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Vacuum pump for a motor vehicle engine

A technology for motor vehicles, vacuum pumps, applied to machines/engines, rotating or oscillating piston engines, engine components, etc. to achieve high rotational speeds and reduce wear

Active Publication Date: 2013-07-10
O M P OFFICINE MAZZOCCO PAGNONI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although this is advantageous from several points of view, a single vane vacuum pump constructed as schematically described above has disadvantages which arise especially when the rotational speed of the rotor is particularly high

Method used

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  • Vacuum pump for a motor vehicle engine
  • Vacuum pump for a motor vehicle engine
  • Vacuum pump for a motor vehicle engine

Examples

Experimental program
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Effect test

Embodiment Construction

[0050] first reference figure 1 , shows a vacuum pump according to the prior art and identified with the reference number 10 , in particular a single-vane vacuum pump for motor vehicle engines.

[0051] Vacuum pump 10 includes a stator 12 and a chamber 14 defined within stator 12 . The chamber 14 has a side wall 16 whose transverse section has a predetermined shape.

[0052] A rotor 18 is mounted within the chamber 14 . The rotor 18 is able to rotate about an axis parallel to the side wall 16 ( figure 1 In this is shown by point O) rotation.

[0053] The blade 20 is mounted on the rotor 18 such that it slides freely in a direction at right angles to the axis of rotation (O) of the rotor 18 . The vane 20 has a predetermined length L and two opposite ends 22a and 22b that slide substantially on the side wall 16 of the chamber 14 during operation of the vacuum pump 10 .

[0054] Such as figure 2 As shown in , in the prior art, the opposite ends 22a and 22b of the blade hav...

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Abstract

A vacuum pump for a motor vehicle engine which has a stator and a chamber, has a side wall, and the side wall has a transversal section with a predetermined shape. The rotor mounted in the chamber is capable of rotating around a rotation axis parallel to the side wall. The vane mounted on the rotor is free to slide in a direction at right angles with respect to the rotation axis of the rotor, and the vane has a predetermined length and two opposite end portions that substantially slide along the side wall of the chamber. At least one of the end portions of the vane has at least one part that has a bend radius substantially equal to that of a part of the side wall, when the one vane is at a reference operating position.

Description

technical field [0001] The invention relates to a vacuum pump, preferably of the so-called single vane type. [0002] In particular, the present invention relates to a vacuum pump for an engine of a motor vehicle, preferably but not necessarily limited to a heavy motor vehicle and / or not necessarily limited to a high power motor vehicle, for example intended to create a specific low pressure for actuation and operation A special device provided on a motor vehicle, such as a servo brake. [0003] The invention also relates to a vane for said vacuum pump. Background technique [0004] A single vane vacuum pump typically used in motor vehicles includes a stator, a low-pressure chamber defined within the stator, a rotor mounted within the low-pressure chamber, and vanes mounted on the rotor and freely movable relative to the rotor. In turn, the vane comprises a central body and two opposite ends of said body sliding substantially on the chamber wall. [0005] The desired low ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01C1/344F01C21/08F04C2/344F04C18/344
CPCF01C21/0881F04C2220/10F04C27/001F04C18/3442
Inventor 格鲁瑟佩·洛比恩度亚历山德拉·德兰戈格鲁夫瓦尼·琶兹尔卡尔洛·帕克提
Owner O M P OFFICINE MAZZOCCO PAGNONI