Solenoid valve assembly for a braking system for a vehicle, braking system for a vehicle, and method for mounting a solenoid valve assembly for a braking system for a vehicle

A brake system for a vehicle, comprising:

• at least one solenoid valve apparatus, including:
• a main valve unit;
• a pilot-control valve unit that is fluidically connected to the main valve unit;
• and
• a housing to accommodate at least the main valve unit and the pilot-control valve unit;
• and
• a check valve connected between a control fluid port of the solenoid valve apparatus and the main valve unit, fluidically in parallel with respect to the pilot-control valve unit, and/or is connected between a reservoir fluid port of the solenoid valve apparatus and the pilot-control valve unit, fluidically in parallel with respect to the main valve unit, wherein when a central-pressure-control (CPC) bypass occurs because a driver increases a brake pressure, the pressure flows through the check valve into a control chamber of the main valve unit;
• wherein the pilot-control valve unit includes a double solenoid unit and at least one valve device, wherein the double solenoid unit is formed such that it can be populated with at least one valve device, and wherein the double solenoid unit has at least two accommodating portions for accommodating valve devices and at least two solenoid devices for actuating valve devices, and
• wherein two coils of the double solenoid unit are arranged adjacent to one another and are separated from one another by a thin wall or layer of a common body of the double solenoid unit, and
• wherein the housing includes a first housing part and a second housing part, which is configured as a housing upper part and which has a geometrical step, wherein at the geometrical step, the double solenoid unit or the valve solenoid is fastened by at least one closing device to the first housing part, which is configured as a housing lower part, and
• wherein the main valve unit has a control piston, the control chamber, a working chamber, a sealing sleeve, and a guide sleeve, the guide sleeve being in the form of a double lip seal, and wherein the sealing sleeve is opened or moved when the control piston moves downwardly.

A method for assembling a solenoid valve apparatus for a brake system for a vehicle, the method comprising:

• providing a solenoid valve apparatus, wherein the solenoid valve apparatus includes:
• a main valve unit;
• a pilot-control valve unit that is fluidically connected to the main valve unit;
• and
• a housing to accommodate at least the main valve unit and the pilot-control valve unit;
• and
• a check valve connected between a control fluid port of the solenoid valve apparatus and the main valve unit, fluidically in parallel with respect to the pilot-control valve unit, and/or is connected between a reservoir fluid port of the solenoid valve apparatus and the pilot-control valve unit, fluidically in parallel with respect to the main valve unit, wherein when a central-pressure-control (CPC) bypass occurs because a driver increases a brake pressure, the pressure flows through the check valve into a control chamber of the main valve unit;
• wherein the pilot-control valve unit includes a double solenoid unit and at least one valve device, wherein the double solenoid unit is formed such that it can be populated with at least one valve device, and wherein the double solenoid unit has at least two accommodating portions for accommodating valve devices and at least two solenoid devices for actuating valve devices;
• arranging the double solenoid unit in the pilot-control valve unit;
• inserting the at least one valve device into at least one of the accommodating portions of the double solenoid unit to populate the double solenoid unit;
• and
• closing the housing to house the pilot-control valve unit and the main valve unit;
• wherein two coils of the double solenoid unit are arranged adjacent to one another and are separated from one another by a thin wall or layer of a common body of the double solenoid unit, and
• wherein the housing includes a first housing part and a second housing part, which is configured as a housing upper part and which has a geometrical step, wherein at the geometrical step, the double solenoid unit or the valve solenoid is fastened by at least one closing device to the first housing part, which is configured as a housing lower part, and
• wherein the main valve unit has a control piston, the control chamber, a working chamber, a sealing sleeve, and a guide sleeve, the guide sleeve being in the form of a double lip seal, and wherein the sealing sleeve is opened or moved when the control piston moves downwardly.