EP2450536B1 - Motor für Motorrad - Google Patents

Motor für Motorrad Download PDF

Info

Publication number
EP2450536B1
EP2450536B1 EP20100190004 EP10190004A EP2450536B1 EP 2450536 B1 EP2450536 B1 EP 2450536B1 EP 20100190004 EP20100190004 EP 20100190004 EP 10190004 A EP10190004 A EP 10190004A EP 2450536 B1 EP2450536 B1 EP 2450536B1
Authority
EP
European Patent Office
Prior art keywords
wall
engine
spoon
oil
crankshaft
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.)
Not-in-force
Application number
EP20100190004
Other languages
English (en)
French (fr)
Other versions
EP2450536A1 (de
Inventor
Dirk Steenwerkers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Steenfun
Original Assignee
Steenfun
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Steenfun filed Critical Steenfun
Priority to ES10190004T priority Critical patent/ES2428940T3/es
Priority to DK10190004T priority patent/DK2450536T3/da
Priority to EP20100190004 priority patent/EP2450536B1/de
Priority to PCT/EP2011/068578 priority patent/WO2012059357A1/fr
Publication of EP2450536A1 publication Critical patent/EP2450536A1/de
Application granted granted Critical
Publication of EP2450536B1 publication Critical patent/EP2450536B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/06—Dip or splash lubrication
    • 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
    • F01M11/06—Means for keeping lubricant level constant or for accommodating movement or position of machines or engines
    • F01M11/062—Accommodating movement or position of machines or engines, e.g. dry sumps
    • F01M11/064—Movement

Definitions

  • the invention relates to a motorcycle four-stroke engine using splash lubrication.
  • the invention relates to a motor four-stroke internal combustion engine comprising at least one piston cooperating with at least one connecting rod and a crankshaft to rotate the crankshaft along a horizontal crankshaft axis, a bath housing oil under the crankshaft, a splash lubrication system comprising a spoon secured to the rod and extending towards the housing.
  • the invention also relates to a motorcycle equipped with such an engine.
  • crankshaft of such engines partially plunged into an oil bath contained in the crankcase, which, due to the rotational movement of the crankshaft, caused and sprayed oil on parts of the engine requiring lubrication.
  • bubble lubrication is still used today, mainly for small stationary engines, such as portable generators, where still for small agricultural machines such as tillers and other lawn mowers, but also for motorcycle engines .
  • small stationary engines such as portable generators
  • small agricultural machines such as tillers and other lawn mowers
  • motorcycle engines but also for motorcycle engines .
  • the advantage of such a system is its simplicity and low cost.
  • crankshaft axis is horizontal and, when the motor is mounted on a motorcycle, this crankshaft axis is perpendicular to the running direction of the motorcycle. Accordingly, an orbital plane in which the spoon moves when the engine is in operation is a plane parallel to a plane formed by a non-steering wheel of the motorcycle. This orbital plane is a vertical plane when the bike is stationary and balanced on its two wheels.
  • the driver tilts the bike sideways and in the direction of the turn to ensure balance. This equilibrium is achieved when the vector sum of the gravitational force and the centrifugal force to which the motorcycle and the driver are subjected result in a force directed towards a point of contact between the motorcycle and the ground.
  • the driver straightens the bike in a substantially vertical position to ensure the same balance.
  • the driver successively tilts the motorcycle on either side of the vertical plane.
  • the orbital plane of the spoon obviously follows the same inclination movement as that of the motorcycle, while the crankcase oil, because of its inertia, does not immediately follow this movement. This has the effect of lowering the oil level at the spoon, so that this height may become insufficient for the spoon can draw oil, which will have the effect that the lubrication of the engine does not will not be done or insufficiently.
  • the housing of these known engines comprises, within its volume and on either side of an orbital plane of the spoon, walls forming an obstacle to a movement of the crankcase oil.
  • An object of the invention is to provide a motorcycle motor which provides better lubrication of the engine in the rolling situations described above as well as in other situations likely to cause lubrication problems similar to those described above. .
  • the engine according to the invention is characterized in that the housing comprises, within its volume and on either side of an orbital plane of the spoon, at least one wall forming an obstacle to a movement of the crankcase oil, each wall extending substantially transversely to the axis of the crankshaft and rising from a lower portion of the housing to a top of a distal end of the spoon when said spoon is in a lowest position.
  • Another advantage of an engine according to the invention is that, if the oil level in the crankcase is, under real conditions of use, below a recommended minimum level but nevertheless above the end distal from the spoon when said spoon is in its lowest position, the lubrication of the engine will still be assured, and this in more extreme driving conditions with a conventional engine. Indeed, by the same effect of the walls on the lateral movement of the oil, it will maintain a height of oil in the orbital plane of the spoon which is greater than in the absence of such walls.
  • the walls need not necessarily be contiguous to inner faces of the casing, since they are arranged in a fixed manner in the interior volume of the casing.
  • side and bottom edges of the walls are close to the inner faces of the housing. This prevents the oil from moving too easily between the walls and the inner faces of the housing, which would have the effect of reducing the desired effect.
  • the engine according to the invention is characterized in that the wall forms a partition in the casing and in that the wall has a height less than a minimum oil level recommended in the housing.
  • the walls form a partition in the housing, that is to say when the side and bottom edges of the walls are contiguous to the inner faces of the housing, the desired effect is better.
  • the walls have a height less than a minimum oil level recommended for the engine, that is to say when the walls are fully immersed in the oil when the engine is stopped, the oil , which will naturally tend to be partially transferred from one compartment to the other of the casing when the engine is inclined laterally, will distribute again substantially equally between the compartments when the engine reverses its direction of inclination (left / right or right / left).
  • the Fig.1 shows schematically front sections of a motor (1) known and shown in several lateral inclination positions of the engine.
  • This engine comprises, in known manner, a piston (2), a connecting rod (3), a crankshaft (4) having an axis of rotation (5), a housing (6) containing oil (7), and a spoon (8) connected to the connecting rod (3) for drawing oil into the housing (3) and for driving and throwing the oil to parts of the engine to be lubricated.
  • a distal end (9) of the spoon (8) describes an orbit lying in an orbital plane (10).
  • Said orbital plane (10) is perpendicular to the axis of rotation (5) of the crankshaft (4).
  • the motor (1) is shown as mounted on a motorcycle which we see the wheel (15). It is noted that when the motor (the motorcycle) is inclined to the left or to the right, the level of oil in the housing (6) is hollow, which has the effect of reducing the height of available oil at level of the spoon (8). Depending on the driving circumstances, this oil level can descend below the distal end (9) of the spoon (8), so that the engine will no longer be lubricated in these circumstances.
  • the Fig.2 schematically shows an "AA" cut of the engine of the Fig.1 when not inclined;
  • the Fig.3 shows schematically front sections of a motor not forming part of the invention, and according to several lateral inclination positions of said motor. It is a motor (1) as represented in Fig. 1 and further comprising two walls (11a, 11b) disposed within the housing (7) and respectively on either side of the orbital plane (10) of the spoon (8).
  • These walls are arranged to form an obstacle to a lateral movement of the oil (7) of the housing.
  • the walls are plates substantially flat, for example metal plates.
  • the presence of these walls inside the housing will have the effect of preventing the oil from moving too laterally when the motorcycle tilts to take turns.
  • the oil level in the orbital plane (10) of the distal portion (9) of the spoon will be greater than it would be in the absence of said walls, which allows the spoon (8) can continue to draw oil and lubricate the engine.
  • the Fig.4 schematically shows a section BB of the engine (1) of the Fig.3 when not inclined. It shows the walls (11a, 11b) which, in this example, are two metal plates fixed to the housing (6) by fixing means. There is a clearance between the lower (13) and lateral edges of each plate and respectively the lower and lateral walls of the casing, thus allowing the oil to be distributed again uniformly in the casing when the motor returns to its normal position ( orbital plane (10) vertical).
  • said clearance is between 1 mm and 2 cm.
  • the walls (11a, 11b) may be parts attached to the housing, which makes it easy to transform existing engines and not having such walls.
  • the walls (11a, 11b) are an integral part of the housing (example: casing having the walls and cast or formed in one piece).
  • each wall (11a, 11b) forms a partition, that is to say that it is sealingly connected to the housing in its lower and lateral part, an upper edge (12) of each wall remaining free.
  • Said upper edge (12) has a height (H1) which is less than a recommended minimum oil level (H2) in the housing.
  • the recommended minimum oil level (H2) is a typical data of an engine, well known to those skilled in the art, and which ensures a minimum oil volume in the crankcase. This makes it possible to obtain oil that has passed over a wall during a turn, would return to its original location during a turn in the opposite direction or when the motorcycle returns to a vertical position. .
  • the height (H1) of the upper edge (12) of each wall will thus be between the height of the distal end (9) of the spoon when the cylinder (2) is at its bottom dead point and the level of recommended minimum oil (H2) in the crankcase.
  • the Fig. 6A shows another version of the engine not part of the invention. This is the same engine as the one shown in Fig.5 except that the walls (11a, 11b) are arranged in such a way that an upper edge (12) of each wall is closer to the orbital plane (10) of the spoon than to the corresponding side wall of the housing (6).
  • the upper edge (12) of each wall is a distance from the orbital plane (10) which is less than 20% of the distance between said orbital plane (10) and the corresponding side wall of the housing.
  • the Fig. 6B shows a variant of the engine of the Fig. 6A in which the walls (11a, 11b) do not form partitions but are spaced apart from the housings. Preferably, said distance is between 1 mm and 2 cm.
  • the upper edge (12) of a wall may (but must not) be at a height (H1) which is greater than the recommended minimum oil level (H2) in the housing.
  • an upper edge (12) of a wall (11a, 11b) is closer to the orbital plane (10) of the spoon than a lower edge (13) of said wall.
  • FIG. 7a An exemplary embodiment is illustrated in the Fig. 7a .
  • This is the same engine as the one shown in fig.6a , except that the plates (11a, 11b) are here arranged obliquely.
  • This has the advantage that, during a left turn for example, the oil will pass more easily over the right wall (11b) and less easily over the left wall (11a), as a result of which oil will tend to accumulate more in the central region between the two plates, which makes it possible to have an oil level higher in the orbital plane (10) of the spoon.
  • the same advantage is of course obtained in a right turn.
  • the angle formed by a plate (11a, 11b) with the bottom wall of the casing is preferably between 20 ° and 90 °, more preferably between 30 ° and 60 °, even more preferably between 40 ° and 40 °. 50 °.
  • Another advantage of positioning the walls obliquely is to reduce the bulk of the walls while maintaining a sufficient volume of oil between the two walls.
  • the Fig. 7b shows an alternative embodiment of the engine of the Fig. 7a and wherein the walls (11a, 11b) are spaced apart from the housing.
  • the upper edge (12) of a wall may (but must not) be at a height (H1) which is greater than the recommended minimum oil level (H2) in the housing.
  • the invention also relates to a motorcycle comprising a motor (1) as described above.
  • the Fig.8 schematically shows a rear view of a motorcycle equipped with a motor according to the invention. It shows how the axis (5) of the crankshaft of the engine (1) is positioned relative to the motorcycle.
  • Motorcycle means any motorized vehicle designed to tilt - left or right - when the vehicle is in a corner.
  • the invention is therefore not limited to two-wheeled motor vehicles or engines for two-wheeled vehicles.
  • an engine according to the invention may also comprise several cylinders with several connecting rods, each connecting rod being or not being provided with a spoon (8), in which case the walls (11) for example between the orbital planes of the spoons or between the orbital plane of a spoon and a side wall of the housing.
  • the cylinder is vertical, but the invention also relates to any other arrangement of (the) cylinder (s), such as a horizontal cylinder or oblique ("V”) for example.
  • an engine according to the invention does not include an oil pump to lubricate the engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Claims (4)

  1. Viertaktmotor (1) für Motorrad, umfassend mindestens einen Kolben (2) der mit mindestens einer Pleuelstange (3) und einer Kurbelwelle (4) zusammenarbeitet um der Kurbelwelle entsprechend einer horizontalen Kurbelwellemittellinie (5) in Umdrehung zu fahren, eine Ölwanne (6) die unter der Kurbelwelle gelegen ist, und ein spritzendes Schmiersystem umfassend einen Löffel (8) der von der Pleuelstange (3) abhängig ist und der sich in einer Richtung zur Ölwanne (6) verlängert, die Ölwanne enthält - innerhalb seines Volumens und auf beiden Seiten eines Augenhöhlenplanes (10) des Löffels - mindestens eine Wand (11a, 11b) die ein Hindernis zu einer Bewegung des Öls der Ölwanne bildet, jede Wand verlängert im wesentlichen quer auf die Kurbelwellemittellinie (5) und steigt von einer Grundlage der Ölwanne zu über einem distalen Ende (9) des Löffels wenn der Löffel in seiner niedrigsten Position ist, dadurch gekennzeichnet dass für jede Wand (11a, 11b), ein höherer Rand (12) der Wand (11a, 11b) näher ist an dem Augenhöhlenplan (10) des Löffels als ein unterer Rand (13) der besagten Wand, und dadurch dass jede Wand (11a, 11b) eine schief geordnete Platte ist;
  2. Motor entsprechend dem Anspruch 1, dadurch gekennzeichnet dass jede Wand (11a, 11b) ein Fach in der Ölwanne bildet, und dadurch dass jede Wand eine Höhe (H1) hat die niedriger als ein minimaler empfohlener Schmierölstand (H2) in der Ölwanne (6) ist;
  3. Motor entsprechend Anspruch 1 oder 2, dadurch gekennzeichnet dass ein höherer Rand (12) jeder Wand näher ist an dem Augenhöhlenplan (10) des Löffels als zur entsprechenden seitlichen Wand der Ölwanne;
  4. Motorrad, das einem Motor (1) entsprechend irgendwelchen des vorausgegangenen Anspruchs enthält.
EP20100190004 2010-11-04 2010-11-04 Motor für Motorrad Not-in-force EP2450536B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES10190004T ES2428940T3 (es) 2010-11-04 2010-11-04 Motor para moto
DK10190004T DK2450536T3 (da) 2010-11-04 2010-11-04 Knallertmotor
EP20100190004 EP2450536B1 (de) 2010-11-04 2010-11-04 Motor für Motorrad
PCT/EP2011/068578 WO2012059357A1 (fr) 2010-11-04 2011-10-24 Moteur pour moto

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20100190004 EP2450536B1 (de) 2010-11-04 2010-11-04 Motor für Motorrad

Publications (2)

Publication Number Publication Date
EP2450536A1 EP2450536A1 (de) 2012-05-09
EP2450536B1 true EP2450536B1 (de) 2013-04-17

Family

ID=43743552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100190004 Not-in-force EP2450536B1 (de) 2010-11-04 2010-11-04 Motor für Motorrad

Country Status (4)

Country Link
EP (1) EP2450536B1 (de)
DK (1) DK2450536T3 (de)
ES (1) ES2428940T3 (de)
WO (1) WO2012059357A1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR698978A (fr) * 1930-07-08 1931-02-09 Perfectionnements aux procédés de graissage, dits par barbotage, dans les machines telles que moteurs à explosion ou toutes autres
US2449227A (en) * 1945-01-25 1948-09-14 Fairbanks Morse & Co Crankcase oil thrower and crankpin lubricating device
TW370160U (en) * 1998-12-31 1999-09-11 Ind Tech Res Inst 4-stroke engine lubrication system
JP2004218488A (ja) 2003-01-10 2004-08-05 Suzuki Motor Corp 車両用エンジンユニット

Also Published As

Publication number Publication date
ES2428940T3 (es) 2013-11-12
WO2012059357A1 (fr) 2012-05-10
DK2450536T3 (da) 2013-07-29
EP2450536A1 (de) 2012-05-09

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