# US 2025/0155047 A1 · Solenoid Valve Assembly for a Vehicle Dynamics System

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- Number: US 2025/0155047 A1
- Document ID: US20250155047A1
- Status: Published application
- Kind: A1
- Application number: 18/838,542
- Filed: 2023-01-31
- Published: 2025-05-15
- Earliest claimed: 2022-02-16
- Assignees: Robert Bosch GmbH
- Applicants: Robert Bosch GmbH
- Inventors: Peter Kralicek; Andreas Schmidtlein; Jochen Huebl
- Web page: https://patentgrep.com/patent/US20250155047A1

## CPC

- F16K 31/0675: {Electromagnet aspects, e.g. electric supply therefor}
- H01F 7/081: {Magnetic constructions}
- H01F 7/127: Assembling
- H01F 7/1607: {Armatures entering the winding}
- B60T 13/686: {in hydraulic systems or parts thereof}
- H01F 7/128: Encapsulating, encasing or sealing
- H01F 2007/062: {Details of terminals or connectors for electromagnets}
- F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)}
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES

## Abstract

A solenoid valve assembly for a vehicle dynamics system includes a hydraulic block, a number of solenoid valves which each comprise a valve dome and a magnet assembly, and control electronics. The individual magnet assemblies each have a housing and a winding carrier located in the housing and onto which a coil winding connected to the control electronics via connection lines is wound. A free space is formed between the housing and the winding carrier of each individual magnet assembly. A filling device is designed to reduce the free space and to increase a coupling capacitance forming between the coil winding and the housing and the valve dome.

## Claims

### Claim 1

A solenoid valve assembly for a vehicle dynamics system, comprising:
a hydraulic block;
a number of solenoid valves which each comprise a valve dome and a magnet assembly; and
control electronics,
wherein the magnet assembly of each solenoid valve comprises a housing and a winding carrier, which is located in the housing and onto which a coil winding connected to the control electronics via connection lines is wound,
wherein a free space is formed between the housing and the winding carrier of the magnet assembly of each solenoid valve, and
wherein a filling device is configured to reduce the free space and to increase a coupling capacitance between the coil winding, the housing, and the valve dome.

### Claim 2 (depends on 1)

The solenoid valve assembly according to claim 1, wherein the increased coupling capacitances of the magnet assemblies each effect low-impedance feedback for interference signals from the hydraulic block to the control electronics, such that a plurality of electrically parallel feedback paths are produced between the hydraulic block and the control electronics.

### Claim 3 (depends on 1)

The solenoid valve assembly according to claim 1, wherein the filling device comprises a filling material having a predetermined permittivity which is much greater than 1.

### Claim 4 (depends on 3)

The solenoid valve assembly according to claim 3, wherein the filling material is an adhesive, a silicone, or a heat-conducting medium introduced into the free space in liquid form and cured.

### Claim 5 (depends on 1)

The solenoid valve assembly according to claim 1, wherein the filling device comprises a sleeve inserted into the free space between the coil winding and the housing.

### Claim 6 (depends on 5)

The solenoid valve assembly according to claim 5, wherein said sleeve is made of a plastic material having a permittivity much greater than 1.

### Claim 7 (depends on 1)

The solenoid valve assembly according to claim 1, wherein an additional edge portion enlarges an overall cross section of the coil winding and forms the filling device.

### Claim 8 (depends on 7)

The solenoid valve assembly according to claim 7, wherein the additional edge portion of the coil winding has a trapezoidal or rectangular cross-section.

### Claim 9 (depends on 1)

A vehicle dynamics system, comprising:
the solenoid valve assembly according to claim 1.