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Switchable mechanical coolant pump

A coolant pump, mechanical technology, applied in the field of convertible mechanical coolant pump, can solve problems such as low friction

Inactive Publication Date: 2014-05-28
PIERBURG PUMP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alternatively, the friction clutch can be a wet friction clutch, with the disadvantage that the friction in a wet clutch environment is much lower than in a dry clutch environment

Method used

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  • Switchable mechanical coolant pump
  • Switchable mechanical coolant pump
  • Switchable mechanical coolant pump

Examples

Experimental program
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Effect test

Embodiment Construction

[0022] figure 1 and 2 Two embodiments of a switchable mechanical coolant pump 10, 10' are shown in longitudinal section. The coolant pump 10, 10' The coolant pump 10, 10' pumps coolant into the coolant circuit for cooling the internal combustion engine.

[0023] The coolant pump 10, 10' is provided with a metal housing 14 which supports a bearing module 44. The bearing module 44 supports a rotatable rotor shaft 16 provided with a pulley 12 co-rotating with the rotor shaft 16 . The pulley 12 and the rotor shaft 16 always rotate at a speed proportional to the speed of the driving engine. The pulley 12 is disposed at the distal end of the rotor shaft 16 .

[0024] At the opposite proximal end of the rotor shaft 16 there is provided a pump wheel 18 which is rotatable but not axially movable relative to the rotor shaft 16 . The pump wheel 18 basically comprises a circular base plate 19 and pump blades 17 protruding axially from the base plate 19 in the proximal dire...

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PUM

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Abstract

The invention refers to a switchable mechanical coolant pump (10) comprising a pulley wheel (12) co-rotating with and supported by a rotatable rotor shaft (16), the pulley wheel (12) being directly drivable by a combustion engine, a pump wheel (18) rotatably supported at the rotor shaft (16), an electrically switched wedge-coupled wet friction clutch (40) with a clutch support (26) being fixed to the rotor shaft (16), a clutch ring (30) at the proximal side of the pump wheel (18), and a separate clutch disk (20) rotatably and shiftably supported by the rotor shaft (16), the clutch disk (20) comprising a ferromagnetic element (21) and being arranged axially between the clutch support (26) and the clutch ring (30), a static electromagnet (24) axially pulling the clutch disk (20) to the clutch support (26) into a disengaged position when energized, and a wedge coupling mechanism (22); defined at the proximal side of the clutch disk (20) and the distal side of the clutch support (26), the wedge coupling mechanism (22) comprising: a wedge element (36) and a counter-wedge element (38).

Description

technical field [0001] The present invention relates to a switchable mechanical coolant pump having a wet friction clutch actuated by an electromagnet. Background technique [0002] A mechanical coolant pump is driven by the internal combustion engine, the coolant pump producing a flow of coolant for the internal combustion engine. The coolant pump has a pulley driven by a drive belt. The switchable mechanical coolant pump is provided with a clutch arrangement which makes it possible to shut off the coolant pump if effective cooling of the engine is not required, for example immediately after a cold start of the engine. [0003] The friction clutch can be a dry friction clutch, which is exposed to the environment, only capable of air cooling and increases the axial dimension of the dry part of the coolant pump. Alternatively, the friction clutch can be a wet friction clutch, with the disadvantage that the friction in the environment of a wet clutch is much lower than in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D13/02F16D27/112
CPCF04D13/021F16D2023/123F16D27/112
Inventor J.C.施耐德L.菲尼多里A.金思特T.施万德
Owner PIERBURG PUMP TECH
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