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Coolant pumps for internal combustion engines

A technology of coolant pump and internal combustion engine, which is applied in the cooling of the engine, the control of coolant flow, and the components of the pumping device for elastic fluid, etc. , increased wear and other problems, to achieve the effect of small clearance, reduced roughness and low wear

Active Publication Date: 2022-02-01
PIERBURG PUMP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Accurate straight-line guidance of the control slide is difficult to obtain due to pressure fluctuations and manufacturing inaccuracies that may lead to slight tilting of the control slide
All this leads to increased wear on the opposing wall surfaces, which eventually leads to jamming and thus jeopardizes the functionality of the pump

Method used

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  • Coolant pumps for internal combustion engines

Examples

Experimental program
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Embodiment Construction

[0030] The coolant pump according to the invention comprises a pump housing 10 with an outer housing part 11, in which a helical delivery channel 12 is formed, in which passage is also formed in the housing An axial pump inlet 14 in the body part 11 sucks in coolant, which is conveyed via a delivery channel 12 to a pump outlet 16 formed tangentially in the outer housing part 11 and into the cooling circuit of the internal combustion engine. Furthermore, the housing part 11 can be formed in one piece, for example, with the crankcase or the cylinder head of the internal combustion engine.

[0031] For this purpose, a coolant pump impeller 20 configured as a radial impeller is fixed radially on the drive shaft 18 within the delivery channel 12 , the rotation of which coolant pump impeller 20 takes place to pump the coolant in the delivery channel 12 . delivery. A control pump wheel 22 is formed on the axial side of the coolant pump wheel 20 opposite the pump inlet 14 , which is ...

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PUM

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Abstract

The invention relates to a coolant pump for an internal combustion engine with: a drive shaft (18); a coolant pump impeller (20), which is arranged at least in a rotationally fixed manner on the drive shaft (18) on, and through which the coolant pump impeller can deliver coolant; the pump housing (10); and an adjustable control slider (58), through which the coolant pump impeller (20) can be regulated The flow cross-section of the annular gap (62) between the outlet (64) of the outlet (64) and the surrounding delivery channel (12), wherein the control slider (58) can be moved along the pump by means of the wall (73; 85; 92) The radially directly opposite walls (78; 89; 94) of the housing (10) are displaced axially. In order to reduce the wear and tear when adjusting the regulating slider (58), according to the proposal of the present invention, the directly opposite walls (73, 78) of the regulating slider (58) and the pump housing (10); 85, 89; 92, 94) are respectively provided with a coating, wherein the coating of the wall (78; 89; 94) of the pump housing (10) is larger than the opposite wall of the control slider (58) (73; 85; 92) had a harder coating.

Description

technical field [0001] The invention relates to a coolant pump for an internal combustion engine with: a drive shaft; The impeller can convey coolant; the pump housing; the adjustable control slider, through which the flow cross section of the annular gap between the outlet of the coolant pump impeller and the surrounding conveying channel can be adjusted, wherein the The control slider can be moved axially along the radially directly opposite wall surface of the pump housing by means of the wall surface. Background technique [0002] Such coolant pumps are used in internal combustion engines to regulate the coolant flow required for cooling in order to prevent the internal combustion engine from overheating. This pump is usually driven by a belt or chain drive so that the coolant pump wheel is driven at or in a fixed ratio to the crankshaft speed. [0003] In modern internal combustion engines, the quantity of coolant delivered should be adapted to the coolant requirement...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01P7/14F04D15/00F04D29/02
CPCF04D15/0038F04D29/026F04D29/086
Inventor 斯特凡·洛特冈米夏埃尔-托马斯·本拉安德雷斯·伯格斯特凡·齐尔伯格
Owner PIERBURG PUMP TECH
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