Valve unit for modulating the pressure in a pneumatic brake system

US10214191B2 · kind B2 · utility

Assignee

• WABCO GmbH · DE

Inventors

• Werner Dreyer · Garbsen, DE
• Karsten Runge · Springe, DE
• Andreas Teichmann · Altwarmbüchen, DE

Key dates

• Filing date: Aug 6, 2015
• Grant date: Feb 26, 2019
• Expiry date: Aug 6, 2035

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T8/3675
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A valve unit (1, 1′) for modulating the pressure in a pneumatic brake system, has a brake pressure inlet (3), a brake pressure outlet (4) and a venting outlet (5), a pneumatically controllable main valve (6, 7) and a pilot valve (8, 9), embodied as a solenoid valve and assigned to the main valve (6, 7), which are arranged in a valve housing (2, 2′) subdivided by a plane of division (10), into a main housing (11, 11′) and a housing cover (12). For fixing the housing cover (12) on the main housing (11, 11′) a bracket element (62.1) is fixed to the main housing (11, 11′) and bears with a largely planar pressure plate (63) generating an elastic prestressing force on a planar outside wall (64) of the housing cover (12) oriented parallel to the plane of division (10) of the valve housing (2, 2′).