intellectual Property Company, Llc | Oil Pan |
| JP2014218980A (ja) * | 2013-05-10 | 2014-11-20 | 本田技研工業株式会社 | 内燃機関のバッフルプレート |
-
2015
- 2015-04-17 FR FR1553454A patent/FR3035149B1/fr not_active Expired - Fee Related
-
2016
- 2016-03-01 WO PCT/FR2016/050457 patent/WO2016166431A1/fr not_active Ceased
- 2016-03-01 EP EP16713533.4A patent/EP3283739B1/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP3283739B1 (fr) | 2022-05-04 |
| FR3035149B1 (fr) | 2018-10-26 |
| FR3035149A1 (fr) | 2016-10-21 |
| WO2016166431A1 (fr) | 2016-10-20 |
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