Method for operating a load connected to a motor vehicle electrical system

A technology for motor vehicles and on-board power grids, which is used in electrical components, regulating electrical variables, and output power conversion devices.

Active Publication Date: 2016-06-01
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The problem on which the invention is based is solved according to claim 1

Method used

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  • Method for operating a load connected to a motor vehicle electrical system
  • Method for operating a load connected to a motor vehicle electrical system
  • Method for operating a load connected to a motor vehicle electrical system

Examples

Experimental program
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Embodiment Construction

[0012] figure 1 Shown is a circuit 10 of a solenoid actuating device (not further shown) for actuating a load 12 , in particular a solenoid coil (not further shown), in particular a fuel injection valve (not shown) of an internal combustion engine (not shown) circuit diagram.

[0013] A DC voltage converter 14 (“current-controlled boost converter”, “boost converter”) is supplied with an input voltage Ue at an input 16 from a DC voltage source 18 and generates therefrom at an output 20 An output voltage Ua is at least temporarily higher than the input voltage Ue. The DC voltage source 18 is the on-board electrical system of the motor vehicle. The input voltage Ue is measured by means of a voltage measuring device 19 which sends its measurement signal to the terminal 21 .

[0014] Furthermore, the DC voltage converter 14 has a base terminal 24 in the lower region of the drawing, which is currently connected to a reference potential 28 via a current-measuring resistor 26 . Pr...

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PUM

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Abstract

The invention relates to a method for operating a load (12) connected to a motor vehicle electrical system (18) using a step-up converter (14). An input voltage (Ue) of the step-up converter (14) is ascertained, and a current (I) flowing from an output capacitor (42) and a valve (36) of the step-up converter (14) is ascertained. The valve (36) is opened or closed depending on the current (I) and depending on the input voltage (Ue).

Description

technical field [0001] The invention relates to a method according to the preamble of claim 1 for operating loads in an onboard electrical system of a motor vehicle by means of a step-up converter. Background technique [0002] A boost converter is generally known and used to boost its input voltage to a desired output voltage final level. [0003] A method for operating a boost converter is known from DE 103 53 835 A1, in which the switching elements of the boost converter are switched on and off according to a predetermined on-duration, the magnitude of which is in the current In response to an operating condition of at least one of the components of the boost converter being adjusted or changed during the operating mode of the boost converter. Contents of the invention [0004] The problem on which the invention is based is solved according to claim 1 . Advantageous refinements are specified in the dependent claims. Furthermore, features which are essential to the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/14H02M3/156H02M1/00
CPCH02M1/14H02M3/156H02M1/0022H02M1/0009
Inventor T.舒马歇尔
Owner ROBERT BOSCH GMBH
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