Patent · US Active

Compressed air supply system for a utility vehicle having a pulse-width modulated valve

US8382448B2 · kind B2 · utility

5Cited by

7References

20Claims

0Family size

Assignee

KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH · DE

Inventors

Ansgar Fries · Hersbruck, DE
Eduard Hilberer · Hockenheim, DE

Key dates

Filing date	Nov 18, 2008
Grant date	Feb 26, 2013
Priority date	—
Expiry date	Aug 3, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K31/0675
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A compressed air supply system for a utility vehicle includes a compressor that can be driven by a drive by a pneumatic clutch, and a valve having a magnetic coil for selectively supplying compressed air to a coupling inlet of the clutch. When the valve is opened or maintained open, a pick-up current flows through the magnetic coil during a first phase, and a holding current weaker than the pick-up current flows through the magnetic coil during a second phase, a driver signal generating the holding current being pulse-width-modulated in the second phase.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.