Pressure control valve arrangement having covers that are produced as a completely integral part with transverse channels by primary shaping

US9139178B2 · kind B2 · utility

Assignee

• KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH · DE

Inventors

• Jan Grebe · Starnberg, DE
• Dirk Brenner · Stuttgart, DE
• Jochen Weippert · Munich, DE
• Wolfgang Rohn · Munich, DE
• Harald Jaehns · Munich, DE

Key dates

• Filing date: Jun 24, 2010
• Grant date: Sep 22, 2015
• Expiry date: Sep 14, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49426
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A pressure control valve arrangement is described for controlling the fluid pressure in an ABS brake system of a vehicle in such a way that, while there is a tendency of individual wheels of the vehicle to lock, the brake pressure in at least one associated brake cylinder can be adaptively adjusted, wherein at least one diaphragm valve is accommodated in a housing of the pressure control valve arrangement, said diaphragm valve having a diaphragm as the valve body, which diaphragm can be acted upon by introducing a pressure medium into a control chamber that is covered on the outside of the housing by a respective cover produced by primary shaping, such as injection molding, in such a way that the control chamber is formed between the diaphragm and the cover, and wherein blind holes, which extend in the cover substantially perpendicularly to the plane of the cover, are formed in the cover, the blind hole opening of at least one of said blind holes leading into the control chamber, and the blind hole opening of at least one other of said blind holes leading into a pressure medium channel formed in the housing, and at least one and the other of said blind holes being fluidically inter…