Method for actuating at least one solenoid valve

Patent metadata

Field	Value
Publication number	US-10754356-B2
Application number	US-201815952012-A
Country	US
Kind code	B2
Filing date	Apr 12, 2018
Priority date	May 8, 2017
Publication date	Aug 25, 2020
Grant date	Aug 25, 2020

Abstract

A method for actuating at least one solenoid valve includes detecting a valve actuation signal, energizing the at least one solenoid valve with a specific constant control current for a specific actuation time which follows the detection of the valve actuation signal, and increasing the control current to a full actuation current for a full actuation time which follows the actuation time. The specific constant control current and the actuation time are dimensioned in such a way that at least two different types of solenoid valves can be at least partially opened by the control current during the actuation time.

First claim

What is claimed is:

1. A method for actuating at least two solenoid valves of a valve arrangement, the at least two solenoid valves being different types of solenoid valves that require differing amounts of force to open, comprising:
detecting a valve actuation signal;
energizing, for a first actuation time period, the at least two solenoid valves simultaneously with a first constant current in response to detecting the valve actuation signal, a magnitude of the first constant current and a duration of the first actuation time period being configured to at least partially open both of the at least two solenoid valves; and
energizing, for a second actuation time period immediately following the first actuation time period, the at least two solenoid valves simultaneously with a second constant current, a magnitude of the second constant current and a duration of the second actuation time period being configured to completely open both of the at least two solenoid valves, the magnitude of the second constant current being greater than the magnitude of the first constant current.

2. The method according to claim 1 , wherein the magnitude of the first constant current is configured to cause at least one of the at least two solenoid valves to completely open one of (i) immediately before an end of the first actuation time period and (ii) at the end of the first actuation time period.

3. The method according to claim 1 , wherein the magnitude of the first constant current is configured to cause both of the at least two solenoid valves to completely open one of (i) immediately before an end of the first actuation time period and (ii) at the end of the first actuation time period.

4. The method according to claim 1 , wherein the at least two solenoid valves are configured to be closed when no current is applied.

5. The method according to claim 1 , further comprising:
configuring the at least two solenoid valves in a pressureless state at least at a start of the first actuation time period.

6. The method according to claim 1 , wherein the first actuation time period is pre-determined.

7. The method according to claim 1 , wherein the valve arrangement is a component of a driving safety system of a motor vehicle.

8. The method according to claim 1 , wherein a control device is configured to actuate at least two solenoid valves in accordance with the method.

9. The method according to claim 1 , wherein a computer program is configured to execute the method.

10. The method according to claim 1 , wherein the computer program is stored on a machine-readable storage medium.

Assignees

• Bosch Gmbh Robert

Inventors

• Gardt Andrej
• Eisele Christoph
• Schubitschew Valentin
• Edelmann Volker

Classifications

• F16K31/0675 Primary

  Electromagnet aspects, e.g. electric supply therefor · CPC title

• B60T8/306

  using hydraulic valves · CPC title

• B60T8/36

  including a pilot valve responding to an electromagnetic force · CPC title

• B60T13/68

  by electrically-controlled valves {(B60T13/662 and B60T13/665 take precedence)} · CPC title

• B60T8/30

  responsive to load {(B60T8/261, B60T8/262, B60T8/266 take precedence)} · CPC title