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Assembly for controlling an electric vacuum pump

A vacuum pump and component technology, applied in pump control, starter of a single DC motor, motor generator/starter, etc., can solve problems such as current limitation, reduce power, solve EMC interference problem, and prolong the opening time.

Inactive Publication Date: 2014-01-08
CONTINENTAL AUTOMOTIVE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The voltage and thus the current used by the motor is thus limited using the connected corresponding electronic system
However, due to the pulses, with currents of this magnitude a considerably worse EMC (Electromagnetic Compatibility) behavior is to be expected and the effective limits in the automotive sector are often significantly exceeded
This disadvantage can only be overcome by means of very complex and expensive additional circuitry, if at all

Method used

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  • Assembly for controlling an electric vacuum pump
  • Assembly for controlling an electric vacuum pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] figure 1 A circuit diagram of a first exemplary embodiment of an assembly according to the invention is shown.

[0025] An electric motor 1 of a vacuum pump (not illustrated in detail) is indicated and can be used in the vehicle, for example to assist or increase braking force.

[0026] Electric power is supplied from a DC voltage source 2 to the electronic vacuum pump or the electronic vacuum pump of the motor 1 . For this purpose, a quasi-resistance-free path 3 is provided between the negative pole 2 of the DC voltage source and the electric machine 1 by means of an electronic switch 4 .

[0027] The electronic switch 4 is actuatable by means of an electronic control unit (not shown in the figure), that is to say the switch can be closed or opened in an electronically controlled manner by the control unit.

[0028] If the switch 4 is closed, a closed circuit is thus created with the voltage source 2, the path 3 with the switch 4, and the motor 1, so that the motor 1...

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PUM

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Abstract

An assembly for controlling an electric vacuum pump for a vehicle, which is connectable by at least one switch, which can be controlled by an electronic control unit, to a supply voltage, wherein the electronic control unit in a start-up phase connects the vacuum pump to an additional electrical resistor between the supply voltage and the vacuum pump.

Description

technical field [0001] The invention relates to an assembly for controlling an electronic vacuum pump of a vehicle. Background technique [0002] The electronic vacuum pump of the vehicle (preferably passenger car) replaces the conventional method for generating the negative pressure (by the intake air of the engine in the case of a gasoline engine, and by a mechanical vacuum pump in the case of a diesel engine), which in the prior art is known. Vehicles require this vacuum or negative pressure, in particular to assist or enhance braking. [0003] This type of pump can be controlled by means of a relay or a separate control unit (ECU) that connects the pump to the corresponding on-board power system. With a 12V on-board power system, inrush currents up to 100A peak can occur here under certain circumstances. In modern automotive architectures, attempts are made to reduce this power peak significantly so as not to harm systems operating in parallel. There is therefore a n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P1/20F04B49/06
CPCF04B49/065H02P1/20F04B49/06
Inventor A·卡尔贝克D·比尔迪梅耶B·普法芬德尔M·伊斯格勒尔C·马克尔
Owner CONTINENTAL AUTOMOTIVE GMBH