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Controllable coolant pump with an electro-hydraulic baffle plate adjustment

A coolant pump and deflector technology, which is used in engine cooling, coolant flow control, pump device, etc., can solve problems such as rapid heating delay, and achieve the effect of reduced fuel consumption and compact structure space

Inactive Publication Date: 2014-07-23
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the coolant circulates during a cold start of the internal combustion engine and thus the desired rapid heating of the internal combustion engine is delayed

Method used

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  • Controllable coolant pump with an electro-hydraulic baffle plate adjustment
  • Controllable coolant pump with an electro-hydraulic baffle plate adjustment
  • Controllable coolant pump with an electro-hydraulic baffle plate adjustment

Examples

Experimental program
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Effect test

Embodiment Construction

[0019] figure 1 A coolant pump 1 is shown in section, which can preferably be used for a coolant circuit of an internal combustion engine. A pump shaft 3 designed as a hollow shaft is inserted into the pump housing 2 of the coolant pump 1 , which is rotatably mounted via two bearings 4 , 5 designed in particular as roller bearings. The first bearing 4 is inserted into the bore 6 of the pump housing 2 , while the second bearing 5 is inserted between the shoulder of the pump housing 2 and the axial receptacle of the belt pulley 7 fixed in rotation on the pump shaft 3 between. The drive of the coolant pump 1 takes place via a traction mechanism drive (not shown), wherein a traction mechanism, a belt or a chain connects the drive disc 7 to other drive discs. An impeller 8 arranged opposite the drive disk 7 on the pump shaft 3 is associated with a suction chamber 9 with which, in the operating state of the coolant pump 1 , the coolant is delivered radially as a volume flow to the...

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Abstract

The invention relates to a controllable coolant pump (1) of a cooling circuit for an internal combustion engine, having a pump housing (2), in which a pump shaft (3) with associated impeller (8) is rotatably arranged. The impeller (8) conveys a coolant as a volume flow via an intake connection (9) in a pressure or spiral channel of the coolant pump (1). The volume flow can be influenced by a baffle plate (11) which encloses the outside of the impeller (8), the push rod (12) of said baffle plate being guided in the pump shaft (3). In connection with an actuator (17) the baffle plate (11) can be continuously adjusted between two limit positions against the force of a spring means (30).; A control element, which has an electro-hydraulic action and which is integrated into the pump shaft (3), serves as an actuator (17), wherein the pressurised coolant in the coolant pump (1) is provided as a hydraulic fluid.

Description

technical field [0001] The invention relates to a regulated coolant pump for a cooling circuit of an internal combustion engine. A pump shaft including the impeller is rotatably mounted in the pump housing of the coolant pump, which pump shaft is preferably driven by the traction mechanism transmission via an associated drive disc. The impeller conveys the coolant as a volume flow via the suction connection into the pressure channel or spiral channel of the coolant pump. In this case, the volume flow can be influenced by means of a baffle surrounding the impeller on the outside, the associated push rod of which is guided in the pump shaft. The deflector in combination with the actuator can be infinitely adjusted between the two end positions against the spring means. Background technique [0002] To cool a liquid-cooled, in particular water-cooled, internal combustion engine, the coolant or cooling medium is pumped by means of a coolant pump through the cooling ducts of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01P5/12F01P5/10F01P7/16F04D15/00
CPCF01P5/12F01P7/164F04D15/0038F05D2270/64F04D13/12F04D27/002
Inventor 马库斯·波普爱德华·戈洛瓦泰-施米特
Owner SCHAEFFLER TECH AG & CO KG
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