JP2008520897A - Variable discharge vane type oil pump - Google Patents

Variable discharge vane type oil pump Download PDF

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Publication number
JP2008520897A
JP2008520897A JP2007542149A JP2007542149A JP2008520897A JP 2008520897 A JP2008520897 A JP 2008520897A JP 2007542149 A JP2007542149 A JP 2007542149A JP 2007542149 A JP2007542149 A JP 2007542149A JP 2008520897 A JP2008520897 A JP 2008520897A
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Prior art keywords
rotor
stator
oil pump
blade
longitudinal axis
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JP2007542149A
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Japanese (ja)
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アスカーリ・エンニオ
カンパーニ・ロレンツォ
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Hpe High Performance Engineering Srl
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/22—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
    • F04C14/223—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam
    • F04C14/226—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam by pivoting the cam around an eccentric axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0818—Vane tracking; control therefor
    • F01C21/0827—Vane tracking; control therefor by mechanical means
    • F01C21/0836—Vane tracking; control therefor by mechanical means comprising guiding means, e.g. cams, rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0881—Construction of vanes or vane holders the vanes consisting of two or more parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/348—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the vanes positively engaging, with circumferential play, an outer rotatable member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/22—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

可変吐出量羽根式油ポンプは、ロータ（９）の周囲にロータ（９）に対して偏心した状態で取り付けられたステータ（１０）を備えており、ロータ（９）は、長手軸（６）を中心として回転するように構成されるとともに、径方向外方に開口する複数の溝（１５）を有している。各溝（１５）には、対応する羽根（１７）が摺動可能に係合している。羽根（１７）は、単一の環状の摺動部材（１９）をロータ（９）とステータ（１０）との間に介在させることで、ステータ（１０）に接触するように配置されている。
【選択図】図２The variable discharge vane type oil pump includes a stator (10) attached in a state of being eccentric with respect to the rotor (9) around the rotor (9). The rotor (9) has a longitudinal axis (6). And a plurality of grooves (15) opening radially outward. A corresponding blade (17) is slidably engaged with each groove (15). The blade (17) is disposed so as to contact the stator (10) by interposing a single annular sliding member (19) between the rotor (9) and the stator (10).
[Selection] Figure 2

Description

本発明は、可変吐出量羽根式油ポンプに関する。特に、本発明は、長手軸を中心として回転するように取り付けられており、複数の径方向外方に開口する溝を有するロータと、ロータの周囲に延在して、ロータに対して偏心して取り付けられているステータと、各々が、対応する溝内で互いに摺動可能に取り付けられおり、ステータに接触して配置されている外縁部を有する複数の羽根と、ロータとステータとの間の偏心度、すなわちポンプの吐出量を選択的に制御する調節手段とを備えた形式の可変吐出量羽根式油ポンプに関する。   The present invention relates to a variable discharge blade type oil pump. In particular, the present invention is mounted to rotate about a longitudinal axis, and has a rotor having a plurality of radially open grooves, and extends around the rotor so as to be eccentric with respect to the rotor. An attached stator, a plurality of blades, each slidably mounted in a corresponding groove and having an outer edge disposed in contact with the stator, and an eccentricity between the rotor and the stator The present invention relates to a variable discharge vane type oil pump of a type having a degree, that is, an adjusting means for selectively controlling the discharge amount of the pump.

上述の形式の公知の可変吐出量羽根式油ポンプは、複数の羽根とステータとの間に比較的大きな摺動摩擦が生じるという事実に主として起因する欠点を有している。   Known variable discharge vane oil pumps of the type described above have drawbacks mainly due to the fact that relatively large sliding friction occurs between the blades and the stator.

本発明の目的は、上述の欠点を有しない可変吐出量羽根式油ポンプを提供することである。   The object of the present invention is to provide a variable discharge vane type oil pump which does not have the above-mentioned drawbacks.

本発明によれば、添付の特許請求の範囲に記載の可変吐出量羽根式油ポンプが提供される。   According to the present invention, a variable discharge vane type oil pump described in the appended claims is provided.

本発明は、これに限定されるわけではないが、添付図面に示す本発明の好ましい実施形態の以下の説明で明らかになるであろう。   The present invention will become apparent from the following description of preferred embodiments of the invention illustrated in the accompanying drawings, but is not limited thereto.

図１〜図３には、車両（図示せず）の内燃機関（図示せず）の潤滑系統（図示せず）に油を供給する可変吐出量羽根式油ポンプ１が示されている。   1 to 3 show a variable discharge blade type oil pump 1 that supplies oil to a lubrication system (not shown) of an internal combustion engine (not shown) of a vehicle (not shown).

ポンプ１は、矩形の断面を有する、ほぼ平行６面体の支持ケース２を有している。支持ケース２は、ほぼ平坦な面４によって側方が定められた第１支持板３を有している。第１支持板３には空洞５が設けられている。空洞５は、平坦面４に直交する長手軸６を有しており、また平坦面４に面して外方に開口しており、この第１支持板３の開口は、軸方向において平坦面４に接触して配置される第２支持板７によって閉じられている。   The pump 1 has a substantially parallelepiped support case 2 having a rectangular cross section. The support case 2 has a first support plate 3 whose side is defined by a substantially flat surface 4. The first support plate 3 is provided with a cavity 5. The cavity 5 has a longitudinal axis 6 orthogonal to the flat surface 4 and opens outwardly facing the flat surface 4. The opening of the first support plate 3 is a flat surface in the axial direction. 4 is closed by a second support plate 7 that is disposed in contact with 4.

さらに、ポンプ１は、長手軸６を中心として回転するように第１支持板３および第２支持板７を貫通して取り付けられ、またキー溝が形成された円筒形のロータ（回転子）９を支持する駆動軸８を有している。ロータ９は、空洞５内に収容される。ロータ９の、軸６に平行に測定される幅は、軸６に平行に測定される空洞５の幅にほぼ等しく設定されている。   Further, the pump 1 is mounted through the first support plate 3 and the second support plate 7 so as to rotate about the longitudinal axis 6, and has a cylindrical rotor (rotor) 9 formed with a keyway. Has a drive shaft 8 for supporting the motor. The rotor 9 is accommodated in the cavity 5. The width of the rotor 9 measured parallel to the axis 6 is set to be approximately equal to the width of the cavity 5 measured parallel to the axis 6.

空洞５は、さらにステータ（固定子）１０を収容している。ステータ１０は、ロータ９の周囲に延在する。ステータ１０の、長手軸６に平行に測定される幅は、同様に長手軸６に平行に測定される空洞５の幅にほぼ等しい。ステータ１０の内側は、ロータ９に対して偏心した位置に配置されるほぼ円筒形の内表面１１によって画定されている。   The cavity 5 further accommodates a stator (stator) 10. The stator 10 extends around the rotor 9. The width of the stator 10 measured parallel to the longitudinal axis 6 is approximately equal to the width of the cavity 5 measured similarly parallel to the longitudinal axis 6. The inner side of the stator 10 is defined by a substantially cylindrical inner surface 11 that is located eccentrically with respect to the rotor 9.

ステータ１０は、長手軸６と平行である支持軸（支点軸）１３を中心として、公知の形式の調節装置１２の制御のもとで第１支持板３に対して揺動可能に第１支持板３に取り付けられている。これにより、ロータ９とステータ１０の内表面１１との間の偏心度を選択的に制御することが可能である。   The stator 10 has a first support that can swing with respect to the first support plate 3 around a support shaft (fulcrum shaft) 13 that is parallel to the longitudinal axis 6 under the control of an adjustment device 12 of a known type. It is attached to the plate 3. Thereby, it is possible to selectively control the eccentricity between the rotor 9 and the inner surface 11 of the stator 10.

ロータ９は、軸方向に対向する両側面に、２つの互いに対向する円筒形の空洞１４を有している。空洞１４は、長手軸６と同心に設けられ、一方の空洞が支持板３に面し、他方の空洞が支持板７に面している。さらに、ロータ９には、複数の放射状の溝１５（図示の例では、６つの溝１５）が設けられている。これらの溝１５は、ロータ９を貫いて長手軸６と平行に設けられており、長手軸６を中心として均等な間隔で形成され、長手軸６と同軸であるロータ９の外表面１６において径方向外方に開口しており、さらに空洞１４において軸方向外方にも開口している。   The rotor 9 has two cylindrical cavities 14 facing each other on both side surfaces facing each other in the axial direction. The cavity 14 is provided concentrically with the longitudinal axis 6, with one cavity facing the support plate 3 and the other cavity facing the support plate 7. Further, the rotor 9 is provided with a plurality of radial grooves 15 (six grooves 15 in the illustrated example). These grooves 15 are provided parallel to the longitudinal axis 6 through the rotor 9, are formed at equal intervals around the longitudinal axis 6, and have a diameter on the outer surface 16 of the rotor 9 that is coaxial with the longitudinal axis 6. It opens outward in the direction and further opens outward in the cavity 14 in the axial direction.

それぞれの溝１５には、長手軸６と平行に延びる外縁部１８を有する羽根１７が摺動可能に係合されている。羽根１７の外縁部１８は、ステータ１０とロータ９との間に環状のシュー（摺動部材）（shoe）１９を配置することで、ステータ１０の内表面１１にシュー１９を介して接触した状態で摺動可能に配置されている。   A blade 17 having an outer edge 18 extending parallel to the longitudinal axis 6 is slidably engaged with each groove 15. The outer edge portion 18 of the blade 17 is in contact with the inner surface 11 of the stator 10 via the shoe 19 by disposing an annular shoe 19 between the stator 10 and the rotor 9. Is slidably arranged.

長手軸６に平行に測定されるシュー１９の幅と、同様に長手軸６に平行に測定される羽根１７の幅とはほぼ等しい。ステータ１０および羽根１７は共に、シュー１９の周方向に沿って、つまり、シュー１９の外表面および内表面に沿って、シュー１９の前記幅の方向にわたって接触している。これにより、シュー１９は、ステータ１０および羽根１７に対して連結されている。   The width of the shoe 19 measured parallel to the longitudinal axis 6 and the width of the blade 17 measured similarly parallel to the longitudinal axis 6 are substantially equal. Both the stator 10 and the blade 17 are in contact with each other over the width direction of the shoe 19 along the circumferential direction of the shoe 19, that is, along the outer surface and the inner surface of the shoe 19. Thereby, the shoe 19 is connected to the stator 10 and the blades 17.

それぞれの羽根１７は、対応する溝１５から両方の空洞１４内に突出しており、長手軸６と平行に延びる内縁部２０を有している。羽根１７は、内縁部２０が、各空洞１４内に収容された２つの環状部材２１に接触した状態で配置されている。各環状部材２１は、駆動軸８の周囲に延びており、駆動軸８の直径よりも大きく、かつ対応する空洞１４の直径よりも小さい直径を有するように設定されて、対応する空洞１４内において遊動可能となっている。   Each vane 17 protrudes from the corresponding groove 15 into both cavities 14 and has an inner edge 20 that extends parallel to the longitudinal axis 6. The blade 17 is arranged in a state where the inner edge portion 20 is in contact with the two annular members 21 accommodated in the cavities 14. Each annular member 21 extends around the drive shaft 8 and is set to have a diameter larger than the diameter of the drive shaft 8 and smaller than the diameter of the corresponding cavity 14. It is possible to move.

隣り合う羽根１７間で、ポンプ室２２が周方向に形成されている。ポンプ室２２は、羽根１７に加え、径方向においてロータ９およびシュー１９によって、軸方向において第１支持板３および第２支持板７によって画定されている。ポンプ室２２は、ロータ９によって軸６を中心として油の吸引口２３および吐出口２４を通過するように移動し、長手軸６を中心とするロータ９の回転およびロータ９とステータ１０の内表面１１との間の偏心にともない、ポンプ室２２の容積が変化する。   A pump chamber 22 is formed in the circumferential direction between adjacent blades 17. In addition to the blades 17, the pump chamber 22 is defined by the rotor 9 and the shoe 19 in the radial direction and by the first support plate 3 and the second support plate 7 in the axial direction. The pump chamber 22 is moved by the rotor 9 so as to pass through the oil suction port 23 and the discharge port 24 about the shaft 6, and the rotation of the rotor 9 about the longitudinal axis 6 and the inner surfaces of the rotor 9 and the stator 10. 11, the volume of the pump chamber 22 changes.

さらに、この点に関して重要なことは、それぞれのポンプ室２２の吸引口２３および吐出口２４における容積、すなわちポンプ１の吐出量が、ステータ１０を支持軸１３を中心として揺動させることによって、すなわちロータ９とステータ１０の内表面１１との間の偏心度を変更することによって選択的に制御されている点である。   Further, in this respect, what is important is that the volume at the suction port 23 and the discharge port 24 of each pump chamber 22, that is, the discharge amount of the pump 1, is caused by swinging the stator 10 around the support shaft 13, that is, This is a point that is selectively controlled by changing the eccentricity between the rotor 9 and the inner surface 11 of the stator 10.

図２に示されているように、それぞれの羽根１７は、互いに重ね合わせられた少なくとも２枚の薄板２５（図示の例では、４枚の薄板２５）を有しており、これらの薄板２５が、羽根１７とシュー１９との間で効果的な流体密封を確保するため、互いに径方向に摺動可能に連結されている。   As shown in FIG. 2, each blade 17 has at least two thin plates 25 (four thin plates 25 in the illustrated example) overlapped with each other. In order to ensure effective fluid sealing between the blade 17 and the shoe 19, they are connected to each other so as to be slidable in the radial direction.

図示されていない変形例では、シュー１９を、ステータ１０に設けられて内表面１１において外方に開口する空洞内に収容して、羽根１７と接触するよう空洞から外方に突出させてもよい。   In a modification not shown, the shoe 19 may be accommodated in a cavity provided on the stator 10 and open outwardly on the inner surface 11 and protrude outwardly from the cavity so as to contact the blades 17. .

ポンプ１の動作は、上述の説明から容易に理解することができ、したがってさらなる説明は不要である。   The operation of the pump 1 can be easily understood from the above description and therefore no further description is necessary.

本発明の羽根式ポンプの好ましい実施の形態の概略縦断面図である。It is a schematic longitudinal cross-sectional view of preferable embodiment of the blade | wing type pump of this invention. 図１の線ＩＩ‐ＩＩに沿って切断した断面図である。It is sectional drawing cut | disconnected along line II-II of FIG. 図１の線ＩＩＩ‐ＩＩＩに沿って切断した断面図である。It is sectional drawing cut | disconnected along line III-III of FIG.

Claims (5)

所定の長手軸（６）を中心として回転するように取り付けられており、前記長手軸（６）と同軸である表面（１６）を有し、この表面（１６）において径方向外方に開口する複数の溝（１５）が形成されているロータ（９）と、
ロータ（９）の周囲に延在して、ロータ（９）に対して偏心して取り付けられているステータ（１０）と、
各々が、対応する前記溝（１５）内で摺動可能に取り付けられており、ステータ（１０）に向き合う外縁部（１８）を有している複数の羽根（１７）と、
ロータ（９）とステータ（１０）との間の偏心度を選択的に制御する調節手段（１２）と、
を備えた可変吐出量羽根式油ポンプにおいて、さらに、
ステータ（１０）と羽根（１７）の外縁部（１８）との間に配置された単一の環状の摺動部材（１９）を備えていることを特徴とする可変吐出量羽根式油ポンプ。 It is mounted to rotate about a predetermined longitudinal axis (6), has a surface (16) that is coaxial with the longitudinal axis (6), and opens radially outward on this surface (16). A rotor (9) in which a plurality of grooves (15) are formed;
A stator (10) extending around the rotor (9) and mounted eccentrically with respect to the rotor (9);
A plurality of vanes (17) each slidably mounted within the corresponding groove (15) and having an outer edge (18) facing the stator (10);
Adjusting means (12) for selectively controlling the eccentricity between the rotor (9) and the stator (10);
In the variable discharge vane type oil pump provided with
A variable discharge blade type oil pump comprising a single annular sliding member (19) disposed between a stator (10) and an outer edge (18) of a blade (17). 請求項１において、摺動部材（１９）が、ステータ（１０）および羽根（１７）に対して周方向に摺動可能に連結されている可変吐出量羽根式油ポンプ。   The variable discharge blade type oil pump according to claim 1, wherein the sliding member (19) is slidably connected to the stator (10) and the blade (17) in the circumferential direction. 請求項１または２において、各羽根（１７）が、互いに重ね合わせられて互いに摺動可能に連結された少なくとも２枚の薄板（２５）を有している可変吐出量羽根式油ポンプ。   3. The variable discharge blade type oil pump according to claim 1 or 2, wherein each blade (17) has at least two thin plates (25) which are overlapped with each other and slidably connected to each other. 請求項１〜３のいずれか一項において、さらに、前記長手軸（６）と平行であるロータ（９）の対向する側面に配置され、長手軸（６）の周囲に延在する２つの環状の部材（２１）を備え、
各羽根（１７）が、対応する溝（１５）から軸方向に突出しており、前記環状の部材（２１）と接触して配置されている内縁部（２０）を有している可変吐出量羽根式油ポンプ。 The two annulars according to any one of claims 1 to 3, further arranged on opposite sides of the rotor (9) parallel to the longitudinal axis (6) and extending around the longitudinal axis (6) The member (21)
Each vane (17) protrudes from the corresponding groove (15) in the axial direction, and has a variable discharge vane having an inner edge (20) arranged in contact with the annular member (21) Oil pump. 所定の長手軸（６）を中心として回転するように取り付けられており、前記長手軸（６）と同軸である表面（１６）を有し、この表面（１６）において、径方向外方に開口する複数の溝（１５）が形成されているロータ（９）と、
ロータ（９）の周囲に延在して、ロータ（９）に対して偏心して取り付けられているステータ（１０）と、
各々が、対応する前記溝（１５）内で摺動可能に取り付けられており、ステータ（１０）に向き合う外縁部（１８）を有している複数の羽根（１７）と、
ロータ（９）とステータ（１０）との間の偏心度を選択的に制御する調節手段（１２）と、
を備えた可変吐出量羽根式油ポンプにおいて、
各羽根（１７）が、互いに重ね合わせられて互いに摺動可能に連結された少なくとも２枚の薄板（２５）を有しており、ステータ（１０）と羽根（１７）との間に、単一の環状の摺動部材（１９）が配置されていることを特徴とする可変吐出量羽根式油ポンプ。 Mounted to rotate about a predetermined longitudinal axis (6) and having a surface (16) coaxial with the longitudinal axis (6), the surface (16) opens radially outward. A rotor (9) in which a plurality of grooves (15) are formed;
A stator (10) extending around the rotor (9) and mounted eccentrically with respect to the rotor (9);
A plurality of vanes (17) each slidably mounted within the corresponding groove (15) and having an outer edge (18) facing the stator (10);
Adjusting means (12) for selectively controlling the eccentricity between the rotor (9) and the stator (10);
In the variable discharge vane type oil pump with
Each blade (17) has at least two thin plates (25) which are superposed on each other and slidably connected to each other, and between the stator (10) and the blade (17), An annular sliding member (19) is arranged, and a variable discharge amount blade type oil pump.
JP2007542149A 2004-11-19 2005-11-18 Variable discharge vane type oil pump Pending JP2008520897A (en)

Applications Claiming Priority (2)

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IT000088U ITBO20040088U1 (en) 2004-11-19 2004-11-19 OIL PUMP WITH VARIABLE FLOW PALLETS
PCT/IB2005/003452 WO2006054158A1 (en) 2004-11-19 2005-11-18 Variable delivery vane oil pump

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ITBO20040088U1 (en) 2005-02-19
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EP1812712A1 (en) 2007-08-01
EP1812712B1 (en) 2018-01-10
WO2006054158A8 (en) 2006-08-10
US20090155113A1 (en) 2009-06-18

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