Method for actuating electromagnetic valve, and corresponding fluid system
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A fluid system, solenoid valve technology, applied in general control systems, electromagnets, control/regulator systems, etc., to achieve the effect of quick turn-on
Active Publication Date: 2018-06-08
ROBERT BOSCH GMBH
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Problems solved by technology
Solenoid valves (especially those with gap filtering) may have temperature-dependent functional characteristics such that under unfavorable boundary conditions problems can arise with the switching characteristics
Method used
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[0021] from figure 1 As can be seen in , the illustrated embodiment of the fluid system 1 according to the invention comprises at least one solenoid valve 10 and an evaluation and control unit 20 . The shown section of the fluid system 1 exemplarily shows a solenoid valve 10 with a magnetic structure assembly 12 and a valve cartridge 14 which in the illustrated embodiment is screwed into a fluid block 3 with a plurality of Fluid channel 5. Furthermore, in the illustrated embodiment, a temperature sensor 22 is screwed into the fluid block 3 , the fluid block measures the fluid temperature, and the evaluation and control unit 20 provides information on the fluid temperature as at least one temperature information. Furthermore, further not shown temperature sensors and / or vehicle systems can be used which provide further temperature information to the evaluation and control unit 20 , such as information on the ambient temperature and / or on the Information about the temperature ...
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Abstract
The invention relates to a method for actuating an electromagnetic valve (10) in a fluid system (1). For a specified first time period (TH, TT), a switching current (I1SH, I2SH, Ifirst, I2ST) with a specified first amplitude (ASH, AST) is applied, said switching current switching the electromagnetic valve (10) from a rest state into a switching state. After the specified first time period (TH, TT)expires, a holding current (I1HH, I2HH, I1HT, I2HT) with a specified second amplitude (AHH, AHT) is applied, said holding current holding the electromagnetic valve (10) in the switching state. The first amplitude (ASH, AST) of the first switching current (I1SH, I2SH, Ifirst, I2ST) is greater than the second amplitude (AHH, AHT) of the holding current (I1HH, I2HH, I1HT, I2HT). The invention also relates to a corresponding fluid system (1). The first amplitude (ASH, AST) of the switching current (I1SH, I2SH, Ifirst, I2ST) and the second amplitude (AHH, AHT) of the holding current (I1HH, I2HH, I1HT, I2HT) are specified depending on at least one piece of temperature information.
Description
technical field [0001] The invention is based on a method for actuating a solenoid valve of the type according to independent claim 1 . The invention is based on a fluid system of the type according to the independent claims. A fluid system and a computer program for carrying out the method are also subjects of the invention. Background technique [0002] Numerous methods are known from the prior art for actuating solenoid valves, in particular high-pressure switching valves that close when there is no current flow. Such solenoid valves serve as technical components for controlling the inlet and / or outlet of fluids, such as gases or liquids, or for controlling and / or regulating the direction of flow. Typically, a valve that is closed in the absence of current is briefly actuated with a high switching current until it opens. When the valve is open, the current can drop to a smaller holding current because a larger magnetic force is generated at the same current due to the ...
Claims
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Application Information
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