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Mechanical combustion-engine-driven fluid pump

A combustion engine, mechanical technology, applied in the direction of machines/engines, mechanical equipment, non-variable pumps, etc., can solve the problem of fluid pumps not working

Inactive Publication Date: 2014-03-12
PIERBURG PUMP TECH ITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the solenoid fails, the magneto-rheological clutch cannot engage so that the fluid pump cannot work

Method used

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  • Mechanical combustion-engine-driven fluid pump
  • Mechanical combustion-engine-driven fluid pump

Examples

Experimental program
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Embodiment Construction

[0016] The drawing shows a typical automotive setup including an internal combustion engine 12 , a mechanical fluid pump 10 directly driven by the internal combustion engine 12 , and a vacuum-actuated brake assist unit 14 . The fluid pump 10 is designed as a vacuum pump 10 and supplies a pneumatic brake assist unit 14 with a low pressure. The internal combustion engine 12 is mechanically directly connected to the input shaft 20 of the clutch 16 of the vacuum pump 10 such that the input shaft 20 always rotates at a rotational speed proportional to the rotational speed of the internal combustion engine 12 .

[0017] The clutch 16 is arranged between the input shaft 20 and the output shaft 21 and is a magneto-rheological clutch 16 . The clutch 16 connects the input shaft 20 and the output shaft 21 when the clutch is engaged, and disconnects the output shaft 21 and the input shaft 20 when the clutch is disengaged. The clutch 16 has: two clutch bodies 22, 24 defining a fluid gap 2...

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PUM

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Abstract

The invention refers to a mechanical combustion-engine-driven fluid pump (10) comprising an input shaft (20) which is directly driven by the combustion engine (12), a pumping unit (18) with a pump rotor (19), and a clutch (16) between the input shaft (20) and the pump rotor (19). The clutch (16) is a magneto-rheological clutch (16) comprising a fluid gap (26) between two clutch bodies (22, 24), whereby the fluid gap (26) is filled with a magneto-rheological fluid (28). A shiftable permanent magnet element (30) is provided, whereby the permanent magnet element (30) is shiftable between an engaged position, wherein the permanent magnet element's magnetic field penetrates the gap (26) with high magnetic flux, and a disengaged position, wherein the magnet element's magnetic field penetration flux is less than in the engaged position. An actuator (42) is provided for moving the permanent magnet element (30) between its engaged and its disengaged position. The magneto-rheological clutch is failsafe.

Description

technical field [0001] The present invention relates to a mechanical combustion engine driven fluid pump for supplying fluid, pressurized gas or vacuum to a motor vehicle unit driven by an internal combustion engine. [0002] The fluid pump may be a lubrication pump, a cooling pump, a vacuum pump, or a pump providing pressurized gas, such as pressurized air. The mechanical fluid pump is not driven by an electric rotor, but is directly coupled to the internal combustion engine. Therefore, the rotational speed of the fluid pump is proportional to the rotational speed of the internal combustion engine, so that the fluid pump is always rotating even when there is no need to supply fluid or create a vacuum for the suction action. Background technique [0003] In document US7422093B2 a fluid pump is described for providing pressurized fluid for hydraulic power steering. The fluid pump has a magneto-rheological clutch such that the performance of the fluid pump can be controlled ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D37/02
CPCF16D37/02F04D25/02
Inventor R.斯夸西尼E.巴塔莱西G.阿梅尼奥P.福特F.弗伦多R.里佐F.布奇A.费里
Owner PIERBURG PUMP TECH ITAL